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)

13:22:55 INFO    opendrift:569: OpenDriftSimulation initialised (version 1.14.10 / v1.14.10-27-gff3ada1)
13:22:55 INFO    opendrift.readers:67: Opening file with xr.open_dataset
13:22:56 INFO    opendrift.readers.reader_netCDF_CF_generic:340: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
13:22:56 INFO    opendrift.models.basemodel.environment:203: Adding a global landmask from GSHHG
13:23:01 INFO    opendrift.models.basemodel.environment:227: Fallback values will be used for the following variables which have no readers:
13:23:01 INFO    opendrift.models.basemodel.environment:230:    x_sea_water_velocity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    y_sea_water_velocity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    sea_surface_height: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    upward_sea_water_velocity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    ocean_vertical_diffusivity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    horizontal_diffusivity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_significant_height: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    ocean_mixed_layer_thickness: 50.000000
13:23:01 INFO    opendrift.models.basemodel.environment:230:    sea_floor_depth_below_sea_level: 10000.000000
13:23:01 INFO    opendrift:1903: Skipping environment variable ocean_vertical_diffusivity because of condition ['drift:vertical_mixing', 'is', False]
13:23:01 INFO    opendrift:1903: Skipping environment variable ocean_mixed_layer_thickness because of condition ['drift:vertical_mixing', 'is', False]
13:23:01 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']))
13:23:01 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']))
13:23:01 INFO    opendrift:1922: Storing previous values of environment variable sea_surface_height because of condition ['drift:vertical_advection', 'is', True]
13:23:01 INFO    opendrift:955: Using existing reader for land_binary_mask to move elements to ocean
13:23:01 INFO    opendrift:986: All points are in ocean
13:23:01 INFO    opendrift:2211: 2026-07-14 11:00:00 - step 1 of 300 - 10000 active elements (0 deactivated)
13:23:02 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:02 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:02 INFO    opendrift:2211: 2026-07-14 11:10:00 - step 2 of 300 - 10000 active elements (0 deactivated)
13:23:02 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:02 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:02 INFO    opendrift:2211: 2026-07-14 11:20:00 - step 3 of 300 - 10000 active elements (0 deactivated)
13:23:03 INFO    opendrift:2211: 2026-07-14 11:30:00 - step 4 of 300 - 10000 active elements (0 deactivated)
13:23:03 INFO    opendrift:2211: 2026-07-14 11:40:00 - step 5 of 300 - 10000 active elements (0 deactivated)
13:23:03 INFO    opendrift:2211: 2026-07-14 11:50:00 - step 6 of 300 - 10000 active elements (0 deactivated)
13:23:03 INFO    opendrift:2211: 2026-07-14 12:00:00 - step 7 of 300 - 10000 active elements (0 deactivated)
13:23:03 INFO    opendrift:2211: 2026-07-14 12:10:00 - step 8 of 300 - 10000 active elements (0 deactivated)
13:23:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:04 INFO    opendrift:2211: 2026-07-14 12:20:00 - step 9 of 300 - 10000 active elements (0 deactivated)
13:23:04 INFO    opendrift:2211: 2026-07-14 12:30:00 - step 10 of 300 - 10000 active elements (0 deactivated)
13:23:04 INFO    opendrift:2211: 2026-07-14 12:40:00 - step 11 of 300 - 10000 active elements (0 deactivated)
13:23:04 INFO    opendrift:2211: 2026-07-14 12:50:00 - step 12 of 300 - 10000 active elements (0 deactivated)
13:23:04 INFO    opendrift:2211: 2026-07-14 13:00:00 - step 13 of 300 - 10000 active elements (0 deactivated)
13:23:04 INFO    opendrift:2211: 2026-07-14 13:10:00 - step 14 of 300 - 10000 active elements (0 deactivated)
13:23:05 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:05 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:05 INFO    opendrift:2211: 2026-07-14 13:20:00 - step 15 of 300 - 10000 active elements (0 deactivated)
13:23:05 INFO    opendrift:2211: 2026-07-14 13:30:00 - step 16 of 300 - 10000 active elements (0 deactivated)
13:23:05 INFO    opendrift:2211: 2026-07-14 13:40:00 - step 17 of 300 - 10000 active elements (0 deactivated)
13:23:05 INFO    opendrift:2211: 2026-07-14 13:50:00 - step 18 of 300 - 10000 active elements (0 deactivated)
13:23:06 INFO    opendrift:2211: 2026-07-14 14:00:00 - step 19 of 300 - 10000 active elements (0 deactivated)
13:23:06 INFO    opendrift:2211: 2026-07-14 14:10:00 - step 20 of 300 - 10000 active elements (0 deactivated)
13:23:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:06 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:06 INFO    opendrift:2211: 2026-07-14 14:20:00 - step 21 of 300 - 10000 active elements (0 deactivated)
13:23:06 INFO    opendrift:2211: 2026-07-14 14:30:00 - step 22 of 300 - 10000 active elements (0 deactivated)
13:23:07 INFO    opendrift:2211: 2026-07-14 14:40:00 - step 23 of 300 - 10000 active elements (0 deactivated)
13:23:07 INFO    opendrift:2211: 2026-07-14 14:50:00 - step 24 of 300 - 10000 active elements (0 deactivated)
13:23:07 INFO    opendrift:2211: 2026-07-14 15:00:00 - step 25 of 300 - 10000 active elements (0 deactivated)
13:23:07 INFO    opendrift:2211: 2026-07-14 15:10:00 - step 26 of 300 - 10000 active elements (0 deactivated)
13:23:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:08 INFO    opendrift:2211: 2026-07-14 15:20:00 - step 27 of 300 - 10000 active elements (0 deactivated)
13:23:08 INFO    opendrift:2211: 2026-07-14 15:30:00 - step 28 of 300 - 10000 active elements (0 deactivated)
13:23:08 INFO    opendrift:2211: 2026-07-14 15:40:00 - step 29 of 300 - 10000 active elements (0 deactivated)
13:23:08 INFO    opendrift:2211: 2026-07-14 15:50:00 - step 30 of 300 - 10000 active elements (0 deactivated)
13:23:08 INFO    opendrift:2211: 2026-07-14 16:00:00 - step 31 of 300 - 10000 active elements (0 deactivated)
13:23:08 INFO    opendrift:2211: 2026-07-14 16:10:00 - step 32 of 300 - 10000 active elements (0 deactivated)
13:23:09 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:09 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:09 INFO    opendrift:2211: 2026-07-14 16:20:00 - step 33 of 300 - 10000 active elements (0 deactivated)
13:23:09 INFO    opendrift:2211: 2026-07-14 16:30:00 - step 34 of 300 - 10000 active elements (0 deactivated)
13:23:09 INFO    opendrift:2211: 2026-07-14 16:40:00 - step 35 of 300 - 10000 active elements (0 deactivated)
13:23:09 INFO    opendrift:2211: 2026-07-14 16:50:00 - step 36 of 300 - 10000 active elements (0 deactivated)
13:23:10 INFO    opendrift:2211: 2026-07-14 17:00:00 - step 37 of 300 - 10000 active elements (0 deactivated)
