Difference between revisions of "Aircraft emissions"

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== Overview ==
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This page describes the aircraft emissions inventories used by GEOS-Chem.
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== 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&deg; x 1&deg; 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&deg; x 1&deg; x 1 km, and the global source is 0.51 Tg N/yr.</blockquote>
  
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The source code for the aircraft NOx emissions inventory is <tt>aircraft_nox_mod.f</tt>.
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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)
  
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=== 02-Oct-2007 ===
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=== 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 ==
  
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From Park et al  
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From [http://acmg.seas.harvard.edu/publications/park2004.pdf ''Park et al'' <nowiki>[2004]</nowiki>]:
  
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Other anthropogenic sources of SO2 in the model
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<blockquote>Other anthropogenic sources of SO2 in the model include gridded monthly aircraft emissions (0.07 Tg S/yr)
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include gridded monthly aircraft emissions (0.07 Tg S yr�1)
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taken from ''Chin et al.'' [2000a] ...</blockquote>
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taken from Chin et al. [2000a]
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The aircraft emissions for SO2 are read from disk by routine <tt>READ_AIRCRAFT_SO2</tt> in module <tt>sulfate_mod.f</tt>.
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For more information about the data files, please see the following READMEs:
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# [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]
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# [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]
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# [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_2x2.5/sulfate_sim_200508/README GEOS_2x2.5/sulfate_sim_200508/README]
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# [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_4x5/sulfate_sim_200508/README GEOS_4x5/sulfate_sim_200508/README]
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# [ftp://ftp.as.harvard.eud/pub/gcap/data/GCAP_4x5/sulfate_sim_200508/README GCAP_4x5/sulfate_sim_200508/README] 
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--[[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.
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#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.
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#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]
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#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.
 
  
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--[[User:Bmy|Bob Y.]] 16:27, 25 February 2010 (EST)
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--[[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:

  1. GEOS_0.5x0.666_CH/aircraft_NOx_200202/README
  2. GEOS_2x2.5/aircraft_NOx_200202/README
  3. GEOS_4x5/aircraft_NOx_200202/README
  4. 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:

  1. GEOS_0.5x0.666_CH/sulfate_sim_200508/README
  2. GEOS_0.5x0.666_NA/sulfate_sim_200508/README
  3. GEOS_2x2.5/sulfate_sim_200508/README
  4. GEOS_4x5/sulfate_sim_200508/README
  5. GCAP_4x5/sulfate_sim_200508/README

--Bob Y. 16:45, 25 February 2010 (EST)

References

  1. 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.
  2. 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.
  3. 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.
  4. 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
  5. 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)

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