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)

16:14:37 INFO    opendrift:569: OpenDriftSimulation initialised (version 1.14.10 / v1.14.10-37-gd24556f)
16:14:37 INFO    opendrift.readers:67: Opening file with xr.open_dataset
16:14:38 INFO    opendrift.readers.reader_netCDF_CF_generic:340: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
16:14:38 INFO    opendrift.models.basemodel.environment:203: Adding a global landmask from GSHHG
16:14:45 INFO    opendrift.models.basemodel.environment:227: Fallback values will be used for the following variables which have no readers:
16:14:45 INFO    opendrift.models.basemodel.environment:230:    x_sea_water_velocity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    y_sea_water_velocity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    sea_surface_height: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    upward_sea_water_velocity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    ocean_vertical_diffusivity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    horizontal_diffusivity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_significant_height: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    ocean_mixed_layer_thickness: 50.000000
16:14:45 INFO    opendrift.models.basemodel.environment:230:    sea_floor_depth_below_sea_level: 10000.000000
16:14:45 INFO    opendrift:1903: Skipping environment variable ocean_vertical_diffusivity because of condition ['drift:vertical_mixing', 'is', False]
16:14:45 INFO    opendrift:1903: Skipping environment variable ocean_mixed_layer_thickness because of condition ['drift:vertical_mixing', 'is', False]
16:14:45 INFO    opendrift:1914: Storing previous values of element property lon because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
16:14:45 INFO    opendrift:1914: Storing previous values of element property lat because of condition (('general:coastline_action', 'in', ['stranding', 'previous']), 'or', ('general:seafloor_action', 'in', ['previous']))
16:14:45 INFO    opendrift:1922: Storing previous values of environment variable sea_surface_height because of condition ['drift:vertical_advection', 'is', True]
16:14:45 INFO    opendrift:955: Using existing reader for land_binary_mask to move elements to ocean
16:14:45 INFO    opendrift:986: All points are in ocean
16:14:45 INFO    opendrift:2213: 2026-08-21 14:00:00 - step 1 of 300 - 10000 active elements (0 deactivated)
16:14:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:45 INFO    opendrift:2213: 2026-08-21 14:10:00 - step 2 of 300 - 10000 active elements (0 deactivated)
16:14:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:46 INFO    opendrift:2213: 2026-08-21 14:20:00 - step 3 of 300 - 10000 active elements (0 deactivated)
16:14:46 INFO    opendrift:2213: 2026-08-21 14:30:00 - step 4 of 300 - 10000 active elements (0 deactivated)
16:14:46 INFO    opendrift:2213: 2026-08-21 14:40:00 - step 5 of 300 - 10000 active elements (0 deactivated)
16:14:47 INFO    opendrift:2213: 2026-08-21 14:50:00 - step 6 of 300 - 10000 active elements (0 deactivated)
16:14:47 INFO    opendrift:2213: 2026-08-21 15:00:00 - step 7 of 300 - 10000 active elements (0 deactivated)
16:14:47 INFO    opendrift:2213: 2026-08-21 15:10:00 - step 8 of 300 - 10000 active elements (0 deactivated)
16:14:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:48 INFO    opendrift:2213: 2026-08-21 15:20:00 - step 9 of 300 - 10000 active elements (0 deactivated)
16:14:48 INFO    opendrift:2213: 2026-08-21 15:30:00 - step 10 of 300 - 10000 active elements (0 deactivated)
16:14:48 INFO    opendrift:2213: 2026-08-21 15:40:00 - step 11 of 300 - 10000 active elements (0 deactivated)
16:14:49 INFO    opendrift:2213: 2026-08-21 15:50:00 - step 12 of 300 - 10000 active elements (0 deactivated)
16:14:49 INFO    opendrift:2213: 2026-08-21 16:00:00 - step 13 of 300 - 10000 active elements (0 deactivated)
16:14:49 INFO    opendrift:2213: 2026-08-21 16:10:00 - step 14 of 300 - 10000 active elements (0 deactivated)
16:14:49 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:49 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:49 INFO    opendrift:2213: 2026-08-21 16:20:00 - step 15 of 300 - 10000 active elements (0 deactivated)
16:14:50 INFO    opendrift:2213: 2026-08-21 16:30:00 - step 16 of 300 - 10000 active elements (0 deactivated)
16:14:50 INFO    opendrift:2213: 2026-08-21 16:40:00 - step 17 of 300 - 10000 active elements (0 deactivated)
16:14:50 INFO    opendrift:2213: 2026-08-21 16:50:00 - step 18 of 300 - 10000 active elements (0 deactivated)
16:14:50 INFO    opendrift:2213: 2026-08-21 17:00:00 - step 19 of 300 - 10000 active elements (0 deactivated)
16:14:50 INFO    opendrift:2213: 2026-08-21 17:10:00 - step 20 of 300 - 10000 active elements (0 deactivated)
16:14:51 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:51 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:51 INFO    opendrift:2213: 2026-08-21 17:20:00 - step 21 of 300 - 10000 active elements (0 deactivated)
16:14:51 INFO    opendrift:2213: 2026-08-21 17:30:00 - step 22 of 300 - 10000 active elements (0 deactivated)
16:14:51 INFO    opendrift:2213: 2026-08-21 17:40:00 - step 23 of 300 - 10000 active elements (0 deactivated)
16:14:51 INFO    opendrift:2213: 2026-08-21 17:50:00 - step 24 of 300 - 10000 active elements (0 deactivated)
16:14:51 INFO    opendrift:2213: 2026-08-21 18:00:00 - step 25 of 300 - 10000 active elements (0 deactivated)
16:14:51 INFO    opendrift:2213: 2026-08-21 18:10:00 - step 26 of 300 - 10000 active elements (0 deactivated)
16:14:52 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:52 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:52 INFO    opendrift:2213: 2026-08-21 18:20:00 - step 27 of 300 - 10000 active elements (0 deactivated)
16:14:52 INFO    opendrift:2213: 2026-08-21 18:30:00 - step 28 of 300 - 10000 active elements (0 deactivated)
16:14:52 INFO    opendrift:2213: 2026-08-21 18:40:00 - step 29 of 300 - 10000 active elements (0 deactivated)
16:14:52 INFO    opendrift:2213: 2026-08-21 18:50:00 - step 30 of 300 - 10000 active elements (0 deactivated)
16:14:52 INFO    opendrift:2213: 2026-08-21 19:00:00 - step 31 of 300 - 10000 active elements (0 deactivated)
16:14:52 INFO    opendrift:2213: 2026-08-21 19:10:00 - step 32 of 300 - 10000 active elements (0 deactivated)
16:14:53 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:53 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:53 INFO    opendrift:2213: 2026-08-21 19:20:00 - step 33 of 300 - 10000 active elements (0 deactivated)
16:14:53 INFO    opendrift:2213: 2026-08-21 19:30:00 - step 34 of 300 - 10000 active elements (0 deactivated)