13:23:10 INFO    opendrift:2211: 2026-07-14 17:10:00 - step 38 of 300 - 10000 active elements (0 deactivated)
13:23:10 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:10 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:10 INFO    opendrift:2211: 2026-07-14 17:20:00 - step 39 of 300 - 10000 active elements (0 deactivated)
13:23:10 INFO    opendrift:2211: 2026-07-14 17:30:00 - step 40 of 300 - 10000 active elements (0 deactivated)
13:23:11 INFO    opendrift:2211: 2026-07-14 17:40:00 - step 41 of 300 - 10000 active elements (0 deactivated)
13:23:11 INFO    opendrift:2211: 2026-07-14 17:50:00 - step 42 of 300 - 10000 active elements (0 deactivated)
13:23:11 INFO    opendrift:2211: 2026-07-14 18:00:00 - step 43 of 300 - 10000 active elements (0 deactivated)
13:23:11 INFO    opendrift:2211: 2026-07-14 18:10:00 - step 44 of 300 - 10000 active elements (0 deactivated)
13:23:11 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:11 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:12 INFO    opendrift:2211: 2026-07-14 18:20:00 - step 45 of 300 - 10000 active elements (0 deactivated)
13:23:12 INFO    opendrift:2211: 2026-07-14 18:30:00 - step 46 of 300 - 10000 active elements (0 deactivated)
13:23:12 INFO    opendrift:2211: 2026-07-14 18:40:00 - step 47 of 300 - 10000 active elements (0 deactivated)
13:23:12 INFO    opendrift:2211: 2026-07-14 18:50:00 - step 48 of 300 - 10000 active elements (0 deactivated)
13:23:12 INFO    opendrift:2211: 2026-07-14 19:00:00 - step 49 of 300 - 10000 active elements (0 deactivated)
13:23:12 INFO    opendrift:2211: 2026-07-14 19:10:00 - step 50 of 300 - 10000 active elements (0 deactivated)
13:23:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:13 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:13 INFO    opendrift:2211: 2026-07-14 19:20:00 - step 51 of 300 - 10000 active elements (0 deactivated)
13:23:13 INFO    opendrift:2211: 2026-07-14 19:30:00 - step 52 of 300 - 10000 active elements (0 deactivated)
13:23:13 INFO    opendrift:2211: 2026-07-14 19:40:00 - step 53 of 300 - 10000 active elements (0 deactivated)
13:23:13 INFO    opendrift:2211: 2026-07-14 19:50:00 - step 54 of 300 - 10000 active elements (0 deactivated)
13:23:13 INFO    opendrift:2211: 2026-07-14 20:00:00 - step 55 of 300 - 10000 active elements (0 deactivated)
13:23:14 INFO    opendrift:2211: 2026-07-14 20:10:00 - step 56 of 300 - 10000 active elements (0 deactivated)
13:23:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:14 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:14 INFO    opendrift:2211: 2026-07-14 20:20:00 - step 57 of 300 - 10000 active elements (0 deactivated)
13:23:14 INFO    opendrift:2211: 2026-07-14 20:30:00 - step 58 of 300 - 10000 active elements (0 deactivated)
13:23:15 INFO    opendrift:2211: 2026-07-14 20:40:00 - step 59 of 300 - 10000 active elements (0 deactivated)
13:23:15 INFO    opendrift:2211: 2026-07-14 20:50:00 - step 60 of 300 - 10000 active elements (0 deactivated)
13:23:15 INFO    opendrift:2211: 2026-07-14 21:00:00 - step 61 of 300 - 10000 active elements (0 deactivated)
13:23:15 INFO    opendrift:2211: 2026-07-14 21:10:00 - step 62 of 300 - 10000 active elements (0 deactivated)
13:23:15 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:15 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:16 INFO    opendrift:2211: 2026-07-14 21:20:00 - step 63 of 300 - 10000 active elements (0 deactivated)
13:23:16 INFO    opendrift:2211: 2026-07-14 21:30:00 - step 64 of 300 - 10000 active elements (0 deactivated)
13:23:16 INFO    opendrift:2211: 2026-07-14 21:40:00 - step 65 of 300 - 10000 active elements (0 deactivated)
13:23:16 INFO    opendrift:2211: 2026-07-14 21:50:00 - step 66 of 300 - 10000 active elements (0 deactivated)
13:23:16 INFO    opendrift:2211: 2026-07-14 22:00:00 - step 67 of 300 - 10000 active elements (0 deactivated)
13:23:16 INFO    opendrift:2211: 2026-07-14 22:10:00 - step 68 of 300 - 10000 active elements (0 deactivated)
13:23:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:17 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:17 INFO    opendrift:2211: 2026-07-14 22:20:00 - step 69 of 300 - 10000 active elements (0 deactivated)
13:23:17 INFO    opendrift:2211: 2026-07-14 22:30:00 - step 70 of 300 - 10000 active elements (0 deactivated)
13:23:17 INFO    opendrift:2211: 2026-07-14 22:40:00 - step 71 of 300 - 10000 active elements (0 deactivated)
13:23:17 INFO    opendrift:2211: 2026-07-14 22:50:00 - step 72 of 300 - 10000 active elements (0 deactivated)
13:23:17 INFO    opendrift:2211: 2026-07-14 23:00:00 - step 73 of 300 - 10000 active elements (0 deactivated)
13:23:18 INFO    opendrift:2211: 2026-07-14 23:10:00 - step 74 of 300 - 10000 active elements (0 deactivated)
13:23:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:18 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:18 INFO    opendrift:2211: 2026-07-14 23:20:00 - step 75 of 300 - 10000 active elements (0 deactivated)
13:23:18 INFO    opendrift:2211: 2026-07-14 23:30:00 - step 76 of 300 - 10000 active elements (0 deactivated)
13:23:18 INFO    opendrift:2211: 2026-07-14 23:40:00 - step 77 of 300 - 10000 active elements (0 deactivated)
13:23:19 INFO    opendrift:2211: 2026-07-14 23:50:00 - step 78 of 300 - 10000 active elements (0 deactivated)
13:23:19 INFO    opendrift:2211: 2026-07-15 00:00:00 - step 79 of 300 - 10000 active elements (0 deactivated)
13:23:19 INFO    opendrift:2211: 2026-07-15 00:10:00 - step 80 of 300 - 10000 active elements (0 deactivated)
13:23:19 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:19 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:19 INFO    opendrift:2211: 2026-07-15 00:20:00 - step 81 of 300 - 10000 active elements (0 deactivated)
13:23:20 INFO    opendrift:2211: 2026-07-15 00:30:00 - step 82 of 300 - 10000 active elements (0 deactivated)
13:23:20 INFO    opendrift:2211: 2026-07-15 00:40:00 - step 83 of 300 - 10000 active elements (0 deactivated)
13:23:20 INFO    opendrift:2211: 2026-07-15 00:50:00 - step 84 of 300 - 10000 active elements (0 deactivated)
13:23:20 INFO    opendrift:2211: 2026-07-15 01:00:00 - step 85 of 300 - 10000 active elements (0 deactivated)
13:23:20 INFO    opendrift:2211: 2026-07-15 01:10:00 - step 86 of 300 - 10000 active elements (0 deactivated)
13:23:21 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:21 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:21 INFO    opendrift:2211: 2026-07-15 01:20:00 - step 87 of 300 - 10000 active elements (0 deactivated)
13:23:21 INFO    opendrift:2211: 2026-07-15 01:30:00 - step 88 of 300 - 10000 active elements (0 deactivated)
13:23:21 INFO    opendrift:2211: 2026-07-15 01:40:00 - step 89 of 300 - 10000 active elements (0 deactivated)
13:23:21 INFO    opendrift:2211: 2026-07-15 01:50:00 - step 90 of 300 - 10000 active elements (0 deactivated)
