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)

14:07:50 INFO    opendrift:568: OpenDriftSimulation initialised (version 1.14.9 / v1.14.9-43-g22dbf7d)
14:07:50 INFO    opendrift.readers:64: Opening file with xr.open_dataset
14:07:51 INFO    opendrift.readers.reader_netCDF_CF_generic:340: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
14:07:51 INFO    opendrift.models.basemodel.environment:203: Adding a global landmask from GSHHG
14:07:56 INFO    opendrift.models.basemodel.environment:227: Fallback values will be used for the following variables which have no readers:
14:07:56 INFO    opendrift.models.basemodel.environment:230:    x_sea_water_velocity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    y_sea_water_velocity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    sea_surface_height: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    upward_sea_water_velocity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    ocean_vertical_diffusivity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    horizontal_diffusivity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_significant_height: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    ocean_mixed_layer_thickness: 50.000000
14:07:56 INFO    opendrift.models.basemodel.environment:230:    sea_floor_depth_below_sea_level: 10000.000000
14:07:56 INFO    opendrift:1894: Skipping environment variable ocean_vertical_diffusivity because of condition ['drift:vertical_mixing', 'is', False]
14:07:56 INFO    opendrift:1894: Skipping environment variable ocean_mixed_layer_thickness because of condition ['drift:vertical_mixing', 'is', False]
14:07:56 INFO    opendrift:1905: Storing previous values of element property lon because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
14:07:56 INFO    opendrift:1905: Storing previous values of element property lat because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
14:07:56 INFO    opendrift:1913: Storing previous values of environment variable sea_surface_height because of condition ['drift:vertical_advection', 'is', True]
14:07:56 INFO    opendrift:947: Using existing reader for land_binary_mask to move elements to ocean
14:07:56 INFO    opendrift:978: All points are in ocean
14:07:56 INFO    opendrift:2202: 2026-04-21 12:00:00 - step 1 of 300 - 10000 active elements (0 deactivated)
14:07:57 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:07:57 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:07:58 INFO    opendrift:2202: 2026-04-21 12:10:00 - step 2 of 300 - 10000 active elements (0 deactivated)
14:07:59 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:07:59 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:07:59 INFO    opendrift:2202: 2026-04-21 12:20:00 - step 3 of 300 - 10000 active elements (0 deactivated)
14:07:59 INFO    opendrift:2202: 2026-04-21 12:30:00 - step 4 of 300 - 10000 active elements (0 deactivated)
14:07:59 INFO    opendrift:2202: 2026-04-21 12:40:00 - step 5 of 300 - 10000 active elements (0 deactivated)
14:08:00 INFO    opendrift:2202: 2026-04-21 12:50:00 - step 6 of 300 - 10000 active elements (0 deactivated)
14:08:00 INFO    opendrift:2202: 2026-04-21 13:00:00 - step 7 of 300 - 10000 active elements (0 deactivated)
14:08:00 INFO    opendrift:2202: 2026-04-21 13:10:00 - step 8 of 300 - 10000 active elements (0 deactivated)
14:08:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:04 INFO    opendrift:2202: 2026-04-21 13:20:00 - step 9 of 300 - 10000 active elements (0 deactivated)
14:08:04 INFO    opendrift:2202: 2026-04-21 13:30:00 - step 10 of 300 - 10000 active elements (0 deactivated)
14:08:04 INFO    opendrift:2202: 2026-04-21 13:40:00 - step 11 of 300 - 10000 active elements (0 deactivated)
14:08:04 INFO    opendrift:2202: 2026-04-21 13:50:00 - step 12 of 300 - 10000 active elements (0 deactivated)
14:08:04 INFO    opendrift:2202: 2026-04-21 14:00:00 - step 13 of 300 - 10000 active elements (0 deactivated)
14:08:04 INFO    opendrift:2202: 2026-04-21 14:10:00 - step 14 of 300 - 10000 active elements (0 deactivated)
14:08:05 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:05 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:05 INFO    opendrift:2202: 2026-04-21 14:20:00 - step 15 of 300 - 10000 active elements (0 deactivated)
14:08:06 INFO    opendrift:2202: 2026-04-21 14:30:00 - step 16 of 300 - 10000 active elements (0 deactivated)
14:08:06 INFO    opendrift:2202: 2026-04-21 14:40:00 - step 17 of 300 - 10000 active elements (0 deactivated)
14:08:06 INFO    opendrift:2202: 2026-04-21 14:50:00 - step 18 of 300 - 10000 active elements (0 deactivated)
14:08:06 INFO    opendrift:2202: 2026-04-21 15:00:00 - step 19 of 300 - 10000 active elements (0 deactivated)
14:08:06 INFO    opendrift:2202: 2026-04-21 15:10:00 - step 20 of 300 - 10000 active elements (0 deactivated)
14:08:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:08 INFO    opendrift:2202: 2026-04-21 15:20:00 - step 21 of 300 - 10000 active elements (0 deactivated)
14:08:08 INFO    opendrift:2202: 2026-04-21 15:30:00 - step 22 of 300 - 10000 active elements (0 deactivated)
14:08:08 INFO    opendrift:2202: 2026-04-21 15:40:00 - step 23 of 300 - 10000 active elements (0 deactivated)
14:08:08 INFO    opendrift:2202: 2026-04-21 15:50:00 - step 24 of 300 - 10000 active elements (0 deactivated)
14:08:08 INFO    opendrift:2202: 2026-04-21 16:00:00 - step 25 of 300 - 10000 active elements (0 deactivated)
14:08:09 INFO    opendrift:2202: 2026-04-21 16:10:00 - step 26 of 300 - 10000 active elements (0 deactivated)
14:08:10 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:10 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:10 INFO    opendrift:2202: 2026-04-21 16:20:00 - step 27 of 300 - 10000 active elements (0 deactivated)
14:08:10 INFO    opendrift:2202: 2026-04-21 16:30:00 - step 28 of 300 - 10000 active elements (0 deactivated)
14:08:10 INFO    opendrift:2202: 2026-04-21 16:40:00 - step 29 of 300 - 10000 active elements (0 deactivated)
14:08:11 INFO    opendrift:2202: 2026-04-21 16:50:00 - step 30 of 300 - 10000 active elements (0 deactivated)
14:08:11 INFO    opendrift:2202: 2026-04-21 17:00:00 - step 31 of 300 - 10000 active elements (0 deactivated)
14:08:11 INFO    opendrift:2202: 2026-04-21 17:10:00 - step 32 of 300 - 10000 active elements (0 deactivated)
14:08:12 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:12 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:12 INFO    opendrift:2202: 2026-04-21 17:20:00 - step 33 of 300 - 10000 active elements (0 deactivated)
