Note
Click here to download the full example code
Drift at different depthsΒΆ
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:
16:14:38 INFO opendrift.models.basemodel: OpenDriftSimulation initialised (version 1.6.0 / v1.6.0-161-g3380aa5)
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 1.6.0)
0 active Lagrangian3DArray particles (0 deactivated, 2000 scheduled)
-------------------
Environment variables:
-----
Readers not added for the following variables:
land_binary_mask
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:
16:14:38 INFO opendrift.models.basemodel: Fallback values will be used for the following variables which have no readers:
16:14:38 INFO opendrift.models.basemodel: x_sea_water_velocity: 0.000000
16:14:38 INFO opendrift.models.basemodel: y_sea_water_velocity: 0.000000
16:14:38 INFO opendrift.models.basemodel: x_wind: 0.000000
16:14:38 INFO opendrift.models.basemodel: y_wind: 0.000000
16:14:38 INFO opendrift.models.basemodel: upward_sea_water_velocity: 0.000000
16:14:38 INFO opendrift.models.basemodel: ocean_vertical_diffusivity: 0.000000
16:14:38 INFO opendrift.models.basemodel: sea_surface_wave_significant_height: 0.000000
16:14:38 INFO opendrift.models.basemodel: sea_surface_wave_stokes_drift_x_velocity: 0.000000
16:14:38 INFO opendrift.models.basemodel: sea_surface_wave_stokes_drift_y_velocity: 0.000000
16:14:38 INFO opendrift.models.basemodel: sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000
16:14:38 INFO opendrift.models.basemodel: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
16:14:38 INFO opendrift.models.basemodel: surface_downward_x_stress: 0.000000
16:14:38 INFO opendrift.models.basemodel: surface_downward_y_stress: 0.000000
16:14:38 INFO opendrift.models.basemodel: turbulent_kinetic_energy: 0.000000
16:14:38 INFO opendrift.models.basemodel: turbulent_generic_length_scale: 0.000000
16:14:38 INFO opendrift.models.basemodel: sea_floor_depth_below_sea_level: 10000.000000
16:14:38 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...
16:14:40 INFO opendrift.models.basemodel: Using existing reader for land_binary_mask
16:14:40 INFO opendrift.models.basemodel: All points are in ocean
16:14:40 INFO opendrift.models.basemodel: 2021-07-16 16:14:38.499999 - step 1 of 48 - 2000 active elements (0 deactivated)
16:14:41 INFO opendrift.readers.reader_netCDF_CF_generic: Opening dataset: https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
16:14:43 INFO opendrift.models.basemodel: 2021-07-16 16:44:38.499999 - step 2 of 48 - 2000 active elements (0 deactivated)
16:14:43 INFO opendrift.models.basemodel: 2021-07-16 17:14:38.499999 - step 3 of 48 - 2000 active elements (0 deactivated)
16:14:44 INFO opendrift.models.basemodel: 2021-07-16 17:44:38.499999 - step 4 of 48 - 2000 active elements (0 deactivated)
16:14:45 INFO opendrift.models.basemodel: 2021-07-16 18:14:38.499999 - step 5 of 48 - 2000 active elements (0 deactivated)
16:14:46 INFO opendrift.models.basemodel: 2021-07-16 18:44:38.499999 - step 6 of 48 - 2000 active elements (0 deactivated)
16:14:46 INFO opendrift.models.basemodel: 2021-07-16 19:14:38.499999 - step 7 of 48 - 2000 active elements (0 deactivated)
16:14:47 INFO opendrift.models.basemodel: 2021-07-16 19:44:38.499999 - step 8 of 48 - 2000 active elements (0 deactivated)
16:14:47 INFO opendrift.models.basemodel: 2021-07-16 20:14:38.499999 - step 9 of 48 - 2000 active elements (0 deactivated)
16:14:48 INFO opendrift.models.basemodel: 2021-07-16 20:44:38.499999 - step 10 of 48 - 2000 active elements (0 deactivated)
16:14:48 INFO opendrift.models.basemodel: 2021-07-16 21:14:38.499999 - step 11 of 48 - 2000 active elements (0 deactivated)
16:14:49 INFO opendrift.models.basemodel: 2021-07-16 21:44:38.499999 - step 12 of 48 - 2000 active elements (0 deactivated)
16:14:49 INFO opendrift.models.basemodel: 2021-07-16 22:14:38.499999 - step 13 of 48 - 2000 active elements (0 deactivated)
16:14:50 INFO opendrift.models.basemodel: 2021-07-16 22:44:38.499999 - step 14 of 48 - 2000 active elements (0 deactivated)
16:14:50 INFO opendrift.models.basemodel: 2021-07-16 23:14:38.499999 - step 15 of 48 - 2000 active elements (0 deactivated)
16:14:51 INFO opendrift.models.basemodel: 2021-07-16 23:44:38.499999 - step 16 of 48 - 2000 active elements (0 deactivated)
16:14:51 INFO opendrift.models.basemodel: 2021-07-17 00:14:38.499999 - step 17 of 48 - 2000 active elements (0 deactivated)
16:14:52 INFO opendrift.models.basemodel: 2021-07-17 00:44:38.499999 - step 18 of 48 - 2000 active elements (0 deactivated)
16:14:52 INFO opendrift.models.basemodel: 2021-07-17 01:14:38.499999 - step 19 of 48 - 2000 active elements (0 deactivated)
16:14:53 INFO opendrift.models.basemodel: 2021-07-17 01:44:38.499999 - step 20 of 48 - 2000 active elements (0 deactivated)