16:14:53 INFO    opendrift:2213: 2026-08-21 19:40:00 - step 35 of 300 - 10000 active elements (0 deactivated)
16:14:53 INFO    opendrift:2213: 2026-08-21 19:50:00 - step 36 of 300 - 10000 active elements (0 deactivated)
16:14:53 INFO    opendrift:2213: 2026-08-21 20:00:00 - step 37 of 300 - 10000 active elements (0 deactivated)
16:14:53 INFO    opendrift:2213: 2026-08-21 20:10:00 - step 38 of 300 - 10000 active elements (0 deactivated)
16:14:55 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:55 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:55 INFO    opendrift:2213: 2026-08-21 20:20:00 - step 39 of 300 - 10000 active elements (0 deactivated)
16:14:55 INFO    opendrift:2213: 2026-08-21 20:30:00 - step 40 of 300 - 10000 active elements (0 deactivated)
16:14:55 INFO    opendrift:2213: 2026-08-21 20:40:00 - step 41 of 300 - 10000 active elements (0 deactivated)
16:14:55 INFO    opendrift:2213: 2026-08-21 20:50:00 - step 42 of 300 - 10000 active elements (0 deactivated)
16:14:55 INFO    opendrift:2213: 2026-08-21 21:00:00 - step 43 of 300 - 10000 active elements (0 deactivated)
16:14:56 INFO    opendrift:2213: 2026-08-21 21:10:00 - step 44 of 300 - 10000 active elements (0 deactivated)
16:14:56 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:56 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:56 INFO    opendrift:2213: 2026-08-21 21:20:00 - step 45 of 300 - 10000 active elements (0 deactivated)
16:14:56 INFO    opendrift:2213: 2026-08-21 21:30:00 - step 46 of 300 - 10000 active elements (0 deactivated)
16:14:56 INFO    opendrift:2213: 2026-08-21 21:40:00 - step 47 of 300 - 10000 active elements (0 deactivated)
16:14:56 INFO    opendrift:2213: 2026-08-21 21:50:00 - step 48 of 300 - 10000 active elements (0 deactivated)
16:14:56 INFO    opendrift:2213: 2026-08-21 22:00:00 - step 49 of 300 - 10000 active elements (0 deactivated)
16:14:57 INFO    opendrift:2213: 2026-08-21 22:10:00 - step 50 of 300 - 10000 active elements (0 deactivated)
16:14:57 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:57 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:57 INFO    opendrift:2213: 2026-08-21 22:20:00 - step 51 of 300 - 10000 active elements (0 deactivated)
16:14:57 INFO    opendrift:2213: 2026-08-21 22:30:00 - step 52 of 300 - 10000 active elements (0 deactivated)
16:14:57 INFO    opendrift:2213: 2026-08-21 22:40:00 - step 53 of 300 - 10000 active elements (0 deactivated)
16:14:58 INFO    opendrift:2213: 2026-08-21 22:50:00 - step 54 of 300 - 10000 active elements (0 deactivated)
16:14:58 INFO    opendrift:2213: 2026-08-21 23:00:00 - step 55 of 300 - 10000 active elements (0 deactivated)
16:14:58 INFO    opendrift:2213: 2026-08-21 23:10:00 - step 56 of 300 - 10000 active elements (0 deactivated)
16:14:58 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:58 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:14:58 INFO    opendrift:2213: 2026-08-21 23:20:00 - step 57 of 300 - 10000 active elements (0 deactivated)
16:14:59 INFO    opendrift:2213: 2026-08-21 23:30:00 - step 58 of 300 - 10000 active elements (0 deactivated)
16:14:59 INFO    opendrift:2213: 2026-08-21 23:40:00 - step 59 of 300 - 10000 active elements (0 deactivated)
16:14:59 INFO    opendrift:2213: 2026-08-21 23:50:00 - step 60 of 300 - 10000 active elements (0 deactivated)
16:14:59 INFO    opendrift:2213: 2026-08-22 00:00:00 - step 61 of 300 - 10000 active elements (0 deactivated)
16:14:59 INFO    opendrift:2213: 2026-08-22 00:10:00 - step 62 of 300 - 10000 active elements (0 deactivated)
16:15:00 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:00 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:00 INFO    opendrift:2213: 2026-08-22 00:20:00 - step 63 of 300 - 10000 active elements (0 deactivated)
16:15:00 INFO    opendrift:2213: 2026-08-22 00:30:00 - step 64 of 300 - 10000 active elements (0 deactivated)
16:15:00 INFO    opendrift:2213: 2026-08-22 00:40:00 - step 65 of 300 - 10000 active elements (0 deactivated)
16:15:00 INFO    opendrift:2213: 2026-08-22 00:50:00 - step 66 of 300 - 10000 active elements (0 deactivated)
16:15:00 INFO    opendrift:2213: 2026-08-22 01:00:00 - step 67 of 300 - 10000 active elements (0 deactivated)
16:15:00 INFO    opendrift:2213: 2026-08-22 01:10:00 - step 68 of 300 - 10000 active elements (0 deactivated)
16:15:01 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:01 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:01 INFO    opendrift:2213: 2026-08-22 01:20:00 - step 69 of 300 - 10000 active elements (0 deactivated)
16:15:01 INFO    opendrift:2213: 2026-08-22 01:30:00 - step 70 of 300 - 10000 active elements (0 deactivated)
16:15:01 INFO    opendrift:2213: 2026-08-22 01:40:00 - step 71 of 300 - 10000 active elements (0 deactivated)
16:15:01 INFO    opendrift:2213: 2026-08-22 01:50:00 - step 72 of 300 - 10000 active elements (0 deactivated)
16:15:01 INFO    opendrift:2213: 2026-08-22 02:00:00 - step 73 of 300 - 10000 active elements (0 deactivated)
16:15:01 INFO    opendrift:2213: 2026-08-22 02:10:00 - step 74 of 300 - 10000 active elements (0 deactivated)
16:15:02 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:02 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:02 INFO    opendrift:2213: 2026-08-22 02:20:00 - step 75 of 300 - 10000 active elements (0 deactivated)
16:15:02 INFO    opendrift:2213: 2026-08-22 02:30:00 - step 76 of 300 - 10000 active elements (0 deactivated)
16:15:02 INFO    opendrift:2213: 2026-08-22 02:40:00 - step 77 of 300 - 10000 active elements (0 deactivated)
16:15:02 INFO    opendrift:2213: 2026-08-22 02:50:00 - step 78 of 300 - 10000 active elements (0 deactivated)
16:15:03 INFO    opendrift:2213: 2026-08-22 03:00:00 - step 79 of 300 - 10000 active elements (0 deactivated)
16:15:03 INFO    opendrift:2213: 2026-08-22 03:10:00 - step 80 of 300 - 10000 active elements (0 deactivated)
16:15:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:03 INFO    opendrift:2213: 2026-08-22 03:20:00 - step 81 of 300 - 10000 active elements (0 deactivated)
16:15:03 INFO    opendrift:2213: 2026-08-22 03:30:00 - step 82 of 300 - 10000 active elements (0 deactivated)
16:15:04 INFO    opendrift:2213: 2026-08-22 03:40:00 - step 83 of 300 - 10000 active elements (0 deactivated)
16:15:04 INFO    opendrift:2213: 2026-08-22 03:50:00 - step 84 of 300 - 10000 active elements (0 deactivated)
16:15:04 INFO    opendrift:2213: 2026-08-22 04:00:00 - step 85 of 300 - 10000 active elements (0 deactivated)
16:15:04 INFO    opendrift:2213: 2026-08-22 04:10:00 - step 86 of 300 - 10000 active elements (0 deactivated)
16:15:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:05 INFO    opendrift:2213: 2026-08-22 04:20:00 - step 87 of 300 - 9999 active elements (1 deactivated)