14:08:13 INFO    opendrift:2202: 2026-04-21 17:30:00 - step 34 of 300 - 10000 active elements (0 deactivated)
14:08:13 INFO    opendrift:2202: 2026-04-21 17:40:00 - step 35 of 300 - 10000 active elements (0 deactivated)
14:08:13 INFO    opendrift:2202: 2026-04-21 17:50:00 - step 36 of 300 - 10000 active elements (0 deactivated)
14:08:13 INFO    opendrift:2202: 2026-04-21 18:00:00 - step 37 of 300 - 10000 active elements (0 deactivated)
14:08:13 INFO    opendrift:2202: 2026-04-21 18:10:00 - step 38 of 300 - 10000 active elements (0 deactivated)
14:08:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:14 INFO    opendrift:2202: 2026-04-21 18:20:00 - step 39 of 300 - 10000 active elements (0 deactivated)
14:08:14 INFO    opendrift:2202: 2026-04-21 18:30:00 - step 40 of 300 - 10000 active elements (0 deactivated)
14:08:15 INFO    opendrift:2202: 2026-04-21 18:40:00 - step 41 of 300 - 10000 active elements (0 deactivated)
14:08:15 INFO    opendrift:2202: 2026-04-21 18:50:00 - step 42 of 300 - 10000 active elements (0 deactivated)
14:08:15 INFO    opendrift:2202: 2026-04-21 19:00:00 - step 43 of 300 - 10000 active elements (0 deactivated)
14:08:15 INFO    opendrift:2202: 2026-04-21 19:10:00 - step 44 of 300 - 10000 active elements (0 deactivated)
14:08:16 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:16 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:16 INFO    opendrift:2202: 2026-04-21 19:20:00 - step 45 of 300 - 10000 active elements (0 deactivated)
14:08:17 INFO    opendrift:2202: 2026-04-21 19:30:00 - step 46 of 300 - 10000 active elements (0 deactivated)
14:08:17 INFO    opendrift:2202: 2026-04-21 19:40:00 - step 47 of 300 - 10000 active elements (0 deactivated)
14:08:17 INFO    opendrift:2202: 2026-04-21 19:50:00 - step 48 of 300 - 10000 active elements (0 deactivated)
14:08:17 INFO    opendrift:2202: 2026-04-21 20:00:00 - step 49 of 300 - 10000 active elements (0 deactivated)
14:08:17 INFO    opendrift:2202: 2026-04-21 20:10:00 - step 50 of 300 - 10000 active elements (0 deactivated)
14:08:19 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:19 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:19 INFO    opendrift:2202: 2026-04-21 20:20:00 - step 51 of 300 - 10000 active elements (0 deactivated)
14:08:19 INFO    opendrift:2202: 2026-04-21 20:30:00 - step 52 of 300 - 10000 active elements (0 deactivated)
14:08:19 INFO    opendrift:2202: 2026-04-21 20:40:00 - step 53 of 300 - 10000 active elements (0 deactivated)
14:08:20 INFO    opendrift:2202: 2026-04-21 20:50:00 - step 54 of 300 - 10000 active elements (0 deactivated)
14:08:20 INFO    opendrift:2202: 2026-04-21 21:00:00 - step 55 of 300 - 10000 active elements (0 deactivated)
14:08:20 INFO    opendrift:2202: 2026-04-21 21:10:00 - step 56 of 300 - 10000 active elements (0 deactivated)
14:08:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:22 INFO    opendrift:2202: 2026-04-21 21:20:00 - step 57 of 300 - 10000 active elements (0 deactivated)
14:08:22 INFO    opendrift:2202: 2026-04-21 21:30:00 - step 58 of 300 - 10000 active elements (0 deactivated)
14:08:22 INFO    opendrift:2202: 2026-04-21 21:40:00 - step 59 of 300 - 10000 active elements (0 deactivated)
14:08:22 INFO    opendrift:2202: 2026-04-21 21:50:00 - step 60 of 300 - 10000 active elements (0 deactivated)
14:08:23 INFO    opendrift:2202: 2026-04-21 22:00:00 - step 61 of 300 - 10000 active elements (0 deactivated)
14:08:23 INFO    opendrift:2202: 2026-04-21 22:10:00 - step 62 of 300 - 10000 active elements (0 deactivated)
14:08:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:25 INFO    opendrift:2202: 2026-04-21 22:20:00 - step 63 of 300 - 10000 active elements (0 deactivated)
14:08:25 INFO    opendrift:2202: 2026-04-21 22:30:00 - step 64 of 300 - 10000 active elements (0 deactivated)
14:08:25 INFO    opendrift:2202: 2026-04-21 22:40:00 - step 65 of 300 - 10000 active elements (0 deactivated)
14:08:25 INFO    opendrift:2202: 2026-04-21 22:50:00 - step 66 of 300 - 10000 active elements (0 deactivated)
14:08:25 INFO    opendrift:2202: 2026-04-21 23:00:00 - step 67 of 300 - 10000 active elements (0 deactivated)
14:08:25 INFO    opendrift:2202: 2026-04-21 23:10:00 - step 68 of 300 - 10000 active elements (0 deactivated)
14:08:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:27 INFO    opendrift:2202: 2026-04-21 23:20:00 - step 69 of 300 - 10000 active elements (0 deactivated)
14:08:28 INFO    opendrift:2202: 2026-04-21 23:30:00 - step 70 of 300 - 10000 active elements (0 deactivated)
14:08:28 INFO    opendrift:2202: 2026-04-21 23:40:00 - step 71 of 300 - 10000 active elements (0 deactivated)
14:08:28 INFO    opendrift:2202: 2026-04-21 23:50:00 - step 72 of 300 - 10000 active elements (0 deactivated)
14:08:28 INFO    opendrift:2202: 2026-04-22 00:00:00 - step 73 of 300 - 10000 active elements (0 deactivated)
14:08:28 INFO    opendrift:2202: 2026-04-22 00:10:00 - step 74 of 300 - 10000 active elements (0 deactivated)
14:08:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:30 INFO    opendrift:2202: 2026-04-22 00:20:00 - step 75 of 300 - 10000 active elements (0 deactivated)
14:08:30 INFO    opendrift:2202: 2026-04-22 00:30:00 - step 76 of 300 - 10000 active elements (0 deactivated)
14:08:30 INFO    opendrift:2202: 2026-04-22 00:40:00 - step 77 of 300 - 10000 active elements (0 deactivated)
14:08:30 INFO    opendrift:2202: 2026-04-22 00:50:00 - step 78 of 300 - 10000 active elements (0 deactivated)
14:08:31 INFO    opendrift:2202: 2026-04-22 01:00:00 - step 79 of 300 - 10000 active elements (0 deactivated)
14:08:31 INFO    opendrift:2202: 2026-04-22 01:10:00 - step 80 of 300 - 10000 active elements (0 deactivated)
14:08:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:32 INFO    opendrift:2202: 2026-04-22 01:20:00 - step 81 of 300 - 10000 active elements (0 deactivated)
14:08:32 INFO    opendrift:2202: 2026-04-22 01:30:00 - step 82 of 300 - 10000 active elements (0 deactivated)
14:08:33 INFO    opendrift:2202: 2026-04-22 01:40:00 - step 83 of 300 - 10000 active elements (0 deactivated)
14:08:33 INFO    opendrift:2202: 2026-04-22 01:50:00 - step 84 of 300 - 10000 active elements (0 deactivated)
14:08:33 INFO    opendrift:2202: 2026-04-22 02:00:00 - step 85 of 300 - 10000 active elements (0 deactivated)
14:08:33 INFO    opendrift:2202: 2026-04-22 02:10:00 - step 86 of 300 - 10000 active elements (0 deactivated)
14:08:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:34 INFO    opendrift:2202: 2026-04-22 02:20:00 - step 87 of 300 - 10000 active elements (0 deactivated)
14:08:34 INFO    opendrift:2202: 2026-04-22 02:30:00 - step 88 of 300 - 10000 active elements (0 deactivated)
