Biomass burning emissions
Here is an update on the status of the GFED2 8-day emissions:
Ray Nassar (email@example.com) wrote:
- The [GFED2 8-day emissions] code is working and I am using it for my work. Overall, the results I get for CO and ozone are very similar to my monthly GFED runs but this changes if one focuses on a pecific region over with a short time scale.
- [Here are] ... some of [my comparisons]. This is by no means a complete analysis but more of an initial assessment.
In my opinion, the move to 8-day emissions is a definite improvement, although as I said, the differences are fairly localized and really only matter for time scales shorter than one month.
--Bmy 10:21, 4 April 2008 (EDT)
The fix described below for making 2006 the last available year of GFED2 data has now been implemented into GEOS-Chem v8-01-01. This will be released sometime in January 2008.
GFED2 8-day emissions are in the pipeline but have not yet been tested in any version of GEOS-Chem.
The previous benchmarked version (GEOS-Chem v7-04-12) is able to compute GFED2 biomass emissions from 1997-2005.
We have recently obtained the GFED2 C emissions data for the year 2006. In order to use the 2006 C emissions data to compute 2006 biomass emissions, then you must modify the following lines in the file "gfed2_biomass_mod.f":
! 2005 is currently the last year of available data IF ( YYYY > 2005 ) THEN YYYY = 2005 WRITE( 6, 120 ) 120 FORMAT( 'YEAR > 2005; Using GFED2 biomass for 2005!' ) ENDIF
! 2006 is currently the last year of available data IF ( YYYY > 2006 ) THEN YYYY = 2006 WRITE( 6, 120 ) 120 FORMAT( 'YEAR > 2006; Using GFED2 biomass for 2006!' ) ENDIF
NOTE: This fix has been added into GEOS-Chem v8-01-01. For the time being, if you need to use the 2006 GFED2 emissions in an earlier version than v8-01-01, then please apply the above changes to your research code.