16:15:05 INFO    opendrift:2213: 2026-08-22 04:30:00 - step 88 of 300 - 9999 active elements (1 deactivated)
16:15:05 INFO    opendrift:2213: 2026-08-22 04:40:00 - step 89 of 300 - 9999 active elements (1 deactivated)
16:15:05 INFO    opendrift:2213: 2026-08-22 04:50:00 - step 90 of 300 - 9998 active elements (2 deactivated)
16:15:05 INFO    opendrift:2213: 2026-08-22 05:00:00 - step 91 of 300 - 9998 active elements (2 deactivated)
16:15:05 INFO    opendrift:2213: 2026-08-22 05:10:00 - step 92 of 300 - 9998 active elements (2 deactivated)
16:15:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:06 INFO    opendrift:2213: 2026-08-22 05:20:00 - step 93 of 300 - 9992 active elements (8 deactivated)
16:15:06 INFO    opendrift:2213: 2026-08-22 05:30:00 - step 94 of 300 - 9988 active elements (12 deactivated)
16:15:06 INFO    opendrift:2213: 2026-08-22 05:40:00 - step 95 of 300 - 9982 active elements (18 deactivated)
16:15:06 INFO    opendrift:2213: 2026-08-22 05:50:00 - step 96 of 300 - 9975 active elements (25 deactivated)
16:15:07 INFO    opendrift:2213: 2026-08-22 06:00:00 - step 97 of 300 - 9969 active elements (31 deactivated)
16:15:07 INFO    opendrift:2213: 2026-08-22 06:10:00 - step 98 of 300 - 9965 active elements (35 deactivated)
16:15:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:07 INFO    opendrift:2213: 2026-08-22 06:20:00 - step 99 of 300 - 9954 active elements (46 deactivated)
16:15:07 INFO    opendrift:2213: 2026-08-22 06:30:00 - step 100 of 300 - 9949 active elements (51 deactivated)
16:15:08 INFO    opendrift:2213: 2026-08-22 06:40:00 - step 101 of 300 - 9938 active elements (62 deactivated)
16:15:08 INFO    opendrift:2213: 2026-08-22 06:50:00 - step 102 of 300 - 9928 active elements (72 deactivated)
16:15:08 INFO    opendrift:2213: 2026-08-22 07:00:00 - step 103 of 300 - 9910 active elements (90 deactivated)
16:15:08 INFO    opendrift:2213: 2026-08-22 07:10:00 - step 104 of 300 - 9892 active elements (108 deactivated)
16:15:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:09 INFO    opendrift:2213: 2026-08-22 07:20:00 - step 105 of 300 - 9872 active elements (128 deactivated)
16:15:09 INFO    opendrift:2213: 2026-08-22 07:30:00 - step 106 of 300 - 9849 active elements (151 deactivated)
16:15:09 INFO    opendrift:2213: 2026-08-22 07:40:00 - step 107 of 300 - 9823 active elements (177 deactivated)
16:15:09 INFO    opendrift:2213: 2026-08-22 07:50:00 - step 108 of 300 - 9790 active elements (210 deactivated)
16:15:09 INFO    opendrift:2213: 2026-08-22 08:00:00 - step 109 of 300 - 9758 active elements (242 deactivated)
16:15:09 INFO    opendrift:2213: 2026-08-22 08:10:00 - step 110 of 300 - 9737 active elements (263 deactivated)
16:15:11 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:11 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:11 INFO    opendrift:2213: 2026-08-22 08:20:00 - step 111 of 300 - 9708 active elements (292 deactivated)
16:15:11 INFO    opendrift:2213: 2026-08-22 08:30:00 - step 112 of 300 - 9684 active elements (316 deactivated)
16:15:11 INFO    opendrift:2213: 2026-08-22 08:40:00 - step 113 of 300 - 9661 active elements (339 deactivated)
16:15:11 INFO    opendrift:2213: 2026-08-22 08:50:00 - step 114 of 300 - 9611 active elements (389 deactivated)
16:15:12 INFO    opendrift:2213: 2026-08-22 09:00:00 - step 115 of 300 - 9581 active elements (419 deactivated)
16:15:12 INFO    opendrift:2213: 2026-08-22 09:10:00 - step 116 of 300 - 9552 active elements (448 deactivated)
16:15:12 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:12 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:12 INFO    opendrift:2213: 2026-08-22 09:20:00 - step 117 of 300 - 9528 active elements (472 deactivated)
16:15:12 INFO    opendrift:2213: 2026-08-22 09:30:00 - step 118 of 300 - 9505 active elements (495 deactivated)
16:15:12 INFO    opendrift:2213: 2026-08-22 09:40:00 - step 119 of 300 - 9476 active elements (524 deactivated)
16:15:13 INFO    opendrift:2213: 2026-08-22 09:50:00 - step 120 of 300 - 9449 active elements (551 deactivated)
16:15:13 INFO    opendrift:2213: 2026-08-22 10:00:00 - step 121 of 300 - 9417 active elements (583 deactivated)
16:15:13 INFO    opendrift:2213: 2026-08-22 10:10:00 - step 122 of 300 - 9401 active elements (599 deactivated)
16:15:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:13 INFO    opendrift:2213: 2026-08-22 10:20:00 - step 123 of 300 - 9381 active elements (619 deactivated)
16:15:14 INFO    opendrift:2213: 2026-08-22 10:30:00 - step 124 of 300 - 9353 active elements (647 deactivated)
16:15:14 INFO    opendrift:2213: 2026-08-22 10:40:00 - step 125 of 300 - 9334 active elements (666 deactivated)
16:15:14 INFO    opendrift:2213: 2026-08-22 10:50:00 - step 126 of 300 - 9324 active elements (676 deactivated)
16:15:14 INFO    opendrift:2213: 2026-08-22 11:00:00 - step 127 of 300 - 9311 active elements (689 deactivated)
16:15:14 INFO    opendrift:2213: 2026-08-22 11:10:00 - step 128 of 300 - 9304 active elements (696 deactivated)
16:15:16 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:16 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:16 INFO    opendrift:2213: 2026-08-22 11:20:00 - step 129 of 300 - 9287 active elements (713 deactivated)
16:15:16 INFO    opendrift:2213: 2026-08-22 11:30:00 - step 130 of 300 - 9270 active elements (730 deactivated)
16:15:16 INFO    opendrift:2213: 2026-08-22 11:40:00 - step 131 of 300 - 9263 active elements (737 deactivated)
16:15:16 INFO    opendrift:2213: 2026-08-22 11:50:00 - step 132 of 300 - 9254 active elements (746 deactivated)
16:15:16 INFO    opendrift:2213: 2026-08-22 12:00:00 - step 133 of 300 - 9250 active elements (750 deactivated)
16:15:16 INFO    opendrift:2213: 2026-08-22 12:10:00 - step 134 of 300 - 9240 active elements (760 deactivated)
16:15:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:17 INFO    opendrift:2213: 2026-08-22 12:20:00 - step 135 of 300 - 9231 active elements (769 deactivated)
16:15:17 INFO    opendrift:2213: 2026-08-22 12:30:00 - step 136 of 300 - 9225 active elements (775 deactivated)
16:15:17 INFO    opendrift:2213: 2026-08-22 12:40:00 - step 137 of 300 - 9216 active elements (784 deactivated)
16:15:18 INFO    opendrift:2213: 2026-08-22 12:50:00 - step 138 of 300 - 9211 active elements (789 deactivated)
16:15:18 INFO    opendrift:2213: 2026-08-22 13:00:00 - step 139 of 300 - 9203 active elements (797 deactivated)
16:15:18 INFO    opendrift:2213: 2026-08-22 13:10:00 - step 140 of 300 - 9191 active elements (809 deactivated)
16:15:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:18 INFO    opendrift:2213: 2026-08-22 13:20:00 - step 141 of 300 - 9177 active elements (823 deactivated)
