Ensemble

from datetime import timedelta
import numpy as np
from opendrift.models.oceandrift import OceanDrift
from opendrift.readers import reader_netCDF_CF_generic

Drift simulation using 30 member ensemble wind data from MEPS model of MET Norway

o = OceanDrift(loglevel=20)
o.set_config('drift:vertical_mixing', False)
r = reader_netCDF_CF_generic.Reader('https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc')
o.add_reader(r)

o.seed_elements(lat=60, lon=4.9, time=r.start_time,
                radius=1000, number=10000)

o.run(duration=timedelta(hours=50), time_step=600, time_step_output=3600)

14:13:57 INFO    opendrift:576: OpenDriftSimulation initialised (version 1.14.8 / v1.14.8-22-ged2e201)
14:13:57 INFO    opendrift.readers:63: Opening file with xr.open_dataset
14:13:59 INFO    opendrift.readers.reader_netCDF_CF_generic:332: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
14:13:59 INFO    opendrift.models.basemodel.environment:203: Adding a global landmask from GSHHG
14:14:03 INFO    opendrift.models.basemodel.environment:227: Fallback values will be used for the following variables which have no readers:
14:14:03 INFO    opendrift.models.basemodel.environment:230:    x_sea_water_velocity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    y_sea_water_velocity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    sea_surface_height: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    upward_sea_water_velocity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    ocean_vertical_diffusivity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    horizontal_diffusivity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_significant_height: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    ocean_mixed_layer_thickness: 50.000000
14:14:03 INFO    opendrift.models.basemodel.environment:230:    sea_floor_depth_below_sea_level: 10000.000000
14:14:03 INFO    opendrift:1836: Skipping environment variable ocean_vertical_diffusivity because of condition ['drift:vertical_mixing', 'is', False]
14:14:03 INFO    opendrift:1836: Skipping environment variable ocean_mixed_layer_thickness because of condition ['drift:vertical_mixing', 'is', False]
14:14:03 INFO    opendrift:1847: Storing previous values of element property lon because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
14:14:03 INFO    opendrift:1847: Storing previous values of element property lat because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
14:14:03 INFO    opendrift:1855: Storing previous values of environment variable sea_surface_height because of condition ['drift:vertical_advection', 'is', True]
14:14:03 INFO    opendrift:955: Using existing reader for land_binary_mask to move elements to ocean
14:14:03 INFO    opendrift:986: All points are in ocean
14:14:03 INFO    opendrift:2144: 2026-03-03 12:00:00 - step 1 of 300 - 10000 active elements (0 deactivated)
14:14:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:04 INFO    opendrift:2144: 2026-03-03 12:10:00 - step 2 of 300 - 10000 active elements (0 deactivated)
14:14:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:04 INFO    opendrift:2144: 2026-03-03 12:20:00 - step 3 of 300 - 10000 active elements (0 deactivated)
14:14:05 INFO    opendrift:2144: 2026-03-03 12:30:00 - step 4 of 300 - 10000 active elements (0 deactivated)
14:14:05 INFO    opendrift:2144: 2026-03-03 12:40:00 - step 5 of 300 - 10000 active elements (0 deactivated)
14:14:05 INFO    opendrift:2144: 2026-03-03 12:50:00 - step 6 of 300 - 10000 active elements (0 deactivated)
14:14:05 INFO    opendrift:2144: 2026-03-03 13:00:00 - step 7 of 300 - 10000 active elements (0 deactivated)
14:14:05 INFO    opendrift:2144: 2026-03-03 13:10:00 - step 8 of 300 - 10000 active elements (0 deactivated)
14:14:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:06 INFO    opendrift:2144: 2026-03-03 13:20:00 - step 9 of 300 - 10000 active elements (0 deactivated)
14:14:06 INFO    opendrift:2144: 2026-03-03 13:30:00 - step 10 of 300 - 10000 active elements (0 deactivated)
14:14:06 INFO    opendrift:2144: 2026-03-03 13:40:00 - step 11 of 300 - 10000 active elements (0 deactivated)
14:14:06 INFO    opendrift:2144: 2026-03-03 13:50:00 - step 12 of 300 - 10000 active elements (0 deactivated)
14:14:06 INFO    opendrift:2144: 2026-03-03 14:00:00 - step 13 of 300 - 10000 active elements (0 deactivated)
14:14:06 INFO    opendrift:2144: 2026-03-03 14:10:00 - step 14 of 300 - 10000 active elements (0 deactivated)
14:14:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:07 INFO    opendrift:2144: 2026-03-03 14:20:00 - step 15 of 300 - 10000 active elements (0 deactivated)
14:14:07 INFO    opendrift:2144: 2026-03-03 14:30:00 - step 16 of 300 - 10000 active elements (0 deactivated)
14:14:07 INFO    opendrift:2144: 2026-03-03 14:40:00 - step 17 of 300 - 10000 active elements (0 deactivated)
14:14:07 INFO    opendrift:2144: 2026-03-03 14:50:00 - step 18 of 300 - 10000 active elements (0 deactivated)
14:14:07 INFO    opendrift:2144: 2026-03-03 15:00:00 - step 19 of 300 - 10000 active elements (0 deactivated)
14:14:08 INFO    opendrift:2144: 2026-03-03 15:10:00 - step 20 of 300 - 10000 active elements (0 deactivated)
14:14:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:08 INFO    opendrift:2144: 2026-03-03 15:20:00 - step 21 of 300 - 10000 active elements (0 deactivated)
14:14:10 INFO    opendrift:2144: 2026-03-03 15:30:00 - step 22 of 300 - 10000 active elements (0 deactivated)
14:14:12 INFO    opendrift:2144: 2026-03-03 15:40:00 - step 23 of 300 - 9999 active elements (1 deactivated)
14:14:12 INFO    opendrift:2144: 2026-03-03 15:50:00 - step 24 of 300 - 9999 active elements (1 deactivated)
14:14:12 INFO    opendrift:2144: 2026-03-03 16:00:00 - step 25 of 300 - 9999 active elements (1 deactivated)
14:14:12 INFO    opendrift:2144: 2026-03-03 16:10:00 - step 26 of 300 - 9999 active elements (1 deactivated)
14:14:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:13 INFO    opendrift:2144: 2026-03-03 16:20:00 - step 27 of 300 - 9999 active elements (1 deactivated)
14:14:13 INFO    opendrift:2144: 2026-03-03 16:30:00 - step 28 of 300 - 9998 active elements (2 deactivated)
14:14:13 INFO    opendrift:2144: 2026-03-03 16:40:00 - step 29 of 300 - 9997 active elements (3 deactivated)
14:14:13 INFO    opendrift:2144: 2026-03-03 16:50:00 - step 30 of 300 - 9996 active elements (4 deactivated)
14:14:13 INFO    opendrift:2144: 2026-03-03 17:00:00 - step 31 of 300 - 9994 active elements (6 deactivated)
14:14:13 INFO    opendrift:2144: 2026-03-03 17:10:00 - step 32 of 300 - 9990 active elements (10 deactivated)
14:14:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:14 INFO    opendrift:2144: 2026-03-03 17:20:00 - step 33 of 300 - 9989 active elements (11 deactivated)
14:14:14 INFO    opendrift:2144: 2026-03-03 17:30:00 - step 34 of 300 - 9985 active elements (15 deactivated)
14:14:14 INFO    opendrift:2144: 2026-03-03 17:40:00 - step 35 of 300 - 9983 active elements (17 deactivated)
14:14:15 INFO    opendrift:2144: 2026-03-03 17:50:00 - step 36 of 300 - 9979 active elements (21 deactivated)
14:14:15 INFO    opendrift:2144: 2026-03-03 18:00:00 - step 37 of 300 - 9974 active elements (26 deactivated)
14:14:15 INFO    opendrift:2144: 2026-03-03 18:10:00 - step 38 of 300 - 9967 active elements (33 deactivated)
14:14:15 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:15 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:16 INFO    opendrift:2144: 2026-03-03 18:20:00 - step 39 of 300 - 9964 active elements (36 deactivated)
14:14:16 INFO    opendrift:2144: 2026-03-03 18:30:00 - step 40 of 300 - 9956 active elements (44 deactivated)
14:14:16 INFO    opendrift:2144: 2026-03-03 18:40:00 - step 41 of 300 - 9937 active elements (63 deactivated)
14:14:16 INFO    opendrift:2144: 2026-03-03 18:50:00 - step 42 of 300 - 9927 active elements (73 deactivated)
14:14:16 INFO    opendrift:2144: 2026-03-03 19:00:00 - step 43 of 300 - 9912 active elements (88 deactivated)
14:14:16 INFO    opendrift:2144: 2026-03-03 19:10:00 - step 44 of 300 - 9896 active elements (104 deactivated)
14:14:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:17 INFO    opendrift:2144: 2026-03-03 19:20:00 - step 45 of 300 - 9881 active elements (119 deactivated)
14:14:17 INFO    opendrift:2144: 2026-03-03 19:30:00 - step 46 of 300 - 9859 active elements (141 deactivated)
14:14:17 INFO    opendrift:2144: 2026-03-03 19:40:00 - step 47 of 300 - 9837 active elements (163 deactivated)
14:14:17 INFO    opendrift:2144: 2026-03-03 19:50:00 - step 48 of 300 - 9812 active elements (188 deactivated)
14:14:18 INFO    opendrift:2144: 2026-03-03 20:00:00 - step 49 of 300 - 9788 active elements (212 deactivated)
14:14:18 INFO    opendrift:2144: 2026-03-03 20:10:00 - step 50 of 300 - 9762 active elements (238 deactivated)
14:14:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:18 INFO    opendrift:2144: 2026-03-03 20:20:00 - step 51 of 300 - 9735 active elements (265 deactivated)