13:23:21 INFO    opendrift:2211: 2026-07-15 02:00:00 - step 91 of 300 - 10000 active elements (0 deactivated)
13:23:21 INFO    opendrift:2211: 2026-07-15 02:10:00 - step 92 of 300 - 10000 active elements (0 deactivated)
13:23:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:22 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:22 INFO    opendrift:2211: 2026-07-15 02:20:00 - step 93 of 300 - 10000 active elements (0 deactivated)
13:23:22 INFO    opendrift:2211: 2026-07-15 02:30:00 - step 94 of 300 - 10000 active elements (0 deactivated)
13:23:22 INFO    opendrift:2211: 2026-07-15 02:40:00 - step 95 of 300 - 10000 active elements (0 deactivated)
13:23:22 INFO    opendrift:2211: 2026-07-15 02:50:00 - step 96 of 300 - 10000 active elements (0 deactivated)
13:23:23 INFO    opendrift:2211: 2026-07-15 03:00:00 - step 97 of 300 - 10000 active elements (0 deactivated)
13:23:23 INFO    opendrift:2211: 2026-07-15 03:10:00 - step 98 of 300 - 10000 active elements (0 deactivated)
13:23:23 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:23 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:23 INFO    opendrift:2211: 2026-07-15 03:20:00 - step 99 of 300 - 10000 active elements (0 deactivated)
13:23:23 INFO    opendrift:2211: 2026-07-15 03:30:00 - step 100 of 300 - 10000 active elements (0 deactivated)
13:23:24 INFO    opendrift:2211: 2026-07-15 03:40:00 - step 101 of 300 - 10000 active elements (0 deactivated)
13:23:24 INFO    opendrift:2211: 2026-07-15 03:50:00 - step 102 of 300 - 10000 active elements (0 deactivated)
13:23:24 INFO    opendrift:2211: 2026-07-15 04:00:00 - step 103 of 300 - 10000 active elements (0 deactivated)
13:23:24 INFO    opendrift:2211: 2026-07-15 04:10:00 - step 104 of 300 - 10000 active elements (0 deactivated)
13:23:24 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:24 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:24 INFO    opendrift:2211: 2026-07-15 04:20:00 - step 105 of 300 - 10000 active elements (0 deactivated)
13:23:25 INFO    opendrift:2211: 2026-07-15 04:30:00 - step 106 of 300 - 10000 active elements (0 deactivated)
13:23:25 INFO    opendrift:2211: 2026-07-15 04:40:00 - step 107 of 300 - 10000 active elements (0 deactivated)
13:23:25 INFO    opendrift:2211: 2026-07-15 04:50:00 - step 108 of 300 - 10000 active elements (0 deactivated)
13:23:25 INFO    opendrift:2211: 2026-07-15 05:00:00 - step 109 of 300 - 10000 active elements (0 deactivated)
13:23:25 INFO    opendrift:2211: 2026-07-15 05:10:00 - step 110 of 300 - 10000 active elements (0 deactivated)
13:23:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:25 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:26 INFO    opendrift:2211: 2026-07-15 05:20:00 - step 111 of 300 - 10000 active elements (0 deactivated)
13:23:26 INFO    opendrift:2211: 2026-07-15 05:30:00 - step 112 of 300 - 10000 active elements (0 deactivated)
13:23:26 INFO    opendrift:2211: 2026-07-15 05:40:00 - step 113 of 300 - 10000 active elements (0 deactivated)
13:23:26 INFO    opendrift:2211: 2026-07-15 05:50:00 - step 114 of 300 - 10000 active elements (0 deactivated)
13:23:26 INFO    opendrift:2211: 2026-07-15 06:00:00 - step 115 of 300 - 10000 active elements (0 deactivated)
13:23:26 INFO    opendrift:2211: 2026-07-15 06:10:00 - step 116 of 300 - 10000 active elements (0 deactivated)
13:23:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:27 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:27 INFO    opendrift:2211: 2026-07-15 06:20:00 - step 117 of 300 - 10000 active elements (0 deactivated)
13:23:27 INFO    opendrift:2211: 2026-07-15 06:30:00 - step 118 of 300 - 10000 active elements (0 deactivated)
13:23:27 INFO    opendrift:2211: 2026-07-15 06:40:00 - step 119 of 300 - 10000 active elements (0 deactivated)
13:23:27 INFO    opendrift:2211: 2026-07-15 06:50:00 - step 120 of 300 - 10000 active elements (0 deactivated)
13:23:27 INFO    opendrift:2211: 2026-07-15 07:00:00 - step 121 of 300 - 10000 active elements (0 deactivated)
13:23:27 INFO    opendrift:2211: 2026-07-15 07:10:00 - step 122 of 300 - 10000 active elements (0 deactivated)
13:23:28 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:28 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:28 INFO    opendrift:2211: 2026-07-15 07:20:00 - step 123 of 300 - 10000 active elements (0 deactivated)
13:23:28 INFO    opendrift:2211: 2026-07-15 07:30:00 - step 124 of 300 - 10000 active elements (0 deactivated)
13:23:28 INFO    opendrift:2211: 2026-07-15 07:40:00 - step 125 of 300 - 10000 active elements (0 deactivated)
13:23:28 INFO    opendrift:2211: 2026-07-15 07:50:00 - step 126 of 300 - 10000 active elements (0 deactivated)
13:23:28 INFO    opendrift:2211: 2026-07-15 08:00:00 - step 127 of 300 - 10000 active elements (0 deactivated)
13:23:29 INFO    opendrift:2211: 2026-07-15 08:10:00 - step 128 of 300 - 10000 active elements (0 deactivated)
13:23:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:29 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:29 INFO    opendrift:2211: 2026-07-15 08:20:00 - step 129 of 300 - 10000 active elements (0 deactivated)
13:23:29 INFO    opendrift:2211: 2026-07-15 08:30:00 - step 130 of 300 - 10000 active elements (0 deactivated)
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13:23:30 INFO    opendrift:2211: 2026-07-15 08:50:00 - step 132 of 300 - 10000 active elements (0 deactivated)
13:23:30 INFO    opendrift:2211: 2026-07-15 09:00:00 - step 133 of 300 - 10000 active elements (0 deactivated)
13:23:30 INFO    opendrift:2211: 2026-07-15 09:10:00 - step 134 of 300 - 10000 active elements (0 deactivated)
13:23:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:30 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:30 INFO    opendrift:2211: 2026-07-15 09:20:00 - step 135 of 300 - 10000 active elements (0 deactivated)
13:23:31 INFO    opendrift:2211: 2026-07-15 09:30:00 - step 136 of 300 - 10000 active elements (0 deactivated)
13:23:31 INFO    opendrift:2211: 2026-07-15 09:40:00 - step 137 of 300 - 10000 active elements (0 deactivated)
13:23:31 INFO    opendrift:2211: 2026-07-15 09:50:00 - step 138 of 300 - 10000 active elements (0 deactivated)
13:23:31 INFO    opendrift:2211: 2026-07-15 10:00:00 - step 139 of 300 - 10000 active elements (0 deactivated)
13:23:31 INFO    opendrift:2211: 2026-07-15 10:10:00 - step 140 of 300 - 10000 active elements (0 deactivated)
13:23:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:32 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:32 INFO    opendrift:2211: 2026-07-15 10:20:00 - step 141 of 300 - 10000 active elements (0 deactivated)
13:23:32 INFO    opendrift:2211: 2026-07-15 10:30:00 - step 142 of 300 - 10000 active elements (0 deactivated)
13:23:32 INFO    opendrift:2211: 2026-07-15 10:40:00 - step 143 of 300 - 10000 active elements (0 deactivated)