16:15:19 INFO    opendrift:2213: 2026-08-22 13:30:00 - step 142 of 300 - 9159 active elements (841 deactivated)
16:15:19 INFO    opendrift:2213: 2026-08-22 13:40:00 - step 143 of 300 - 9138 active elements (862 deactivated)
16:15:19 INFO    opendrift:2213: 2026-08-22 13:50:00 - step 144 of 300 - 9116 active elements (884 deactivated)
16:15:19 INFO    opendrift:2213: 2026-08-22 14:00:00 - step 145 of 300 - 9083 active elements (917 deactivated)
16:15:19 INFO    opendrift:2213: 2026-08-22 14:10:00 - step 146 of 300 - 9030 active elements (970 deactivated)
16:15:19 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:19 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:20 INFO    opendrift:2213: 2026-08-22 14:20:00 - step 147 of 300 - 8958 active elements (1042 deactivated)
16:15:20 INFO    opendrift:2213: 2026-08-22 14:30:00 - step 148 of 300 - 8881 active elements (1119 deactivated)
16:15:20 INFO    opendrift:2213: 2026-08-22 14:40:00 - step 149 of 300 - 8784 active elements (1216 deactivated)
16:15:20 INFO    opendrift:2213: 2026-08-22 14:50:00 - step 150 of 300 - 8675 active elements (1325 deactivated)
16:15:20 INFO    opendrift:2213: 2026-08-22 15:00:00 - step 151 of 300 - 8562 active elements (1438 deactivated)
16:15:20 INFO    opendrift:2213: 2026-08-22 15:10:00 - step 152 of 300 - 8395 active elements (1605 deactivated)
16:15:21 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:21 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:21 INFO    opendrift:2213: 2026-08-22 15:20:00 - step 153 of 300 - 8217 active elements (1783 deactivated)
16:15:21 INFO    opendrift:2213: 2026-08-22 15:30:00 - step 154 of 300 - 8016 active elements (1984 deactivated)
16:15:21 INFO    opendrift:2213: 2026-08-22 15:40:00 - step 155 of 300 - 7780 active elements (2220 deactivated)
16:15:21 INFO    opendrift:2213: 2026-08-22 15:50:00 - step 156 of 300 - 7554 active elements (2446 deactivated)
16:15:21 INFO    opendrift:2213: 2026-08-22 16:00:00 - step 157 of 300 - 7313 active elements (2687 deactivated)
16:15:21 INFO    opendrift:2213: 2026-08-22 16:10:00 - step 158 of 300 - 7075 active elements (2925 deactivated)
16:15:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:22 INFO    opendrift:2213: 2026-08-22 16:20:00 - step 159 of 300 - 6788 active elements (3212 deactivated)
16:15:22 INFO    opendrift:2213: 2026-08-22 16:30:00 - step 160 of 300 - 6493 active elements (3507 deactivated)
16:15:22 INFO    opendrift:2213: 2026-08-22 16:40:00 - step 161 of 300 - 6194 active elements (3806 deactivated)
16:15:22 INFO    opendrift:2213: 2026-08-22 16:50:00 - step 162 of 300 - 5932 active elements (4068 deactivated)
16:15:22 INFO    opendrift:2213: 2026-08-22 17:00:00 - step 163 of 300 - 5633 active elements (4367 deactivated)
16:15:23 INFO    opendrift:2213: 2026-08-22 17:10:00 - step 164 of 300 - 5375 active elements (4625 deactivated)
16:15:23 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:23 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:23 INFO    opendrift:2213: 2026-08-22 17:20:00 - step 165 of 300 - 5107 active elements (4893 deactivated)
16:15:23 INFO    opendrift:2213: 2026-08-22 17:30:00 - step 166 of 300 - 4875 active elements (5125 deactivated)
16:15:23 INFO    opendrift:2213: 2026-08-22 17:40:00 - step 167 of 300 - 4653 active elements (5347 deactivated)
16:15:23 INFO    opendrift:2213: 2026-08-22 17:50:00 - step 168 of 300 - 4452 active elements (5548 deactivated)
16:15:23 INFO    opendrift:2213: 2026-08-22 18:00:00 - step 169 of 300 - 4264 active elements (5736 deactivated)
16:15:24 INFO    opendrift:2213: 2026-08-22 18:10:00 - step 170 of 300 - 4108 active elements (5892 deactivated)
16:15:24 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:24 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:24 INFO    opendrift:2213: 2026-08-22 18:20:00 - step 171 of 300 - 3949 active elements (6051 deactivated)
16:15:24 INFO    opendrift:2213: 2026-08-22 18:30:00 - step 172 of 300 - 3819 active elements (6181 deactivated)
16:15:24 INFO    opendrift:2213: 2026-08-22 18:40:00 - step 173 of 300 - 3716 active elements (6284 deactivated)
16:15:24 INFO    opendrift:2213: 2026-08-22 18:50:00 - step 174 of 300 - 3614 active elements (6386 deactivated)
16:15:24 INFO    opendrift:2213: 2026-08-22 19:00:00 - step 175 of 300 - 3540 active elements (6460 deactivated)
16:15:24 INFO    opendrift:2213: 2026-08-22 19:10:00 - step 176 of 300 - 3466 active elements (6534 deactivated)
16:15:26 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:26 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:26 INFO    opendrift:2213: 2026-08-22 19:20:00 - step 177 of 300 - 3415 active elements (6585 deactivated)
16:15:26 INFO    opendrift:2213: 2026-08-22 19:30:00 - step 178 of 300 - 3372 active elements (6628 deactivated)
16:15:26 INFO    opendrift:2213: 2026-08-22 19:40:00 - step 179 of 300 - 3339 active elements (6661 deactivated)
16:15:26 INFO    opendrift:2213: 2026-08-22 19:50:00 - step 180 of 300 - 3313 active elements (6687 deactivated)
16:15:26 INFO    opendrift:2213: 2026-08-22 20:00:00 - step 181 of 300 - 3283 active elements (6717 deactivated)
16:15:26 INFO    opendrift:2213: 2026-08-22 20:10:00 - step 182 of 300 - 3258 active elements (6742 deactivated)
16:15:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:27 INFO    opendrift:2213: 2026-08-22 20:20:00 - step 183 of 300 - 3228 active elements (6772 deactivated)
16:15:27 INFO    opendrift:2213: 2026-08-22 20:30:00 - step 184 of 300 - 3213 active elements (6787 deactivated)
16:15:27 INFO    opendrift:2213: 2026-08-22 20:40:00 - step 185 of 300 - 3198 active elements (6802 deactivated)
16:15:27 INFO    opendrift:2213: 2026-08-22 20:50:00 - step 186 of 300 - 3179 active elements (6821 deactivated)
16:15:27 INFO    opendrift:2213: 2026-08-22 21:00:00 - step 187 of 300 - 3155 active elements (6845 deactivated)
16:15:27 INFO    opendrift:2213: 2026-08-22 21:10:00 - step 188 of 300 - 3137 active elements (6863 deactivated)
16:15:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:28 INFO    opendrift:2213: 2026-08-22 21:20:00 - step 189 of 300 - 3115 active elements (6885 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 21:30:00 - step 190 of 300 - 3086 active elements (6914 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 21:40:00 - step 191 of 300 - 3064 active elements (6936 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 21:50:00 - step 192 of 300 - 3029 active elements (6971 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 22:00:00 - step 193 of 300 - 3000 active elements (7000 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 22:10:00 - step 194 of 300 - 2963 active elements (7037 deactivated)