14:14:19 INFO    opendrift:2144: 2026-03-03 20:30:00 - step 52 of 300 - 9699 active elements (301 deactivated)
14:14:19 INFO    opendrift:2144: 2026-03-03 20:40:00 - step 53 of 300 - 9654 active elements (346 deactivated)
14:14:19 INFO    opendrift:2144: 2026-03-03 20:50:00 - step 54 of 300 - 9620 active elements (380 deactivated)
14:14:19 INFO    opendrift:2144: 2026-03-03 21:00:00 - step 55 of 300 - 9579 active elements (421 deactivated)
14:14:19 INFO    opendrift:2144: 2026-03-03 21:10:00 - step 56 of 300 - 9522 active elements (478 deactivated)
14:14:20 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:20 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:20 INFO    opendrift:2144: 2026-03-03 21:20:00 - step 57 of 300 - 9456 active elements (544 deactivated)
14:14:20 INFO    opendrift:2144: 2026-03-03 21:30:00 - step 58 of 300 - 9402 active elements (598 deactivated)
14:14:20 INFO    opendrift:2144: 2026-03-03 21:40:00 - step 59 of 300 - 9326 active elements (674 deactivated)
14:14:20 INFO    opendrift:2144: 2026-03-03 21:50:00 - step 60 of 300 - 9256 active elements (744 deactivated)
14:14:20 INFO    opendrift:2144: 2026-03-03 22:00:00 - step 61 of 300 - 9189 active elements (811 deactivated)
14:14:21 INFO    opendrift:2144: 2026-03-03 22:10:00 - step 62 of 300 - 9104 active elements (896 deactivated)
14:14:21 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:21 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:21 INFO    opendrift:2144: 2026-03-03 22:20:00 - step 63 of 300 - 9016 active elements (984 deactivated)
14:14:22 INFO    opendrift:2144: 2026-03-03 22:30:00 - step 64 of 300 - 8929 active elements (1071 deactivated)
14:14:22 INFO    opendrift:2144: 2026-03-03 22:40:00 - step 65 of 300 - 8820 active elements (1180 deactivated)
14:14:22 INFO    opendrift:2144: 2026-03-03 22:50:00 - step 66 of 300 - 8728 active elements (1272 deactivated)
14:14:22 INFO    opendrift:2144: 2026-03-03 23:00:00 - step 67 of 300 - 8648 active elements (1352 deactivated)
14:14:22 INFO    opendrift:2144: 2026-03-03 23:10:00 - step 68 of 300 - 8556 active elements (1444 deactivated)
14:14:23 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:23 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:23 INFO    opendrift:2144: 2026-03-03 23:20:00 - step 69 of 300 - 8458 active elements (1542 deactivated)
14:14:23 INFO    opendrift:2144: 2026-03-03 23:30:00 - step 70 of 300 - 8349 active elements (1651 deactivated)
14:14:23 INFO    opendrift:2144: 2026-03-03 23:40:00 - step 71 of 300 - 8256 active elements (1744 deactivated)
14:14:23 INFO    opendrift:2144: 2026-03-03 23:50:00 - step 72 of 300 - 8136 active elements (1864 deactivated)
14:14:23 INFO    opendrift:2144: 2026-03-04 00:00:00 - step 73 of 300 - 8030 active elements (1970 deactivated)
14:14:24 INFO    opendrift:2144: 2026-03-04 00:10:00 - step 74 of 300 - 7901 active elements (2099 deactivated)
14:14:24 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:24 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:24 INFO    opendrift:2144: 2026-03-04 00:20:00 - step 75 of 300 - 7780 active elements (2220 deactivated)
14:14:24 INFO    opendrift:2144: 2026-03-04 00:30:00 - step 76 of 300 - 7664 active elements (2336 deactivated)
14:14:24 INFO    opendrift:2144: 2026-03-04 00:40:00 - step 77 of 300 - 7553 active elements (2447 deactivated)
14:14:25 INFO    opendrift:2144: 2026-03-04 00:50:00 - step 78 of 300 - 7460 active elements (2540 deactivated)
14:14:25 INFO    opendrift:2144: 2026-03-04 01:00:00 - step 79 of 300 - 7365 active elements (2635 deactivated)
14:14:25 INFO    opendrift:2144: 2026-03-04 01:10:00 - step 80 of 300 - 7247 active elements (2753 deactivated)
14:14:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:25 INFO    opendrift:2144: 2026-03-04 01:20:00 - step 81 of 300 - 7156 active elements (2844 deactivated)
14:14:26 INFO    opendrift:2144: 2026-03-04 01:30:00 - step 82 of 300 - 7046 active elements (2954 deactivated)
14:14:26 INFO    opendrift:2144: 2026-03-04 01:40:00 - step 83 of 300 - 6941 active elements (3059 deactivated)
14:14:26 INFO    opendrift:2144: 2026-03-04 01:50:00 - step 84 of 300 - 6836 active elements (3164 deactivated)
14:14:26 INFO    opendrift:2144: 2026-03-04 02:00:00 - step 85 of 300 - 6725 active elements (3275 deactivated)
14:14:26 INFO    opendrift:2144: 2026-03-04 02:10:00 - step 86 of 300 - 6632 active elements (3368 deactivated)
14:14:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:27 INFO    opendrift:2144: 2026-03-04 02:20:00 - step 87 of 300 - 6534 active elements (3466 deactivated)
14:14:27 INFO    opendrift:2144: 2026-03-04 02:30:00 - step 88 of 300 - 6427 active elements (3573 deactivated)
14:14:27 INFO    opendrift:2144: 2026-03-04 02:40:00 - step 89 of 300 - 6284 active elements (3716 deactivated)
14:14:27 INFO    opendrift:2144: 2026-03-04 02:50:00 - step 90 of 300 - 6164 active elements (3836 deactivated)
14:14:27 INFO    opendrift:2144: 2026-03-04 03:00:00 - step 91 of 300 - 6028 active elements (3972 deactivated)
14:14:27 INFO    opendrift:2144: 2026-03-04 03:10:00 - step 92 of 300 - 5894 active elements (4106 deactivated)
14:14:28 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:28 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:28 INFO    opendrift:2144: 2026-03-04 03:20:00 - step 93 of 300 - 5760 active elements (4240 deactivated)
14:14:28 INFO    opendrift:2144: 2026-03-04 03:30:00 - step 94 of 300 - 5646 active elements (4354 deactivated)
14:14:28 INFO    opendrift:2144: 2026-03-04 03:40:00 - step 95 of 300 - 5509 active elements (4491 deactivated)
14:14:28 INFO    opendrift:2144: 2026-03-04 03:50:00 - step 96 of 300 - 5377 active elements (4623 deactivated)
14:14:28 INFO    opendrift:2144: 2026-03-04 04:00:00 - step 97 of 300 - 5216 active elements (4784 deactivated)
14:14:29 INFO    opendrift:2144: 2026-03-04 04:10:00 - step 98 of 300 - 5078 active elements (4922 deactivated)
14:14:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:29 INFO    opendrift:2144: 2026-03-04 04:20:00 - step 99 of 300 - 4917 active elements (5083 deactivated)
14:14:29 INFO    opendrift:2144: 2026-03-04 04:30:00 - step 100 of 300 - 4763 active elements (5237 deactivated)
14:14:29 INFO    opendrift:2144: 2026-03-04 04:40:00 - step 101 of 300 - 4634 active elements (5366 deactivated)
14:14:30 INFO    opendrift:2144: 2026-03-04 04:50:00 - step 102 of 300 - 4493 active elements (5507 deactivated)
14:14:30 INFO    opendrift:2144: 2026-03-04 05:00:00 - step 103 of 300 - 4332 active elements (5668 deactivated)
14:14:30 INFO    opendrift:2144: 2026-03-04 05:10:00 - step 104 of 300 - 4187 active elements (5813 deactivated)
14:14:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:30 INFO    opendrift:2144: 2026-03-04 05:20:00 - step 105 of 300 - 4041 active elements (5959 deactivated)
14:14:30 INFO    opendrift:2144: 2026-03-04 05:30:00 - step 106 of 300 - 3903 active elements (6097 deactivated)
14:14:31 INFO    opendrift:2144: 2026-03-04 05:40:00 - step 107 of 300 - 3756 active elements (6244 deactivated)
14:14:31 INFO    opendrift:2144: 2026-03-04 05:50:00 - step 108 of 300 - 3591 active elements (6409 deactivated)
14:14:31 INFO    opendrift:2144: 2026-03-04 06:00:00 - step 109 of 300 - 3443 active elements (6557 deactivated)
14:14:31 INFO    opendrift:2144: 2026-03-04 06:10:00 - step 110 of 300 - 3271 active elements (6729 deactivated)
14:14:31 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:31 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:31 INFO    opendrift:2144: 2026-03-04 06:20:00 - step 111 of 300 - 3109 active elements (6891 deactivated)
14:14:31 INFO    opendrift:2144: 2026-03-04 06:30:00 - step 112 of 300 - 2965 active elements (7035 deactivated)
14:14:32 INFO    opendrift:2144: 2026-03-04 06:40:00 - step 113 of 300 - 2810 active elements (7190 deactivated)
14:14:32 INFO    opendrift:2144: 2026-03-04 06:50:00 - step 114 of 300 - 2645 active elements (7355 deactivated)
14:14:32 INFO    opendrift:2144: 2026-03-04 07:00:00 - step 115 of 300 - 2502 active elements (7498 deactivated)
14:14:32 INFO    opendrift:2144: 2026-03-04 07:10:00 - step 116 of 300 - 2346 active elements (7654 deactivated)
14:14:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:32 INFO    opendrift:2144: 2026-03-04 07:20:00 - step 117 of 300 - 2189 active elements (7811 deactivated)
14:14:32 INFO    opendrift:2144: 2026-03-04 07:30:00 - step 118 of 300 - 2049 active elements (7951 deactivated)
14:14:32 INFO    opendrift:2144: 2026-03-04 07:40:00 - step 119 of 300 - 1900 active elements (8100 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 07:50:00 - step 120 of 300 - 1776 active elements (8224 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 08:00:00 - step 121 of 300 - 1652 active elements (8348 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 08:10:00 - step 122 of 300 - 1537 active elements (8463 deactivated)
