Steering Committee

Overview | Current Members | Meeting Minutes and Reports | Past Members

Overview

The charge of the GEOS-Chem Steering Committee (GCSC) is to:

  1. Develop long-term strategies for the model and for the functioning of the user community
  2. Prioritize and enable model development in consultation with the GEOS-Chem Working Groups (WGs)
  3. Review model benchmarks and monitor the integrity and traceability of the model.

GEOS-Chem Steering Committee membership is rotating and international. Members are personally invested in GEOS-Chem through their research. See the Functioning of the GEOS-Chem Steering Committee document for details on:

  • The role of the GEOS-Chem Steering Committee
  • The structure of the GEOS-Chem Steering Committee
  • The responsibilities of individual GEOS-Chem Steering Committee members
  • The requirements to serve on the GEOS-Chem Steering Committee
  • The process by which GEOS-Chem Steering Committee members are appointed

Current Members

Kelvin Bates

Kelvin Bates

University of Colorado Boulder (USA)

Co-Chair: Chemistry Working Group
Kevin Bowman

Kevin Bowman

Jet Propulsion Laboratory (USA)

Co-Chair: Carbon Cycle Working Group
Qi Chen

Qi Chen

Peking University (China)

Co-Chair: Aerosols Working Group
Sebastian Eastham

Sebastian Eastham

Imperial College London (UK)

GCHP Model Scientist &
Co-Chair: Stratospheric Working Group
Louisa Emmons

Louisa Emmons

National Center for Atmospheric Research (USA)

CESM Liaison
Jenny Fisher

Jenny Fisher

James Cook University (Australia)

Co-Chair: Hg and POPs Working Group
Tzung-May Fu

Tzung-May Fu

Southern University of Science and Technology (China)

WRF-GC Model Scientist
Jeff Geddes

Jeff Geddes

Boston University (USA)

Co-Chair: Surface-Atmosphere Exchange Working Group
Jessica Haskins

Jessica Haskins

University of Utah (USA)

Co-Chair: Chemistry Working Group
Barron Henderson

Barron Henderson

Environmental Protection Agency (USA)

Co-Chair: Chemistry Working Group
Daven Henze

Daven Henze

University of Colorado (USA)

Adjoint Model Scientist &
Co-Chair: Inverse Modeling and Data Assimilation Working Group
Chris Holmes

Chris Holmes

Florida State University (USA)

Co-Chair: Surface-Atmosphere Exchange Working Group
Hannah Horowitz

Hannah Horowitz

University of Illinois Urbana-Champaign (USA)

Co-Chair: Hg and POPs Working Group
Lu Hu

Lu Hu

University of Montana (USA)

Co-Chair: Chemistry Working Group
Daniel Jacob

Daniel Jacob

Harvard University (USA)

Co-Model Scientist
Lyatt Jaegle

Lyatt Jaeglé

University of Washington (USA)

Co-Chair: Emissions Working Group
Dylan Jones

Dylan Jones

University of Toronto (Canada)

Co-Chair: Carbon Cycle Working Group &
Co-Chair: Stratospheric Working Group
Hong Liao

Hong Liao

Nanjing University for Information Science & Technology (China)

Co-Chair: Chemistry-Climate Working Group
Ke Li

Ke Li

Nanjing University for Information Science & Technology (China)

GEOS-Chem Asia Community Liaison
Jintai Lin

Jintai Lin

Peking University (China)

Co-Chair: Emissions Working Group
Lizzie Lundgren

Lizzie Lundgren

Harvard University (USA)

Model Engineer &
Co-Chair: Software Engineering Working Group
Eloise Marais

Eloise Marais

University College London (UK)

Co-Model Scientist &
Co-Chair: Emissions Working Group
Randall Martin

Randall Martin

Washington University at St. Louis (USA)

Model Scientist
Lee Murray

Lee Murray

University of Rochester (USA)

GISS-GC Model Scientist &
Co-Chair: Chemistry-Climate Working Group
Jeffrey Pierce

Jeffrey Pierce

Colorado State University (USA)

Co-Chair: Aerosols Working Group
Will Porter

Will Porter

University of California, Riverside (USA)

Co-Chair: Aerosols Working Group
Zhen Qu

Zhen Qu

NC State University (USA)

Co-Chair: Inverse Modeling and Data Assimilation Working Group
Andrew Shuh

Andrew Schuh

Colorado State University (USA)

Co-Chair: Transport Working Group
Viral Shah

Viral Shah

NASA Global Modeling and Assimilation Office (USA)

GMAO Liaison
Melissa Sulprizio

Melissa Sulprizio

Harvard University (USA)

Model Engineer &
Co-Chair: Software Engineering Working Group
Amos Tai

Amos Tai

The Chinese University of Hong Kong (China)