13:23:32 INFO    opendrift:2211: 2026-07-15 10:50:00 - step 144 of 300 - 10000 active elements (0 deactivated)
13:23:34 INFO    opendrift:2211: 2026-07-15 11:00:00 - step 145 of 300 - 10000 active elements (0 deactivated)
13:23:34 INFO    opendrift:2211: 2026-07-15 11:10:00 - step 146 of 300 - 10000 active elements (0 deactivated)
13:23:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:34 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:35 INFO    opendrift:2211: 2026-07-15 11:20:00 - step 147 of 300 - 10000 active elements (0 deactivated)
13:23:35 INFO    opendrift:2211: 2026-07-15 11:30:00 - step 148 of 300 - 10000 active elements (0 deactivated)
13:23:35 INFO    opendrift:2211: 2026-07-15 11:40:00 - step 149 of 300 - 10000 active elements (0 deactivated)
13:23:35 INFO    opendrift:2211: 2026-07-15 11:50:00 - step 150 of 300 - 10000 active elements (0 deactivated)
13:23:35 INFO    opendrift:2211: 2026-07-15 12:00:00 - step 151 of 300 - 10000 active elements (0 deactivated)
13:23:35 INFO    opendrift:2211: 2026-07-15 12:10:00 - step 152 of 300 - 10000 active elements (0 deactivated)
13:23:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:36 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:36 INFO    opendrift:2211: 2026-07-15 12:20:00 - step 153 of 300 - 10000 active elements (0 deactivated)
13:23:36 INFO    opendrift:2211: 2026-07-15 12:30:00 - step 154 of 300 - 10000 active elements (0 deactivated)
13:23:36 INFO    opendrift:2211: 2026-07-15 12:40:00 - step 155 of 300 - 10000 active elements (0 deactivated)
13:23:36 INFO    opendrift:2211: 2026-07-15 12:50:00 - step 156 of 300 - 10000 active elements (0 deactivated)
13:23:36 INFO    opendrift:2211: 2026-07-15 13:00:00 - step 157 of 300 - 10000 active elements (0 deactivated)
13:23:36 INFO    opendrift:2211: 2026-07-15 13:10:00 - step 158 of 300 - 10000 active elements (0 deactivated)
13:23:37 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:37 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:37 INFO    opendrift:2211: 2026-07-15 13:20:00 - step 159 of 300 - 10000 active elements (0 deactivated)
13:23:39 INFO    opendrift:2211: 2026-07-15 13:30:00 - step 160 of 300 - 9999 active elements (1 deactivated)
13:23:39 INFO    opendrift:2211: 2026-07-15 13:40:00 - step 161 of 300 - 9999 active elements (1 deactivated)
13:23:39 INFO    opendrift:2211: 2026-07-15 13:50:00 - step 162 of 300 - 9999 active elements (1 deactivated)
13:23:39 INFO    opendrift:2211: 2026-07-15 14:00:00 - step 163 of 300 - 9998 active elements (2 deactivated)
13:23:39 INFO    opendrift:2211: 2026-07-15 14:10:00 - step 164 of 300 - 9996 active elements (4 deactivated)
13:23:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:40 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:40 INFO    opendrift:2211: 2026-07-15 14:20:00 - step 165 of 300 - 9995 active elements (5 deactivated)
13:23:40 INFO    opendrift:2211: 2026-07-15 14:30:00 - step 166 of 300 - 9995 active elements (5 deactivated)
13:23:40 INFO    opendrift:2211: 2026-07-15 14:40:00 - step 167 of 300 - 9995 active elements (5 deactivated)
13:23:40 INFO    opendrift:2211: 2026-07-15 14:50:00 - step 168 of 300 - 9993 active elements (7 deactivated)
13:23:40 INFO    opendrift:2211: 2026-07-15 15:00:00 - step 169 of 300 - 9992 active elements (8 deactivated)
13:23:40 INFO    opendrift:2211: 2026-07-15 15:10:00 - step 170 of 300 - 9990 active elements (10 deactivated)
13:23:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:41 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:41 INFO    opendrift:2211: 2026-07-15 15:20:00 - step 171 of 300 - 9990 active elements (10 deactivated)
13:23:41 INFO    opendrift:2211: 2026-07-15 15:30:00 - step 172 of 300 - 9990 active elements (10 deactivated)
13:23:41 INFO    opendrift:2211: 2026-07-15 15:40:00 - step 173 of 300 - 9989 active elements (11 deactivated)
13:23:41 INFO    opendrift:2211: 2026-07-15 15:50:00 - step 174 of 300 - 9989 active elements (11 deactivated)
13:23:41 INFO    opendrift:2211: 2026-07-15 16:00:00 - step 175 of 300 - 9987 active elements (13 deactivated)
13:23:42 INFO    opendrift:2211: 2026-07-15 16:10:00 - step 176 of 300 - 9986 active elements (14 deactivated)
13:23:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:42 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:42 INFO    opendrift:2211: 2026-07-15 16:20:00 - step 177 of 300 - 9985 active elements (15 deactivated)
13:23:42 INFO    opendrift:2211: 2026-07-15 16:30:00 - step 178 of 300 - 9984 active elements (16 deactivated)
13:23:42 INFO    opendrift:2211: 2026-07-15 16:40:00 - step 179 of 300 - 9984 active elements (16 deactivated)
13:23:43 INFO    opendrift:2211: 2026-07-15 16:50:00 - step 180 of 300 - 9982 active elements (18 deactivated)
13:23:43 INFO    opendrift:2211: 2026-07-15 17:00:00 - step 181 of 300 - 9981 active elements (19 deactivated)
13:23:43 INFO    opendrift:2211: 2026-07-15 17:10:00 - step 182 of 300 - 9979 active elements (21 deactivated)
13:23:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:43 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:43 INFO    opendrift:2211: 2026-07-15 17:20:00 - step 183 of 300 - 9975 active elements (25 deactivated)
13:23:44 INFO    opendrift:2211: 2026-07-15 17:30:00 - step 184 of 300 - 9974 active elements (26 deactivated)
13:23:44 INFO    opendrift:2211: 2026-07-15 17:40:00 - step 185 of 300 - 9973 active elements (27 deactivated)
13:23:44 INFO    opendrift:2211: 2026-07-15 17:50:00 - step 186 of 300 - 9969 active elements (31 deactivated)
13:23:44 INFO    opendrift:2211: 2026-07-15 18:00:00 - step 187 of 300 - 9964 active elements (36 deactivated)
13:23:44 INFO    opendrift:2211: 2026-07-15 18:10:00 - step 188 of 300 - 9962 active elements (38 deactivated)
13:23:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:45 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:45 INFO    opendrift:2211: 2026-07-15 18:20:00 - step 189 of 300 - 9958 active elements (42 deactivated)
13:23:45 INFO    opendrift:2211: 2026-07-15 18:30:00 - step 190 of 300 - 9957 active elements (43 deactivated)
13:23:45 INFO    opendrift:2211: 2026-07-15 18:40:00 - step 191 of 300 - 9955 active elements (45 deactivated)
13:23:45 INFO    opendrift:2211: 2026-07-15 18:50:00 - step 192 of 300 - 9953 active elements (47 deactivated)
13:23:45 INFO    opendrift:2211: 2026-07-15 19:00:00 - step 193 of 300 - 9949 active elements (51 deactivated)
13:23:45 INFO    opendrift:2211: 2026-07-15 19:10:00 - step 194 of 300 - 9949 active elements (51 deactivated)
13:23:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:46 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:46 INFO    opendrift:2211: 2026-07-15 19:20:00 - step 195 of 300 - 9947 active elements (53 deactivated)
13:23:46 INFO    opendrift:2211: 2026-07-15 19:30:00 - step 196 of 300 - 9946 active elements (54 deactivated)