14:14:33 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:33 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:33 INFO    opendrift:2144: 2026-03-04 08:20:00 - step 123 of 300 - 1427 active elements (8573 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 08:30:00 - step 124 of 300 - 1338 active elements (8662 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 08:40:00 - step 125 of 300 - 1241 active elements (8759 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 08:50:00 - step 126 of 300 - 1134 active elements (8866 deactivated)
14:14:33 INFO    opendrift:2144: 2026-03-04 09:00:00 - step 127 of 300 - 1039 active elements (8961 deactivated)
14:14:34 INFO    opendrift:2144: 2026-03-04 09:10:00 - step 128 of 300 - 929 active elements (9071 deactivated)
14:14:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:34 INFO    opendrift:2144: 2026-03-04 09:20:00 - step 129 of 300 - 838 active elements (9162 deactivated)
14:14:34 INFO    opendrift:2144: 2026-03-04 09:30:00 - step 130 of 300 - 738 active elements (9262 deactivated)
14:14:34 INFO    opendrift:2144: 2026-03-04 09:40:00 - step 131 of 300 - 648 active elements (9352 deactivated)
14:14:34 INFO    opendrift:2144: 2026-03-04 09:50:00 - step 132 of 300 - 583 active elements (9417 deactivated)
14:14:34 INFO    opendrift:2144: 2026-03-04 10:00:00 - step 133 of 300 - 513 active elements (9487 deactivated)
14:14:34 INFO    opendrift:2144: 2026-03-04 10:10:00 - step 134 of 300 - 449 active elements (9551 deactivated)
14:14:35 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:35 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:35 INFO    opendrift:2144: 2026-03-04 10:20:00 - step 135 of 300 - 403 active elements (9597 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 10:30:00 - step 136 of 300 - 342 active elements (9658 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 10:40:00 - step 137 of 300 - 289 active elements (9711 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 10:50:00 - step 138 of 300 - 243 active elements (9757 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 11:00:00 - step 139 of 300 - 206 active elements (9794 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 11:10:00 - step 140 of 300 - 169 active elements (9831 deactivated)
14:14:35 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:35 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:35 INFO    opendrift:2144: 2026-03-04 11:20:00 - step 141 of 300 - 133 active elements (9867 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 11:30:00 - step 142 of 300 - 111 active elements (9889 deactivated)
14:14:35 INFO    opendrift:2144: 2026-03-04 11:40:00 - step 143 of 300 - 86 active elements (9914 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 11:50:00 - step 144 of 300 - 67 active elements (9933 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 12:00:00 - step 145 of 300 - 55 active elements (9945 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 12:10:00 - step 146 of 300 - 49 active elements (9951 deactivated)
14:14:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:36 INFO    opendrift:2144: 2026-03-04 12:20:00 - step 147 of 300 - 40 active elements (9960 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 12:30:00 - step 148 of 300 - 29 active elements (9971 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 12:40:00 - step 149 of 300 - 23 active elements (9977 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 12:50:00 - step 150 of 300 - 21 active elements (9979 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 13:00:00 - step 151 of 300 - 18 active elements (9982 deactivated)
14:14:36 INFO    opendrift:2144: 2026-03-04 13:10:00 - step 152 of 300 - 16 active elements (9984 deactivated)
14:14:37 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:37 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:37 INFO    opendrift:2144: 2026-03-04 13:20:00 - step 153 of 300 - 13 active elements (9987 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 13:30:00 - step 154 of 300 - 12 active elements (9988 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 13:40:00 - step 155 of 300 - 11 active elements (9989 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 13:50:00 - step 156 of 300 - 9 active elements (9991 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 14:00:00 - step 157 of 300 - 7 active elements (9993 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 14:10:00 - step 158 of 300 - 6 active elements (9994 deactivated)
14:14:37 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:37 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:37 INFO    opendrift:2144: 2026-03-04 14:20:00 - step 159 of 300 - 5 active elements (9995 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 14:30:00 - step 160 of 300 - 5 active elements (9995 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 14:40:00 - step 161 of 300 - 5 active elements (9995 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 14:50:00 - step 162 of 300 - 4 active elements (9996 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 15:00:00 - step 163 of 300 - 4 active elements (9996 deactivated)
14:14:37 INFO    opendrift:2144: 2026-03-04 15:10:00 - step 164 of 300 - 4 active elements (9996 deactivated)
14:14:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:38 INFO    opendrift:2144: 2026-03-04 15:20:00 - step 165 of 300 - 4 active elements (9996 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 15:30:00 - step 166 of 300 - 3 active elements (9997 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 15:40:00 - step 167 of 300 - 3 active elements (9997 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 15:50:00 - step 168 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 16:00:00 - step 169 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 16:10:00 - step 170 of 300 - 2 active elements (9998 deactivated)
14:14:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:38 INFO    opendrift:2144: 2026-03-04 16:20:00 - step 171 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 16:30:00 - step 172 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 16:40:00 - step 173 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 16:50:00 - step 174 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 17:00:00 - step 175 of 300 - 2 active elements (9998 deactivated)
14:14:38 INFO    opendrift:2144: 2026-03-04 17:10:00 - step 176 of 300 - 2 active elements (9998 deactivated)
14:14:39 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:39 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:39 INFO    opendrift:2144: 2026-03-04 17:20:00 - step 177 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 17:30:00 - step 178 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 17:40:00 - step 179 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 17:50:00 - step 180 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 18:00:00 - step 181 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 18:10:00 - step 182 of 300 - 2 active elements (9998 deactivated)
14:14:39 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:39 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:39 INFO    opendrift:2144: 2026-03-04 18:20:00 - step 183 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 18:30:00 - step 184 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 18:40:00 - step 185 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 18:50:00 - step 186 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 19:00:00 - step 187 of 300 - 2 active elements (9998 deactivated)
14:14:39 INFO    opendrift:2144: 2026-03-04 19:10:00 - step 188 of 300 - 2 active elements (9998 deactivated)
14:14:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:40 INFO    opendrift:2144: 2026-03-04 19:20:00 - step 189 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 19:30:00 - step 190 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 19:40:00 - step 191 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 19:50:00 - step 192 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 20:00:00 - step 193 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 20:10:00 - step 194 of 300 - 2 active elements (9998 deactivated)
14:14:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:40 INFO    opendrift:2144: 2026-03-04 20:20:00 - step 195 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 20:30:00 - step 196 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 20:40:00 - step 197 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 20:50:00 - step 198 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 21:00:00 - step 199 of 300 - 2 active elements (9998 deactivated)
14:14:40 INFO    opendrift:2144: 2026-03-04 21:10:00 - step 200 of 300 - 2 active elements (9998 deactivated)
14:14:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:41 INFO    opendrift:2144: 2026-03-04 21:20:00 - step 201 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 21:30:00 - step 202 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 21:40:00 - step 203 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 21:50:00 - step 204 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 22:00:00 - step 205 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 22:10:00 - step 206 of 300 - 2 active elements (9998 deactivated)