16:15:28 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:28 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:28 INFO    opendrift:2213: 2026-08-22 22:20:00 - step 195 of 300 - 2928 active elements (7072 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 22:30:00 - step 196 of 300 - 2899 active elements (7101 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 22:40:00 - step 197 of 300 - 2854 active elements (7146 deactivated)
16:15:28 INFO    opendrift:2213: 2026-08-22 22:50:00 - step 198 of 300 - 2818 active elements (7182 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-22 23:00:00 - step 199 of 300 - 2775 active elements (7225 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-22 23:10:00 - step 200 of 300 - 2734 active elements (7266 deactivated)
16:15:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:29 INFO    opendrift:2213: 2026-08-22 23:20:00 - step 201 of 300 - 2717 active elements (7283 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-22 23:30:00 - step 202 of 300 - 2703 active elements (7297 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-22 23:40:00 - step 203 of 300 - 2682 active elements (7318 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-22 23:50:00 - step 204 of 300 - 2662 active elements (7338 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-23 00:00:00 - step 205 of 300 - 2650 active elements (7350 deactivated)
16:15:29 INFO    opendrift:2213: 2026-08-23 00:10:00 - step 206 of 300 - 2630 active elements (7370 deactivated)
16:15:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:30 INFO    opendrift:2213: 2026-08-23 00:20:00 - step 207 of 300 - 2614 active elements (7386 deactivated)
16:15:30 INFO    opendrift:2213: 2026-08-23 00:30:00 - step 208 of 300 - 2599 active elements (7401 deactivated)
16:15:30 INFO    opendrift:2213: 2026-08-23 00:40:00 - step 209 of 300 - 2584 active elements (7416 deactivated)
16:15:30 INFO    opendrift:2213: 2026-08-23 00:50:00 - step 210 of 300 - 2571 active elements (7429 deactivated)
16:15:30 INFO    opendrift:2213: 2026-08-23 01:00:00 - step 211 of 300 - 2559 active elements (7441 deactivated)
16:15:30 INFO    opendrift:2213: 2026-08-23 01:10:00 - step 212 of 300 - 2553 active elements (7447 deactivated)
16:15:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:31 INFO    opendrift:2213: 2026-08-23 01:20:00 - step 213 of 300 - 2546 active elements (7454 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 01:30:00 - step 214 of 300 - 2543 active elements (7457 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 01:40:00 - step 215 of 300 - 2540 active elements (7460 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 01:50:00 - step 216 of 300 - 2539 active elements (7461 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 02:00:00 - step 217 of 300 - 2535 active elements (7465 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 02:10:00 - step 218 of 300 - 2535 active elements (7465 deactivated)
16:15:31 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:31 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:31 INFO    opendrift:2213: 2026-08-23 02:20:00 - step 219 of 300 - 2535 active elements (7465 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 02:30:00 - step 220 of 300 - 2534 active elements (7466 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 02:40:00 - step 221 of 300 - 2533 active elements (7467 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 02:50:00 - step 222 of 300 - 2533 active elements (7467 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 03:00:00 - step 223 of 300 - 2533 active elements (7467 deactivated)
16:15:31 INFO    opendrift:2213: 2026-08-23 03:10:00 - step 224 of 300 - 2533 active elements (7467 deactivated)
16:15:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:32 INFO    opendrift:2213: 2026-08-23 03:20:00 - step 225 of 300 - 2533 active elements (7467 deactivated)
16:15:32 INFO    opendrift:2213: 2026-08-23 03:30:00 - step 226 of 300 - 2533 active elements (7467 deactivated)
16:15:32 INFO    opendrift:2213: 2026-08-23 03:40:00 - step 227 of 300 - 2533 active elements (7467 deactivated)
16:15:32 INFO    opendrift:2213: 2026-08-23 03:50:00 - step 228 of 300 - 2533 active elements (7467 deactivated)
16:15:32 INFO    opendrift:2213: 2026-08-23 04:00:00 - step 229 of 300 - 2532 active elements (7468 deactivated)
16:15:32 INFO    opendrift:2213: 2026-08-23 04:10:00 - step 230 of 300 - 2532 active elements (7468 deactivated)
16:15:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:32 INFO    opendrift:2213: 2026-08-23 04:20:00 - step 231 of 300 - 2528 active elements (7472 deactivated)
16:15:32 INFO    opendrift:2213: 2026-08-23 04:30:00 - step 232 of 300 - 2526 active elements (7474 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 04:40:00 - step 233 of 300 - 2523 active elements (7477 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 04:50:00 - step 234 of 300 - 2517 active elements (7483 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 05:00:00 - step 235 of 300 - 2514 active elements (7486 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 05:10:00 - step 236 of 300 - 2511 active elements (7489 deactivated)
16:15:33 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:33 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:33 INFO    opendrift:2213: 2026-08-23 05:20:00 - step 237 of 300 - 2509 active elements (7491 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 05:30:00 - step 238 of 300 - 2501 active elements (7499 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 05:40:00 - step 239 of 300 - 2491 active elements (7509 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 05:50:00 - step 240 of 300 - 2480 active elements (7520 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 06:00:00 - step 241 of 300 - 2469 active elements (7531 deactivated)
16:15:33 INFO    opendrift:2213: 2026-08-23 06:10:00 - step 242 of 300 - 2460 active elements (7540 deactivated)
16:15:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:34 INFO    opendrift:2213: 2026-08-23 06:20:00 - step 243 of 300 - 2446 active elements (7554 deactivated)
16:15:34 INFO    opendrift:2213: 2026-08-23 06:30:00 - step 244 of 300 - 2430 active elements (7570 deactivated)
16:15:34 INFO    opendrift:2213: 2026-08-23 06:40:00 - step 245 of 300 - 2406 active elements (7594 deactivated)
16:15:34 INFO    opendrift:2213: 2026-08-23 06:50:00 - step 246 of 300 - 2393 active elements (7607 deactivated)
16:15:34 INFO    opendrift:2213: 2026-08-23 07:00:00 - step 247 of 300 - 2365 active elements (7635 deactivated)
