Seafloor oil spill

from datetime import timedelta
from opendrift.readers import reader_netCDF_CF_generic
from opendrift.models.openoil import OpenOil

o = OpenOil(loglevel=20)  # Set loglevel to 0 for debug information

# Norkyst
reader_norkyst = reader_netCDF_CF_generic.Reader(o.test_data_folder() + '14Jan2016_NorKyst_z_3d/NorKyst-800m_ZDEPTHS_his_00_3Dsubset.nc')
#reader_norkyst = reader_netCDF_CF_generic.Reader('https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be')

o.add_reader([reader_norkyst])
o.set_config('environment:fallback:x_wind', 3)
o.set_config('environment:fallback:y_wind', 7)
o.set_config('drift:vertical_mixing', True)
16:50:37 INFO    opendrift.models.basemodel:528: OpenDriftSimulation initialised (version 1.10.7 / v1.10.6-168-g8266719)
16:50:37 INFO    opendrift.readers.reader_netCDF_CF_generic:92: Opening dataset: /root/project/tests/test_data/14Jan2016_NorKyst_z_3d/NorKyst-800m_ZDEPTHS_his_00_3Dsubset.nc

Setting the range of droplet sizes for the seafloor release

o.set_config('seed:droplet_size_distribution','uniform')
o.set_config('seed:droplet_diameter_min_subsea', 0.0001)
o.set_config('seed:droplet_diameter_max_subsea', 0.0005)

# 'normal' and 'lognormal' distributions can also be specified
# o.set_config('seed:droplet_size_distribution','lognormal')
# o.set_config('seed:droplet_diameter_mu',0.001)  # 1 mm
# o.set_config('seed:droplet_diameter_sigma',0.0008) # 0.8 mm

Seeding some particles

time = [reader_norkyst.start_time,
        reader_norkyst.start_time + timedelta(hours=1)]
o.seed_elements(lon=4.5, lat=62.0, z='seafloor', radius=0, number=3000,
                time=time, oil_type='GENERIC DIESEL')
16:50:37 INFO    opendrift.models.openoil.openoil:1602: Using uniform droplet size distribution between 0.0001 and 0.0005 m for elements seeded below sea surface.
16:50:37 INFO    opendrift.models.openoil.adios.dirjs:71: Querying ADIOS database for oil: GENERIC DIESEL
16:50:37 INFO    opendrift.models.openoil.openoil:1657: Using density 841.2 and viscosity 6.3404392151148136e-06 of oiltype GENERIC DIESEL
16:50:37 INFO    opendrift.models.basemodel.environment:220: Adding a dynamical landmask with max. priority based on assumed maximum speed of 1.0 m/s. Adding a customised landmask may be faster...
16:50:43 INFO    opendrift.models.basemodel.environment:247: Fallback values will be used for the following variables which have no readers:
16:50:43 INFO    opendrift.models.basemodel.environment:250:    x_wind: 3.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    y_wind: 7.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    upward_sea_water_velocity: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_surface_wave_significant_height: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_surface_wave_stokes_drift_x_velocity: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_surface_wave_stokes_drift_y_velocity: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_surface_wave_period_at_variance_spectral_density_maximum: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_ice_area_fraction: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_ice_x_velocity: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    sea_ice_y_velocity: 0.000000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    ocean_vertical_diffusivity: 0.020000
16:50:43 INFO    opendrift.models.basemodel.environment:250:    ocean_mixed_layer_thickness: 50.000000
16:50:43 WARNING opendrift.models.basemodel.environment:465: Simulation has no simulation_extent, cannot check reader coverage

Running model with a small timestep to resolve the boyant rising

o.run(duration=timedelta(hours=2), time_step=60, time_step_output=60)
16:50:43 INFO    opendrift.models.basemodel:891: Using existing reader for land_binary_mask
16:50:43 INFO    opendrift.models.basemodel:903: All points are in ocean
16:50:43 INFO    opendrift.models.openoil.openoil:651: Oil-water surface tension is 0.029464 Nm
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Print and plot results

print(o)

o.animation_profile()
===========================
--------------------
Reader performance:
--------------------
/root/project/tests/test_data/14Jan2016_NorKyst_z_3d/NorKyst-800m_ZDEPTHS_his_00_3Dsubset.nc
 0:00:03.4  total
 0:00:00.0  preparing
 0:00:02.2  reading
 0:00:01.9  interpolation
 0:00:00.1  interpolation_time
 0:00:00.0  masking
 0:00:01.1  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:
   19.1 total time
    6.4 configuration
    0.3 preparing main loop
      0.0 moving elements to ocean
   12.0 main loop
      4.4 updating elements
        0.1 oil weathering
          0.0 updating viscosities
          0.0 updating densities
          0.0 evaporation
          0.0 emulsification
          0.0 dispersion
        3.8 vertical mixing
    0.3 cleaning up
--------------------
===========================
Model:  OpenOil     (OpenDrift version 1.10.7)
        3000 active Oil particles  (0 deactivated, 0 scheduled)
-------------------
Environment variables:
  -----
  sea_floor_depth_below_sea_level
  sea_water_salinity
  sea_water_temperature
  x_sea_water_velocity
  y_sea_water_velocity
     1) /root/project/tests/test_data/14Jan2016_NorKyst_z_3d/NorKyst-800m_ZDEPTHS_his_00_3Dsubset.nc
  -----
  land_binary_mask
     1) global_landmask
  -----
Readers not added for the following variables:
  ocean_mixed_layer_thickness
  ocean_vertical_diffusivity
  sea_ice_area_fraction
  sea_ice_x_velocity
  sea_ice_y_velocity
  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
  upward_sea_water_velocity
  x_wind
  y_wind

Discarded readers:

Time:
        Start: 2016-01-14 00:00:00 UTC
        Present: 2016-01-14 02:00:00 UTC
        Calculation steps: 120 * 0:01:00 - total time: 2:00:00
        Output steps: 121 * 0:01:00
===========================

16:50:56 INFO    opendrift.models.basemodel:4514: Saving animation to /root/project/docs/source/gallery/animations/example_oilspill_seafloor_0.gif...
16:51:10 INFO    opendrift.models.basemodel:3178: Time to make animation: 0:00:14.456608
../_images/example_oilspill_seafloor_0.gif
o.animate_vertical_distribution(bins=30, subsamplingstep=5)
16:51:12 INFO    opendrift.models.basemodel:4514: Saving animation to /root/project/docs/source/gallery/animations/example_oilspill_seafloor_1.gif...
16:51:31 INFO    opendrift.models.oceandrift:689: Time to make animation: 0:00:20.977856
../_images/example_oilspill_seafloor_1.gif
o.plot_oil_budget()
GENERIC DIESEL (841.2 kg/m3) - 2016-01-14 00:00 to 2016-01-14 02:00

Total running time of the script: (0 minutes 57.590 seconds)

Gallery generated by Sphinx-Gallery