VIIRS L3 Local Disk

This script is designed to make custom L3 files from SNPP VIIRS Deep Blue using files that have already been downloaded to local disk. This example can be edited to work with TropOMI HCHO, VIIRS_AERDB, OMNO2, OMHCHO, …

This example assumes you have downloaded satellite files. The code is largely the same as the previous. Instead of cmr_to_level3, it the method uses glob to make a list of files that it passes to paths_to_level3.

Import Library and Configure

from glob import glob
import cmaqsatproc as csp

GDNAM = '12US1'
date='2019-07-24'
readername = 'VIIRS_AERDB' # or TropOMIHCHO, VIIRS_AERDB, ...
outpath = f'{readername}_{date}_{GDNAM}.nc'

cg = csp.open_griddesc(GDNAM)
satreader = csp.reader_dict[readername]

paths = sorted(glob('AERDB_L2_VIIRS_SNPP*.nc'))
l3 = satreader.paths_to_level3(
    paths, bbox=cg.csp.bbox(), grid=cg.csp.geodf, verbose=9
)
l3.to_netcdf(outpath)