Note
Click here to download the full example code
Drift at different depths
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
Out:
16:11:07 INFO opendrift.models.basemodel: OpenDriftSimulation initialised (version 1.7.1 / v1.7.1-145-gdf95ed3)
Using live data from Thredds
o.add_readers_from_list([
'https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be'])
Seed 1000 elements at random depths
z = -np.random.rand(2000)*50
o.seed_elements(lon=4.8, lat=60.0, z=z, radius=0, number=2000,
time=datetime.utcnow())
print(o)
Out:
===========================
Model: OceanDrift (OpenDrift version 1.7.1)
0 active Lagrangian3DArray particles (0 deactivated, 2000 scheduled)
-------------------
Environment variables:
-----
Readers not added for the following variables:
land_binary_mask
ocean_mixed_layer_thickness
ocean_vertical_diffusivity
sea_floor_depth_below_sea_level
sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
sea_surface_wave_period_at_variance_spectral_density_maximum
sea_surface_wave_significant_height
sea_surface_wave_stokes_drift_x_velocity
sea_surface_wave_stokes_drift_y_velocity
surface_downward_x_stress
surface_downward_y_stress
turbulent_generic_length_scale
turbulent_kinetic_energy
upward_sea_water_velocity
x_sea_water_velocity
x_wind
y_sea_water_velocity
y_wind
---
Lazy readers:
LazyReader: https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
===========================
Adding some diffusion
o.set_config('drift:horizontal_diffusivity', 10) # m2/s
Running model
o.run(duration=timedelta(hours=24), time_step=1800)
Out:
16:11:07 INFO opendrift.models.basemodel: Fallback values will be used for the following variables which have no readers:
16:11:07 INFO opendrift.models.basemodel: x_sea_water_velocity: 0.000000
16:11:07 INFO opendrift.models.basemodel: y_sea_water_velocity: 0.000000
16:11:07 INFO opendrift.models.basemodel: x_wind: 0.000000
16:11:07 INFO opendrift.models.basemodel: y_wind: 0.000000
16:11:07 INFO opendrift.models.basemodel: upward_sea_water_velocity: 0.000000
16:11:07 INFO opendrift.models.basemodel: ocean_vertical_diffusivity: 0.000000
16:11:07 INFO opendrift.models.basemodel: sea_surface_wave_significant_height: 0.000000
16:11:07 INFO opendrift.models.basemodel: sea_surface_wave_stokes_drift_x_velocity: 0.000000
16:11:07 INFO opendrift.models.basemodel: sea_surface_wave_stokes_drift_y_velocity: 0.000000
16:11:07 INFO opendrift.models.basemodel: sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000
16:11:07 INFO opendrift.models.basemodel: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
16:11:07 INFO opendrift.models.basemodel: surface_downward_x_stress: 0.000000
16:11:07 INFO opendrift.models.basemodel: surface_downward_y_stress: 0.000000
16:11:07 INFO opendrift.models.basemodel: turbulent_kinetic_energy: 0.000000
16:11:07 INFO opendrift.models.basemodel: turbulent_generic_length_scale: 0.000000
16:11:07 INFO opendrift.models.basemodel: ocean_mixed_layer_thickness: 50.000000
16:11:07 INFO opendrift.models.basemodel: sea_floor_depth_below_sea_level: 10000.000000
16:11:07 INFO opendrift.models.basemodel: Adding a dynamical landmask with max. priority based on assumed maximum speed of 1 m/s. Adding a customised landmask may be faster...
