HELP - Creating FINN inventory after 2020

[Abhinav Sharma]

Hi all,

I am trying to make biomass burning data for April 2022 for Indian subcontinent using the same algorithm as used by FINN. I have used MODIS Active fire, Land Cover Type and Vegetation Continuous Fields to make emissions for various gases and particles in gm/day which I convert to mol/km2-hr and ug/m2-s based on area burned.

To check for the calculations, I have tried comparing emissions produced in this way to text files provided by FINN (April 2019) and wrffirechemi_<domain>_<date> files for same region and time (April 2019). The emissions produced by me are comparable to those present in text file but differ from wrffirechemi produced by fire_emiss by large values.

Also while trying to save my emissions as replacement of wrffirechemi files, I am having some trouble in saving time information. The Time variable in wrffirechemi appears to be virtual and I cannot assign values to it. As a result WRF stops with a fatal call

FATAL CALLED FROM FILE:  module_date_time.G  LINE:     910
WRFU_TimeSet() in wrf_atotime() FAILED

I'd like to know:

1. how to provide this time information (seconds since 1970-01-01 00:00:00)  to a virtual variable so WRF reads my files similar to wrffirechemi

2. to solve discrepancy in emission data produced by me and fire_emiss