import cmocean # noqa: F401
import numpy as np
import xarray as xr
from mpas_tools.ocean.viz.transect import compute_transect, plot_transect
from polaris import Step
[docs]
class Viz(Step):
"""
A step for plotting the results of the default overflow forward step
Similar viz is duplicated for the RPE task in its analysis step
"""
[docs]
def __init__(self, component, indir):
"""
Create the step
Parameters
----------
component : polaris.Component
The component the step belongs to
indir : str
the directory the step is in, to which ``name`` will be appended
"""
super().__init__(component=component, name='viz', indir=indir)
self.add_input_file(
filename='mesh.nc', target='../../init/culled_mesh.nc'
)
self.add_input_file(filename='init.nc', target='../../init/init.nc')
self.add_input_file(
filename='output.nc', target='../forward/output.nc'
)
[docs]
def run(self):
"""
Run this step of the task
"""
ds_mesh = xr.load_dataset('mesh.nc')
ds_init = xr.load_dataset('init.nc')
ds = xr.load_dataset('output.nc')
x_min = ds_mesh.xVertex.min().values
x_max = ds_mesh.xVertex.max().values
y_mid = ds_mesh.yCell.median().values
x = xr.DataArray(data=np.linspace(x_min, x_max, 2), dims=('nPoints',))
y = y_mid * xr.ones_like(x)
t_index = 0
ds_transect = compute_transect(
x=x,
y=y,
ds_horiz_mesh=ds_mesh,
layer_thickness=ds_init.layerThickness.isel(Time=t_index),
bottom_depth=ds_init.bottomDepth,
min_level_cell=ds_init.minLevelCell - 1,
max_level_cell=ds_init.maxLevelCell - 1,
spherical=False,
)
field_name = 'temperature'
cellMask = ds_init.cellMask.isel(nVertLevels=0)
mpas_field = ds_init[field_name].isel(Time=t_index)
mpas_field_valid = ds_init[field_name].isel(nCells=cellMask == 1)
vmin = mpas_field_valid.min().values
vmax = mpas_field_valid.max().values
plot_transect(
ds_transect=ds_transect,
mpas_field=mpas_field,
title=f'{field_name} at y={1e-3 * y_mid:.1f} km',
out_filename=f'init_{field_name}_section.png',
vmin=vmin,
vmax=vmax,
cmap='cmo.thermal',
colorbar_label=r'$^\circ$C',
color_start_and_end=False,
)
t_index = ds.sizes['Time'] - 1
ds_transect = compute_transect(
x=x,
y=y,
ds_horiz_mesh=ds_mesh,
layer_thickness=ds.layerThickness.isel(Time=t_index),
bottom_depth=ds_init.bottomDepth,
min_level_cell=ds_init.minLevelCell - 1,
max_level_cell=ds_init.maxLevelCell - 1,
spherical=False,
)
field_name = 'temperature'
mpas_field = ds[field_name].isel(Time=t_index)
plot_transect(
ds_transect=ds_transect,
mpas_field=mpas_field,
title=f'{field_name} at y={1e-3 * y_mid:.1f} km',
out_filename=f'final_{field_name}_section.png',
vmin=vmin,
vmax=vmax,
cmap='cmo.thermal',
colorbar_label=r'$^\circ$C',
color_start_and_end=False,
)