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 GFED2 carbon emissions to emissions of NOx, CO, or VOCs.

===NOx sources===

*Aircraft NOx: Steven Baughcum provided aircraft emissions of NOx for 1995 on a 1x1 degree grid with 1 km vertical resolution. We then vertically regridded the aircraft data to the GEOS5 vertical grid using a routine from the Harvard GEOS-Chem group.

*Global NOx emissions from fossil fuels are from the EDGAR inventory for 2000. The following regional inventories then overwrite the global inventory:

**EPA/NEI 2005 over the United States, with seasonality from the VISTAS inventory

**CAC 2002 and 2005 over Canada: 2002 for years 2002 and earlier, 2005 for years 2005 and later, and interpolated between the 2002 and 2005 inventory for 2003 and 2004

**BRAVO over northern Mexico

**year-specific EMEP over Europe

**Streets et al. (2003) inventory for 2000 with seasonality from the 2004 inventory over southeast Asia for years prior to 2006; Zhang et al. (2009) inventory for 2006 over southeast Asia for 2006 and later

*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.

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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 GFED2 carbon emissions to emissions of NOx, CO, or VOCs.
+===NOx sources===
+*Aircraft NOx: Steven Baughcum provided aircraft emissions of NOx for 1995 on a 1x1 degree grid with 1 km vertical resolution.  We then vertically regridded the aircraft data to the GEOS5 vertical grid using a routine from the Harvard GEOS-Chem group.
+*Global NOx emissions from fossil fuels are from the EDGAR inventory for 2000.  The following regional inventories then overwrite the global inventory:
+**EPA/NEI 2005 over the United States, with seasonality from the VISTAS inventory
+**CAC 2002 and 2005 over Canada: 2002 for years 2002 and earlier, 2005 for years 2005 and later, and interpolated between the 2002 and 2005 inventory for 2003 and 2004
+**BRAVO over northern Mexico
+**year-specific EMEP over Europe
+**Streets et al. (2003) inventory for 2000 with seasonality from the 2004 inventory over southeast Asia for years prior to 2006; Zhang et al. (2009) inventory for 2006 over southeast Asia for 2006 and later
+*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.