Note
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2D simulation profile
from datetime import datetime, timedelta
import numpy as np
from opendrift.models.oceandrift import OceanDrift
o = OceanDrift(loglevel=20) # Set loglevel to 0 for debug information
14:14:25 INFO opendrift.models.basemodel:533: OpenDriftSimulation initialised (version 1.11.2 / v1.11.2-43-gce9f6bb)
Disable any 3D motion
o.disable_vertical_motion()
14:14:25 INFO opendrift.models.oceandrift:377: Setting config: drift:vertical_advection -> False
14:14:25 INFO opendrift.models.oceandrift:377: Setting config: drift:vertical_mixing -> False
Define some constant current, wind and Stokes drift
o.set_config('environment:fallback:x_wind', 7)
o.set_config('environment:fallback:x_sea_water_velocity', .1)
o.set_config('environment:fallback:sea_surface_wave_stokes_drift_x_velocity', .2)
o.set_config('environment:fallback:sea_surface_wave_significant_height', 2)
o.set_config('environment:fallback:sea_surface_wave_period_at_variance_spectral_density_maximum', 8)
Seed elements between surface and 5m depth
time = datetime.utcnow()
z = -np.linspace(0, 5, 50)
o.seed_elements(lon=4.5, lat=60.0, z=z, radius=0, number=len(z), time=time)
14:14:25 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...
14:14:30 INFO opendrift.models.basemodel.environment:245: Fallback values will be used for the following variables which have no readers:
14:14:30 INFO opendrift.models.basemodel.environment:248: x_sea_water_velocity: 0.100000
14:14:30 INFO opendrift.models.basemodel.environment:248: y_sea_water_velocity: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_height: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: x_wind: 7.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: y_wind: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: upward_sea_water_velocity: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: ocean_vertical_diffusivity: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_significant_height: 2.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_x_velocity: 0.200000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_y_velocity: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_period_at_variance_spectral_density_maximum: 8.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_swell_wave_to_direction: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_swell_wave_peak_period_from_variance_spectral_density: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_swell_wave_significant_height: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wind_wave_to_direction: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wind_wave_mean_period: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wind_wave_significant_height: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: surface_downward_x_stress: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: surface_downward_y_stress: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: turbulent_kinetic_energy: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: turbulent_generic_length_scale: 0.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: ocean_mixed_layer_thickness: 50.000000
14:14:30 INFO opendrift.models.basemodel.environment:248: sea_floor_depth_below_sea_level: 10000.000000
Running model for 6 hours
o.run(duration=timedelta(hours=6), time_step=600)
14:14:30 INFO opendrift.models.basemodel:911: Using existing reader for land_binary_mask
14:14:30 INFO opendrift.models.basemodel:922: All points are in ocean
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To check that z is really kept constant for all particles
o.plot_property('z')
Vertical profile of advection. Note the decaying importance of Stokes drift, and the additional windage of the element at surface
o.animation_profile()
/root/project/opendrift/models/basemodel/__init__.py:3122: UserWarning: No data for colormapping provided via 'c'. Parameters 'cmap' will be ignored
points = ax.scatter([], [],
14:14:31 INFO opendrift.models.basemodel:4570: Saving animation to /root/project/docs/source/gallery/animations/example_2d_0.gif...
14:14:34 INFO opendrift.models.basemodel:3217: Time to make animation: 0:00:03.331758
Total running time of the script: (0 minutes 10.615 seconds)