16:15:34 INFO    opendrift:2213: 2026-08-23 07:10:00 - step 248 of 300 - 2338 active elements (7662 deactivated)
16:15:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:34 INFO    opendrift:2213: 2026-08-23 07:20:00 - step 249 of 300 - 2313 active elements (7687 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 07:30:00 - step 250 of 300 - 2285 active elements (7715 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 07:40:00 - step 251 of 300 - 2257 active elements (7743 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 07:50:00 - step 252 of 300 - 2222 active elements (7778 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 08:00:00 - step 253 of 300 - 2183 active elements (7817 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 08:10:00 - step 254 of 300 - 2142 active elements (7858 deactivated)
16:15:35 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:35 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:35 INFO    opendrift:2213: 2026-08-23 08:20:00 - step 255 of 300 - 2102 active elements (7898 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 08:30:00 - step 256 of 300 - 2066 active elements (7934 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 08:40:00 - step 257 of 300 - 2000 active elements (8000 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 08:50:00 - step 258 of 300 - 1955 active elements (8045 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 09:00:00 - step 259 of 300 - 1903 active elements (8097 deactivated)
16:15:35 INFO    opendrift:2213: 2026-08-23 09:10:00 - step 260 of 300 - 1849 active elements (8151 deactivated)
16:15:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:36 INFO    opendrift:2213: 2026-08-23 09:20:00 - step 261 of 300 - 1796 active elements (8204 deactivated)
16:15:36 INFO    opendrift:2213: 2026-08-23 09:30:00 - step 262 of 300 - 1751 active elements (8249 deactivated)
16:15:36 INFO    opendrift:2213: 2026-08-23 09:40:00 - step 263 of 300 - 1683 active elements (8317 deactivated)
16:15:36 INFO    opendrift:2213: 2026-08-23 09:50:00 - step 264 of 300 - 1626 active elements (8374 deactivated)
16:15:36 INFO    opendrift:2213: 2026-08-23 10:00:00 - step 265 of 300 - 1561 active elements (8439 deactivated)
16:15:36 INFO    opendrift:2213: 2026-08-23 10:10:00 - step 266 of 300 - 1501 active elements (8499 deactivated)
16:15:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:38 INFO    opendrift:2213: 2026-08-23 10:20:00 - step 267 of 300 - 1438 active elements (8562 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 10:30:00 - step 268 of 300 - 1381 active elements (8619 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 10:40:00 - step 269 of 300 - 1325 active elements (8675 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 10:50:00 - step 270 of 300 - 1258 active elements (8742 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 11:00:00 - step 271 of 300 - 1197 active elements (8803 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 11:10:00 - step 272 of 300 - 1139 active elements (8861 deactivated)
16:15:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:38 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:38 INFO    opendrift:2213: 2026-08-23 11:20:00 - step 273 of 300 - 1087 active elements (8913 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 11:30:00 - step 274 of 300 - 1035 active elements (8965 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 11:40:00 - step 275 of 300 - 988 active elements (9012 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 11:50:00 - step 276 of 300 - 938 active elements (9062 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 12:00:00 - step 277 of 300 - 886 active elements (9114 deactivated)
16:15:38 INFO    opendrift:2213: 2026-08-23 12:10:00 - step 278 of 300 - 845 active elements (9155 deactivated)
16:15:39 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:39 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:39 INFO    opendrift:2213: 2026-08-23 12:20:00 - step 279 of 300 - 805 active elements (9195 deactivated)
16:15:39 INFO    opendrift:2213: 2026-08-23 12:30:00 - step 280 of 300 - 770 active elements (9230 deactivated)
16:15:39 INFO    opendrift:2213: 2026-08-23 12:40:00 - step 281 of 300 - 717 active elements (9283 deactivated)
16:15:39 INFO    opendrift:2213: 2026-08-23 12:50:00 - step 282 of 300 - 668 active elements (9332 deactivated)
16:15:39 INFO    opendrift:2213: 2026-08-23 13:00:00 - step 283 of 300 - 617 active elements (9383 deactivated)
16:15:39 INFO    opendrift:2213: 2026-08-23 13:10:00 - step 284 of 300 - 571 active elements (9429 deactivated)
16:15:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:40 INFO    opendrift:2213: 2026-08-23 13:20:00 - step 285 of 300 - 540 active elements (9460 deactivated)
16:15:40 INFO    opendrift:2213: 2026-08-23 13:30:00 - step 286 of 300 - 507 active elements (9493 deactivated)
16:15:40 INFO    opendrift:2213: 2026-08-23 13:40:00 - step 287 of 300 - 474 active elements (9526 deactivated)
16:15:40 INFO    opendrift:2213: 2026-08-23 13:50:00 - step 288 of 300 - 439 active elements (9561 deactivated)
16:15:40 INFO    opendrift:2213: 2026-08-23 14:00:00 - step 289 of 300 - 400 active elements (9600 deactivated)
16:15:40 INFO    opendrift:2213: 2026-08-23 14:10:00 - step 290 of 300 - 373 active elements (9627 deactivated)
16:15:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:41 INFO    opendrift:2213: 2026-08-23 14:20:00 - step 291 of 300 - 340 active elements (9660 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 14:30:00 - step 292 of 300 - 309 active elements (9691 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 14:40:00 - step 293 of 300 - 286 active elements (9714 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 14:50:00 - step 294 of 300 - 258 active elements (9742 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 15:00:00 - step 295 of 300 - 233 active elements (9767 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 15:10:00 - step 296 of 300 - 213 active elements (9787 deactivated)
16:15:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
16:15:41 INFO    opendrift:2213: 2026-08-23 15:20:00 - step 297 of 300 - 194 active elements (9806 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 15:30:00 - step 298 of 300 - 181 active elements (9819 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 15:40:00 - step 299 of 300 - 161 active elements (9839 deactivated)
16:15:41 INFO    opendrift:2213: 2026-08-23 15:50:00 - step 300 of 300 - 147 active elements (9853 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]
    2026-08-21T14:00:00 ... 2026-08-...

