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-rwxr-xr-xplotter/vertical_from_grib.py88
1 files changed, 88 insertions, 0 deletions
diff --git a/plotter/vertical_from_grib.py b/plotter/vertical_from_grib.py
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+++ b/plotter/vertical_from_grib.py
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+#!/usr/bin/env python3
+import os
+
+import datetime
+import json
+
+import xarray as xr
+from metpy.units import units
+import metpy.calc as mpcalc
+import numpy as np
+
+import skewt
+
+import misc
+
+config = {
+ 'source':'dwd_icon-eu/combined.grib2',
+ 'plots':[
+ {
+ 'lat':47.9626,
+ 'lon':11.9964,
+ 'name':'Antersberg',
+ 'analysis':'lcl'
+ },
+ ]
+}
+
+def run(source, plots, output='.'):
+ misc.create_output_dir(output)
+ data = xr.load_dataset(source, engine='cfgrib')
+
+ for plot in plots:
+ _plot(data, output, **plot)
+
+def _plot(data, output, lat, lon, name, analysis=None):
+ for_temp = data.sel(latitude=lat, longitude = lon, method='nearest')
+ for_temp = for_temp[['r', 't', 'u', 'v']]
+ index = []
+
+ for step in for_temp.coords['step']:
+ this_step = for_temp.sel(step=step)
+
+ p = this_step.coords['isobaricInhPa'].values * units.hPa
+ T = this_step.t.values * units.K
+ relHum = this_step.r.values * units.percent
+ Td = mpcalc.dewpoint_from_relative_humidity(T, relHum)
+ u = this_step.u.values * (units.m / units.s)
+ v = this_step.v.values * (units.m / units.s)
+
+ valid = misc.np_time_convert(step.valid_time.values)
+ init = misc.np_time_convert(step.time.values)
+
+ valid_str = valid.strftime('%d %b %Y - %HUTC')
+ init_str = init.strftime('%d %b %Y - %HUTC')
+ hours_since_init_str = str(int(this_step.step.values / np.timedelta64(1,'h'))).zfill(2)
+
+ skt = skewt.Skewt(p=p, T=T, Td=Td)
+ skt.addWindUV(u, v)
+ skt.addInfo(f'{name} INIT+' + hours_since_init_str)
+ skt.addInfo(f"VALID: {valid_str}")
+ skt.addInfo(f"INIT : {init_str}")
+ skt.addInfo(f"LAT {lat} LON {lon}")
+
+ if analysis is not None:
+ skt.addAnalysis(shade=True, analysis=analysis)
+
+ # TODO get from source!
+ skt.addInfo("FORECAST DWD ICON-D2")
+
+ init_for_filename = init.strftime('%Y-%m-%d-%HUTC')
+
+ outname = f'skewt_{name}_{init_for_filename}+{hours_since_init_str}.png'
+ skt.plot(filename=os.path.join(output, outname))
+
+ index.append(
+ {
+ 'file': outname,
+ 'init': init_str,
+ 'valid': valid_str,
+ 'valid_offset': hours_since_init_str
+ }
+ )
+
+ with open(os.path.join(output, f'skewt_{name}.index.json'), 'w') as f:
+ f.write(json.dumps(index, indent=4))
+
+if __name__ == '__main__':
+ run(**config)