13:23:46 INFO    opendrift:2211: 2026-07-15 19:40:00 - step 197 of 300 - 9945 active elements (55 deactivated)
13:23:47 INFO    opendrift:2211: 2026-07-15 19:50:00 - step 198 of 300 - 9943 active elements (57 deactivated)
13:23:47 INFO    opendrift:2211: 2026-07-15 20:00:00 - step 199 of 300 - 9940 active elements (60 deactivated)
13:23:47 INFO    opendrift:2211: 2026-07-15 20:10:00 - step 200 of 300 - 9938 active elements (62 deactivated)
13:23:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:47 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:47 INFO    opendrift:2211: 2026-07-15 20:20:00 - step 201 of 300 - 9936 active elements (64 deactivated)
13:23:47 INFO    opendrift:2211: 2026-07-15 20:30:00 - step 202 of 300 - 9935 active elements (65 deactivated)
13:23:48 INFO    opendrift:2211: 2026-07-15 20:40:00 - step 203 of 300 - 9933 active elements (67 deactivated)
13:23:48 INFO    opendrift:2211: 2026-07-15 20:50:00 - step 204 of 300 - 9932 active elements (68 deactivated)
13:23:48 INFO    opendrift:2211: 2026-07-15 21:00:00 - step 205 of 300 - 9931 active elements (69 deactivated)
13:23:48 INFO    opendrift:2211: 2026-07-15 21:10:00 - step 206 of 300 - 9931 active elements (69 deactivated)
13:23:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:48 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:49 INFO    opendrift:2211: 2026-07-15 21:20:00 - step 207 of 300 - 9930 active elements (70 deactivated)
13:23:49 INFO    opendrift:2211: 2026-07-15 21:30:00 - step 208 of 300 - 9928 active elements (72 deactivated)
13:23:49 INFO    opendrift:2211: 2026-07-15 21:40:00 - step 209 of 300 - 9926 active elements (74 deactivated)
13:23:49 INFO    opendrift:2211: 2026-07-15 21:50:00 - step 210 of 300 - 9925 active elements (75 deactivated)
13:23:49 INFO    opendrift:2211: 2026-07-15 22:00:00 - step 211 of 300 - 9920 active elements (80 deactivated)
13:23:49 INFO    opendrift:2211: 2026-07-15 22:10:00 - step 212 of 300 - 9917 active elements (83 deactivated)
13:23:50 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:50 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:50 INFO    opendrift:2211: 2026-07-15 22:20:00 - step 213 of 300 - 9914 active elements (86 deactivated)
13:23:50 INFO    opendrift:2211: 2026-07-15 22:30:00 - step 214 of 300 - 9913 active elements (87 deactivated)
13:23:50 INFO    opendrift:2211: 2026-07-15 22:40:00 - step 215 of 300 - 9911 active elements (89 deactivated)
13:23:50 INFO    opendrift:2211: 2026-07-15 22:50:00 - step 216 of 300 - 9911 active elements (89 deactivated)
13:23:50 INFO    opendrift:2211: 2026-07-15 23:00:00 - step 217 of 300 - 9908 active elements (92 deactivated)
13:23:51 INFO    opendrift:2211: 2026-07-15 23:10:00 - step 218 of 300 - 9908 active elements (92 deactivated)
13:23:51 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:51 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:51 INFO    opendrift:2211: 2026-07-15 23:20:00 - step 219 of 300 - 9906 active elements (94 deactivated)
13:23:51 INFO    opendrift:2211: 2026-07-15 23:30:00 - step 220 of 300 - 9902 active elements (98 deactivated)
13:23:51 INFO    opendrift:2211: 2026-07-15 23:40:00 - step 221 of 300 - 9900 active elements (100 deactivated)
13:23:52 INFO    opendrift:2211: 2026-07-15 23:50:00 - step 222 of 300 - 9900 active elements (100 deactivated)
13:23:52 INFO    opendrift:2211: 2026-07-16 00:00:00 - step 223 of 300 - 9898 active elements (102 deactivated)
13:23:52 INFO    opendrift:2211: 2026-07-16 00:10:00 - step 224 of 300 - 9898 active elements (102 deactivated)
13:23:52 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:52 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:52 INFO    opendrift:2211: 2026-07-16 00:20:00 - step 225 of 300 - 9895 active elements (105 deactivated)
13:23:53 INFO    opendrift:2211: 2026-07-16 00:30:00 - step 226 of 300 - 9895 active elements (105 deactivated)
13:23:53 INFO    opendrift:2211: 2026-07-16 00:40:00 - step 227 of 300 - 9894 active elements (106 deactivated)
13:23:53 INFO    opendrift:2211: 2026-07-16 00:50:00 - step 228 of 300 - 9888 active elements (112 deactivated)
13:23:53 INFO    opendrift:2211: 2026-07-16 01:00:00 - step 229 of 300 - 9887 active elements (113 deactivated)
13:23:53 INFO    opendrift:2211: 2026-07-16 01:10:00 - step 230 of 300 - 9886 active elements (114 deactivated)
13:23:54 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:54 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:54 INFO    opendrift:2211: 2026-07-16 01:20:00 - step 231 of 300 - 9886 active elements (114 deactivated)
13:23:54 INFO    opendrift:2211: 2026-07-16 01:30:00 - step 232 of 300 - 9884 active elements (116 deactivated)
13:23:54 INFO    opendrift:2211: 2026-07-16 01:40:00 - step 233 of 300 - 9880 active elements (120 deactivated)
13:23:54 INFO    opendrift:2211: 2026-07-16 01:50:00 - step 234 of 300 - 9879 active elements (121 deactivated)
13:23:54 INFO    opendrift:2211: 2026-07-16 02:00:00 - step 235 of 300 - 9877 active elements (123 deactivated)
13:23:54 INFO    opendrift:2211: 2026-07-16 02:10:00 - step 236 of 300 - 9876 active elements (124 deactivated)
13:23:55 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:55 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:55 INFO    opendrift:2211: 2026-07-16 02:20:00 - step 237 of 300 - 9874 active elements (126 deactivated)
13:23:55 INFO    opendrift:2211: 2026-07-16 02:30:00 - step 238 of 300 - 9870 active elements (130 deactivated)
13:23:55 INFO    opendrift:2211: 2026-07-16 02:40:00 - step 239 of 300 - 9867 active elements (133 deactivated)
13:23:55 INFO    opendrift:2211: 2026-07-16 02:50:00 - step 240 of 300 - 9861 active elements (139 deactivated)
13:23:55 INFO    opendrift:2211: 2026-07-16 03:00:00 - step 241 of 300 - 9858 active elements (142 deactivated)
13:23:56 INFO    opendrift:2211: 2026-07-16 03:10:00 - step 242 of 300 - 9855 active elements (145 deactivated)
13:23:56 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:56 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:56 INFO    opendrift:2211: 2026-07-16 03:20:00 - step 243 of 300 - 9851 active elements (149 deactivated)
13:23:56 INFO    opendrift:2211: 2026-07-16 03:30:00 - step 244 of 300 - 9850 active elements (150 deactivated)
13:23:57 INFO    opendrift:2211: 2026-07-16 03:40:00 - step 245 of 300 - 9849 active elements (151 deactivated)
13:23:57 INFO    opendrift:2211: 2026-07-16 03:50:00 - step 246 of 300 - 9848 active elements (152 deactivated)
13:23:57 INFO    opendrift:2211: 2026-07-16 04:00:00 - step 247 of 300 - 9847 active elements (153 deactivated)
13:23:57 INFO    opendrift:2211: 2026-07-16 04:10:00 - step 248 of 300 - 9844 active elements (156 deactivated)
13:23:58 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:58 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:58 INFO    opendrift:2211: 2026-07-16 04:20:00 - step 249 of 300 - 9837 active elements (163 deactivated)