14:14:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:41 INFO    opendrift:2144: 2026-03-04 22:20:00 - step 207 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 22:30:00 - step 208 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 22:40:00 - step 209 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 22:50:00 - step 210 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 23:00:00 - step 211 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 23:10:00 - step 212 of 300 - 2 active elements (9998 deactivated)
14:14:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:41 INFO    opendrift:2144: 2026-03-04 23:20:00 - step 213 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 23:30:00 - step 214 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 23:40:00 - step 215 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-04 23:50:00 - step 216 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-05 00:00:00 - step 217 of 300 - 2 active elements (9998 deactivated)
14:14:41 INFO    opendrift:2144: 2026-03-05 00:10:00 - step 218 of 300 - 2 active elements (9998 deactivated)
14:14:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:42 INFO    opendrift:2144: 2026-03-05 00:20:00 - step 219 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 00:30:00 - step 220 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 00:40:00 - step 221 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 00:50:00 - step 222 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 01:00:00 - step 223 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 01:10:00 - step 224 of 300 - 2 active elements (9998 deactivated)
14:14:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:42 INFO    opendrift:2144: 2026-03-05 01:20:00 - step 225 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 01:30:00 - step 226 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 01:40:00 - step 227 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 01:50:00 - step 228 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 02:00:00 - step 229 of 300 - 2 active elements (9998 deactivated)
14:14:42 INFO    opendrift:2144: 2026-03-05 02:10:00 - step 230 of 300 - 2 active elements (9998 deactivated)
14:14:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:43 INFO    opendrift:2144: 2026-03-05 02:20:00 - step 231 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 02:30:00 - step 232 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 02:40:00 - step 233 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 02:50:00 - step 234 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 03:00:00 - step 235 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 03:10:00 - step 236 of 300 - 2 active elements (9998 deactivated)
14:14:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:43 INFO    opendrift:2144: 2026-03-05 03:20:00 - step 237 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 03:30:00 - step 238 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 03:40:00 - step 239 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 03:50:00 - step 240 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 04:00:00 - step 241 of 300 - 2 active elements (9998 deactivated)
14:14:43 INFO    opendrift:2144: 2026-03-05 04:10:00 - step 242 of 300 - 2 active elements (9998 deactivated)
14:14:44 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:44 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:44 INFO    opendrift:2144: 2026-03-05 04:20:00 - step 243 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 04:30:00 - step 244 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 04:40:00 - step 245 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 04:50:00 - step 246 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 05:00:00 - step 247 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 05:10:00 - step 248 of 300 - 2 active elements (9998 deactivated)
14:14:44 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:44 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:44 INFO    opendrift:2144: 2026-03-05 05:20:00 - step 249 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 05:30:00 - step 250 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 05:40:00 - step 251 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 05:50:00 - step 252 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 06:00:00 - step 253 of 300 - 2 active elements (9998 deactivated)
14:14:44 INFO    opendrift:2144: 2026-03-05 06:10:00 - step 254 of 300 - 2 active elements (9998 deactivated)
14:14:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:45 INFO    opendrift:2144: 2026-03-05 06:20:00 - step 255 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 06:30:00 - step 256 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 06:40:00 - step 257 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 06:50:00 - step 258 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 07:00:00 - step 259 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 07:10:00 - step 260 of 300 - 2 active elements (9998 deactivated)
14:14:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:45 INFO    opendrift:2144: 2026-03-05 07:20:00 - step 261 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 07:30:00 - step 262 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 07:40:00 - step 263 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 07:50:00 - step 264 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 08:00:00 - step 265 of 300 - 2 active elements (9998 deactivated)
14:14:45 INFO    opendrift:2144: 2026-03-05 08:10:00 - step 266 of 300 - 2 active elements (9998 deactivated)
14:14:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:46 INFO    opendrift:2144: 2026-03-05 08:20:00 - step 267 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 08:30:00 - step 268 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 08:40:00 - step 269 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 08:50:00 - step 270 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 09:00:00 - step 271 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 09:10:00 - step 272 of 300 - 2 active elements (9998 deactivated)
14:14:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:46 INFO    opendrift:2144: 2026-03-05 09:20:00 - step 273 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 09:30:00 - step 274 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 09:40:00 - step 275 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 09:50:00 - step 276 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 10:00:00 - step 277 of 300 - 2 active elements (9998 deactivated)
14:14:46 INFO    opendrift:2144: 2026-03-05 10:10:00 - step 278 of 300 - 2 active elements (9998 deactivated)
14:14:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:47 INFO    opendrift:2144: 2026-03-05 10:20:00 - step 279 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 10:30:00 - step 280 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 10:40:00 - step 281 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 10:50:00 - step 282 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 11:00:00 - step 283 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 11:10:00 - step 284 of 300 - 2 active elements (9998 deactivated)
14:14:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:47 INFO    opendrift:2144: 2026-03-05 11:20:00 - step 285 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 11:30:00 - step 286 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 11:40:00 - step 287 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 11:50:00 - step 288 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 12:00:00 - step 289 of 300 - 2 active elements (9998 deactivated)
14:14:47 INFO    opendrift:2144: 2026-03-05 12:10:00 - step 290 of 300 - 2 active elements (9998 deactivated)
14:14:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:48 INFO    opendrift:2144: 2026-03-05 12:20:00 - step 291 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 12:30:00 - step 292 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 12:40:00 - step 293 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 12:50:00 - step 294 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 13:00:00 - step 295 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 13:10:00 - step 296 of 300 - 2 active elements (9998 deactivated)
14:14:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:14:48 INFO    opendrift:2144: 2026-03-05 13:20:00 - step 297 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 13:30:00 - step 298 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 13:40:00 - step 299 of 300 - 2 active elements (9998 deactivated)
14:14:48 INFO    opendrift:2144: 2026-03-05 13:50:00 - step 300 of 300 - 2 active elements (9998 deactivated)