    standard_name :

    time

    long_name :

    time

    dtype :

    <class 'numpy.float64'>

    array(['2026-08-21T14:00:00.000000000', '2026-08-21T15:00:00.000000000',
           '2026-08-21T16:00:00.000000000', '2026-08-21T17:00:00.000000000',
           '2026-08-21T18:00:00.000000000', '2026-08-21T19:00:00.000000000',
           '2026-08-21T20:00:00.000000000', '2026-08-21T21:00:00.000000000',
           '2026-08-21T22:00:00.000000000', '2026-08-21T23:00:00.000000000',
           '2026-08-22T00:00:00.000000000', '2026-08-22T01:00:00.000000000',
           '2026-08-22T02:00:00.000000000', '2026-08-22T03:00:00.000000000',
           '2026-08-22T04:00:00.000000000', '2026-08-22T05:00:00.000000000',
           '2026-08-22T06:00:00.000000000', '2026-08-22T07:00:00.000000000',
           '2026-08-22T08:00:00.000000000', '2026-08-22T09:00:00.000000000',
           '2026-08-22T10:00:00.000000000', '2026-08-22T11:00:00.000000000',
           '2026-08-22T12:00:00.000000000', '2026-08-22T13:00:00.000000000',
           '2026-08-22T14:00:00.000000000', '2026-08-22T15:00:00.000000000',
           '2026-08-22T16:00:00.000000000', '2026-08-22T17:00:00.000000000',
           '2026-08-22T18:00:00.000000000', '2026-08-22T19:00:00.000000000',
           '2026-08-22T20:00:00.000000000', '2026-08-22T21:00:00.000000000',
           '2026-08-22T22:00:00.000000000', '2026-08-22T23:00:00.000000000',
           '2026-08-23T00:00:00.000000000', '2026-08-23T01:00:00.000000000',
           '2026-08-23T02:00:00.000000000', '2026-08-23T03:00:00.000000000',
           '2026-08-23T04:00:00.000000000', '2026-08-23T05:00:00.000000000',
           '2026-08-23T06:00:00.000000000', '2026-08-23T07:00:00.000000000',
           '2026-08-23T08:00:00.000000000', '2026-08-23T09:00:00.000000000',
           '2026-08-23T10:00:00.000000000', '2026-08-23T11:00:00.000000000',
           '2026-08-23T12:00:00.000000000', '2026-08-23T13:00:00.000000000',
           '2026-08-23T14:00:00.000000000', '2026-08-23T15:00:00.000000000',
           '2026-08-23T16:00:00.000000000'], 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 4.937 4.943 ... nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_east

    standard_name :

    longitude

    long_name :

    longitude

    axis :