14:08:34 INFO    opendrift:2202: 2026-04-22 02:40:00 - step 89 of 300 - 10000 active elements (0 deactivated)
14:08:35 INFO    opendrift:2202: 2026-04-22 02:50:00 - step 90 of 300 - 10000 active elements (0 deactivated)
14:08:35 INFO    opendrift:2202: 2026-04-22 03:00:00 - step 91 of 300 - 10000 active elements (0 deactivated)
14:08:35 INFO    opendrift:2202: 2026-04-22 03:10:00 - step 92 of 300 - 10000 active elements (0 deactivated)
14:08:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:36 INFO    opendrift:2202: 2026-04-22 03:20:00 - step 93 of 300 - 10000 active elements (0 deactivated)
14:08:37 INFO    opendrift:2202: 2026-04-22 03:30:00 - step 94 of 300 - 10000 active elements (0 deactivated)
14:08:37 INFO    opendrift:2202: 2026-04-22 03:40:00 - step 95 of 300 - 10000 active elements (0 deactivated)
14:08:37 INFO    opendrift:2202: 2026-04-22 03:50:00 - step 96 of 300 - 10000 active elements (0 deactivated)
14:08:37 INFO    opendrift:2202: 2026-04-22 04:00:00 - step 97 of 300 - 10000 active elements (0 deactivated)
14:08:37 INFO    opendrift:2202: 2026-04-22 04:10:00 - step 98 of 300 - 10000 active elements (0 deactivated)
14:08:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:38 INFO    opendrift:2202: 2026-04-22 04:20:00 - step 99 of 300 - 10000 active elements (0 deactivated)
14:08:38 INFO    opendrift:2202: 2026-04-22 04:30:00 - step 100 of 300 - 10000 active elements (0 deactivated)
14:08:38 INFO    opendrift:2202: 2026-04-22 04:40:00 - step 101 of 300 - 10000 active elements (0 deactivated)
14:08:38 INFO    opendrift:2202: 2026-04-22 04:50:00 - step 102 of 300 - 10000 active elements (0 deactivated)
14:08:38 INFO    opendrift:2202: 2026-04-22 05:00:00 - step 103 of 300 - 10000 active elements (0 deactivated)
14:08:39 INFO    opendrift:2202: 2026-04-22 05:10:00 - step 104 of 300 - 10000 active elements (0 deactivated)
14:08:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:40 INFO    opendrift:2202: 2026-04-22 05:20:00 - step 105 of 300 - 10000 active elements (0 deactivated)
14:08:40 INFO    opendrift:2202: 2026-04-22 05:30:00 - step 106 of 300 - 10000 active elements (0 deactivated)
14:08:40 INFO    opendrift:2202: 2026-04-22 05:40:00 - step 107 of 300 - 10000 active elements (0 deactivated)
14:08:40 INFO    opendrift:2202: 2026-04-22 05:50:00 - step 108 of 300 - 10000 active elements (0 deactivated)
14:08:40 INFO    opendrift:2202: 2026-04-22 06:00:00 - step 109 of 300 - 10000 active elements (0 deactivated)
14:08:40 INFO    opendrift:2202: 2026-04-22 06:10:00 - step 110 of 300 - 10000 active elements (0 deactivated)
14:08:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:41 INFO    opendrift:2202: 2026-04-22 06:20:00 - step 111 of 300 - 10000 active elements (0 deactivated)
14:08:42 INFO    opendrift:2202: 2026-04-22 06:30:00 - step 112 of 300 - 10000 active elements (0 deactivated)
14:08:42 INFO    opendrift:2202: 2026-04-22 06:40:00 - step 113 of 300 - 10000 active elements (0 deactivated)
14:08:42 INFO    opendrift:2202: 2026-04-22 06:50:00 - step 114 of 300 - 10000 active elements (0 deactivated)
14:08:42 INFO    opendrift:2202: 2026-04-22 07:00:00 - step 115 of 300 - 10000 active elements (0 deactivated)
14:08:42 INFO    opendrift:2202: 2026-04-22 07:10:00 - step 116 of 300 - 10000 active elements (0 deactivated)
14:08:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:43 INFO    opendrift:2202: 2026-04-22 07:20:00 - step 117 of 300 - 10000 active elements (0 deactivated)
14:08:43 INFO    opendrift:2202: 2026-04-22 07:30:00 - step 118 of 300 - 10000 active elements (0 deactivated)
14:08:44 INFO    opendrift:2202: 2026-04-22 07:40:00 - step 119 of 300 - 10000 active elements (0 deactivated)
14:08:44 INFO    opendrift:2202: 2026-04-22 07:50:00 - step 120 of 300 - 10000 active elements (0 deactivated)
14:08:44 INFO    opendrift:2202: 2026-04-22 08:00:00 - step 121 of 300 - 10000 active elements (0 deactivated)
14:08:44 INFO    opendrift:2202: 2026-04-22 08:10:00 - step 122 of 300 - 10000 active elements (0 deactivated)
14:08:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:45 INFO    opendrift:2202: 2026-04-22 08:20:00 - step 123 of 300 - 10000 active elements (0 deactivated)
14:08:45 INFO    opendrift:2202: 2026-04-22 08:30:00 - step 124 of 300 - 10000 active elements (0 deactivated)
14:08:46 INFO    opendrift:2202: 2026-04-22 08:40:00 - step 125 of 300 - 10000 active elements (0 deactivated)
14:08:46 INFO    opendrift:2202: 2026-04-22 08:50:00 - step 126 of 300 - 10000 active elements (0 deactivated)
14:08:46 INFO    opendrift:2202: 2026-04-22 09:00:00 - step 127 of 300 - 10000 active elements (0 deactivated)
14:08:46 INFO    opendrift:2202: 2026-04-22 09:10:00 - step 128 of 300 - 10000 active elements (0 deactivated)
14:08:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:47 INFO    opendrift:2202: 2026-04-22 09:20:00 - step 129 of 300 - 10000 active elements (0 deactivated)
14:08:47 INFO    opendrift:2202: 2026-04-22 09:30:00 - step 130 of 300 - 10000 active elements (0 deactivated)
14:08:47 INFO    opendrift:2202: 2026-04-22 09:40:00 - step 131 of 300 - 10000 active elements (0 deactivated)
14:08:49 INFO    opendrift:2202: 2026-04-22 09:50:00 - step 132 of 300 - 10000 active elements (0 deactivated)
14:08:49 INFO    opendrift:2202: 2026-04-22 10:00:00 - step 133 of 300 - 10000 active elements (0 deactivated)
14:08:49 INFO    opendrift:2202: 2026-04-22 10:10:00 - step 134 of 300 - 10000 active elements (0 deactivated)
14:08:50 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:50 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:50 INFO    opendrift:2202: 2026-04-22 10:20:00 - step 135 of 300 - 10000 active elements (0 deactivated)
14:08:50 INFO    opendrift:2202: 2026-04-22 10:30:00 - step 136 of 300 - 10000 active elements (0 deactivated)
14:08:51 INFO    opendrift:2202: 2026-04-22 10:40:00 - step 137 of 300 - 10000 active elements (0 deactivated)
14:08:51 INFO    opendrift:2202: 2026-04-22 10:50:00 - step 138 of 300 - 10000 active elements (0 deactivated)
14:08:51 INFO    opendrift:2202: 2026-04-22 11:00:00 - step 139 of 300 - 10000 active elements (0 deactivated)
14:08:51 INFO    opendrift:2202: 2026-04-22 11:10:00 - step 140 of 300 - 10000 active elements (0 deactivated)
14:08:52 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:52 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:53 INFO    opendrift:2202: 2026-04-22 11:20:00 - step 141 of 300 - 10000 active elements (0 deactivated)
14:08:53 INFO    opendrift:2202: 2026-04-22 11:30:00 - step 142 of 300 - 10000 active elements (0 deactivated)