<xarray.Dataset> Size: 45MB
Dimensions:                                   (trajectory: 10000, time: 51)
Coordinates:
  * trajectory                                (trajectory) int64 80kB 0 ... 9999
  * time                                      (time) datetime64[ns] 408B 2026...
Data variables: (12/22)
    status                                    (trajectory, time) float32 2MB ...
    moving                                    (trajectory, time) float32 2MB ...
    age_seconds                               (trajectory, time) float32 2MB ...
    origin_marker                             (trajectory, time) float32 2MB ...
    lon                                       (trajectory, time) float32 2MB ...
    lat                                       (trajectory, time) float32 2MB ...
    ...                                        ...
    horizontal_diffusivity                    (trajectory, time) float32 2MB ...
    sea_surface_wave_significant_height       (trajectory, time) float32 2MB ...
    sea_surface_wave_stokes_drift_x_velocity  (trajectory, time) float32 2MB ...
    sea_surface_wave_stokes_drift_y_velocity  (trajectory, time) float32 2MB ...
    sea_floor_depth_below_sea_level           (trajectory, time) float32 2MB ...
    land_binary_mask                          (trajectory, time) float32 2MB ...
Attributes: (12/122)
    Conventions:                                                           CF...
    standard_name_vocabulary:                                              CF...
    featureType:                                                           tr...
    title:                                                                 Op...
    summary:                                                               Ou...
    keywords:                                                              tr...
    ...                                                                    ...
    geospatial_lon_units:                                                  de...
    geospatial_lon_resolution:                                             point
    runtime:                                                               0:...
    geospatial_vertical_min:                                               0.0
    geospatial_vertical_max:                                               0.0
    geospatial_vertical_positive:                                          up

