Note
Go to the end to download the full example code.
Ship drift
from datetime import datetime
from opendrift.models.shipdrift import ShipDrift
o = ShipDrift(loglevel=20)
o.add_readers_from_list([
'https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml',
'https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc',
'https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml'
])
14:07:37 INFO opendrift.models.basemodel:507: OpenDriftSimulation initialised (version 1.11.2 / v1.11.2-69-gb16198b)
Seed ship elements at defined position and time Note: beam/length ratio is larger than allowed, but is then clipped internally
o.seed_elements(lon=5.0, lat=63.0, radius=1000, number=1000,
time=datetime.utcnow(),
length=80.0, beam=20.0, height=9.0, draft=4.0)
14:07:37 WARNING opendrift.models.shipdrift:181: Ratio of beam to length should be in range 0.12 to 0.18, given range is 0.25-0.25. Using border value.
14:07:37 INFO opendrift.models.basemodel.environment:218: Adding a dynamical landmask with max. priority based on assumed maximum speed of 2.0 m/s. Adding a customised landmask may be faster...
14:07:43 INFO opendrift.models.basemodel.environment:245: Fallback values will be used for the following variables which have no readers:
14:07:43 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_x_velocity: 0.000000
14:07:43 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_y_velocity: 0.000000
14:07:43 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_significant_height: 0.000000
14:07:43 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
Running model
o.run(steps=24, stop_on_error=True)
14:07:43 INFO opendrift.models.basemodel:885: Using existing reader for land_binary_mask
14:07:43 INFO opendrift.models.basemodel:896: All points are in ocean
14:07:43 INFO opendrift.models.basemodel:1985: 2024-06-04 14:07:37.911926 - step 1 of 24 - 1000 active elements (0 deactivated)
14:07:44 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
14:07:50 INFO opendrift.readers.reader_netCDF_CF_generic:314: Detected dimensions: {'x': 'x', 'y': 'y', 'time': 'time'}
14:07:51 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
14:07:52 INFO opendrift.readers.reader_netCDF_CF_generic:314: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
14:07:52 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
14:07:58 INFO opendrift.readers.reader_netCDF_CF_generic:314: Detected dimensions: {'y': 'rlat', 'x': 'rlon', 'time': 'time'}
14:08:00 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:00 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:01 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:01 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:02 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:02 INFO opendrift.models.basemodel:1985: 2024-06-04 15:07:37.911926 - step 2 of 24 - 1000 active elements (0 deactivated)
14:08:04 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:04 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:05 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:05 INFO opendrift.models.basemodel:1985: 2024-06-04 16:07:37.911926 - step 3 of 24 - 1000 active elements (0 deactivated)
14:08:07 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:07 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:07 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:07 INFO opendrift.models.basemodel:1985: 2024-06-04 17:07:37.911926 - step 4 of 24 - 1000 active elements (0 deactivated)
14:08:09 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:09 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:10 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:10 INFO opendrift.models.basemodel:1985: 2024-06-04 18:07:37.911926 - step 5 of 24 - 1000 active elements (0 deactivated)
14:08:11 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:11 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:12 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:12 INFO opendrift.models.basemodel:1985: 2024-06-04 19:07:37.911926 - step 6 of 24 - 1000 active elements (0 deactivated)
14:08:14 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:14 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:15 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:15 INFO opendrift.models.basemodel:1985: 2024-06-04 20:07:37.911926 - step 7 of 24 - 1000 active elements (0 deactivated)
14:08:16 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:16 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:17 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:17 INFO opendrift.models.basemodel:1985: 2024-06-04 21:07:37.911926 - step 8 of 24 - 1000 active elements (0 deactivated)
14:08:18 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:18 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:19 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:19 INFO opendrift.models.basemodel:1985: 2024-06-04 22:07:37.911926 - step 9 of 24 - 1000 active elements (0 deactivated)
14:08:21 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:21 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:21 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:21 INFO opendrift.models.basemodel:1985: 2024-06-04 23:07:37.911926 - step 10 of 24 - 1000 active elements (0 deactivated)
14:08:23 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:23 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:24 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:24 INFO opendrift.models.basemodel:1985: 2024-06-05 00:07:37.911926 - step 11 of 24 - 1000 active elements (0 deactivated)
14:08:25 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:25 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:26 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:26 INFO opendrift.models.basemodel:1985: 2024-06-05 01:07:37.911926 - step 12 of 24 - 1000 active elements (0 deactivated)