14:08:53 INFO    opendrift:2202: 2026-04-22 11:40:00 - step 143 of 300 - 10000 active elements (0 deactivated)
14:08:55 INFO    opendrift:2202: 2026-04-22 11:50:00 - step 144 of 300 - 9999 active elements (1 deactivated)
14:08:55 INFO    opendrift:2202: 2026-04-22 12:00:00 - step 145 of 300 - 9999 active elements (1 deactivated)
14:08:55 INFO    opendrift:2202: 2026-04-22 12:10:00 - step 146 of 300 - 9998 active elements (2 deactivated)
14:08:56 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:56 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:56 INFO    opendrift:2202: 2026-04-22 12:20:00 - step 147 of 300 - 9998 active elements (2 deactivated)
14:08:57 INFO    opendrift:2202: 2026-04-22 12:30:00 - step 148 of 300 - 9996 active elements (4 deactivated)
14:08:57 INFO    opendrift:2202: 2026-04-22 12:40:00 - step 149 of 300 - 9995 active elements (5 deactivated)
14:08:57 INFO    opendrift:2202: 2026-04-22 12:50:00 - step 150 of 300 - 9995 active elements (5 deactivated)
14:08:57 INFO    opendrift:2202: 2026-04-22 13:00:00 - step 151 of 300 - 9995 active elements (5 deactivated)
14:08:57 INFO    opendrift:2202: 2026-04-22 13:10:00 - step 152 of 300 - 9994 active elements (6 deactivated)
14:08:58 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:58 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:08:58 INFO    opendrift:2202: 2026-04-22 13:20:00 - step 153 of 300 - 9994 active elements (6 deactivated)
14:08:58 INFO    opendrift:2202: 2026-04-22 13:30:00 - step 154 of 300 - 9993 active elements (7 deactivated)
14:08:58 INFO    opendrift:2202: 2026-04-22 13:40:00 - step 155 of 300 - 9992 active elements (8 deactivated)
14:08:59 INFO    opendrift:2202: 2026-04-22 13:50:00 - step 156 of 300 - 9991 active elements (9 deactivated)
14:08:59 INFO    opendrift:2202: 2026-04-22 14:00:00 - step 157 of 300 - 9989 active elements (11 deactivated)
14:08:59 INFO    opendrift:2202: 2026-04-22 14:10:00 - step 158 of 300 - 9989 active elements (11 deactivated)
14:09:00 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:00 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:00 INFO    opendrift:2202: 2026-04-22 14:20:00 - step 159 of 300 - 9987 active elements (13 deactivated)
14:09:00 INFO    opendrift:2202: 2026-04-22 14:30:00 - step 160 of 300 - 9987 active elements (13 deactivated)
14:09:00 INFO    opendrift:2202: 2026-04-22 14:40:00 - step 161 of 300 - 9987 active elements (13 deactivated)
14:09:00 INFO    opendrift:2202: 2026-04-22 14:50:00 - step 162 of 300 - 9986 active elements (14 deactivated)
14:09:01 INFO    opendrift:2202: 2026-04-22 15:00:00 - step 163 of 300 - 9984 active elements (16 deactivated)
14:09:01 INFO    opendrift:2202: 2026-04-22 15:10:00 - step 164 of 300 - 9984 active elements (16 deactivated)
14:09:01 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:01 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:02 INFO    opendrift:2202: 2026-04-22 15:20:00 - step 165 of 300 - 9982 active elements (18 deactivated)
14:09:02 INFO    opendrift:2202: 2026-04-22 15:30:00 - step 166 of 300 - 9981 active elements (19 deactivated)
14:09:02 INFO    opendrift:2202: 2026-04-22 15:40:00 - step 167 of 300 - 9979 active elements (21 deactivated)
14:09:02 INFO    opendrift:2202: 2026-04-22 15:50:00 - step 168 of 300 - 9976 active elements (24 deactivated)
14:09:02 INFO    opendrift:2202: 2026-04-22 16:00:00 - step 169 of 300 - 9975 active elements (25 deactivated)
14:09:02 INFO    opendrift:2202: 2026-04-22 16:10:00 - step 170 of 300 - 9973 active elements (27 deactivated)
14:09:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:03 INFO    opendrift:2202: 2026-04-22 16:20:00 - step 171 of 300 - 9973 active elements (27 deactivated)
14:09:03 INFO    opendrift:2202: 2026-04-22 16:30:00 - step 172 of 300 - 9969 active elements (31 deactivated)
14:09:03 INFO    opendrift:2202: 2026-04-22 16:40:00 - step 173 of 300 - 9969 active elements (31 deactivated)
14:09:04 INFO    opendrift:2202: 2026-04-22 16:50:00 - step 174 of 300 - 9968 active elements (32 deactivated)
14:09:04 INFO    opendrift:2202: 2026-04-22 17:00:00 - step 175 of 300 - 9966 active elements (34 deactivated)
14:09:04 INFO    opendrift:2202: 2026-04-22 17:10:00 - step 176 of 300 - 9965 active elements (35 deactivated)
14:09:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:05 INFO    opendrift:2202: 2026-04-22 17:20:00 - step 177 of 300 - 9964 active elements (36 deactivated)
14:09:05 INFO    opendrift:2202: 2026-04-22 17:30:00 - step 178 of 300 - 9962 active elements (38 deactivated)
14:09:05 INFO    opendrift:2202: 2026-04-22 17:40:00 - step 179 of 300 - 9957 active elements (43 deactivated)
14:09:05 INFO    opendrift:2202: 2026-04-22 17:50:00 - step 180 of 300 - 9954 active elements (46 deactivated)
14:09:05 INFO    opendrift:2202: 2026-04-22 18:00:00 - step 181 of 300 - 9947 active elements (53 deactivated)
14:09:05 INFO    opendrift:2202: 2026-04-22 18:10:00 - step 182 of 300 - 9942 active elements (58 deactivated)
14:09:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:06 INFO    opendrift:2202: 2026-04-22 18:20:00 - step 183 of 300 - 9936 active elements (64 deactivated)
14:09:06 INFO    opendrift:2202: 2026-04-22 18:30:00 - step 184 of 300 - 9929 active elements (71 deactivated)
14:09:06 INFO    opendrift:2202: 2026-04-22 18:40:00 - step 185 of 300 - 9922 active elements (78 deactivated)
14:09:07 INFO    opendrift:2202: 2026-04-22 18:50:00 - step 186 of 300 - 9916 active elements (84 deactivated)
14:09:07 INFO    opendrift:2202: 2026-04-22 19:00:00 - step 187 of 300 - 9906 active elements (94 deactivated)
14:09:07 INFO    opendrift:2202: 2026-04-22 19:10:00 - step 188 of 300 - 9901 active elements (99 deactivated)
14:09:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:08 INFO    opendrift:2202: 2026-04-22 19:20:00 - step 189 of 300 - 9890 active elements (110 deactivated)
14:09:08 INFO    opendrift:2202: 2026-04-22 19:30:00 - step 190 of 300 - 9879 active elements (121 deactivated)
14:09:08 INFO    opendrift:2202: 2026-04-22 19:40:00 - step 191 of 300 - 9861 active elements (139 deactivated)
14:09:08 INFO    opendrift:2202: 2026-04-22 19:50:00 - step 192 of 300 - 9847 active elements (153 deactivated)
14:09:08 INFO    opendrift:2202: 2026-04-22 20:00:00 - step 193 of 300 - 9833 active elements (167 deactivated)
14:09:09 INFO    opendrift:2202: 2026-04-22 20:10:00 - step 194 of 300 - 9811 active elements (189 deactivated)
14:09:09 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:09 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:09 INFO    opendrift:2202: 2026-04-22 20:20:00 - step 195 of 300 - 9794 active elements (206 deactivated)