16:14:53 INFO opendrift.models.basemodel: 2021-07-17 02:14:38.499999 - step 21 of 48 - 2000 active elements (0 deactivated)
16:14:54 INFO opendrift.models.basemodel: 2021-07-17 02:44:38.499999 - step 22 of 48 - 2000 active elements (0 deactivated)
16:14:54 INFO opendrift.models.basemodel: 2021-07-17 03:14:38.499999 - step 23 of 48 - 2000 active elements (0 deactivated)
16:14:55 INFO opendrift.models.basemodel: 2021-07-17 03:44:38.499999 - step 24 of 48 - 2000 active elements (0 deactivated)
16:14:55 INFO opendrift.models.basemodel: 2021-07-17 04:14:38.499999 - step 25 of 48 - 2000 active elements (0 deactivated)
16:14:57 INFO opendrift.models.basemodel: 2021-07-17 04:44:38.499999 - step 26 of 48 - 2000 active elements (0 deactivated)
16:14:57 INFO opendrift.models.basemodel: 2021-07-17 05:14:38.499999 - step 27 of 48 - 2000 active elements (0 deactivated)
16:14:58 INFO opendrift.models.basemodel: 2021-07-17 05:44:38.499999 - step 28 of 48 - 2000 active elements (0 deactivated)
16:14:58 INFO opendrift.models.basemodel: 2021-07-17 06:14:38.499999 - step 29 of 48 - 2000 active elements (0 deactivated)
16:14:59 INFO opendrift.models.basemodel: 2021-07-17 06:44:38.499999 - step 30 of 48 - 2000 active elements (0 deactivated)
16:15:00 INFO opendrift.models.basemodel: 2021-07-17 07:14:38.499999 - step 31 of 48 - 2000 active elements (0 deactivated)
16:15:01 INFO opendrift.models.basemodel: 2021-07-17 07:44:38.499999 - step 32 of 48 - 2000 active elements (0 deactivated)
16:15:01 INFO opendrift.models.basemodel: 2021-07-17 08:14:38.499999 - step 33 of 48 - 2000 active elements (0 deactivated)
16:15:02 INFO opendrift.models.basemodel: 2021-07-17 08:44:38.499999 - step 34 of 48 - 2000 active elements (0 deactivated)
16:15:02 INFO opendrift.models.basemodel: 2021-07-17 09:14:38.499999 - step 35 of 48 - 2000 active elements (0 deactivated)
16:15:03 INFO opendrift.models.basemodel: 2021-07-17 09:44:38.499999 - step 36 of 48 - 2000 active elements (0 deactivated)
16:15:03 INFO opendrift.models.basemodel: 2021-07-17 10:14:38.499999 - step 37 of 48 - 2000 active elements (0 deactivated)
16:15:04 INFO opendrift.models.basemodel: 2021-07-17 10:44:38.499999 - step 38 of 48 - 2000 active elements (0 deactivated)
16:15:04 INFO opendrift.models.basemodel: 2021-07-17 11:14:38.499999 - step 39 of 48 - 2000 active elements (0 deactivated)
16:15:05 INFO opendrift.models.basemodel: 2021-07-17 11:44:38.499999 - step 40 of 48 - 2000 active elements (0 deactivated)
16:15:05 INFO opendrift.models.basemodel: 2021-07-17 12:14:38.499999 - step 41 of 48 - 2000 active elements (0 deactivated)
16:15:06 INFO opendrift.models.basemodel: 2021-07-17 12:44:38.499999 - step 42 of 48 - 2000 active elements (0 deactivated)
16:15:06 INFO opendrift.models.basemodel: 2021-07-17 13:14:38.499999 - step 43 of 48 - 2000 active elements (0 deactivated)
16:15:07 INFO opendrift.models.basemodel: 2021-07-17 13:44:38.499999 - step 44 of 48 - 2000 active elements (0 deactivated)
16:15:07 INFO opendrift.models.basemodel: 2021-07-17 14:14:38.499999 - step 45 of 48 - 2000 active elements (0 deactivated)
16:15:08 INFO opendrift.models.basemodel: 2021-07-17 14:44:38.499999 - step 46 of 48 - 2000 active elements (0 deactivated)
16:15:08 INFO opendrift.models.basemodel: 2021-07-17 15:14:38.499999 - step 47 of 48 - 2000 active elements (0 deactivated)
16:15:09 INFO opendrift.models.basemodel: 2021-07-17 15:44:38.499999 - step 48 of 48 - 2000 active elements (0 deactivated)
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
0:00:00.1 total
0:00:00.0 preparing
0:00:00.1 reading
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
0:00:27.4 total
0:00:00.0 preparing
0:00:25.7 reading
0:00:00.5 interpolation
0:00:00.0 interpolation_time
0:00:01.7 rotating vectors
0:00:00.0 masking
--------------------
Performance:
31.9 total time
0.2 configuration
2.4 preparing main loop
2.4 making dynamical landmask
0.0 moving elements to ocean
28.6 readers
0.1 global_landmask
0.1 postprocessing
29.0 main loop
27.5 https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be
0.1 updating elements
0.1 cleaning up
--------------------
===========================
Model: OceanDrift (OpenDrift version 1.6.0)
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_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: 2021-07-16 16:14:38.499999
Present: 2021-07-17 16:14:38.499999
Calculation steps: 48 * 0:30:00 - total time: 1 day, 0:00:00
Output steps: 49 * 0:30:00
===========================
16:15:58 WARNING opendrift.models.basemodel: Plotting fast. This will make your plots less accurate.
16:15:59 INFO opendrift.models.basemodel: Saving animation to /root/project/docs/source/gallery/animations/example_depth_0.gif...
16:15:59 INFO opendrift.models.basemodel: Making animated gif...
Total running time of the script: ( 3 minutes 18.310 seconds)