Carbon Cycle Working Group

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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
Carbon Cycle Working Group email list geos-chem-carbon [at] g.harvard.edu


To subscribe to email list Either
  • Send an email to geos-chem-carbon+subscribe [at] g.harvard.edu

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--Bob Y. (talk) 16:37, 21 August 2015 (UTC)

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 Purdue University Methane sources in Pan-Arctic region Zeli Tan 26 Nov 2012
Methane Harvard Inverse modeling of methane with GOSAT Alex Turner 7 May 2013
Methane Harvard Improved methane simulation (Gridded EPA inventory, JPL wetland emissions, CH4 + Cl sink) Bram Maasakkers
Melissa Sulprizio
Yuzhong Zhang
4 May 2017
    Projects using CO and/or Tagged CO simulations    
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 UEA 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
CO2/CH4/CO U. Wollongong Joint simulation and source/sink estimation based on remote sensing and in situ (fixed and moving platforms) measurements in Australia Beata Bukosa 13 April 2017
CO2 FSU Arctic CO2 transport and surface fluxes Chris Holmes Kelly Graham May 2017

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. Work completed and described in Fisher et al., submitted to GMDD April 2017. To be included in v11-02 or later.
CO-CO2-CH4 simulation Merge into a single offline simulation for the standard model. In Development Beata Bukosa
Improved satellite diagnostic Implement more flexible diagnostic for saving out XCO2 and other satellite-relevant parameters.

--Melissa Payer 10:36, 10 June 2013 (EDT) --Updated by Ray Nassar 2015 April 14, 16:58 (EDT)

Recent updates

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

Version Released Description Contact
v10-01 Jun 2015 Simple Biosphere (SiB3) model balanced biosphere fluxes (2006-2010) for CO2 simulation, implemented via HEMCO Ray Nassar (Environment Canada)
v10-01 Jun 2015 Scaled Takahashi et al. (2009) Ocean CO2 fluxes for 2000-2013 for CO2 simulation, implemented via HEMCO Ray Nassar (Environment Canada)
v10-01 Jun 2015 ODIAC v2013 national fossil fuel combustion emissions for 2000-2014 for CO2 simulation, implemented via HEMCO Ray Nassar (Environment Canada)
v10-01 Jun 2015 TIMES weekly and diurnal fossil fuel temporal scaling factors for CO2 simulation, implemented via HEMCO Ray Nassar (Environment Canada)
v10-01 Jun 2015 Extended time range for CDIAC, chemical CO2 source, shipping and aviation scale factors for CO2 simulation, implemented via HEMCO Ray Nassar (Environment Canada)
v10-01 June 2015 The HEMCO emissions component now handles all emissions in GEOS-Chem v10-01 and higher versions. Christoph Keller (fmr Harvard)
GCST
v9-01 Mar 2014 EDGAR v4.2 emissions for CH4 simulation Kevin Wecht (Harvard)

--Bob Yantosca (talk) 15:38, 23 February 2016 (UTC)

The following development items will soon be added to GEOS-Chem:

Version Released Description Contact
v11-01 TBD 2016 The FlexChem chemical solver will completely replace SMVGEAR. All full-chemistry simulations going forward will use FlexChem (which is based on the KPP solver package). Mike Long (Harvard)
GCST

--Bob Yantosca (talk) 15:38, 23 February 2016 (UTC)