14:09:10 INFO    opendrift:2202: 2026-04-22 20:30:00 - step 196 of 300 - 9765 active elements (235 deactivated)
14:09:10 INFO    opendrift:2202: 2026-04-22 20:40:00 - step 197 of 300 - 9744 active elements (256 deactivated)
14:09:10 INFO    opendrift:2202: 2026-04-22 20:50:00 - step 198 of 300 - 9718 active elements (282 deactivated)
14:09:10 INFO    opendrift:2202: 2026-04-22 21:00:00 - step 199 of 300 - 9697 active elements (303 deactivated)
14:09:10 INFO    opendrift:2202: 2026-04-22 21:10:00 - step 200 of 300 - 9676 active elements (324 deactivated)
14:09:11 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:11 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:11 INFO    opendrift:2202: 2026-04-22 21:20:00 - step 201 of 300 - 9646 active elements (354 deactivated)
14:09:11 INFO    opendrift:2202: 2026-04-22 21:30:00 - step 202 of 300 - 9617 active elements (383 deactivated)
14:09:11 INFO    opendrift:2202: 2026-04-22 21:40:00 - step 203 of 300 - 9594 active elements (406 deactivated)
14:09:12 INFO    opendrift:2202: 2026-04-22 21:50:00 - step 204 of 300 - 9573 active elements (427 deactivated)
14:09:12 INFO    opendrift:2202: 2026-04-22 22:00:00 - step 205 of 300 - 9551 active elements (449 deactivated)
14:09:12 INFO    opendrift:2202: 2026-04-22 22:10:00 - step 206 of 300 - 9531 active elements (469 deactivated)
14:09:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:13 INFO    opendrift:2202: 2026-04-22 22:20:00 - step 207 of 300 - 9512 active elements (488 deactivated)
14:09:13 INFO    opendrift:2202: 2026-04-22 22:30:00 - step 208 of 300 - 9486 active elements (514 deactivated)
14:09:13 INFO    opendrift:2202: 2026-04-22 22:40:00 - step 209 of 300 - 9467 active elements (533 deactivated)
14:09:13 INFO    opendrift:2202: 2026-04-22 22:50:00 - step 210 of 300 - 9444 active elements (556 deactivated)
14:09:13 INFO    opendrift:2202: 2026-04-22 23:00:00 - step 211 of 300 - 9430 active elements (570 deactivated)
14:09:13 INFO    opendrift:2202: 2026-04-22 23:10:00 - step 212 of 300 - 9414 active elements (586 deactivated)
14:09:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:14 INFO    opendrift:2202: 2026-04-22 23:20:00 - step 213 of 300 - 9399 active elements (601 deactivated)
14:09:14 INFO    opendrift:2202: 2026-04-22 23:30:00 - step 214 of 300 - 9389 active elements (611 deactivated)
14:09:14 INFO    opendrift:2202: 2026-04-22 23:40:00 - step 215 of 300 - 9378 active elements (622 deactivated)
14:09:15 INFO    opendrift:2202: 2026-04-22 23:50:00 - step 216 of 300 - 9368 active elements (632 deactivated)
14:09:15 INFO    opendrift:2202: 2026-04-23 00:00:00 - step 217 of 300 - 9358 active elements (642 deactivated)
14:09:15 INFO    opendrift:2202: 2026-04-23 00:10:00 - step 218 of 300 - 9349 active elements (651 deactivated)
14:09:15 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:15 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:16 INFO    opendrift:2202: 2026-04-23 00:20:00 - step 219 of 300 - 9339 active elements (661 deactivated)
14:09:16 INFO    opendrift:2202: 2026-04-23 00:30:00 - step 220 of 300 - 9331 active elements (669 deactivated)
14:09:16 INFO    opendrift:2202: 2026-04-23 00:40:00 - step 221 of 300 - 9326 active elements (674 deactivated)
14:09:16 INFO    opendrift:2202: 2026-04-23 00:50:00 - step 222 of 300 - 9316 active elements (684 deactivated)
14:09:16 INFO    opendrift:2202: 2026-04-23 01:00:00 - step 223 of 300 - 9315 active elements (685 deactivated)
14:09:16 INFO    opendrift:2202: 2026-04-23 01:10:00 - step 224 of 300 - 9308 active elements (692 deactivated)
14:09:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:17 INFO    opendrift:2202: 2026-04-23 01:20:00 - step 225 of 300 - 9303 active elements (697 deactivated)
14:09:17 INFO    opendrift:2202: 2026-04-23 01:30:00 - step 226 of 300 - 9301 active elements (699 deactivated)
14:09:17 INFO    opendrift:2202: 2026-04-23 01:40:00 - step 227 of 300 - 9297 active elements (703 deactivated)
14:09:17 INFO    opendrift:2202: 2026-04-23 01:50:00 - step 228 of 300 - 9296 active elements (704 deactivated)
14:09:18 INFO    opendrift:2202: 2026-04-23 02:00:00 - step 229 of 300 - 9294 active elements (706 deactivated)
14:09:18 INFO    opendrift:2202: 2026-04-23 02:10:00 - step 230 of 300 - 9291 active elements (709 deactivated)
14:09:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:18 INFO    opendrift:2202: 2026-04-23 02:20:00 - step 231 of 300 - 9289 active elements (711 deactivated)
14:09:18 INFO    opendrift:2202: 2026-04-23 02:30:00 - step 232 of 300 - 9285 active elements (715 deactivated)
14:09:19 INFO    opendrift:2202: 2026-04-23 02:40:00 - step 233 of 300 - 9285 active elements (715 deactivated)
14:09:19 INFO    opendrift:2202: 2026-04-23 02:50:00 - step 234 of 300 - 9283 active elements (717 deactivated)
14:09:19 INFO    opendrift:2202: 2026-04-23 03:00:00 - step 235 of 300 - 9283 active elements (717 deactivated)
14:09:19 INFO    opendrift:2202: 2026-04-23 03:10:00 - step 236 of 300 - 9282 active elements (718 deactivated)
14:09:20 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:20 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:20 INFO    opendrift:2202: 2026-04-23 03:20:00 - step 237 of 300 - 9282 active elements (718 deactivated)
14:09:20 INFO    opendrift:2202: 2026-04-23 03:30:00 - step 238 of 300 - 9280 active elements (720 deactivated)
14:09:21 INFO    opendrift:2202: 2026-04-23 03:40:00 - step 239 of 300 - 9280 active elements (720 deactivated)
14:09:21 INFO    opendrift:2202: 2026-04-23 03:50:00 - step 240 of 300 - 9280 active elements (720 deactivated)
14:09:21 INFO    opendrift:2202: 2026-04-23 04:00:00 - step 241 of 300 - 9280 active elements (720 deactivated)
14:09:21 INFO    opendrift:2202: 2026-04-23 04:10:00 - step 242 of 300 - 9280 active elements (720 deactivated)
14:09:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:23 INFO    opendrift:2202: 2026-04-23 04:20:00 - step 243 of 300 - 9280 active elements (720 deactivated)
14:09:23 INFO    opendrift:2202: 2026-04-23 04:30:00 - step 244 of 300 - 9280 active elements (720 deactivated)
14:09:23 INFO    opendrift:2202: 2026-04-23 04:40:00 - step 245 of 300 - 9280 active elements (720 deactivated)
14:09:23 INFO    opendrift:2202: 2026-04-23 04:50:00 - step 246 of 300 - 9280 active elements (720 deactivated)
14:09:23 INFO    opendrift:2202: 2026-04-23 05:00:00 - step 247 of 300 - 9280 active elements (720 deactivated)
14:09:23 INFO    opendrift:2202: 2026-04-23 05:10:00 - step 248 of 300 - 9280 active elements (720 deactivated)
