GEOS-5 GMI Configuration for PIESA: Difference between revisions
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===NOx sources=== | ===NOx sources=== | ||
[[image: NOff_emiss.png|thumb|fossil fuel NO emissions]] | [[image: NOff_emiss.png|thumb|2005 fossil fuel NO emissions]] | ||
*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. | *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 3.2 inventory for 2000. The following regional inventories then overwrite the global inventory: | *Global NOx emissions from fossil fuels are from the EDGAR 3.2 inventory for 2000. The following regional inventories then overwrite the global inventory: | ||
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===CO sources=== | ===CO sources=== | ||
[[image: COff_emiss.png|thumb|fossil fuel CO emissions]] | [[image: COff_emiss.png|thumb|2005 fossil fuel CO emissions]] | ||
[[image: CObb_emiss.png|thumb|2005 biomass burning CO emissions]] | |||
*Global CO emissions from fossil fuels are from the EDGAR inventory for 2000. We impose a seasonal cycle north of 36 degrees N (except over China, where the inventory is already monthly), with emissions 10% higher during winter and 10% lower during summer, following Duncan et al. (2007). | *Global CO emissions from fossil fuels are from the EDGAR inventory for 2000. We impose a seasonal cycle north of 36 degrees N (except over China, where the inventory is already monthly), with emissions 10% higher during winter and 10% lower during summer, following Duncan et al. (2007). | ||
*The following regional inventories overwrite the global inventory for fossil fuel CO: | *The following regional inventories overwrite the global inventory for fossil fuel CO: | ||
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===VOC sources=== | ===VOC sources=== | ||
[[image: PRPEemis.png|thumb|2005 PRPE emissions]] | |||
*Global fossil fuel emissions of MEK, PRPE, C2H6, C3H8, and ALK4 come from GEOS-Chem's inventory for 1985 (Wang et al. 1998), based on speciation information from EPA. Annual scaling of VOC's uses the same scaling factors as CO. | *Global fossil fuel emissions of MEK, PRPE, C2H6, C3H8, and ALK4 come from GEOS-Chem's inventory for 1985 (Wang et al. 1998), based on speciation information from EPA. Annual scaling of VOC's uses the same scaling factors as CO. | ||
*The following regional inventories overwrite the global VOC emissions: | *The following regional inventories overwrite the global VOC emissions: | ||
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*Biofuel emissions of MEK, PRPE, C2H6, C3H8, ALK4, CH2O, and ALD2 come from Yevich et al. (2003). All species except CH2O are overwritten with EPA/NEI1999 biofuels over the US. 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. | *Biofuel emissions of MEK, PRPE, C2H6, C3H8, ALK4, CH2O, and ALD2 come from Yevich et al. (2003). All species except CH2O are overwritten with EPA/NEI1999 biofuels over the US. 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. | ||
*Some VOCs are lumped together. MEK includes ketones with >3 carbons, PRPE includes propene plus alkenes with at least 3 carbons, and ALK4 includes alkanes with at least 4 carbons. | *Some VOCs are lumped together. MEK includes ketones with >3 carbons, PRPE includes propene plus alkenes with at least 3 carbons, and ALK4 includes alkanes with at least 4 carbons. | ||
== Biogenic Emissions == | |||
The model calculates biogenic emissions of isoprene, monoterpene, and methyl butenol. Biogenic emissions are based on the MEGAN inventory (Guenther et al., 1995; Guenther et al., 1999; Guenther and Wiedenmeier, 2004). | |||
== References == | == References == | ||
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EPA/NEI: http://www.epa.gov/air/data/neidb.html | EPA/NEI: http://www.epa.gov/air/data/neidb.html | ||
Guenther, A., et al., A global model of natural volatile organic compound emissions, J.Geophys. Res., 100, 8873-8892, 1995. | |||
Guenther, A., B. Baugh, G. Brasseur, J. Greenberg, P. Harley, L. Klinger, D. Serca, and L. Vierling, Isoprene emission estimates and uncertanties for the Central African EXPRESSO study domain, J. Geophys. Res., 104, 30,625-30,639, 1999. | |||
Guenther, A., and C. Wiedinmyer, User's guide to Model of Emissions of Gases and Aerosols from Nature. http://cdp.ucar.edu. (Nov. 3, 2004) | |||
Randerson, J. T., G. R. van der Werf, L. Giglio, G. J. Collatz, and P. S. Kasibhatla, Global Fire Emissions Da tabase, Version 2 (GFEDv2.1), Data set, Available on-line from [http://daac.ornl.gov/ Oak Ridge National Laboratory] | Randerson, J. T., G. R. van der Werf, L. Giglio, G. J. Collatz, and P. S. Kasibhatla, Global Fire Emissions Da tabase, Version 2 (GFEDv2.1), Data set, Available on-line from [http://daac.ornl.gov/ Oak Ridge National Laboratory] | ||