    X

    minval :

    4.832955

    maxval :

    5.1546454

    array([[4.931612 , 4.93734  , 4.94335  , ...,       nan,       nan,
                  nan],
           [4.90717  , 4.9136353, 4.9209986, ...,       nan,       nan,
                  nan],
           [4.917548 , 4.924604 , 4.931305 , ...,       nan,       nan,
                  nan],
           ...,
           [4.9092627, 4.9146857, 4.9198465, ...,       nan,       nan,
                  nan],
           [4.8994102, 4.9059005, 4.911477 , ...,       nan,       nan,
                  nan],
           [4.9232616, 4.9293785, 4.9354825, ...,       nan,       nan,
                  nan]], shape=(10000, 51), dtype=float32)

  • lat
    (trajectory, time)
    float32
    60.0 59.99 59.99 ... nan nan nan

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_north

    standard_name :

    latitude

    long_name :

    latitude

    axis :

    Y

    minval :

    59.651962

    maxval :

    60.03229

    array([[59.99818 , 59.99216 , 59.98623 , ...,       nan,       nan,
                  nan],
           [59.99252 , 59.986633, 59.9811  , ...,       nan,       nan,
                  nan],
           [60.01556 , 60.009697, 60.004177, ...,       nan,       nan,
                  nan],
           ...,
           [59.999485, 59.993553, 59.98762 , ...,       nan,       nan,
                  nan],
           [59.990494, 59.983906, 59.977097, ...,       nan,       nan,
                  nan],
           [59.997066, 59.99124 , 59.985348, ...,       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
    4.365 4.543 4.824 ... nan nan nan

    minval :

    -0.7483462

    maxval :

    7.3557415

    array([[4.364747 , 4.543067 , 4.824142 , ...,       nan,       nan,
                  nan],
           [4.7737937, 5.3280516, 6.241619 , ...,       nan,       nan,
                  nan],
           [5.6988506, 5.1305275, 5.284004 , ...,       nan,       nan,
                  nan],
           ...,
           [4.190791 , 4.215101 , 3.6904166, ...,       nan,       nan,
                  nan],
           [5.483915 , 4.396947 , 4.213176 , ...,       nan,       nan,
                  nan],
           [4.8053603, 4.652147 , 4.8511453, ...,       nan,       nan,
                  nan]], shape=(10000, 51), dtype=float32)

  • y_wind
    (trajectory, time)
    float32
    -9.378 -9.219 -9.125 ... nan nan

    minval :

    -13.969952

    maxval :

    -3.5251038

    array([[ -9.377817 ,  -9.219468 ,  -9.1250725, ...,         nan,
                    nan,         nan],
           [ -9.519362 ,  -8.517584 ,  -8.620853 , ...,         nan,
                    nan,         nan],
           [ -9.438213 ,  -8.538946 ,  -8.522537 , ...,         nan,
                    nan,         nan],
           ...,
           [ -9.425715 ,  -8.828864 ,  -9.652629 , ...,         nan,
                    nan,         nan],
           [ -9.866917 , -10.705515 , -10.284068 , ...,         nan,
                    nan,         nan],
           [ -8.942866 ,  -9.111199 ,  -9.133596 , ...,         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
    2.632 2.599 2.621 ... nan nan nan

    minval :

    0.5295382

    maxval :

    5.371406

    array([[2.6320639, 2.5986958, 2.6208663, ...,       nan,       nan,
                  nan],
           [2.7898214, 2.483059 , 2.7866125, ...,       nan,       nan,
                  nan],
           [2.9902966, 2.4412034, 2.4736366, ...,       nan,       nan,
                  nan],
           ...,
           [2.6176078, 2.3546114, 2.6270933, ...,       nan,       nan,
                  nan],
           [3.1347623, 3.2949533, 3.0384176, ...,       nan,       nan,
                  nan],
           [2.535432 , 2.574548 , 2.6311224, ...,       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)

• 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 2026-08-21 16:14:45.407010

  date_created :

  2026-08-21T16:14:45.407026

  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 :

  2026-08-21 14:00:00

  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 :

  1.14.10

  seed_geojson :

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

  simulation_time :

  2026-08-21 16:14:45.418109

  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 :

  2026-08-23 16:00:00

  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 0:00:44.6 total 0:00:00.0 preparing 0:00:42.3 reading 0:00:15.9 interpolation 0:00:00.0 interpolation_time 0:00:02.2 rotating vectors 0:00:00.0 masking -------------------- global_landmask 0:00:00.6 total 0:00:00.0 preparing 0:00:00.6 reading 0:00:00.0 masking -------------------- Performance: 1:04.5 total time 8.0 configuration 0.0 preparing main loop 0.0 moving elements to ocean 56.4 main loop 2.1 updating elements 0.0 cleaning up --------------------

  geospatial_bounds_crs :

  EPSG:4326

  geospatial_bounds_vertical_crs :

  EPSG:5831

  geospatial_lat_min :

  59.651962

  geospatial_lat_max :

  60.03229

  geospatial_lat_units :

  degrees_north

  geospatial_lat_resolution :

  point

  geospatial_lon_min :

  4.832955

  geospatial_lon_max :

  5.1546454

  geospatial_lon_units :

  degrees_east

  geospatial_lon_resolution :

  point

  runtime :

  0:01:04.558548

  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)

16:15:41 WARNING opendrift:2589: Plotting fast. This will make your plots less accurate.
16:15:43 INFO    opendrift:4799: Saving animation to /root/project/docs/source/gallery/animations/example_ensemble_0.gif...
16:16:15 INFO    opendrift:3217: Time to make animation: 0:00:33.305962

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

o.plot_memory_usage()