14:09:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:25 INFO    opendrift:2202: 2026-04-23 05:20:00 - step 249 of 300 - 9280 active elements (720 deactivated)
14:09:25 INFO    opendrift:2202: 2026-04-23 05:30:00 - step 250 of 300 - 9280 active elements (720 deactivated)
14:09:25 INFO    opendrift:2202: 2026-04-23 05:40:00 - step 251 of 300 - 9280 active elements (720 deactivated)
14:09:25 INFO    opendrift:2202: 2026-04-23 05:50:00 - step 252 of 300 - 9280 active elements (720 deactivated)
14:09:25 INFO    opendrift:2202: 2026-04-23 06:00:00 - step 253 of 300 - 9279 active elements (721 deactivated)
14:09:25 INFO    opendrift:2202: 2026-04-23 06:10:00 - step 254 of 300 - 9279 active elements (721 deactivated)
14:09:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:27 INFO    opendrift:2202: 2026-04-23 06:20:00 - step 255 of 300 - 9278 active elements (722 deactivated)
14:09:27 INFO    opendrift:2202: 2026-04-23 06:30:00 - step 256 of 300 - 9278 active elements (722 deactivated)
14:09:27 INFO    opendrift:2202: 2026-04-23 06:40:00 - step 257 of 300 - 9278 active elements (722 deactivated)
14:09:27 INFO    opendrift:2202: 2026-04-23 06:50:00 - step 258 of 300 - 9278 active elements (722 deactivated)
14:09:27 INFO    opendrift:2202: 2026-04-23 07:00:00 - step 259 of 300 - 9278 active elements (722 deactivated)
14:09:28 INFO    opendrift:2202: 2026-04-23 07:10:00 - step 260 of 300 - 9278 active elements (722 deactivated)
14:09:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:29 INFO    opendrift:2202: 2026-04-23 07:20:00 - step 261 of 300 - 9278 active elements (722 deactivated)
14:09:29 INFO    opendrift:2202: 2026-04-23 07:30:00 - step 262 of 300 - 9278 active elements (722 deactivated)
14:09:29 INFO    opendrift:2202: 2026-04-23 07:40:00 - step 263 of 300 - 9278 active elements (722 deactivated)
14:09:29 INFO    opendrift:2202: 2026-04-23 07:50:00 - step 264 of 300 - 9278 active elements (722 deactivated)
14:09:30 INFO    opendrift:2202: 2026-04-23 08:00:00 - step 265 of 300 - 9278 active elements (722 deactivated)
14:09:30 INFO    opendrift:2202: 2026-04-23 08:10:00 - step 266 of 300 - 9278 active elements (722 deactivated)
14:09:31 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:31 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:31 INFO    opendrift:2202: 2026-04-23 08:20:00 - step 267 of 300 - 9278 active elements (722 deactivated)
14:09:31 INFO    opendrift:2202: 2026-04-23 08:30:00 - step 268 of 300 - 9278 active elements (722 deactivated)
14:09:32 INFO    opendrift:2202: 2026-04-23 08:40:00 - step 269 of 300 - 9278 active elements (722 deactivated)
14:09:32 INFO    opendrift:2202: 2026-04-23 08:50:00 - step 270 of 300 - 9278 active elements (722 deactivated)
14:09:32 INFO    opendrift:2202: 2026-04-23 09:00:00 - step 271 of 300 - 9277 active elements (723 deactivated)
14:09:32 INFO    opendrift:2202: 2026-04-23 09:10:00 - step 272 of 300 - 9277 active elements (723 deactivated)
14:09:33 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:33 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:33 INFO    opendrift:2202: 2026-04-23 09:20:00 - step 273 of 300 - 9276 active elements (724 deactivated)
14:09:33 INFO    opendrift:2202: 2026-04-23 09:30:00 - step 274 of 300 - 9276 active elements (724 deactivated)
14:09:34 INFO    opendrift:2202: 2026-04-23 09:40:00 - step 275 of 300 - 9276 active elements (724 deactivated)
14:09:34 INFO    opendrift:2202: 2026-04-23 09:50:00 - step 276 of 300 - 9275 active elements (725 deactivated)
14:09:34 INFO    opendrift:2202: 2026-04-23 10:00:00 - step 277 of 300 - 9272 active elements (728 deactivated)
14:09:34 INFO    opendrift:2202: 2026-04-23 10:10:00 - step 278 of 300 - 9270 active elements (730 deactivated)
14:09:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:36 INFO    opendrift:2202: 2026-04-23 10:20:00 - step 279 of 300 - 9270 active elements (730 deactivated)
14:09:36 INFO    opendrift:2202: 2026-04-23 10:30:00 - step 280 of 300 - 9268 active elements (732 deactivated)
14:09:36 INFO    opendrift:2202: 2026-04-23 10:40:00 - step 281 of 300 - 9267 active elements (733 deactivated)
14:09:36 INFO    opendrift:2202: 2026-04-23 10:50:00 - step 282 of 300 - 9262 active elements (738 deactivated)
14:09:36 INFO    opendrift:2202: 2026-04-23 11:00:00 - step 283 of 300 - 9258 active elements (742 deactivated)
14:09:36 INFO    opendrift:2202: 2026-04-23 11:10:00 - step 284 of 300 - 9249 active elements (751 deactivated)
14:09:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:38 INFO    opendrift:2202: 2026-04-23 11:20:00 - step 285 of 300 - 9243 active elements (757 deactivated)
14:09:38 INFO    opendrift:2202: 2026-04-23 11:30:00 - step 286 of 300 - 9236 active elements (764 deactivated)
14:09:38 INFO    opendrift:2202: 2026-04-23 11:40:00 - step 287 of 300 - 9226 active elements (774 deactivated)
14:09:39 INFO    opendrift:2202: 2026-04-23 11:50:00 - step 288 of 300 - 9210 active elements (790 deactivated)
14:09:39 INFO    opendrift:2202: 2026-04-23 12:00:00 - step 289 of 300 - 9197 active elements (803 deactivated)
14:09:39 INFO    opendrift:2202: 2026-04-23 12:10:00 - step 290 of 300 - 9181 active elements (819 deactivated)
14:09:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:40 INFO    opendrift:2202: 2026-04-23 12:20:00 - step 291 of 300 - 9160 active elements (840 deactivated)
14:09:40 INFO    opendrift:2202: 2026-04-23 12:30:00 - step 292 of 300 - 9144 active elements (856 deactivated)
14:09:40 INFO    opendrift:2202: 2026-04-23 12:40:00 - step 293 of 300 - 9126 active elements (874 deactivated)
14:09:41 INFO    opendrift:2202: 2026-04-23 12:50:00 - step 294 of 300 - 9099 active elements (901 deactivated)
14:09:41 INFO    opendrift:2202: 2026-04-23 13:00:00 - step 295 of 300 - 9075 active elements (925 deactivated)
14:09:41 INFO    opendrift:2202: 2026-04-23 13:10:00 - step 296 of 300 - 9040 active elements (960 deactivated)
14:09:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
14:09:42 INFO    opendrift:2202: 2026-04-23 13:20:00 - step 297 of 300 - 9010 active elements (990 deactivated)
14:09:43 INFO    opendrift:2202: 2026-04-23 13:30:00 - step 298 of 300 - 8971 active elements (1029 deactivated)
14:09:43 INFO    opendrift:2202: 2026-04-23 13:40:00 - step 299 of 300 - 8926 active elements (1074 deactivated)
14:09:43 INFO    opendrift:2202: 2026-04-23 13:50:00 - step 300 of 300 - 8889 active elements (1111 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: (12/121)
    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]
    2026-04-21T12:00:00 ... 2026-04-...

