Carbon Cycle Working Group

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Revision as of 20:57, 14 April 2015 by Ray (Talk | contribs) (Development Priorities)

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All users interested in the GEOS-Chem carbon gas simulations (CO, CO2, CH4, etc.) are encouraged to subscribe to the carbon gases email list (click on the link in the contact information section below).

Contact information

Carbon Cycle Working Group Co-Chairs Ray Nassar, Kevin Bowman
Carbon Cycle Working Group email list geos-chem-carbon [at]
To subscribe to email list Send email to geos-chem-carbon-join [at]
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Current Carbon Cycle Projects (please add yours!)

Simulation User Group Description Contact Person Date Added
    Projects using CH4 simulations    
Methane U. Edinburgh Regional methane sources using surface in situ and GOSAT and IASI satellite observations and an ensemble Kalman filter Annemarie Fraser 10 Jun 2009
Methane Harvard Methane sources and sinks based on in situ and satellite observations Kevin Wecht 12 May 2011
Methane Harvard Inverse modeling of methane with GOSAT Alex Turner 7 May 2013
Methane Purdue University Methane sources in Pan-Arctic region Zeli Tan 26 Nov 2012
    Projects using CO and/or Tagged CO simulations    
Tagged CO U. Wollongong Source attribution of Australasian pollution Jenny Fisher 5 Nov 2012
Tagged CO Harvard Using tagged CO simulation to study transport in the UT/LS Junhua Liu 12 May 2011
Tagged CO JPL Using tagged CO simulations to interpret MLS observations Jianjun Jin 12 May 2011
Tagged CO
and full chemistry
Duke CO sources from biomass burning
(NOTE: Cross-listed under full-chemistry)
Prasad Kasibhatla 15 Jun 2009
Tagged CO U. Toronto Adjoint analysis of CO sources from MOPITT Zhe Jiang 09 Jun 2009
    Projects using CO2 simulations    
CO2 Caltech Source/sink estimation of CO2 using ground-based FTS observations Janina Messerschmidt 26 Sept 2011
CO2 IAP CAS Using GEOS-Chem and adjoint model for CO2 flux inversions ZhaoHui Chen 1 Jul 2011

CO2 U. Edinburgh Using GEOS-Chem for CO2 flux inversions James Barlow 12 May 2011
CO2/Tagged CO Harvard Using CO/CO2 correlations for CO2 inverse modeling Helen Wang 12 May 2011

CO2 Tsinghua U. Nested grid simulation to interpret surface CO2 observations Yuxuan Wang 12 May 2011
CO2 Environment Canada CO2 modeling and source/sink estimation Ray Nassar 11 Apr 2011
CO2 U. Edinburgh CO2 simulation and surface flux estimation by using Ensemble Kalman Filter Liang Feng 18 Aug 2010
CO2/CO Adjoint JPL Source/state estimation of CO2 and CO using atmospheric CO2/CO satellite observations Kevin Bowman 28 Jun 2010
CO2 U. Toronto Modeling CO2 and its sources and sinks with GEOS-Chem Dylan Jones 09 Jun 2009
CO2 IUP U. Bremen Study the CO2 and OCS relationship using ground-based FTS observations and GEOS-Chem Yuting Wang 17 May 2014

--Bob Y. 15:41, 25 April 2014 (EDT)

Recently Completed Projects (please add yours!)

Simulation User Group Description Contact Person Publication
Tagged CO Harvard Adjoint analysis of CO sources from MOPITT/AIRS/SCIAMACHY Monika Kopacz Atmos. Chem. Phys., 10, 855-876, 2010. PDF

--Bob Y. 15:40, 25 April 2014 (EDT)

Development Priorities

Priority Description Status
Update biospheric CO2 fluxes Currently based on CASA (neutral biosphere) output for one particular year and a climatology of net terrestrial exchange. Running with year-specific fluxes from the SiB3 biospheric model will be a new option. To be included in GEOS-Chem v10-01
Update anthropogenic CO2 fluxes Implement anthropogenic (fossil fuel combustion) CO2 emissions with higher temporal resolution and perhaps higher spatial resolution. To be included in GEOS-Chem v10-01
Update ocean CO2 fluxes Currently using Takahashi et al. (2009) which gives too weak of a global sink. Look into possibilities for scaling or improved ocean fluxes from another source. To be included in GEOS-Chem v10-01
Tagged CO simulation Improve treatment of secondary production of CO from VOC oxidation. Currently just scale emissions. Modify code to apply photochemical production rates archived from a full chemistry simulation.
CO-CO2-CH4 simulation Merge into a single offline simulation for the standard model.
Improved satellite diagnostic Implement more flexible diagnostic for saving out XCO2 and other satellite-relevant parameters.

--Melissa Payer 10:36, 10 June 2013 (EDT)

Recent updates

The following development items have recently been added to GEOS-Chem:

Version Released Description Contact
v9-02 Mar 2014 EDGAR v4.2 emissions for CH4 simulation Kevin Wecht (Harvard)

--Melissa Sulprizio 11:08, 17 January 2014 (EST)