Co-Chair: Surface-Atmosphere Exchange Working Group
Katherine Travis

Katherine Travis

NASA Langley Research Center (USA)

Co-Chair: Transport Working Group
Daniel Varon

Daniel Varon

MIT (USA)

Co-Nested Model Scientist
Pamela Wales

Pamela Wales

NASA Global Modeling and Assimilation Office (USA)

Co-Chair: Stratospheric Working Group
Bob Yantosca

Bob Yantosca

Harvard University (USA)

Model Engineer &
Co-Chair: Software Engineering Working Group
Lin Zhang

Lin Zhang

Peking University (China)

Co-Nested Model Scientist
Yanxu Zhang

Yanxu Zhang

Tulane University School of Science and Engineering (USA)

Co-Chair: Hg and POPs Working Group

Please also see the GEOS-Chem Working Groups page.


GEOS-Chem Steering Committee Meeting Minutes and Reports

Date Meeting Minutes Supplementary Documents
11 Jun 2026 Minutes GEOS-Chem Newsletter 2026, Issue 2
22 Jan 2026 Minutes GEOS-Chem Newsletter 2026, Issue 1
23 Sep 2025 Minutes GEOS-Chem Newsletter 2025, Issue 3
03 Jun 2025 Minutes GEOS-Chem Newsletter 2025, Issue 2
21 Jan 2025 Minutes GEOS-Chem Newsletter 2025, Issue 1
25 Sep 2024 Minutes GEOS-Chem Newsletter 2024, Issue 2
14 Jun 2024 Minutes -
31 Jan 2024 Minutes

Chemistry-Climate Working Group update
Hg and POPs Working Group update
Carbon Gases Working Group Update
Software Engineering Working Group Update
GEOS-Chem Newsletter 2024, Issue 1

19 Sep 2023 Minutes

Carbon Working Group update
Chemistry Working Group update
GEOS-Chem Newsletter 2023, Issue 2

26 Apr 2023 Minutes

Software Engineering Working Group update
Emissions Working Group update

18 Jan 2023 Minutes

Aerosols Working Group update
Stratospheric Working Group update
Hg and POPs Working Group update
GEOS-Chem Newsletter 2023, Issue 1

21 Sep 2022 Minutes

Surface-Atmosphere Exchange Working Group update
GEOS-Chem Newsletter 2022, Issue 2

10 Jun 2022 Minutes -
23 Feb 2022 Minutes

Chemistry WG updates
Transport WG updates
GCHP WG updates
GCHP mass fluxes update
Bashdatacatalog and cloud updates
GEOS-Chem Newsletter 2022 Issue 1

17 Nov 2021 Minutes

Data Assimilation and Adjoint WG updates
Emission and Deposition Update
Direct Reading of GMAO Meteorological Data
Tools for the cloud updates
GEOS-Chem Newsletter, Winter 2021 Edition

24 Aug 2021 Minutes

Hg and POPs WG updates
Chemistry-Ecosystems-Climate WG updates
GEOS-Chem Newsletter, Fall 2021 Edition

19 May 2021 Minutes

Aerosols WG updates
Software Engineering WG Updates
Carbon WG updates
GEOS-Chem Newsletter, Spring 2021 Edition