    standard_name :

    time

    long_name :

    time

    dtype :

    <class 'numpy.float64'>

    array(['2026-04-21T12:00:00.000000000', '2026-04-21T13:00:00.000000000',
           '2026-04-21T14:00:00.000000000', '2026-04-21T15:00:00.000000000',
           '2026-04-21T16:00:00.000000000', '2026-04-21T17:00:00.000000000',
           '2026-04-21T18:00:00.000000000', '2026-04-21T19:00:00.000000000',
           '2026-04-21T20:00:00.000000000', '2026-04-21T21:00:00.000000000',
           '2026-04-21T22:00:00.000000000', '2026-04-21T23:00:00.000000000',
           '2026-04-22T00:00:00.000000000', '2026-04-22T01:00:00.000000000',
           '2026-04-22T02:00:00.000000000', '2026-04-22T03:00:00.000000000',
           '2026-04-22T04:00:00.000000000', '2026-04-22T05:00:00.000000000',
           '2026-04-22T06:00:00.000000000', '2026-04-22T07:00:00.000000000',
           '2026-04-22T08:00:00.000000000', '2026-04-22T09:00:00.000000000',
           '2026-04-22T10:00:00.000000000', '2026-04-22T11:00:00.000000000',
           '2026-04-22T12:00:00.000000000', '2026-04-22T13:00:00.000000000',
           '2026-04-22T14:00:00.000000000', '2026-04-22T15:00:00.000000000',
           '2026-04-22T16:00:00.000000000', '2026-04-22T17:00:00.000000000',
           '2026-04-22T18:00:00.000000000', '2026-04-22T19:00:00.000000000',
           '2026-04-22T20:00:00.000000000', '2026-04-22T21:00:00.000000000',
           '2026-04-22T22:00:00.000000000', '2026-04-22T23:00:00.000000000',
           '2026-04-23T00:00:00.000000000', '2026-04-23T01:00:00.000000000',
           '2026-04-23T02:00:00.000000000', '2026-04-23T03:00:00.000000000',
           '2026-04-23T04:00:00.000000000', '2026-04-23T05:00:00.000000000',
           '2026-04-23T06:00:00.000000000', '2026-04-23T07:00:00.000000000',
           '2026-04-23T08:00:00.000000000', '2026-04-23T09:00:00.000000000',
           '2026-04-23T10:00:00.000000000', '2026-04-23T11:00:00.000000000',
           '2026-04-23T12:00:00.000000000', '2026-04-23T13:00:00.000000000',
           '2026-04-23T14:00:00.000000000'], dtype='datetime64[ns]')

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

    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., ...,  0.,  0.,  1.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.]],
          shape=(10000, 51), dtype=float32)

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

    dtype :

    <class 'numpy.int32'>

    minval :

    0

    maxval :

    1

    array([[ 1.,  1.,  1., ..., nan, nan, nan],
           [ 1.,  1.,  1., ...,  1.,  1.,  0.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           ...,
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.],
           [ 1.,  1.,  1., ...,  1.,  1.,  1.]],
          shape=(10000, 51), dtype=float32)

  • age_seconds
    (trajectory, time)
    float32
    0.0 3.6e+03 ... 1.764e+05 1.8e+05

    dtype :

    <class 'numpy.float32'>

    units :

    s

    minval :

    0.0

    maxval :

    180000.0

    array([[     0.,   3600.,   7200., ...,     nan,     nan,     nan],
           [     0.,   3600.,   7200., ..., 172800., 176400., 178200.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           ...,
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.],
           [     0.,   3600.,   7200., ..., 172800., 176400., 180000.]],
          shape=(10000, 51), dtype=float32)

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

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

  • lon
    (trajectory, time)
    float32
    4.932 4.935 4.939 ... 5.079 5.085

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_east

    standard_name :

    longitude

    long_name :

    longitude

    axis :

    X

    minval :

    4.832955

    maxval :

    5.11441

    array([[4.931612 , 4.935446 , 4.9394712, ...,       nan,       nan,
                  nan],
           [4.90717  , 4.9103613, 4.9144645, ..., 5.0792966, 5.0840693,
            5.0865026],
           [4.917548 , 4.9210176, 4.925311 , ..., 5.0735946, 5.078808 ,
            5.08378  ],
           ...,
           [4.9092627, 4.9131665, 4.9175534, ..., 5.0723486, 5.0778594,
            5.083441 ],
           [4.8994102, 4.9041576, 4.9079523, ..., 5.0744753, 5.079494 ,
            5.084435 ],
           [4.9232616, 4.925624 , 4.9280205, ..., 5.073892 , 5.0791163,
            5.0846276]], shape=(10000, 51), dtype=float32)

  • lat
    (trajectory, time)
    float32
    60.0 60.0 59.99 ... 59.73 59.72

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_north

    standard_name :

    latitude

    long_name :

    latitude

    axis :

    Y

    minval :

    59.665184

    maxval :

    60.03229

    array([[59.99818 , 59.995327, 59.99166 , ...,       nan,       nan,
                  nan],
           [59.99252 , 59.99103 , 59.988235, ..., 59.699425, 59.69371 ,
            59.690926],
           [60.01556 , 60.013294, 60.01022 , ..., 59.740818, 59.73601 ,
            59.730927],
           ...,
           [59.999485, 59.99681 , 59.993473, ..., 59.7248  , 59.71934 ,
            59.714146],
           [59.990494, 59.98713 , 59.98329 , ..., 59.70153 , 59.696793,
            59.691566],
           [59.997066, 59.994873, 59.992588, ..., 59.735188, 59.72974 ,
            59.72423 ]], shape=(10000, 51), dtype=float32)

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

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

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

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

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

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

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

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

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

    minval :

    0.0

    maxval :

    0.0

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

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

    minval :

    0.0

    maxval :

    0.0

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

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

    minval :

    0.0

    maxval :