xarray.Dataset

• Dimensions:
  • trajectory: 10000
  • time: 51
• Coordinates: (2)
  • trajectory
    (trajectory)
    int64
    0 1 2 3 4 ... 9996 9997 9998 9999

    cf_role :

    trajectory_id

    dtype :

    <class 'numpy.int32'>

    array([   0,    1,    2, ..., 9997, 9998, 9999], shape=(10000,))

  • time
    (time)
    datetime64[ns]
    2026-03-03T12:00:00 ... 2026-03-...

    standard_name :

    time

    long_name :

    time

    dtype :

    <class 'numpy.float64'>

    array(['2026-03-03T12:00:00.000000000', '2026-03-03T13:00:00.000000000',
           '2026-03-03T14:00:00.000000000', '2026-03-03T15:00:00.000000000',
           '2026-03-03T16:00:00.000000000', '2026-03-03T17:00:00.000000000',
           '2026-03-03T18:00:00.000000000', '2026-03-03T19:00:00.000000000',
           '2026-03-03T20:00:00.000000000', '2026-03-03T21:00:00.000000000',
           '2026-03-03T22:00:00.000000000', '2026-03-03T23:00:00.000000000',
           '2026-03-04T00:00:00.000000000', '2026-03-04T01:00:00.000000000',
           '2026-03-04T02:00:00.000000000', '2026-03-04T03:00:00.000000000',
           '2026-03-04T04:00:00.000000000', '2026-03-04T05:00:00.000000000',
           '2026-03-04T06:00:00.000000000', '2026-03-04T07:00:00.000000000',
           '2026-03-04T08:00:00.000000000', '2026-03-04T09:00:00.000000000',
           '2026-03-04T10:00:00.000000000', '2026-03-04T11:00:00.000000000',
           '2026-03-04T12:00:00.000000000', '2026-03-04T13:00:00.000000000',
           '2026-03-04T14:00:00.000000000', '2026-03-04T15:00:00.000000000',
           '2026-03-04T16:00:00.000000000', '2026-03-04T17:00:00.000000000',
           '2026-03-04T18:00:00.000000000', '2026-03-04T19:00:00.000000000',
           '2026-03-04T20:00:00.000000000', '2026-03-04T21:00:00.000000000',
           '2026-03-04T22:00:00.000000000', '2026-03-04T23:00:00.000000000',
           '2026-03-05T00:00:00.000000000', '2026-03-05T01:00:00.000000000',
           '2026-03-05T02:00:00.000000000', '2026-03-05T03:00:00.000000000',
           '2026-03-05T04:00:00.000000000', '2026-03-05T05:00:00.000000000',
           '2026-03-05T06:00:00.000000000', '2026-03-05T07:00:00.000000000',
           '2026-03-05T08:00:00.000000000', '2026-03-05T09:00:00.000000000',
           '2026-03-05T10:00:00.000000000', '2026-03-05T11:00:00.000000000',
           '2026-03-05T12:00:00.000000000', '2026-03-05T13:00:00.000000000',
           '2026-03-05T14:00:00.000000000'], dtype='datetime64[ns]')

• Data variables: (22)
  • status
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    dtype :

    <class 'numpy.int32'>

    valid_range :

    [0 1]

    flag_values :

    [0 1]

    flag_meanings :

    active stranded

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • moving
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... nan nan nan nan

    dtype :

    <class 'numpy.int32'>

    minval :

    0

    maxval :

    1

    array([[ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan],
           ...,
           [ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • age_seconds
    (trajectory, time)
    float32
    0.0 3.6e+03 7.2e+03 ... nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    s

    minval :

    0.0

    maxval :

    180000.0

    array([[   0., 3600., 7200., ...,   nan,   nan,   nan],
           [   0., 3600., 7200., ...,   nan,   nan,   nan],
           [   0., 3600., 7200., ...,   nan,   nan,   nan],
           ...,
           [   0., 3600., 7200., ...,   nan,   nan,   nan],
           [   0., 3600., 7200., ...,   nan,   nan,   nan],
           [   0., 3600., 7200., ...,   nan,   nan,   nan]],
          shape=(10000, 51), dtype=float32)

  • origin_marker
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    dtype :

    <class 'numpy.int32'>

    unit :

    description :

    An integer kept constant during the simulation. Different values may be used for different seedings, to separate elements during analysis. With GUI, only a single seeding is possible.

    flag_values :

    [0]

    flag_meanings :

    Seed_0

    minval :

    0

    maxval :

    0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • lon
    (trajectory, time)
    float32
    4.932 4.944 4.957 ... nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_east

    standard_name :

    longitude

    long_name :

    longitude

    axis :

    X

    minval :

    4.832955

    maxval :

    5.101406

    array([[4.931612 , 4.94356  , 4.956805 , ...,       nan,       nan,
                  nan],
           [4.90717  , 4.91983  , 4.933488 , ...,       nan,       nan,
                  nan],
           [4.917548 , 4.9308424, 4.943777 , ...,       nan,       nan,
                  nan],
           ...,
           [4.9092627, 4.921194 , 4.9334707, ...,       nan,       nan,
                  nan],
           [4.8994102, 4.913121 , 4.926378 , ...,       nan,       nan,
                  nan],
           [4.9232616, 4.9325824, 4.943988 , ...,       nan,       nan,
                  nan]], shape=(10000, 51), dtype=float32)

  • lat
    (trajectory, time)
    float32
    60.0 60.0 60.0 60.0 ... nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_north

    standard_name :

    latitude

    long_name :

    latitude

    axis :

    Y

    minval :

    59.95588

    maxval :

    60.208378

    array([[59.99818 , 59.999245, 59.99971 , ...,       nan,       nan,
                  nan],
           [59.99252 , 59.993744, 59.993908, ...,       nan,       nan,
                  nan],
           [60.01556 , 60.016766, 60.01772 , ...,       nan,       nan,
                  nan],
           ...,
           [59.999485, 60.000446, 60.00065 , ...,       nan,       nan,
                  nan],
           [59.990494, 59.989975, 59.989952, ...,       nan,       nan,
                  nan],
           [59.997066, 59.998375, 59.9993  , ...,       nan,       nan,
                  nan]], shape=(10000, 51), dtype=float32)

  • z
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    m

    standard_name :

    z

    long_name :

    vertical position

    axis :

    Z

    positive :

    up

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • wind_drift_factor
    (trajectory, time)
    float32
    0.02 0.02 0.02 0.02 ... nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    1

    description :

    Elements at surface are moved with this fraction of the vind vector, in addition to currents and Stokes drift

    minval :

    0.02

    maxval :

    0.02

    array([[0.02, 0.02, 0.02, ...,  nan,  nan,  nan],
           [0.02, 0.02, 0.02, ...,  nan,  nan,  nan],
           [0.02, 0.02, 0.02, ...,  nan,  nan,  nan],
           ...,
           [0.02, 0.02, 0.02, ...,  nan,  nan,  nan],
           [0.02, 0.02, 0.02, ...,  nan,  nan,  nan],
           [0.02, 0.02, 0.02, ...,  nan,  nan,  nan]],
          shape=(10000, 51), dtype=float32)

  • current_drift_factor
    (trajectory, time)
    float32
    1.0 1.0 1.0 1.0 ... nan nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    1

    description :

    Elements are moved with this fraction of the current vector, in addition to currents and Stokes drift

    minval :

    1.0

    maxval :

    1.0

    array([[ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan],
           ...,
           [ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • terminal_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    m/s

    description :