13:23:58 INFO    opendrift:2211: 2026-07-16 04:30:00 - step 250 of 300 - 9833 active elements (167 deactivated)
13:23:58 INFO    opendrift:2211: 2026-07-16 04:40:00 - step 251 of 300 - 9824 active elements (176 deactivated)
13:23:58 INFO    opendrift:2211: 2026-07-16 04:50:00 - step 252 of 300 - 9820 active elements (180 deactivated)
13:23:58 INFO    opendrift:2211: 2026-07-16 05:00:00 - step 253 of 300 - 9814 active elements (186 deactivated)
13:23:58 INFO    opendrift:2211: 2026-07-16 05:10:00 - step 254 of 300 - 9809 active elements (191 deactivated)
13:23:59 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:59 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:23:59 INFO    opendrift:2211: 2026-07-16 05:20:00 - step 255 of 300 - 9802 active elements (198 deactivated)
13:23:59 INFO    opendrift:2211: 2026-07-16 05:30:00 - step 256 of 300 - 9799 active elements (201 deactivated)
13:23:59 INFO    opendrift:2211: 2026-07-16 05:40:00 - step 257 of 300 - 9798 active elements (202 deactivated)
13:23:59 INFO    opendrift:2211: 2026-07-16 05:50:00 - step 258 of 300 - 9792 active elements (208 deactivated)
13:24:00 INFO    opendrift:2211: 2026-07-16 06:00:00 - step 259 of 300 - 9787 active elements (213 deactivated)
13:24:00 INFO    opendrift:2211: 2026-07-16 06:10:00 - step 260 of 300 - 9781 active elements (219 deactivated)
13:24:00 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:00 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:00 INFO    opendrift:2211: 2026-07-16 06:20:00 - step 261 of 300 - 9772 active elements (228 deactivated)
13:24:00 INFO    opendrift:2211: 2026-07-16 06:30:00 - step 262 of 300 - 9767 active elements (233 deactivated)
13:24:01 INFO    opendrift:2211: 2026-07-16 06:40:00 - step 263 of 300 - 9763 active elements (237 deactivated)
13:24:01 INFO    opendrift:2211: 2026-07-16 06:50:00 - step 264 of 300 - 9753 active elements (247 deactivated)
13:24:01 INFO    opendrift:2211: 2026-07-16 07:00:00 - step 265 of 300 - 9743 active elements (257 deactivated)
13:24:01 INFO    opendrift:2211: 2026-07-16 07:10:00 - step 266 of 300 - 9732 active elements (268 deactivated)
13:24:01 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:01 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:02 INFO    opendrift:2211: 2026-07-16 07:20:00 - step 267 of 300 - 9728 active elements (272 deactivated)
13:24:02 INFO    opendrift:2211: 2026-07-16 07:30:00 - step 268 of 300 - 9715 active elements (285 deactivated)
13:24:02 INFO    opendrift:2211: 2026-07-16 07:40:00 - step 269 of 300 - 9704 active elements (296 deactivated)
13:24:02 INFO    opendrift:2211: 2026-07-16 07:50:00 - step 270 of 300 - 9692 active elements (308 deactivated)
13:24:02 INFO    opendrift:2211: 2026-07-16 08:00:00 - step 271 of 300 - 9677 active elements (323 deactivated)
13:24:02 INFO    opendrift:2211: 2026-07-16 08:10:00 - step 272 of 300 - 9665 active elements (335 deactivated)
13:24:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:03 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:03 INFO    opendrift:2211: 2026-07-16 08:20:00 - step 273 of 300 - 9655 active elements (345 deactivated)
13:24:03 INFO    opendrift:2211: 2026-07-16 08:30:00 - step 274 of 300 - 9638 active elements (362 deactivated)
13:24:03 INFO    opendrift:2211: 2026-07-16 08:40:00 - step 275 of 300 - 9628 active elements (372 deactivated)
13:24:03 INFO    opendrift:2211: 2026-07-16 08:50:00 - step 276 of 300 - 9618 active elements (382 deactivated)
13:24:03 INFO    opendrift:2211: 2026-07-16 09:00:00 - step 277 of 300 - 9601 active elements (399 deactivated)
13:24:03 INFO    opendrift:2211: 2026-07-16 09:10:00 - step 278 of 300 - 9584 active elements (416 deactivated)
13:24:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:04 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:04 INFO    opendrift:2211: 2026-07-16 09:20:00 - step 279 of 300 - 9574 active elements (426 deactivated)
13:24:04 INFO    opendrift:2211: 2026-07-16 09:30:00 - step 280 of 300 - 9557 active elements (443 deactivated)
13:24:04 INFO    opendrift:2211: 2026-07-16 09:40:00 - step 281 of 300 - 9543 active elements (457 deactivated)
13:24:04 INFO    opendrift:2211: 2026-07-16 09:50:00 - step 282 of 300 - 9531 active elements (469 deactivated)
13:24:05 INFO    opendrift:2211: 2026-07-16 10:00:00 - step 283 of 300 - 9514 active elements (486 deactivated)
13:24:05 INFO    opendrift:2211: 2026-07-16 10:10:00 - step 284 of 300 - 9494 active elements (506 deactivated)
13:24:05 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:05 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:06 INFO    opendrift:2211: 2026-07-16 10:20:00 - step 285 of 300 - 9481 active elements (519 deactivated)
13:24:06 INFO    opendrift:2211: 2026-07-16 10:30:00 - step 286 of 300 - 9459 active elements (541 deactivated)
13:24:06 INFO    opendrift:2211: 2026-07-16 10:40:00 - step 287 of 300 - 9443 active elements (557 deactivated)
13:24:06 INFO    opendrift:2211: 2026-07-16 10:50:00 - step 288 of 300 - 9420 active elements (580 deactivated)
13:24:06 INFO    opendrift:2211: 2026-07-16 11:00:00 - step 289 of 300 - 9404 active elements (596 deactivated)
13:24:06 INFO    opendrift:2211: 2026-07-16 11:10:00 - step 290 of 300 - 9386 active elements (614 deactivated)
13:24:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:07 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:07 INFO    opendrift:2211: 2026-07-16 11:20:00 - step 291 of 300 - 9373 active elements (627 deactivated)
13:24:07 INFO    opendrift:2211: 2026-07-16 11:30:00 - step 292 of 300 - 9358 active elements (642 deactivated)
13:24:07 INFO    opendrift:2211: 2026-07-16 11:40:00 - step 293 of 300 - 9336 active elements (664 deactivated)
13:24:07 INFO    opendrift:2211: 2026-07-16 11:50:00 - step 294 of 300 - 9323 active elements (677 deactivated)
13:24:07 INFO    opendrift:2211: 2026-07-16 12:00:00 - step 295 of 300 - 9309 active elements (691 deactivated)
13:24:07 INFO    opendrift:2211: 2026-07-16 12:10:00 - step 296 of 300 - 9299 active elements (701 deactivated)
13:24:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:08 WARNING opendrift.readers.interpolation.structured:63: Ensemble data currently not extrapolated towards seafloor
13:24:08 INFO    opendrift:2211: 2026-07-16 12:20:00 - step 297 of 300 - 9286 active elements (714 deactivated)
13:24:08 INFO    opendrift:2211: 2026-07-16 12:30:00 - step 298 of 300 - 9270 active elements (730 deactivated)
13:24:08 INFO    opendrift:2211: 2026-07-16 12:40:00 - step 299 of 300 - 9250 active elements (750 deactivated)
13:24:08 INFO    opendrift:2211: 2026-07-16 12:50:00 - step 300 of 300 - 9235 active elements (765 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]
    2026-07-14T11:00:00 ... 2026-07-...

