The objective of the GEOS–Chem Working Groups (WG's) is to:

1. Foster communication between Working Group members for collaboration and sharing of information
2. Facilitate identification of model development priorities.

All GEOS–Chem users are invited to join the Working Group(s) that corresponds to their own particular area(s) of research. For more information, please contact the relevant Working Group Chair. Users are also encouraged to sign up for the relevant Working Group Email List(s).

The currrent GEOS–Chem Working Groups are:

Working Group	Chair(s)	Email List
Adjoint Model and Data Assimilation	Kevin Bowman Dylan Jones	geos-chem-adjointseas.harvard.edu
Aerosols	Colette Heald Jeffrey Pierce	geos-chem-aerosolsseas.harvard.edu
Carbon Gases and Organics	Dylan Millet Ray Nassar	geos-chem-carbonseas.harvard.edu
Chemistry–Climate	Hong Liao Loretta Mickley	geos-chem-climateseas.harvard.edu
Hg and POPs	Lyatt Jaeglé Noelle Selin	geos-chem-hg-popseas.harvard.edu
Oxidants and Chemistry	Mathew Evans Jingqiu Mao	geos-chem-oxidantsseas.harvard.edu
Nested Model	Yuxuan Wang Jun Wang	geos-chem-regionalseas.harvard.edu
Sources and Sinks	Randall Martin, Paul Palmer	geos-chem-emissionsseas.harvard.edu

Please also see the GEOS–Chem Steering Committee web page.