FINNv2.5 NRT
FINNv2.5 is run each day using Rapid Response fire detections from MODIS (Terra+Aqua) and VIIRS (Suomi-NPP), which are available from NASA FIRMS. The emissions for each fire (1km resolution) for each day are provided in text files at https://www.acom.ucar.edu/acresp/MODELING/finn_emis_txt/ with filenames starting with 'FINNv2.5.1_modvrs_nrt_'. VOC speciation is provided for MOZART-4, SAPRC99 and GEOS-Chem, and a separate file has only NOX, CO, aerosols, total NMOC, etc. FRP (fire radiative power) is also recorded in this file but FRP is not used in the calculation of emissions.
2024 gridded MOZART species emissions for Jan 1 - June 30 are available at: https://www.acom.ucar.edu/acresp/MODELING/finn_emis_txt/2024_gridded_0.1deg/
FINNv1 NRT
Emissions from FINNv1 are also available in this directory (GLOB_*).
NOTE on units
In the text files with emissions for each fire, the aerosols (BC, OC, PM2.5, PM10), as well as the gas-phase lumped species 'NOXasNO' and NMOC, are in units of kg/day, and the gas-phase species are in moles/day. In these files 'AREA' is the area burned in m^2; 'BMASS' is the biomass burned per area burned in kg/m^2. 'GENVEG' specifies the vegetation type assumed for the fire: 1 = grasslands and savanna; 2 = woody savanna/shrublands; 3 = tropical forest; 4 = temperate forest; 5 = boreal forest; 6 = temperate evergreen forest; 9 = croplands; 0 = no vegetation.
In the 0.1x0.1 degree gridded files, all compounds are converted to molecules/cm^2/sec, where aerosols have been converted from kg to molecules using molecular weight of 12 g/mole.
The text files also contain POLYID and FIREID. Each fire point identified by satellites is assigned a POLYID. Each POLYID is assigned to a FIREID. If multiple fire points are located together as part of a big fire, they are assigned to the same FIREID.
FRP (in MW, megawatts) is also included in the text (each_fire) files. FRP is not used in the calculation of FINN emissions, but has been averaged to each 1-km fire in FINN emissions for potential use by users.
Note on FINNv2.5.1_modvrs_nrt_base_FRP_*.txt files: When reading these files, please use a space as the column delimiter as a comma is missing in the middle of each line. This is fixed starting with Jan 2025 files.