    Terminal rise/sinking velocity (buoyancy) in the ocean column

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • x_sea_water_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • y_sea_water_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • sea_surface_height
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • x_wind
    (trajectory, time)
    float32
    8.418 10.43 10.05 ... nan nan nan

    minval :

    -7.3225374

    maxval :

    13.4022665

    array([[ 8.418149 , 10.428089 , 10.050302 , ...,        nan,        nan,
                   nan],
           [ 8.959947 , 11.02243  , 10.007727 , ...,        nan,        nan,
                   nan],
           [ 9.147956 , 11.93233  ,  7.340992 , ...,        nan,        nan,
                   nan],
           ...,
           [ 8.800436 ,  9.927813 ,  8.9595585, ...,        nan,        nan,
                   nan],
           [10.792167 , 10.446561 , 10.00109  , ...,        nan,        nan,
                   nan],
           [ 6.657044 ,  7.9943223, 10.051874 , ...,        nan,        nan,
                   nan]], shape=(10000, 51), dtype=float32)

  • y_wind
    (trajectory, time)
    float32
    2.109 1.017 0.2949 ... nan nan nan

    minval :

    -4.183578

    maxval :

    12.1449175

    array([[ 2.1092782e+00,  1.0174263e+00,  2.9490492e-01, ...,
                       nan,            nan,            nan],
           [ 2.8626728e+00,  5.4743195e-01, -1.8842229e-01, ...,
                       nan,            nan,            nan],
           [ 2.5304365e+00,  9.5525819e-01,  2.1405940e+00, ...,
                       nan,            nan,            nan],
           ...,
           [ 2.1698182e+00,  5.1744121e-01,  6.0752925e-04, ...,
                       nan,            nan,            nan],
           [-5.2314645e-01, -1.1672785e+00,  1.5750892e+00, ...,
                       nan,            nan,            nan],
           [ 2.2233844e+00,  1.7594906e+00,  9.3475610e-01, ...,
                       nan,            nan,            nan]],
          shape=(10000, 51), dtype=float32)

  • upward_sea_water_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • horizontal_diffusivity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • sea_surface_wave_significant_height
    (trajectory, time)
    float32
    1.853 2.701 2.487 ... nan nan nan

    minval :

    0.055336375

    maxval :

    4.524024

    array([[1.8527312, 2.700593 , 2.4869502, ...,       nan,       nan,
                  nan],
           [2.1764984, 2.996124 , 2.4646764, ...,       nan,       nan,
                  nan],
           [2.2161698, 3.5250084, 1.4384186, ...,       nan,       nan,
                  nan],
           ...,
           [2.0210323, 2.4311984, 1.9747326, ...,       nan,       nan,
                  nan],
           [2.8719158, 2.7181318, 2.5215666, ...,       nan,       nan,
                  nan],
           [1.2117879, 1.648323 , 2.507083 , ...,       nan,       nan,
                  nan]], shape=(10000, 51), dtype=float32)

  • sea_surface_wave_stokes_drift_x_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • sea_surface_wave_stokes_drift_y_velocity
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

  • sea_floor_depth_below_sea_level
    (trajectory, time)
    float32
    1e+04 1e+04 1e+04 ... nan nan nan

    minval :

    10000.0

    maxval :

    10000.0

    array([[10000., 10000., 10000., ...,    nan,    nan,    nan],
           [10000., 10000., 10000., ...,    nan,    nan,    nan],
           [10000., 10000., 10000., ...,    nan,    nan,    nan],
           ...,
           [10000., 10000., 10000., ...,    nan,    nan,    nan],
           [10000., 10000., 10000., ...,    nan,    nan,    nan],
           [10000., 10000., 10000., ...,    nan,    nan,    nan]],
          shape=(10000, 51), dtype=float32)

  • land_binary_mask
    (trajectory, time)
    float32
    0.0 0.0 0.0 0.0 ... nan nan nan nan

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           ...,
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ..., nan, nan, nan]],
          shape=(10000, 51), dtype=float32)

• Indexes: (2)
  • trajectory
    PandasIndex

    PandasIndex(Index([   0,    1,    2,    3,    4,    5,    6,    7,    8,    9,
           ...
           9990, 9991, 9992, 9993, 9994, 9995, 9996, 9997, 9998, 9999],
          dtype='int64', name='trajectory', length=10000))

  • time
    PandasIndex

    PandasIndex(DatetimeIndex(['2026-03-03 12:00:00', '2026-03-03 13:00:00',
                   '2026-03-03 14:00:00', '2026-03-03 15:00:00',
                   '2026-03-03 16:00:00', '2026-03-03 17:00:00',
                   '2026-03-03 18:00:00', '2026-03-03 19:00:00',
                   '2026-03-03 20:00:00', '2026-03-03 21:00:00',
                   '2026-03-03 22:00:00', '2026-03-03 23:00:00',
                   '2026-03-04 00:00:00', '2026-03-04 01:00:00',
                   '2026-03-04 02:00:00', '2026-03-04 03:00:00',
                   '2026-03-04 04:00:00', '2026-03-04 05:00:00',
                   '2026-03-04 06:00:00', '2026-03-04 07:00:00',
                   '2026-03-04 08:00:00', '2026-03-04 09:00:00',
                   '2026-03-04 10:00:00', '2026-03-04 11:00:00',
                   '2026-03-04 12:00:00', '2026-03-04 13:00:00',
                   '2026-03-04 14:00:00', '2026-03-04 15:00:00',
                   '2026-03-04 16:00:00', '2026-03-04 17:00:00',
                   '2026-03-04 18:00:00', '2026-03-04 19:00:00',
                   '2026-03-04 20:00:00', '2026-03-04 21:00:00',
                   '2026-03-04 22:00:00', '2026-03-04 23:00:00',
                   '2026-03-05 00:00:00', '2026-03-05 01:00:00',
                   '2026-03-05 02:00:00', '2026-03-05 03:00:00',
                   '2026-03-05 04:00:00', '2026-03-05 05:00:00',
                   '2026-03-05 06:00:00', '2026-03-05 07:00:00',
                   '2026-03-05 08:00:00', '2026-03-05 09:00:00',
                   '2026-03-05 10:00:00', '2026-03-05 11:00:00',
                   '2026-03-05 12:00:00', '2026-03-05 13:00:00',
                   '2026-03-05 14:00:00'],
                  dtype='datetime64[ns]', name='time', freq='h'))

• Attributes: (122)

  Conventions :

  CF-1.11, ACDD-1.3

  standard_name_vocabulary :

  CF Standard Name Table v85

  featureType :

  trajectory

  title :

  OpenDrift trajectory simulation

  summary :

  Output from simulation with OpenDrift framework

  keywords :

  trajectory, drift, lagrangian, simulation

  history :

  Created 2026-03-03 14:14:03.755171

  date_created :

  2026-03-03T14:14:03.755188

  source :

  Output from simulation with OpenDrift

  model_url :

  https://github.com/OpenDrift/opendrift

  opendrift_class :

  OceanDrift

  opendrift_module :

  opendrift.models.oceandrift

  readers :

  odict_keys(['https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc', 'global_landmask'])

  time_coverage_start :