    standard_name :

    time

    long_name :

    time

    dtype :

    <class 'numpy.float64'>

    array(['2026-07-14T11:00:00.000000000', '2026-07-14T12:00:00.000000000',
           '2026-07-14T13:00:00.000000000', '2026-07-14T14:00:00.000000000',
           '2026-07-14T15:00:00.000000000', '2026-07-14T16:00:00.000000000',
           '2026-07-14T17:00:00.000000000', '2026-07-14T18:00:00.000000000',
           '2026-07-14T19:00:00.000000000', '2026-07-14T20:00:00.000000000',
           '2026-07-14T21:00:00.000000000', '2026-07-14T22:00:00.000000000',
           '2026-07-14T23:00:00.000000000', '2026-07-15T00:00:00.000000000',
           '2026-07-15T01:00:00.000000000', '2026-07-15T02:00:00.000000000',
           '2026-07-15T03:00:00.000000000', '2026-07-15T04:00:00.000000000',
           '2026-07-15T05:00:00.000000000', '2026-07-15T06:00:00.000000000',
           '2026-07-15T07:00:00.000000000', '2026-07-15T08:00:00.000000000',
           '2026-07-15T09:00:00.000000000', '2026-07-15T10:00:00.000000000',
           '2026-07-15T11:00:00.000000000', '2026-07-15T12:00:00.000000000',
           '2026-07-15T13:00:00.000000000', '2026-07-15T14:00:00.000000000',
           '2026-07-15T15:00:00.000000000', '2026-07-15T16:00:00.000000000',
           '2026-07-15T17:00:00.000000000', '2026-07-15T18:00:00.000000000',
           '2026-07-15T19:00:00.000000000', '2026-07-15T20:00:00.000000000',
           '2026-07-15T21:00:00.000000000', '2026-07-15T22:00:00.000000000',
           '2026-07-15T23:00:00.000000000', '2026-07-16T00:00:00.000000000',
           '2026-07-16T01:00:00.000000000', '2026-07-16T02:00:00.000000000',
           '2026-07-16T03:00:00.000000000', '2026-07-16T04:00:00.000000000',
           '2026-07-16T05:00:00.000000000', '2026-07-16T06:00:00.000000000',
           '2026-07-16T07:00:00.000000000', '2026-07-16T08:00:00.000000000',
           '2026-07-16T09:00:00.000000000', '2026-07-16T10:00:00.000000000',
           '2026-07-16T11:00:00.000000000', '2026-07-16T12:00:00.000000000',
           '2026-07-16T13:00:00.000000000'], 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.,  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)