16:11:10 INFO opendrift.models.basemodel: Using existing reader for land_binary_mask
16:11:10 INFO opendrift.models.basemodel: All points are in ocean
16:11:10 INFO opendrift.models.basemodel: 2021-10-23 16:11:07.712393 - step 1 of 48 - 2000 active elements (0 deactivated)
16:11:10 INFO opendrift.readers.reader_netCDF_CF_generic: Opening dataset: https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
16:11:14 INFO opendrift.models.basemodel: 2021-10-23 16:41:07.712393 - step 2 of 48 - 2000 active elements (0 deactivated)
16:11:15 INFO opendrift.models.basemodel: 2021-10-23 17:11:07.712393 - step 3 of 48 - 2000 active elements (0 deactivated)
16:11:16 INFO opendrift.models.basemodel: 2021-10-23 17:41:07.712393 - step 4 of 48 - 2000 active elements (0 deactivated)
16:11:16 INFO opendrift.models.basemodel: 2021-10-23 18:11:07.712393 - step 5 of 48 - 2000 active elements (0 deactivated)
16:11:17 INFO opendrift.models.basemodel: 2021-10-23 18:41:07.712393 - step 6 of 48 - 2000 active elements (0 deactivated)
16:11:17 INFO opendrift.models.basemodel: 2021-10-23 19:11:07.712393 - step 7 of 48 - 2000 active elements (0 deactivated)
16:11:19 INFO opendrift.models.basemodel: 2021-10-23 19:41:07.712393 - step 8 of 48 - 2000 active elements (0 deactivated)
16:11:19 INFO opendrift.models.basemodel: 2021-10-23 20:11:07.712393 - step 9 of 48 - 2000 active elements (0 deactivated)
16:11:21 INFO opendrift.models.basemodel: 2021-10-23 20:41:07.712393 - step 10 of 48 - 2000 active elements (0 deactivated)
16:11:21 INFO opendrift.models.basemodel: 2021-10-23 21:11:07.712393 - step 11 of 48 - 2000 active elements (0 deactivated)
16:11:22 INFO opendrift.models.basemodel: 2021-10-23 21:41:07.712393 - step 12 of 48 - 2000 active elements (0 deactivated)
16:11:23 INFO opendrift.models.basemodel: 2021-10-23 22:11:07.712393 - step 13 of 48 - 2000 active elements (0 deactivated)
16:11:24 INFO opendrift.models.basemodel: 2021-10-23 22:41:07.712393 - step 14 of 48 - 2000 active elements (0 deactivated)
16:11:24 INFO opendrift.models.basemodel: 2021-10-23 23:11:07.712393 - step 15 of 48 - 2000 active elements (0 deactivated)
16:11:26 INFO opendrift.models.basemodel: 2021-10-23 23:41:07.712393 - step 16 of 48 - 2000 active elements (0 deactivated)
16:11:26 INFO opendrift.models.basemodel: 2021-10-24 00:11:07.712393 - step 17 of 48 - 2000 active elements (0 deactivated)
16:11:28 INFO opendrift.models.basemodel: 2021-10-24 00:41:07.712393 - step 18 of 48 - 2000 active elements (0 deactivated)
16:11:29 INFO opendrift.models.basemodel: 2021-10-24 01:11:07.712393 - step 19 of 48 - 2000 active elements (0 deactivated)
16:11:30 INFO opendrift.models.basemodel: 2021-10-24 01:41:07.712393 - step 20 of 48 - 2000 active elements (0 deactivated)
16:11:30 INFO opendrift.models.basemodel: 2021-10-24 02:11:07.712393 - step 21 of 48 - 2000 active elements (0 deactivated)
16:11:32 INFO opendrift.models.basemodel: 2021-10-24 02:41:07.712393 - step 22 of 48 - 2000 active elements (0 deactivated)
16:11:32 INFO opendrift.models.basemodel: 2021-10-24 03:11:07.712393 - step 23 of 48 - 2000 active elements (0 deactivated)
16:11:34 INFO opendrift.models.basemodel: 2021-10-24 03:41:07.712393 - step 24 of 48 - 2000 active elements (0 deactivated)
16:11:34 INFO opendrift.models.basemodel: 2021-10-24 04:11:07.712393 - step 25 of 48 - 2000 active elements (0 deactivated)
16:11:35 INFO opendrift.models.basemodel: 2021-10-24 04:41:07.712393 - step 26 of 48 - 2000 active elements (0 deactivated)
16:11:36 INFO opendrift.models.basemodel: 2021-10-24 05:11:07.712393 - step 27 of 48 - 2000 active elements (0 deactivated)
16:11:37 INFO opendrift.models.basemodel: 2021-10-24 05:41:07.712393 - step 28 of 48 - 2000 active elements (0 deactivated)
16:11:37 INFO opendrift.models.basemodel: 2021-10-24 06:11:07.712393 - step 29 of 48 - 2000 active elements (0 deactivated)
16:11:40 INFO opendrift.models.basemodel: 2021-10-24 06:41:07.712393 - step 30 of 48 - 2000 active elements (0 deactivated)
16:11:40 INFO opendrift.models.basemodel: 2021-10-24 07:11:07.712393 - step 31 of 48 - 2000 active elements (0 deactivated)
16:11:42 INFO opendrift.models.basemodel: 2021-10-24 07:41:07.712393 - step 32 of 48 - 2000 active elements (0 deactivated)
16:11:42 INFO opendrift.models.basemodel: 2021-10-24 08:11:07.712393 - step 33 of 48 - 2000 active elements (0 deactivated)
16:11:44 INFO opendrift.models.basemodel: 2021-10-24 08:41:07.712393 - step 34 of 48 - 2000 active elements (0 deactivated)
16:11:44 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
