DICE-Africa anthropogenic emissions inventory
On this page we shall provide an overview of the DICE-Africa anthropogenic emissions inventory. This inventory has been incorporated into GEOS-Chem v11-02 and newer versions via the HEMCO emissions component.
- Marais, E. and C. Wiedinmyer, Air quality impact of Diffuse and Inefficient Combustion Emissions in Africa (DICE-Africa), Environ. Sci. Technol., 50(19), 10739–10745, doi:10.1021/acs.est.6b02602, 2016.
Previous issues that have now been resolved
Use unique names for DICE-Africa entries in HEMCO_Config.rc
Avoid double-counting between DICE-Africa and EDGAR
Eloise Marais wrote:
DICE-Africa does not account for all anthropogenic pollution and there is overlap between what is in DICE and what is in EDGAR, so summing the two inventories would lead to double counting of pollution from vehicles and residential burning of traditional biofuels. I couldn’t think of a more eloquent way to sum together a selection of EDGAR emissions and all DICE emissions than to include relevant EDGAR emissions in the DICE-Africa brackets. I tried applying a reverse/ante regional map (0 for Africa; 1 everywhere else) to EDGAR emissions, but this doesn’t work and probably requires coding in HEMCO to accommodate this type of mask. This fix resolves all issues, and hopefully doesn’t introduce new issues. It didn’t when I implemented this in an earlier version of HEMCO with GEOS-Chem v10-01. I also ran a few tests with the HEMCO standalone file to confirm this. This approach also ensures stability when users use DICE for Africa and want to switch between different global emission inventories (e.g. HTAP or EDGAR).