  • 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.,  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)

  • 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., 180000.],
           [     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 4.936 4.94 ... 5.056 5.06

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_east

    standard_name :

    longitude

    long_name :

    longitude

    axis :

    X

    minval :

    4.832955

    maxval :

    5.0745573

    array([[4.931612 , 4.9356213, 4.939853 , ...,       nan,       nan,
                  nan],
           [4.90717  , 4.9105296, 4.9136596, ..., 5.030923 , 5.034209 ,
            5.0373845],
           [4.917548 , 4.9219522, 4.926719 , ..., 5.039757 , 5.0436316,
            5.0473933],
           ...,
           [4.9092627, 4.913295 , 4.9178605, ..., 5.040732 , 5.0436716,
            5.046938 ],
           [4.8994102, 4.9038415, 4.9071655, ..., 5.0207114, 5.023349 ,
            5.0261793],
           [4.9232616, 4.9276094, 4.931631 , ..., 5.052918 , 5.0560555,
            5.0596037]], shape=(10000, 51), dtype=float32)

  • lat
    (trajectory, time)
    float32
    60.0 59.99 59.99 ... 59.84 59.83

    dtype :

    <class 'numpy.float32'>

    units :

    degrees_north

    standard_name :

    latitude

    long_name :

    latitude

    axis :

    Y

    minval :

    59.738464

    maxval :

    60.03229

    array([[59.99818 , 59.99369 , 59.98903 , ...,       nan,       nan,
                  nan],
           [59.99252 , 59.98973 , 59.986374, ..., 59.796715, 59.79216 ,
            59.78746 ],
           [60.01556 , 60.011566, 60.007133, ..., 59.83848 , 59.83448 ,
            59.830162],
           ...,
           [59.999485, 59.99492 , 59.990036, ..., 59.806118, 59.801685,
            59.79736 ],
           [59.990494, 59.98664 , 59.98245 , ..., 59.81355 , 59.809063,
            59.804703],
           [59.997066, 59.992714, 59.987976, ..., 59.84247 , 59.838245,
            59.83346 ]], 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
    2.875 3.434 3.068 ... 2.325 2.643

    minval :

    -0.36584306

    maxval :

    4.308756

    array([[2.8745542, 3.4343262, 3.0678885, ...,       nan,       nan,
                  nan],
           [2.607406 , 2.5938118, 2.1929884, ..., 2.6071818, 2.4974403,
            2.4558716],
           [3.198797 , 3.7075558, 3.6707113, ..., 2.9432447, 3.1049058,
            2.7607417],
           ...,
           [2.782194 , 3.6081803, 3.4476635, ..., 2.1906211, 2.2628884,
            2.7568614],
           [3.5622437, 3.2561526, 1.6182138, ..., 1.8771721, 1.4539467,
            1.3798115],
           [3.4286196, 3.2851021, 2.8876314, ..., 2.5793262, 2.3247046,
            2.643027 ]], shape=(10000, 51), dtype=float32)

  • y_wind
    (trajectory, time)
    float32
    -6.791 -7.162 ... -8.003 -7.503

    minval :

    -10.016379

    maxval :

    -1.6230339

    array([[-6.7912817, -7.1623135, -7.2926936, ...,        nan,        nan,
                   nan],
           [-3.6948695, -5.1767015, -5.233243 , ..., -7.0301723, -7.068    ,
            -7.482984 ],
           [-5.852519 , -6.6333146, -7.1739078, ..., -5.9750924, -6.475196 ,
            -6.90004  ],
           ...,
           [-6.811789 , -7.4211345, -7.739211 , ..., -6.969064 , -6.5430994,
            -5.0953784],
           [-5.5776386, -6.5037208, -6.4548016, ..., -6.474922 , -5.396441 ,
            -5.4680424],
           [-6.229406 , -7.4444575, -7.184132 , ..., -6.28248  , -8.002743 ,
            -7.502672 ]], 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
    1.338 1.552 1.54 ... 1.708 1.557

    minval :

    0.08373901

    maxval :

    2.7109835

    array([[1.3378603 , 1.5520959 , 1.539845  , ...,        nan,        nan,
                   nan],
           [0.5030854 , 0.824742  , 0.7920224 , ..., 1.3830297 , 1.3823682 ,
            1.5258483 ],
           [1.0943134 , 1.4205722 , 1.5975012 , ..., 1.0913647 , 1.2685877 ,
            1.3587133 ],
           ...,
           [1.3318704 , 1.6750679 , 1.7658318 , ..., 1.3128201 , 1.1791471 ,
            0.8256539 ],
           [1.0774709 , 1.3013625 , 1.0893636 , ..., 1.1180304 , 0.76839405,
            0.78236276],
           [1.2437989 , 1.6288111 , 1.4747742 , ..., 1.1346128 , 1.7084242 ,
            1.5565817 ]], 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)

• 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 2026-07-14 13:23:01.798943

  date_created :

  2026-07-14T13:23:01.798976

  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 :

  2026-07-14 11:00:00

  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 :

  2026-07-14 13:23:01.812041

  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 :

  2026-07-16 13:00:00

  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 0:00:51.9 total 0:00:00.0 preparing 0:00:48.5 reading 0:00:23.8 interpolation 0:00:00.0 interpolation_time 0:00:03.3 rotating vectors 0:00:00.0 masking -------------------- global_landmask 0:00:02.0 total 0:00:00.0 preparing 0:00:02.0 reading 0:00:00.0 masking -------------------- Performance: 1:13.9 total time 6.7 configuration 0.0 preparing main loop 0.0 moving elements to ocean 1:07.2 main loop 3.1 updating elements 0.0 cleaning up --------------------

  geospatial_bounds_crs :

  EPSG:4326

  geospatial_bounds_vertical_crs :

  EPSG:5831

  geospatial_lat_min :

  59.738464

  geospatial_lat_max :

  60.03229

  geospatial_lat_units :

  degrees_north

  geospatial_lat_resolution :

  point

  geospatial_lon_min :

  4.832955

  geospatial_lon_max :

  5.0745573

  geospatial_lon_units :

  degrees_east

  geospatial_lon_resolution :

  point

  runtime :

  0:01:13.995087

  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)

13:24:09 WARNING opendrift:2587: Plotting fast. This will make your plots less accurate.
13:24:10 INFO    opendrift:4795: Saving animation to /root/project/docs/source/gallery/animations/example_ensemble_0.gif...
13:24:37 INFO    opendrift:3215: Time to make animation: 0:00:27.905399

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

o.plot_memory_usage()