16:11:44 INFO opendrift.models.basemodel: 2021-10-24 09:11:07.712393 - step 35 of 48 - 2000 active elements (0 deactivated)
16:11:46 INFO opendrift.models.basemodel: 2021-10-24 09:41:07.712393 - step 36 of 48 - 2000 active elements (0 deactivated)
16:11:46 INFO opendrift.models.basemodel: 2021-10-24 10:11:07.712393 - step 37 of 48 - 2000 active elements (0 deactivated)
16:11:48 INFO opendrift.models.basemodel: 2021-10-24 10:41:07.712393 - step 38 of 48 - 2000 active elements (0 deactivated)
16:11:48 INFO opendrift.models.basemodel: 2021-10-24 11:11:07.712393 - step 39 of 48 - 2000 active elements (0 deactivated)
16:11:50 INFO opendrift.models.basemodel: 2021-10-24 11:41:07.712393 - step 40 of 48 - 2000 active elements (0 deactivated)
16:11:50 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
16:11:50 INFO opendrift.models.basemodel: 2021-10-24 12:11:07.712393 - step 41 of 48 - 2000 active elements (0 deactivated)
16:11:52 INFO opendrift.models.basemodel: 2021-10-24 12:41:07.712393 - step 42 of 48 - 2000 active elements (0 deactivated)
16:11:52 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
16:11:52 INFO opendrift.models.basemodel: 2021-10-24 13:11:07.712393 - step 43 of 48 - 2000 active elements (0 deactivated)
16:11:55 INFO opendrift.models.basemodel: 2021-10-24 13:41:07.712393 - step 44 of 48 - 2000 active elements (0 deactivated)
16:11:55 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
16:11:55 INFO opendrift.models.basemodel: 2021-10-24 14:11:07.712393 - step 45 of 48 - 2000 active elements (0 deactivated)
16:11:57 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
16:11:57 INFO opendrift.models.basemodel: 2021-10-24 14:41:07.712393 - step 46 of 48 - 2000 active elements (0 deactivated)
16:11:57 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
16:11:57 INFO opendrift.models.basemodel: 2021-10-24 15:11:07.712393 - step 47 of 48 - 2000 active elements (0 deactivated)
16:11:59 INFO opendrift.models.basemodel: 2021-10-24 15:41:07.712393 - step 48 of 48 - 2000 active elements (0 deactivated)
16:11:59 WARNING opendrift.readers.basereader.structured: Data block from https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be not large enough to cover element positions within timestep. Buffer size (7) must be increased. See `Variables.set_buffer_size`.
Plot results with lines and particles colored by depth
print(o)
o.plot(linecolor='z', buffer=.1, show_particles=False, fast=False)
o.animation(color='z', buffer=.1, fast=True)
Out:
===========================
--------------------
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/sea/norkyst800m/1h/aggregate_be
0:00:46.0 total
0:00:00.0 preparing
0:00:44.2 reading
0:00:00.6 interpolation
0:00:00.0 interpolation_time
0:00:01.8 rotating vectors
0:00:00.0 masking
--------------------
Performance:
52.4 total time
0.3 configuration
2.6 preparing main loop
2.6 making dynamical landmask
0.0 moving elements to ocean
48.5 readers
0.0 global_landmask
0.1 postprocessing
49.3 main loop
46.1 https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
0.1 updating elements
0.0 cleaning up
--------------------
===========================
Model: OceanDrift (OpenDrift version 1.7.1)
2000 active Lagrangian3DArray particles (0 deactivated, 0 scheduled)
-------------------
Environment variables:
-----
land_binary_mask
1) global_landmask
-----
sea_floor_depth_below_sea_level
upward_sea_water_velocity
x_sea_water_velocity
x_wind
y_sea_water_velocity
y_wind
1) https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
-----
Readers not added for the following variables:
ocean_mixed_layer_thickness
ocean_vertical_diffusivity
sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
sea_surface_wave_period_at_variance_spectral_density_maximum
sea_surface_wave_significant_height
sea_surface_wave_stokes_drift_x_velocity
sea_surface_wave_stokes_drift_y_velocity
surface_downward_x_stress
surface_downward_y_stress
turbulent_generic_length_scale
turbulent_kinetic_energy
Time:
Start: 2021-10-23 16:11:07.712393
Present: 2021-10-24 16:11:07.712393
Calculation steps: 48 * 0:30:00 - total time: 1 day, 0:00:00
Output steps: 49 * 0:30:00
===========================
16:12:36 WARNING opendrift.models.basemodel: Plotting fast. This will make your plots less accurate.
16:12:38 INFO opendrift.models.basemodel: Saving animation to /root/project/docs/source/gallery/animations/example_depth_0.gif...
16:12:38 INFO opendrift.models.basemodel: Making animated gif...
MovieWriter imagemagick unavailable; using Pillow instead.
Total running time of the script: ( 1 minutes 42.245 seconds)