    0.0

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

  • x_wind
    (trajectory, time)
    float32
    2.905 3.07 3.182 ... 3.825 3.687

    minval :

    -0.526488

    maxval :

    5.497249

    array([[2.9053311, 3.0695214, 3.1818132, ...,       nan,       nan,
                  nan],
           [2.2766128, 2.7625015, 3.7779567, ..., 3.720788 , 3.7493196,
            3.922573 ],
           [2.1644604, 3.413263 , 3.2152023, ..., 4.2867727, 3.7766151,
            4.033931 ],
           ...,
           [2.8468144, 3.2769928, 3.5714748, ..., 3.8316815, 3.5072632,
            4.806356 ],
           [4.1718426, 2.999041 , 2.85394  , ..., 3.9618058, 4.355452 ,
            3.7236621],
           [1.9155098, 1.7178953, 2.0343292, ..., 4.231259 , 3.8252518,
            3.6873953]], shape=(10000, 51), dtype=float32)

  • y_wind
    (trajectory, time)
    float32
    -3.767 -5.315 ... -9.103 -8.812

    minval :

    -13.259427

    maxval :

    -1.5128864

    array([[ -3.7674007,  -5.3147936,  -6.186377 , ...,         nan,
                    nan,         nan],
           [ -1.7035147,  -3.1343546,  -5.988635 , ...,  -8.988115 ,
             -8.633373 ,  -8.599485 ],
           [ -3.242194 ,  -3.8892894,  -5.9657235, ...,  -7.398056 ,
             -7.496946 ,  -8.468615 ],
           ...,
           [ -3.9141397,  -4.460383 ,  -6.1321044, ...,  -9.132575 ,
            -10.266761 ,  -9.537189 ],
           [ -4.982952 ,  -5.526481 ,  -6.4949017, ...,  -8.145829 ,
             -7.320878 ,  -6.78153  ],
           [ -3.2989025,  -3.5338335,  -3.5180461, ...,  -8.425404 ,
             -9.103496 ,  -8.81198  ]], shape=(10000, 51), dtype=float32)

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

    minval :

    0.0

    maxval :

    0.0

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

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

    minval :

    0.0

    maxval :

    0.0

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

  • sea_surface_wave_significant_height
    (trajectory, time)
    float32
    0.5568 0.9267 1.191 ... 2.399 2.245

    minval :

    0.1522325

    maxval :

    4.5301414

    array([[0.5568027 , 0.92665714, 1.1905217 , ...,        nan,        nan,
                   nan],
           [0.19888926, 0.42940754, 1.233363  , ..., 2.3279095 , 2.179376  ,
            2.1977084 ],
           [0.37383908, 0.65871257, 1.1298137 , ..., 1.7984483 , 1.7334886 ,
            2.1645544 ],
           ...,
           [0.57625115, 0.7535889 , 1.23881   , ..., 2.4129083 , 2.895599  ,
            2.805852  ],
           [1.0389583 , 0.97259146, 1.2380863 , ..., 2.0184405 , 1.7851044 ,
            1.4724282 ],
           [0.35797763, 0.37980288, 0.40627253, ..., 2.1867177 , 2.398652  ,
            2.244698  ]], shape=(10000, 51), dtype=float32)

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

    minval :

    0.0

    maxval :

    0.0

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

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

    minval :

    0.0

    maxval :

    0.0

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

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

    minval :

    10000.0

    maxval :

    10000.0

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

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

    minval :

    0.0

    maxval :

    0.0

    array([[ 0.,  0.,  0., ..., nan, nan, nan],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           ...,
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.],
           [ 0.,  0.,  0., ...,  0.,  0.,  0.]],
          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(['2026-04-21 12:00:00', '2026-04-21 13:00:00',
                   '2026-04-21 14:00:00', '2026-04-21 15:00:00',
                   '2026-04-21 16:00:00', '2026-04-21 17:00:00',
                   '2026-04-21 18:00:00', '2026-04-21 19:00:00',
                   '2026-04-21 20:00:00', '2026-04-21 21:00:00',
                   '2026-04-21 22:00:00', '2026-04-21 23:00:00',
                   '2026-04-22 00:00:00', '2026-04-22 01:00:00',
                   '2026-04-22 02:00:00', '2026-04-22 03:00:00',
                   '2026-04-22 04:00:00', '2026-04-22 05:00:00',
                   '2026-04-22 06:00:00', '2026-04-22 07:00:00',
                   '2026-04-22 08:00:00', '2026-04-22 09:00:00',
                   '2026-04-22 10:00:00', '2026-04-22 11:00:00',
                   '2026-04-22 12:00:00', '2026-04-22 13:00:00',
                   '2026-04-22 14:00:00', '2026-04-22 15:00:00',
                   '2026-04-22 16:00:00', '2026-04-22 17:00:00',
                   '2026-04-22 18:00:00', '2026-04-22 19:00:00',
                   '2026-04-22 20:00:00', '2026-04-22 21:00:00',
                   '2026-04-22 22:00:00', '2026-04-22 23:00:00',
                   '2026-04-23 00:00:00', '2026-04-23 01:00:00',
                   '2026-04-23 02:00:00', '2026-04-23 03:00:00',
                   '2026-04-23 04:00:00', '2026-04-23 05:00:00',
                   '2026-04-23 06:00:00', '2026-04-23 07:00:00',
                   '2026-04-23 08:00:00', '2026-04-23 09:00:00',
                   '2026-04-23 10:00:00', '2026-04-23 11:00:00',
                   '2026-04-23 12:00:00', '2026-04-23 13:00:00',
                   '2026-04-23 14:00:00'],
                  dtype='datetime64[ns]', name='time', freq='h'))

• Attributes: (121)

  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 2026-04-21 14:07:56.647174

  date_created :

  2026-04-21T14:07:56.647192

  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 :

  2026-04-21 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: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 :

  1.14.9

  seed_geojson :

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

  simulation_time :

  2026-04-21 14:07:56.728464

  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 :

  2026-04-23 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 0:01:29.0 total 0:00:00.0 preparing 0:01:25.2 reading 0:00:27.2 interpolation 0:00:00.0 interpolation_time 0:00:03.6 rotating vectors 0:00:00.0 masking -------------------- global_landmask 0:00:02.2 total 0:00:00.0 preparing 0:00:02.1 reading 0:00:00.0 masking -------------------- Performance: 1:53.2 total time 6.3 configuration 0.1 preparing main loop 0.0 moving elements to ocean 1:46.7 main loop 3.5 updating elements 0.0 cleaning up --------------------

  geospatial_bounds_crs :

  EPSG:4326

  geospatial_bounds_vertical_crs :

  EPSG:5831

  geospatial_lat_min :

  59.665184

  geospatial_lat_max :

  60.03229

  geospatial_lat_units :

  degrees_north

  geospatial_lat_resolution :

  point

  geospatial_lon_min :

  4.832955

  geospatial_lon_max :

  5.11441

  geospatial_lon_units :

  degrees_east

  geospatial_lon_resolution :

  point

  runtime :

  0:01:53.220659

  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)

14:09:43 WARNING opendrift:2565: Plotting fast. This will make your plots less accurate.
14:09:45 INFO    opendrift:4768: Saving animation to /root/project/docs/source/gallery/animations/example_ensemble_0.gif...
14:10:30 INFO    opendrift:3191: Time to make animation: 0:00:47.388348

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

o.plot_memory_usage()