  2026-03-03 12:00:00

  time_step_calculation :

  0:10:00

  time_step_output :

  1:00:00

  config_environment:constant:x_sea_water_velocity :

  None

  config_environment:fallback:x_sea_water_velocity :

  0

  config_environment:constant:y_sea_water_velocity :

  None

  config_environment:fallback:y_sea_water_velocity :

  0

  config_environment:constant:sea_surface_height :

  None

  config_environment:fallback:sea_surface_height :

  0

  config_environment:constant:x_wind :

  None

  config_environment:fallback:x_wind :

  0

  config_environment:constant:y_wind :

  None

  config_environment:fallback:y_wind :

  0

  config_environment:constant:upward_sea_water_velocity :

  None

  config_environment:fallback:upward_sea_water_velocity :

  0

  config_environment:constant:ocean_vertical_diffusivity :

  None

  config_environment:fallback:ocean_vertical_diffusivity :

  0

  config_environment:constant:horizontal_diffusivity :

  None

  config_environment:fallback:horizontal_diffusivity :

  0

  config_environment:constant:sea_surface_wave_significant_height :

  None

  config_environment:fallback:sea_surface_wave_significant_height :

  0

  config_environment:constant:sea_surface_wave_stokes_drift_x_velocity :

  None

  config_environment:fallback:sea_surface_wave_stokes_drift_x_velocity :

  0

  config_environment:constant:sea_surface_wave_stokes_drift_y_velocity :

  None

  config_environment:fallback:sea_surface_wave_stokes_drift_y_velocity :

  0

  config_environment:constant:ocean_mixed_layer_thickness :

  None

  config_environment:fallback:ocean_mixed_layer_thickness :

  50

  config_environment:constant:sea_floor_depth_below_sea_level :

  None

  config_environment:fallback:sea_floor_depth_below_sea_level :

  10000

  config_environment:constant:land_binary_mask :

  None

  config_environment:fallback:land_binary_mask :

  None

  config_general:use_auto_landmask :

  True

  config_drift:current_uncertainty :

  0

  config_drift:current_uncertainty_uniform :

  0

  config_drift:max_speed :

  2.0

  config_readers:max_number_of_fails :

  1

  config_general:simulation_name :

  config_general:coastline_action :

  stranding

  config_general:coastline_approximation_precision :

  0.001

  config_general:time_step_minutes :

  60

  config_general:time_step_output_minutes :

  None

  config_seed:ocean_only :

  True

  config_seed:number :

  1

  config_drift:max_age_seconds :

  None

  config_drift:advection_scheme :

  euler

  config_drift:horizontal_diffusivity :

  0

  config_drift:profiles_depth :

  50

  config_drift:wind_uncertainty :

  0

  config_drift:relative_wind :

  False

  config_drift:deactivate_north_of :

  None

  config_drift:deactivate_south_of :

  None

  config_drift:deactivate_east_of :

  None

  config_drift:deactivate_west_of :

  None

  config_seed:origin_marker :

  0

  config_seed:z :

  0

  config_seed:wind_drift_factor :

  0.02

  config_seed:current_drift_factor :

  1

  config_seed:terminal_velocity :

  0.0

  config_drift:vertical_advection :

  True

  config_drift:vertical_advection_at_surface :

  False

  config_drift:water_column_stretching :

  False

  config_drift:vertical_advection_correction :

  False

  config_drift:vertical_mixing :

  False

  config_drift:vertical_mixing_at_surface :

  False

  config_vertical_mixing:timestep :

  60

  config_vertical_mixing:diffusivitymodel :

  environment

  config_vertical_mixing:background_diffusivity :

  1.2e-05

  config_vertical_mixing:TSprofiles :

  False

  config_drift:wind_drift_depth :

  0.1

  config_drift:stokes_drift :

  True

  config_drift:stokes_drift_profile :

  Phillips

  config_drift:use_tabularised_stokes_drift :

  False

  config_drift:tabularised_stokes_drift_fetch :

  25000

  config_general:seafloor_action :

  lift_to_seafloor

  config_drift:truncate_ocean_model_below_m :

  None

  config_seed:seafloor :

  False

  opendrift_version :

  1.14.8

  seed_geojson :

  {"features": [], "type": "FeatureCollection"}

  simulation_time :

  2026-03-03 14:14:03.767321

  reader_x_sea_water_velocity :

  0

  reader_y_sea_water_velocity :

  0

  reader_sea_surface_height :

  0

  reader_x_wind :

  ['https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc']

  reader_y_wind :

  ['https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc']

  reader_upward_sea_water_velocity :

  0

  reader_horizontal_diffusivity :

  0

  reader_sea_surface_wave_significant_height :

  0

  reader_sea_surface_wave_stokes_drift_x_velocity :

  0

  reader_sea_surface_wave_stokes_drift_y_velocity :

  0

  reader_sea_floor_depth_below_sea_level :

  10000

  reader_land_binary_mask :

  ['global_landmask']

  time_coverage_end :

  2026-03-05 14:00:00

  time_coverage_duration :

  P2DT2H0M0S

  time_coverage_resolution :

  P0DT0H10M0S

  performance :

  -------------------- Reader performance: -------------------- https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc 0:00:32.3 total 0:00:00.0 preparing 0:00:31.0 reading 0:00:08.3 interpolation 0:00:00.0 interpolation_time 0:00:01.3 rotating vectors 0:00:00.0 masking -------------------- global_landmask 0:00:03.0 total 0:00:00.0 preparing 0:00:02.9 reading 0:00:00.0 masking -------------------- Performance: 51.1 total time 6.0 configuration 0.0 preparing main loop 0.0 moving elements to ocean 45.0 main loop 1.1 updating elements 0.0 cleaning up --------------------

  geospatial_bounds_crs :

  EPSG:4326

  geospatial_bounds_vertical_crs :

  EPSG:5831

  geospatial_lat_min :

  59.95588

  geospatial_lat_max :

  60.208378

  geospatial_lat_units :

  degrees_north

  geospatial_lat_resolution :

  point

  geospatial_lon_min :

  4.832955

  geospatial_lon_max :

  5.101406

  geospatial_lon_units :

  degrees_east

  geospatial_lon_resolution :

  point

  runtime :

  0:00:51.170422

  geospatial_vertical_min :

  0.0

  geospatial_vertical_max :

  0.0

  geospatial_vertical_positive :

  up

Ensemble members are recycled among the 10000 particles

ensemble_number = np.remainder(np.arange(o.num_elements_total()), len(r.realizations)) + 1
o.animation(fast=True, color=ensemble_number, legend=['Member ' + str(i) for i in r.realizations], colorbar=False)

14:14:48 WARNING opendrift:2507: Plotting fast. This will make your plots less accurate.
14:14:50 INFO    opendrift:4705: Saving animation to /root/project/docs/source/gallery/animations/example_ensemble_0.gif...
14:15:30 INFO    opendrift:3128: Time to make animation: 0:00:41.376379

We see that elements forced by different wind ensemble members move differently

o.plot_memory_usage()