GEOS-5 GMI Configuration for PIESA: Difference between revisions
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Trace gas emissions from fossil fuels, biofuels, and biomass burning are based on inventories and routines provided by the Harvard University GEOS-Chem group. Individual sources are described below. The general approach for fossil fuel and biofuel emissions is to begin with a global inventory and overwrite particular regions where regional inventory data is available. Fossil fuel emissions are scaled from the inventory base year to the simulation year using scaling factors from the Harvard University GEOS-Chem group (''van Donkelaar et al.'', 2008). Biomass burning emissions use emission factors for boreal forest, tropical forest, and savanna/herb/other vegetation types, to convert Global Fire Emissions Database version 2 (GFEDv2) (Randerson, 2007; Van der Werf, 2006) carbon emissions to emissions of NOx, CO, or VOCs, using a carbon to dry matter ratio of 0.45. | Trace gas emissions from fossil fuels, biofuels, and biomass burning are based on inventories and routines provided by the Harvard University GEOS-Chem group. Individual sources are described below. The general approach for fossil fuel and biofuel emissions is to begin with a global inventory and overwrite particular regions where regional inventory data is available. Fossil fuel emissions are scaled from the inventory base year to the simulation year using scaling factors from the Harvard University GEOS-Chem group (''van Donkelaar et al.'', 2008). Biomass burning emissions use emission factors for boreal forest, tropical forest, and savanna/herb/other vegetation types, to convert Global Fire Emissions Database version 2 (GFEDv2) (Randerson, 2007; Van der Werf, 2006) carbon emissions to emissions of NOx, CO, or VOCs, using a carbon to dry matter ratio of 0.45. | ||
{| border="1" style="text-align:center, table centered" | |||
|+Global 2005 emission totals (Tg/yr): | |||
! Species !! Fossil Fuel !! Biofuel !! Biomass Burning !! Aircraft | |||
|- | |||
| NO | |||
| 52.5 | |||
| 4.8 | |||
| 11.4 | |||
| 1.2 | |||
|- | |||
| CO | |||
| 393 | |||
| 176 | |||
| 422 | |||
|} | |||
===NOx sources=== | ===NOx sources=== | ||
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*Global biofuel NOx emissions are from Yevich et al. (2003). These are overwritten with EPA/NEI 1999 biofuels over the United States. For years 2006 and later, biofuel emissions are zeroed over southeast Asia to avoid double counting because the 2006 inventory for southeast Asia does not separate fossil fuels and biofuels. | *Global biofuel NOx emissions are from Yevich et al. (2003). These are overwritten with EPA/NEI 1999 biofuels over the United States. For years 2006 and later, biofuel emissions are zeroed over southeast Asia to avoid double counting because the 2006 inventory for southeast Asia does not separate fossil fuels and biofuels. | ||
*NOx is emitted as NO. | *NOx is emitted as NO. | ||
===CO sources=== | ===CO sources=== | ||