Note
Go to the end to download the full example code.
SCHISM native reader
17:09:18 INFO opendrift:509: OpenDriftSimulation initialised (version 1.13.0 / v1.13.0-15-g93fccf7)
17:09:18 INFO opendrift.readers.reader_schism_native:109: Opening dataset: https://thredds.met.no/thredds/dodsC/metusers/knutfd/thredds/netcdf_unstructured_samples/schism_marl20080101_00z_3D.nc
17:09:18 INFO opendrift.readers.reader_schism_native:115: Opening file with dataset
17:09:20 INFO opendrift.models.basemodel.environment:206: Adding a dynamical landmask with max. priority based on assumed maximum speed of 2.0 m/s. Adding a customised landmask may be faster...
17:09:24 INFO opendrift.models.basemodel.environment:233: Fallback values will be used for the following variables which have no readers:
17:09:24 INFO opendrift.models.basemodel.environment:236: x_wind: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: y_wind: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: ocean_vertical_diffusivity: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wave_significant_height: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wave_stokes_drift_x_velocity: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wave_stokes_drift_y_velocity: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_swell_wave_to_direction: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_swell_wave_peak_period_from_variance_spectral_density: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_swell_wave_significant_height: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wind_wave_to_direction: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wind_wave_mean_period: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: sea_surface_wind_wave_significant_height: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: surface_downward_x_stress: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: surface_downward_y_stress: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: turbulent_kinetic_energy: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: turbulent_generic_length_scale: 0.000000
17:09:24 INFO opendrift.models.basemodel.environment:236: ocean_mixed_layer_thickness: 50.000000
17:09:24 WARNING opendrift:1860: Simulation end is not at an output time step. Extending duration from 2:24:00 to 2:30:00
17:09:24 INFO opendrift:919: Using existing reader for land_binary_mask
17:09:24 INFO opendrift:930: All points are in ocean
17:09:24 WARNING opendrift:713: Seafloor check not being run because environment is missing. This will happen the first time the function is run but if it happens subsequently there is probably a problem.
17:09:24 INFO opendrift:2056: 2008-01-01 00:30:00 - step 1 of 10 - 300 active elements (0 deactivated)
17:09:24 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:09:44 INFO opendrift:2056: 2008-01-01 00:45:00 - step 2 of 10 - 300 active elements (0 deactivated)
17:09:44 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:09:58 INFO opendrift:2056: 2008-01-01 01:00:00 - step 3 of 10 - 300 active elements (0 deactivated)
17:09:58 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:09:58 INFO opendrift:2056: 2008-01-01 01:15:00 - step 4 of 10 - 300 active elements (0 deactivated)
17:09:58 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:10:13 INFO opendrift:2056: 2008-01-01 01:30:00 - step 5 of 10 - 300 active elements (0 deactivated)
17:10:13 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:10:13 INFO opendrift:2056: 2008-01-01 01:45:00 - step 6 of 10 - 300 active elements (0 deactivated)
17:10:13 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:10:27 INFO opendrift:2056: 2008-01-01 02:00:00 - step 7 of 10 - 300 active elements (0 deactivated)
17:10:27 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:10:28 INFO opendrift:2056: 2008-01-01 02:15:00 - step 8 of 10 - 300 active elements (0 deactivated)
17:10:28 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:10:42 INFO opendrift:2056: 2008-01-01 02:30:00 - step 9 of 10 - 300 active elements (0 deactivated)
17:10:42 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
17:10:42 INFO opendrift:2056: 2008-01-01 02:45:00 - step 10 of 10 - 300 active elements (0 deactivated)
17:10:42 WARNING opendrift.readers.basereader.unstructured:141: z-coordinates are not bounds-checked
===========================
--------------------
Reader performance:
