4.11. VIIRS EDR Active Fires Reader¶
The VIIRS EDR Active Fires reader operates on CSPP NetCDF I-Band (AFIMG) Resolution or M-Band Resolution (AFMOD) Environmental Data Record files. Files usually have the following naming schemes:
AFIMG_npp_d20200109_t0959025_e1000267_b42492_c20200109101744000538_cspp_dev.nc, and/or AFMOD_j01_d20200109_t1711298_e1712525_b11100_c20200109173628141913_cspp_dev.nc
This reader’s default resampling algorithm is nearest
for Nearest Neighbor resampling.
The --remap_method
parameter is set to nearest
.
Product Name |
Description |
---|---|
confidence_cat |
Fire Confidence Category (AFIMG Resolution Only) |
T4 |
I-Band 4 Temperature (AFIMG Resolution Only) |
power |
Fire Radiative Power |
confidence_pct |
Fire Confidence Percentage (AFMOD Resolution Only) |
T13 |
M-Band 13 Temperature (AFMOD Resolution Only) |
4.11.1. Command Line Arguments¶
usage: polar2grid.sh viirs_edr_active_fires <writer> [-h] [--list-products]
[-p PRODUCTS [PRODUCTS ...]]
4.11.1.1. Frontend Initialization¶
swath extraction initialization options
- --list-products
List available frontend products and exit
Default: False
4.11.1.2. Frontend Swath Extraction¶
swath extraction options
- -p, --products
Specify frontend products to process
Some output GeoTIFF fire products are color enhanced:
AFIMG
confidence_cat - Low (Yellow), Nominal (Orange), High (Red)
power - 1 - 250 and above (MW) Yellow->Red
AFMOD
confidence_pct - 1-100% Yellow->Red
power - 1 - 250 and above (MW) Yellow->Red
Examples:
$POLAR2GRID_HOME/bin/polar2grid.sh viirs_edr_active_fires gtiff -h
polar2grid.sh viirs_edr_active_fires gtiff --list-products -f ../active_fire_edr/AFIMG*.nc
polar2grid.sh viirs_edr_active_fires gtiff --list-products -f ../active_fire_edr/AFMOD*.nc
polar2grid.sh viirs_edr_active_fires gtiff -p confidence_cat T4 img_edr/AFIMG*.nc
polar2grid.sh viirs_edr_active_fires gtiff -g lcc_aus -p confidence_pct T13 -f AFMOD_j01_d20191120_t1513353_e1514581_b10389_c20191121192444396115_cspp_dev.nc
NOTE: The active fire images can be overlaid onto another GeoTIFF. See Overlay GeoTIFF Images for instructions.