Note
Go to the end to download the full example code
ROMS native reader
import numpy as np
from opendrift.readers import reader_ROMS_native
from opendrift.models.oceandrift import OceanDrift
o = OceanDrift(loglevel=20) # Set loglevel to 0 for debug information
14:05:08 INFO opendrift.models.basemodel:539: OpenDriftSimulation initialised (version 1.10.7 / v1.10.6-119-g1da5bec)
Creating and adding reader for Nordic 4km current dataset
nordic_native = reader_ROMS_native.Reader(o.test_data_folder() +
'2Feb2016_Nordic_sigma_3d/Nordic-4km_SLEVELS_avg_00_subset2Feb2016.nc')
o.add_reader(nordic_native)
14:05:08 INFO opendrift.readers.reader_ROMS_native:90: Opening dataset: /root/project/tests/test_data/2Feb2016_Nordic_sigma_3d/Nordic-4km_SLEVELS_avg_00_subset2Feb2016.nc
14:05:08 INFO opendrift.readers.reader_ROMS_native:107: Opening file with Dataset
14:05:09 INFO opendrift.readers.reader_ROMS_native:181: Read GLS parameters from file.
14:05:09 WARNING opendrift.readers.basereader.structured:44: No proj string or projection could be derived, using 'fakeproj'. This assumes that the variables are structured and gridded approximately equidistantly on the surface (i.e. in meters). This must be guaranteed by the user. You can get rid of this warning by supplying a valid projection to the reader.
14:05:09 INFO opendrift.readers.basereader.structured:59: Making interpolator for lon,lat to x,y conversion...
Seed elements at defined positions, depth and time
o.seed_elements(lon=12.0, lat=68.3, radius=0, number=10,
z=np.linspace(0, -150, 10), time=nordic_native.start_time)
Running model
o.run(time_step=3600)
14:05:09 INFO opendrift.models.basemodel:2591: Fallback values will be used for the following variables which have no readers:
14:05:09 INFO opendrift.models.basemodel:2594: x_wind: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: y_wind: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: upward_sea_water_velocity: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: ocean_vertical_diffusivity: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wave_significant_height: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wave_stokes_drift_x_velocity: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wave_stokes_drift_y_velocity: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_swell_wave_to_direction: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_swell_wave_peak_period_from_variance_spectral_density: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_swell_wave_significant_height: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wind_wave_to_direction: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wind_wave_mean_period: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: sea_surface_wind_wave_significant_height: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: surface_downward_x_stress: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: surface_downward_y_stress: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: turbulent_kinetic_energy: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: turbulent_generic_length_scale: 0.000000
14:05:09 INFO opendrift.models.basemodel:2594: ocean_mixed_layer_thickness: 50.000000
14:05:09 INFO opendrift.models.basemodel:2672: Duration, steps or end time not specified, running until end of first reader: 2016-02-04 12:00:00
14:05:09 INFO opendrift.models.basemodel:2753: Adding a dynamical landmask with max. priority based on assumed maximum speed of 1 m/s. Adding a customised landmask may be faster...
14:05:15 INFO opendrift.models.basemodel:1701: Using existing reader for land_binary_mask
14:05:15 INFO opendrift.models.basemodel:1713: All points are in ocean
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 12:00:00 - step 1 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.readers.reader_ROMS_native:416: Time: 0:00:00.037924
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 13:00:00 - step 2 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 14:00:00 - step 3 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 15:00:00 - step 4 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 16:00:00 - step 5 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 17:00:00 - step 6 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 18:00:00 - step 7 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 19:00:00 - step 8 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 20:00:00 - step 9 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 21:00:00 - step 10 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 22:00:00 - step 11 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-02 23:00:00 - step 12 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 00:00:00 - step 13 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 01:00:00 - step 14 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 02:00:00 - step 15 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 03:00:00 - step 16 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 04:00:00 - step 17 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 05:00:00 - step 18 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 06:00:00 - step 19 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 07:00:00 - step 20 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 08:00:00 - step 21 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 09:00:00 - step 22 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 10:00:00 - step 23 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 11:00:00 - step 24 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 12:00:00 - step 25 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 13:00:00 - step 26 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 14:00:00 - step 27 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 15:00:00 - step 28 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 16:00:00 - step 29 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 17:00:00 - step 30 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 18:00:00 - step 31 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 19:00:00 - step 32 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 20:00:00 - step 33 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 21:00:00 - step 34 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 22:00:00 - step 35 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-03 23:00:00 - step 36 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 00:00:00 - step 37 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 01:00:00 - step 38 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 02:00:00 - step 39 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 03:00:00 - step 40 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 04:00:00 - step 41 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 05:00:00 - step 42 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 06:00:00 - step 43 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 07:00:00 - step 44 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 08:00:00 - step 45 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 09:00:00 - step 46 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 10:00:00 - step 47 of 48 - 10 active elements (0 deactivated)
14:05:15 INFO opendrift.models.basemodel:2882: 2016-02-04 11:00:00 - step 48 of 48 - 10 active elements (0 deactivated)
Print and plot results, with lines colored by particle depth
print(o)
o.plot(linecolor='z', fast=True)
#o.animation()
===========================
--------------------
Reader performance:
--------------------
roms native
0:00:00.3 total
0:00:00.0 preparing
0:00:00.1 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.0 masking
0:00:00.1 rotating vectors
--------------------
global_landmask
0:00:00.0 total
0:00:00.0 preparing
0:00:00.0 reading
0:00:00.0 masking
--------------------
Performance:
7.1 total time
0.5 configuration
5.6 preparing main loop
5.6 making dynamical landmask
0.0 moving elements to ocean
0.6 readers
0.0 global_landmask
0.1 postprocessing
0.8 main loop
0.4 roms native
0.0 updating elements
0.0 cleaning up
--------------------
===========================
Model: OceanDrift (OpenDrift version 1.10.7)
10 active Lagrangian3DArray particles (0 deactivated, 0 scheduled)
-------------------
Environment variables:
-----
sea_floor_depth_below_sea_level
x_sea_water_velocity
y_sea_water_velocity
1) roms native
-----
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
upward_sea_water_velocity
x_wind
y_wind
Time:
Start: 2016-02-02 12:00:00 UTC
Present: 2016-02-04 12:00:00 UTC
Calculation steps: 48 * 1:00:00 - total time: 2 days, 0:00:00
Output steps: 49 * 1:00:00
===========================
14:05:15 WARNING opendrift.models.basemodel:3226: Plotting fast. This will make your plots less accurate.
0.9917433107283277 ALPHA
(<GeoAxes: title={'center': 'OpenDrift - OceanDrift\n2016-02-02 12:00 to 2016-02-04 12:00 UTC (49 steps)'}>, <Figure size 1017.39x1100 with 2 Axes>)
Total running time of the script: (0 minutes 8.909 seconds)