4.10. CLAVR-x Cloud Product Reader¶
The CLAVR-x reader is for reading files created by the Community Satellite Processing Package (CSPP) Clouds from AVHRR Extended (CLAVR-x) processing system software. The CLAVR-x reader supports CSPP CLAVR-x product files created from VIIRS, MODIS and AVHRR imaging sensors in the native HDF4 format. For more information on this product, please visit the CSPP LEO website: https://cimss.ssec.wisc.edu/cspp/.
The reader can be specified with the polar2grid.sh
command using the clavrx reader name.
The CLAVR-x reader provides the following products, which include
support for the VIIRS Day/Night Band Lunar Reflectance:
Product Name |
Description |
|---|---|
cloud_type |
Cloud Type |
cld_height_acha |
Cloud Top Height (m) |
cld_temp_acha |
Cloud Top Temperature (K) |
cld_emiss_acha |
Cloud Emissivity |
cld_opd_dcomp |
Cloud Optical Depth Daytime |
cld_opd_nlcomp |
Cloud Optical Depth Nighttime |
cld_reff_dcomp |
Cloud Effective Radius Daytime (micron) |
cld_reff_nlomp |
Cloud Effective Radius Nighttime (micron) |
cloud_phase |
Cloud Phase (5 categories) |
rain_rate |
Rain Rate (mm/hr) |
refl_lunar_dnb_nom |
Lunar Reflectance (VIIRS DNB nighttime only) |
4.10.1. Command Line Arguments¶
usage: polar2grid.sh -r clavrx -w <writer> [-h]
Examples:
polar2grid.sh -r clavrx -w geotiff -h
polar2grid.sh -r clavrx -w awips_tiled --sector-id LCC --list-products -f clavrx_npp_d20260218_t1710291_e1711532_b74163.level2.hdf
polar2grid.sh -r clavrx -w geotiff -p cld_height_acha cloud_phase cloud_type -f noaa20/clavrx_j01*.hdf
polar2grid.sh -r clavrx -w hdf5 --grid-coverage 0.002 -p cld_opd_nlcomp cld_reff_nlcomp refl_lunar_dnb_nom -f snpp/night/clavrx_npp*.hdf
polar2grid.sh -r clavrx -w binary -f clavrx_a1.26048.2127.1000m.level2.hdf
polar2grid.sh -r clavrx -w awips_tiled -p cld_height_acha --num-workers 6 --grid-coverage .002 -g polar_alaska_1km --sector-id Polar --letters --compress -f /metopc/clavrx_hrpt_M03_20260218_0759_37795.l1b.level2.hdf
