GEOS-Chem participation in community intercomparisons

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GEOS-Chem v11-02-final will also carry the designation GEOS-Chem 12.0.0. We are migrating to a purely numeric versioning system in order to adhere more closely to software development best practices. For a complete description of the new versioning system, please see our GEOS-Chem version numbering system wiki page.


On this page we provide information about the use of GEOS-Chem in community model intercomparison projects.

Table of intercomparisons using GEOS-Chem results

If you have used GEOS-Chem results in a model intercomparison study, we invite you to add your information to the table below.

Intercomparison Species Contributors G-C version
and resolution 		Simulation Years Data Availability References Comments
POLARCAT Model Intercomparison Gas phase species, including O3, CO, NO, NO2, PAN, HNO3, NOy, H2O, C2H6, C3H8, C2H2, acetone, acetaldehyde and OH Jingqiu Mao (NOAA/GFDL) 2008 Data submitted to archive.
  1. Arnold et al. (2014): Biomass burning influence on high latitude tropospheric ozone and reactive nitrogen in summer 2008: a multi-model analysis based on POLMIP simulations, Atmos. Chem. Phys. Discuss., 14, 24573-24621.
  2. Monks et al. (2014): Multi-model study of chemical and physical controls on transport of anthropogenic and biomass burning pollution to the Arctic, Atmos. Chem. Phys. Discuss., 14, 25281-25350.
 Simulations include a 1-year spin-up period (2007) and a full 12-month integration (Jan-Dec 2008) which will be used for comparison with long-term monthly-mean surface observations and satellite fields for 2008.
  • Anthropogenic and ship emissions - David Streets global emission dataset for 2008 (STREETS);
  • Biomass burning emissions: FINNv1 (Fire INventory from NCAR, version 1, from Christine Wiedinmyer) daily biomass burning emissions for 2008, based on MODIS fire counts.
AeroCom AOD and direct aerosol effect AOD, AAOD, and direct radiative forcing Xiaoyan Ma and Fangqun Yu (SUNY-Albany)
  • v8-03-02 with APM
  • GEOS-5
  • 4°x5° GMAO global grid
 2006 Data submitted to AeroCom in September 2011 and should be available at AeroCom web site at some point. Manuscript lead by Dr. Gunnar Myhre (CICERO) in preparation
  • AOD calculated online based on size, composition, and mixing state resolved particle properties simulated by APM.
  • Aerosol direct radiative forcing with and without anthropogenic emissions calculated with a recently incorporated radiative transfer module.
  • In the process of running the model at 2°x2.5° resolution and the 4°x5° simulations will be updated with 2°x2.5° results.
  • See this wiki page for information on APM microphysics.
AeroCom OA Organic aerosols Gabriele Curci (University of L'Aquila)
  • v8-02-02
  • GEOS-5
  • 2°x2.5° GMAO global grid
 2006 http://aerocom.met.no/data.html No references at the moment, activity in progress
  • Saharan dust emissions were reduced by a factor of 3 following Generoso et al. (JGR 2008).
  • A dedicated software was developed for conversion from GEOS-Chem binary format to AeroCom netCDF format (available on request).
  • Main model description (xls file)
  • See this wiki page for information on calculated optical properties.
AeroCom OA OC and SOA Gan Luo and Fangqun Yu (SUNY-Albany)
  • v8-02-02 with APM
  • GEOS-5
  • 2°x2.5° GMAO global grid
 2006 Data submitted to AeroCom in Jan 2011 and should be available at AeroCom web site at some point. Manuscript lead by Dr. Kostas Tsigaridis (NASA-GISS) in preparation
  • SOA formation based on an extended 2-product method considering oxidation aging.
  • See this wiki page for information on APM microphysics.
AeroCom Microphysics Particle size distributions Fangqun Yu and Gan Luo (SUNY-Albany)
  • v8-02-02 with APM
  • GEOS-5
  • 2°x2.5° GMAO global grid
 2006 Data submitted to AeroCom in Jan 2011 and should be available at AeroCom web site at some point. Manuscript lead by Dr. Graham Mann (Uni Leeds) in preparation
Hemispheric Transport of Air Pollution 2007 (HTAP) Ozone and its precursors, aerosols Rokjin J. Park (then Harvard University; now at Seoul National University)
  • v7-04-09,
  • GEOS-4
  • 2° x 2.5° GMAO global grid
 2001 http://www.htap.org (registration required)
  1. TF-HTAP, Hemispheric transport of air pollution 2007, United Nations, New York and Geneva, 2007
  2. Fiore, A. M., Dentener, F. J., Wild, O., Cuvelier, C., Schultz, M. G., Hess, P., Textor, C., et al., Multimodel estimates of intercontinental source-receptor relationships for ozone pollution, J. Geophys. Res., 114, D04301, doi:10.1029/2008JD010816, 2009.
TransCom CH4 intercomparison CH4, SF6, MCF, and radon Annemarie Fraser and Paul Palmer (U. of Edinburgh)
  • v8-01-01
  • GEOS-4/5
  • 2°x2.5° GMAO global grid
 1990-2007 (with two year spin up) See the project web page for data access instructions. ACP paper can be found here.
  • The intercomparison protocol can be found here.
Southern Hemisphere intercomparison CO, HCHO, and others? Jenny Fisher (U. of Wollongong)
  • v9-01-03
  • GEOS-5
  • 2°x2.5° GMAO global grid
 2003-2007 (may change) Still in planning phase. N/A
  • Still in planning phase.
Global Carbon Project - Methane CH4 fluxes Annemarie Fraser and Paul Palmer (U. of Edinburgh)
  • v8-01-01
  • GEOS-5
  • 2°x2.5° GMAO global grid
 2000-2010 Not available yet. Paper submitted to Nature Geosciences in April 2012.
  • No protocol - groups were asked to retrieve fluxes using their own preferred methods.
Add yours here!

--Bob Y. 11:30, 14 November 2011 (EST)

References

  1. Generoso, S., I. Bey, M. Labonne, and F.M. Bréon, Aerosol vertical distribution in dust outflow over the Atlantic: Comparisons between GEOS-Chem and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO), J. Geophys. Res., 113, D24209, doi:10.1029/2008JD010154, 2008.

--Melissa Payer 11:56, 10 November 2011 (EST)

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