--------------------
https://thredds.met.no/thredds/dodsC/metusers/knutfd/thredds/netcdf_unstructured_samples/schism_marl20080101_00z_3D.nc
0:01:33.8 total
0:00:23.1 preparing
0:01:33.8 reading
0:00:00.2 interpolation
0:00:00.0 interpolation_time
0:00:00.0 rotating vectors
0:00:00.0 masking
--------------------
global_landmask
0:00:00.0 total
0:00:00.0 preparing
0:00:00.0 reading
0:00:00.0 masking
--------------------
Performance:
1:40.8 total time
6.5 configuration
0.0 preparing main loop
0.0 moving elements to ocean
1:34.2 main loop
0.0 updating elements
0.0 cleaning up
--------------------
===========================
Model: OceanDrift (OpenDrift version 1.13.0)
300 active Lagrangian3DArray particles (0 deactivated, 0 scheduled)
-------------------
Environment variables:
-----
sea_floor_depth_below_sea_level
sea_surface_height
upward_sea_water_velocity
x_sea_water_velocity
y_sea_water_velocity
1) https://thredds.met.no/thredds/dodsC/metusers/knutfd/thredds/netcdf_unstructured_samples/schism_marl20080101_00z_3D.nc
-----
land_binary_mask
1) global_landmask
-----
Readers not added for the following variables:
ocean_mixed_layer_thickness
ocean_vertical_diffusivity
sea_surface_swell_wave_peak_period_from_variance_spectral_density
sea_surface_swell_wave_significant_height
sea_surface_swell_wave_to_direction
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
sea_surface_wind_wave_mean_period
sea_surface_wind_wave_significant_height
sea_surface_wind_wave_to_direction
surface_downward_x_stress
surface_downward_y_stress
turbulent_generic_length_scale
turbulent_kinetic_energy
x_wind
y_wind
Discarded readers:
Time:
Start: 2008-01-01 00:30:00 UTC
Present: 2008-01-01 03:00:00 UTC
Calculation steps: 10 * 0:15:00 - total time: 2:30:00
Output steps: 11 * 0:15:00
===========================
17:10:58 WARNING opendrift:2429: Plotting fast. This will make your plots less accurate.
17:11:12 WARNING py.warnings:109: /opt/conda/envs/opendrift/lib/python3.11/site-packages/cartopy/mpl/geoaxes.py:1692: UserWarning: No data for colormapping provided via 'c'. Parameters 'cmap' will be ignored
result = super().scatter(*args, **kwargs)
17:11:12 INFO opendrift:4611: Saving animation to /root/project/docs/source/gallery/animations/example_schism_native_0.gif...
17:11:17 INFO opendrift:3048: Time to make animation: 0:00:17.997576
17:11:17 WARNING py.warnings:109: /root/project/opendrift/models/basemodel/__init__.py:3165: UserWarning: No data for colormapping provided via 'c'. Parameters 'cmap' will be ignored
points = ax.scatter([], [],
17:11:17 INFO opendrift:4611: Saving animation to /root/project/docs/source/gallery/animations/example_schism_native_1.gif...
17:11:19 INFO opendrift:3259: Time to make animation: 0:00:01.260192
import numpy as np
from datetime import timedelta, datetime
from opendrift.readers import reader_schism_native
from opendrift.readers import reader_global_landmask
from opendrift.models.oceandrift import OceanDrift
o = OceanDrift(loglevel=20) # Set loglevel to 0 for debug information
try:
# NZTM proj4 string found at https://spatialreference.org/ref/epsg/nzgd2000-new-zealand-transverse-mercator-2000/
proj4str_nztm = '+proj=tmerc +lat_0=0 +lon_0=173 +k=0.9996 +x_0=1600000 +y_0=10000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs'
schism_native = reader_schism_native.Reader(
filename = 'https://thredds.met.no/thredds/dodsC/metusers/knutfd/thredds/netcdf_unstructured_samples/schism_marl20080101_00z_3D.nc',
proj4 = proj4str_nztm,
use_3d = True)
except:
print('Thredds server not available, cannot run example')
schism_native = None
if schism_native is not None:
o.add_reader([schism_native])
# Seed elements at defined positions, depth and time
o.seed_elements(lon=174.046669, lat=-40.928116, radius=20, number=100,
z=np.linspace(0,-10, 100), time=schism_native.start_time)
o.seed_elements(lon= 173.8839, lat=-40.9160, radius=20, number=100,
z=np.linspace(0,-10, 100), time=schism_native.start_time)
o.seed_elements(lon=174.2940, lat=-41.0888, radius=20, number=100,
z=np.linspace(0,-10, 100), time=schism_native.start_time)
#%%
# Running model
o.run(time_step=900,
end_time = schism_native.start_time+timedelta(days=0.1))
# outfile='schism_native_output.nc')
# Print and plot results
print(o)
o.plot(fast=True)
o.animation()
o.animation_profile()
Total running time of the script: (2 minutes 6.611 seconds)