Aircraft emissions: Difference between revisions
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This page describes the aircraft emissions inventories used by GEOS-Chem. | |||
== NOx == | == NOx == | ||
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<blockquote>For NO emissions from subsonic aircraft, we adopted the 1992 monthly mean emisison inventory compiled by ''Baughcum et al'' [1996] and ''Metwally'' [1995]; the inventory has a resolution of 1° x 1° x 1 km, and the global source is 0.51 Tg N/yr.</blockquote> | <blockquote>For NO emissions from subsonic aircraft, we adopted the 1992 monthly mean emisison inventory compiled by ''Baughcum et al'' [1996] and ''Metwally'' [1995]; the inventory has a resolution of 1° x 1° x 1 km, and the global source is 0.51 Tg N/yr.</blockquote> | ||
The source code | The source code to read data from the aircraft NOx emissions inventory is <tt>aircraft_nox_mod.f</tt>. Routine <tt>READAIR</tt> reads the files from disk at the start of each new month, and routine <tt>AIREMISS</tt> interpolates from the 1km vertical grid to the GEOS-3, GEOS-4, GEOS-5, or GCAP vertical grid. | ||
For more information about the data files, please see the following READMEs: | For more information about the data files, please see the following READMEs: | ||
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--[[User:Bmy|Bob Y.]] 16:27, 25 February 2010 (EST) | --[[User:Bmy|Bob Y.]] 16:27, 25 February 2010 (EST) | ||
=== | === Known issues === | ||
Due to the [[Lightning_NOx_emissions#The common block bug fix|common block error described by Lee Murray]], in [[GEOS-Chem_versions_under_development#v7-04-13|GEOS-Chem v7-04-13]] we have added a new module array (EMIS_AC_NOx) to "aircraft_nox_mod.f". The EMIS_AC_NOx array will be referenced in routine "setemis.f", which will pass the aircraft NOx emissions to the SMVGEAR solver. The old common-block array "GEMISNOX" will be removed. | Due to the [[Lightning_NOx_emissions#The common block bug fix|common block error described by Lee Murray]], in [[GEOS-Chem_versions_under_development#v7-04-13|GEOS-Chem v7-04-13]] we have added a new module array (EMIS_AC_NOx) to "aircraft_nox_mod.f". The EMIS_AC_NOx array will be referenced in routine "setemis.f", which will pass the aircraft NOx emissions to the SMVGEAR solver. The old common-block array "GEMISNOX" will be removed. | ||
== SO2 == | == SO2 == | ||
From Park et al | From [http://acmg.seas.harvard.edu/publications/park2004.pdf ''Park et al'' <nowiki>[2004]</nowiki>]: | ||
Other anthropogenic sources of SO2 in the model | <blockquote>Other anthropogenic sources of SO2 in the model include gridded monthly aircraft emissions (0.07 Tg S/yr) | ||
include gridded monthly aircraft emissions (0.07 Tg S | taken from ''Chin et al.'' [2000a] ...</blockquote> | ||
taken from Chin et al. [2000a] | |||
The aircraft emissions for SO2 are read from disk by routine <tt>READ_AIRCRAFT_SO2</tt> in module <tt>sulfate_mod.f</tt>. | |||
For more information about the data files, please see the following READMEs: | |||
# [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_0.5x0.666_CH/sulfate_sim_200508/README GEOS_0.5x0.666_CH/sulfate_sim_200508/README] | |||
# [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_0.5x0.666_NA/sulfate_sim_200508/README GEOS_0.5x0.666_NA/sulfate_sim_200508/README] | |||
# [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_2x2.5/sulfate_sim_200508/README GEOS_2x2.5/sulfate_sim_200508/README] | |||
# [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_4x5/sulfate_sim_200508/README GEOS_4x5/sulfate_sim_200508/README] | |||
# [ftp://ftp.as.harvard.eud/pub/gcap/data/GCAP_4x5/sulfate_sim_200508/README GCAP_4x5/sulfate_sim_200508/README] | |||
--[[User:Bmy|Bob Y.]] 16:45, 25 February 2010 (EST) | |||
== References == | == References == | ||
#Baughcum, S.L., T.G. Tritz, S.C. Henderson, and D.C. Pickett, ''Scheduled civil aircraft emission inventories for 1992: Database development and analysis'', <u>NASA CR-4700</u>, Nat. Aeronaut. and Space Admin., Washington DC, 1996. | #Baughcum, S.L., T.G. Tritz, S.C. Henderson, and D.C. Pickett, ''Scheduled civil aircraft emission inventories for 1992: Database development and analysis'', <u>NASA CR-4700</u>, Nat. Aeronaut. and Space Admin., Washington DC, 1996. | ||
#Chin, M., P. Ginoux, S. Kinne, O. Torres, B. Holben, B. N. Duncan, R. V. Martin, J. A. Logan, A. Higurashi, and T. Nakajima, ''Tropospheric aerosol optical thickness from the GOCART model and comparisons with satellite and sunphotometer measurements'', <u>J. Atmos. Sci.</u>, '''59''', 461–483, 2002. | |||