14:08:28 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:28 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:29 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:29 INFO opendrift.models.basemodel:1985: 2024-06-05 02:07:37.911926 - step 13 of 24 - 1000 active elements (0 deactivated)
14:08:31 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:31 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:31 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:31 INFO opendrift.models.basemodel:1985: 2024-06-05 03:07:37.911926 - step 14 of 24 - 1000 active elements (0 deactivated)
14:08:33 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:33 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:34 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:34 INFO opendrift.models.basemodel:1985: 2024-06-05 04:07:37.911926 - step 15 of 24 - 1000 active elements (0 deactivated)
14:08:35 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:35 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:36 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:36 INFO opendrift.models.basemodel:1985: 2024-06-05 05:07:37.911926 - step 16 of 24 - 1000 active elements (0 deactivated)
14:08:37 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:37 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:39 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:39 INFO opendrift.models.basemodel:1985: 2024-06-05 06:07:37.911926 - step 17 of 24 - 1000 active elements (0 deactivated)
14:08:40 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:40 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:41 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:41 INFO opendrift.models.basemodel:1985: 2024-06-05 07:07:37.911926 - step 18 of 24 - 1000 active elements (0 deactivated)
14:08:42 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:42 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:44 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:44 INFO opendrift.models.basemodel:1985: 2024-06-05 08:07:37.911926 - step 19 of 24 - 1000 active elements (0 deactivated)
14:08:45 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:45 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:46 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:46 INFO opendrift.models.basemodel:1985: 2024-06-05 09:07:37.911926 - step 20 of 24 - 1000 active elements (0 deactivated)
14:08:47 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:47 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:48 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:48 INFO opendrift.models.basemodel:1985: 2024-06-05 10:07:37.911926 - step 21 of 24 - 1000 active elements (0 deactivated)
14:08:49 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:49 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:50 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:50 INFO opendrift.models.basemodel:1985: 2024-06-05 11:07:37.911926 - step 22 of 24 - 1000 active elements (0 deactivated)
14:08:52 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:52 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:53 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:53 INFO opendrift.models.basemodel:1985: 2024-06-05 12:07:37.911926 - step 23 of 24 - 1000 active elements (0 deactivated)
14:08:55 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:55 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:56 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
14:08:56 INFO opendrift.models.basemodel:1985: 2024-06-05 13:07:37.911926 - step 24 of 24 - 1000 active elements (0 deactivated)
14:08:58 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:58 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
14:08:59 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
Print and plot results
print(o)
o.plot(linecolor='orientation')
#o.animation(color='orientation', markersize=20, filename="orientation.gif", legend=['left','right'],colorbar=False,cmap='bwr')
o.animation(color='orientation', legend=['left','right'], markersize=20, colorbar=False, cmap='bwr')
===========================
--------------------
Reader performance:
--------------------
global_landmask
0:00:00.0 total
0:00:00.0 preparing
0:00:00.0 reading
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
0:00:17.5 total
0:00:00.0 preparing
0:00:17.3 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
0:00:20.1 total
0:00:00.0 preparing
0:00:19.9 reading
0:00:00.2 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
0:00:22.0 total
0:00:00.0 preparing
0:00:21.7 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
Performance:
1:21.5 total time
6.2 configuration
0.0 preparing main loop
0.0 moving elements to ocean
1:15.3 main loop
0.8 updating elements
0.0 cleaning up
--------------------
===========================
Model: ShipDrift (OpenDrift version 1.11.2)
1000 active ShipObject particles (0 deactivated, 0 scheduled)
-------------------
Environment variables:
-----
land_binary_mask
1) global_landmask
-----
x_sea_water_velocity
y_sea_water_velocity
1) https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
2) https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
-----
x_wind
y_wind
1) https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
-----
sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
sea_surface_wave_significant_height
sea_surface_wave_stokes_drift_x_velocity
sea_surface_wave_stokes_drift_y_velocity
1) https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
Discarded readers:
Time:
Start: 2024-06-04 14:07:37.911926 UTC
Present: 2024-06-05 14:07:37.911926 UTC
Calculation steps: 24 * 1:00:00 - total time: 1 day, 0:00:00
Output steps: 25 * 1:00:00
===========================
14:09:27 INFO opendrift.models.basemodel:4547: Saving animation to /root/project/docs/source/gallery/animations/example_shipdrift_0.gif...
14:10:38 INFO opendrift.models.basemodel:2980: Time to make animation: 0:01:14.349539
Total running time of the script: (3 minutes 6.103 seconds)