24 Feb 2021 Minutes Transport WG updates
Stratospheric WG updates
GCHP WG updates
18 Nov 2020 Minutes Emissions and Deposition WG updates
03 Sep 2020 Minutes -
27 May 2020 Minutes GEOS-Chem Newsletter, Spring 2020 Edition
11 Feb 2020 Minutes GEOS-Chem Newsletter, Winter 2020 Edition
04 Nov 2019 Minutes GEOS-Chem Newsletter, Fall-Winter 2019 Edition
07 Aug 2019 Minutes GEOS-Chem Newsletter, End-of-Summer 2019 Edition
09 May 2019 Minutes -
05 Mar 2019 Minutes GEOS-Chem Newsletter, Spring 2019 Edition
06 Dec 2018 Minutes GEOS-Chem Newsletter: End-of-Year 2018 Edition
11 Sep 2018 Minutes GEOS-Chem Newsletter: Fall 2018 Edition
04 Jun 2018 Minutes GEOS-Chem Support Team Report to the GCSC
22 Feb 2018 Minutes GEOS-Chem Support Team Report to the GCSC
30 Nov 2017 Minutes GEOS-Chem Newsletter: Winter 2017 Edition
GEOS-Chem: Looking Ahead
An introduction to NetCDF diagnostics in GEOS-Chem
NetCDF diagnostic validation in GEOS-Chem Classic
07 Sep 2017 Minutes GEOS-Chem Newsletter: Fall 2017 Edition + v11-01 Public Release
04 May 2017 Discussion at IGC8 -
09 Feb 2017 Minutes GEOS-Chem Newsletter: Winter 2017 Edition + v11-01 Public Release
Model Engineer's Report to the GCSC
04 Nov 2016 Minutes GEOS-Chem Newsletter: Fall 2016 Edition
19 Aug 2016 Minutes GEOS-Chem Newsletter: Summer 2016 Edition
16 May 2016 Minutes GEOS-Chem Newsletter: Spring 2016 Edition
03 Feb 2016 Minutes GEOS-Chem Newsletter: Winter 2016 Edition
13 Nov 2015 Minutes GEOS-Chem Newsletter: Fall 2015 Edition
10 Aug 2015 Minutes GEOS-Chem Newsletter: Summer 2015 Edition
07 May 2013 Discussion at IGC7 -
03 Mar 2015 Minutes GEOS-Chem Newsletter: Spring 2015 Edition
05 Dec 2014 Minutes GEOS-Chem Newsletter, Winter 2014 Edition
28 Aug 2014 Minutes GEOS-Chem Newsletter, Fall 2014 Edition
05 Jun 2014 Minutes GEOS-Chem Newsletter, Summer 2014 Edition
04 Mar 2014 Minutes -
17 Dec 2013 Minutes GEOS-Chem Newsletter, Year-End 2013 Edition
17 Sep 2013 Minutes GEOS-Chem Newsletter, Summer-Fall 2013 Edition
09 May 2013 Discussion at IGC6 -
12 Apr 2013 Minutes GEOS-Chem Newsletter, Spring 2013 Edition
08 Jan 2013 Minutes GEOS-Chem Newsletter, Winter 2013 Edition
04 Oct 2012 Minutes GEOS-Chem Newsletter, Summer-Fall 2012 Edition
23 May 2012 Minutes GEOS-Chem Newsletter, Spring 2012 Edition
15 Feb 2012 Minutes GEOS-Chem Newsletter: Winter 2012 Edition
09 Nov 2011 Minutes GEOS-Chem Newsletter: Fall 2011 Edition
02 Aug 2011 Minutes GEOS-Chem Newsletter: Summer 2011 Edition
05 May 2011 Discussion at IGC5 -
25 Jan 2011 Minutes GEOS-Chem Newsletter: Winter 2011 Edition
21 Sep 2010 Minutes -
29 Jun 2010 Minutes GISS Model E Memo (Lee Murray) [PDF]
09 Mar 2010 Minutes -
08 Dec 2009 Minutes [PDF] -
10 Sep 2009 Minutes -
10 Jun 2009 Minutes -

Past Members

We are grateful to the following individuals for their prior service on the GEOS-Chem Steering Committee.

Peter Adams Aerosols WG Co-Chair 2015-2017
Becky Alexander Aerosols WG Co-Chair 2017-2025
Mat Evans Chemistry WG Co-Chair 2009-2024
Emily Fischer Chemistry WG Co-Chair 2013-2021
Colette Heald Aerosols WG Co-Chair 2009-2021
Prasad Kasibhatla GMAO Liaison
Member at Large
2009-2024
Christoph Keller GMAO Liaison 2017-2024
Emma Knowland Transport WG Co-Chair 2024
Hongyu Liu Chemistry-Climate WG Co-Chair 2015-2021
Mike Long High Performance WG Co-Chair 2015-2017
Jingqiu Mao Chemistry WG Co-Chair 2011-2015
Loretta Mickley Chemistry-Climate WG Co-Chair 2011-2013
Dylan Millet Organics WG Co-Chair 2009-2023
Andrew Molod GMAO Liaison
Transport WG Co-Chair
2013-2022
Ray Nassar Carbon Gases WG Co-Chair 2011-2015
Clara Orbe Transport WG Co-Chair 2022-2023
Paul Palmer Sources and Sinks WG Co-Chair 2011-2013
Rokjin Park Regional Air Quality WG Co-Chair 2009-2011
Steven Pawson GMAO Liaison
Transport WG Co-Chair
2009-2017
Noelle Selin Hg & POPs WG Co-Chair 2011-2015
Susan Strahan Stratosphere WG Co-Chair 2019-2021
Max Suarez GMAO Liaison 2009-2011
Elsie Sunderland Hg & POPs WG Co-Chair 2011-2015
Jun Wang Adjoint Model & Data Assimilation WG Co-Chair 2011-2026
Yuxuan Wang Nested Model Scientist
Regional Air Quality WG Co-Chair
2009-2024
Shiliang Wu Chemistry-Climate WG Co-Chair 2013-2017
Fangqun Yu Aerosols WG Co-Chair 2017-2025
Qiang Zhang Sources & Sinks WG Co-Chair 2013-2017