#Metwally, M, ''Jet aircraft engine emissions database development--1992 military, charter, and nonscheduled traffic'', <u>NASA CR-4684</u>, Nat. Aeronaut. and Space Admin., Washington DC, 1995. | |||
#Park, R. J., D. J. Jacob, B. D. Field, R. M. Yantosca, and M. Chin, ''Natural and transboundary pollution influences on sulfate-nitrate-ammonium aerosols in the United States: implications for policy'', <u>J. Geophys. Res.</u>, '''109''', D15204, 10.1029/2003JD004473, 2004. [http://acmg.seas.harvard.edu/publications/park2004.pdf PDF] | #Park, R. J., D. J. Jacob, B. D. Field, R. M. Yantosca, and M. Chin, ''Natural and transboundary pollution influences on sulfate-nitrate-ammonium aerosols in the United States: implications for policy'', <u>J. Geophys. Res.</u>, '''109''', D15204, 10.1029/2003JD004473, 2004. [http://acmg.seas.harvard.edu/publications/park2004.pdf PDF] | ||
#Wang, Y., D.J. Jacob, and J.A. Logan, ''Global simulation of tropospheric O3-NOx-hydrocarbon chemistry, 1. Model formulation'', <u>J. Geophys. Res.</u>, '''103''', D9,10,713-10,726, 1998. [http://acmg.seas.harvard.edu/publications/wang1998a.pdf PDF] | #Wang, Y., D.J. Jacob, and J.A. Logan, ''Global simulation of tropospheric O3-NOx-hydrocarbon chemistry, 1. Model formulation'', <u>J. Geophys. Res.</u>, '''103''', D9,10,713-10,726, 1998. [http://acmg.seas.harvard.edu/publications/wang1998a.pdf PDF] | ||
--[[User:Bmy|Bob Y.]] 16: | --[[User:Bmy|Bob Y.]] 16:45, 25 February 2010 (EST) | ||
Revision as of 21:45, 25 February 2010
This page describes the aircraft emissions inventories used by GEOS-Chem.
NOx
The inventory of aircraft NOx used in GEOS-Chem is described in Wang et al [1998]:
For NO emissions from subsonic aircraft, we adopted the 1992 monthly mean emisison inventory compiled by Baughcum et al [1996] and Metwally [1995]; the inventory has a resolution of 1° x 1° x 1 km, and the global source is 0.51 Tg N/yr.
The source code to read data from the aircraft NOx emissions inventory is aircraft_nox_mod.f. Routine READAIR reads the files from disk at the start of each new month, and routine AIREMISS interpolates from the 1km vertical grid to the GEOS-3, GEOS-4, GEOS-5, or GCAP vertical grid.
For more information about the data files, please see the following READMEs:
- GEOS_0.5x0.666_CH/aircraft_NOx_200202/README
- GEOS_2x2.5/aircraft_NOx_200202/README
- GEOS_4x5/aircraft_NOx_200202/README
- GCAP_4x5/aircraft_NOx_200202/README
--Bob Y. 16:27, 25 February 2010 (EST)
Known issues
Due to the common block error described by Lee Murray, in GEOS-Chem v7-04-13 we have added a new module array (EMIS_AC_NOx) to "aircraft_nox_mod.f". The EMIS_AC_NOx array will be referenced in routine "setemis.f", which will pass the aircraft NOx emissions to the SMVGEAR solver. The old common-block array "GEMISNOX" will be removed.
SO2
From Park et al [2004]:
Other anthropogenic sources of SO2 in the model include gridded monthly aircraft emissions (0.07 Tg S/yr) taken from Chin et al. [2000a] ...
The aircraft emissions for SO2 are read from disk by routine READ_AIRCRAFT_SO2 in module sulfate_mod.f.
For more information about the data files, please see the following READMEs:
- GEOS_0.5x0.666_CH/sulfate_sim_200508/README
- GEOS_0.5x0.666_NA/sulfate_sim_200508/README
- GEOS_2x2.5/sulfate_sim_200508/README
- GEOS_4x5/sulfate_sim_200508/README
- GCAP_4x5/sulfate_sim_200508/README
--Bob Y. 16:45, 25 February 2010 (EST)
References
- Baughcum, S.L., T.G. Tritz, S.C. Henderson, and D.C. Pickett, Scheduled civil aircraft emission inventories for 1992: Database development and analysis, NASA CR-4700, Nat. Aeronaut. and Space Admin., Washington DC, 1996.
- Chin, M., P. Ginoux, S. Kinne, O. Torres, B. Holben, B. N. Duncan, R. V. Martin, J. A. Logan, A. Higurashi, and T. Nakajima, Tropospheric aerosol optical thickness from the GOCART model and comparisons with satellite and sunphotometer measurements, J. Atmos. Sci., 59, 461–483, 2002.
- Metwally, M, Jet aircraft engine emissions database development--1992 military, charter, and nonscheduled traffic, NASA CR-4684, Nat. Aeronaut. and Space Admin., Washington DC, 1995.
- Park, R. J., D. J. Jacob, B. D. Field, R. M. Yantosca, and M. Chin, Natural and transboundary pollution influences on sulfate-nitrate-ammonium aerosols in the United States: implications for policy, J. Geophys. Res., 109, D15204, 10.1029/2003JD004473, 2004. PDF
- Wang, Y., D.J. Jacob, and J.A. Logan, Global simulation of tropospheric O3-NOx-hydrocarbon chemistry, 1. Model formulation, J. Geophys. Res., 103, D9,10,713-10,726, 1998. PDF
--Bob Y. 16:45, 25 February 2010 (EST)