GEOS–Chem at
Harvard Atmospheric Chemistry Modeling Group
Cambridge, MA

http://acmg.seas.harvard.edu/

Daniel Jacob
Professor

Jennifer Logan
Senior Research Fellow

Loretta Mickley
Senior Research Fellow

Elsie Sunderland
Assistant Professor, Harvard School of Public Health

Post-Doctoral Fellows
Raluca Ellis
Emily Fischer
Jenny Fisher
Junhua Liu
Fabien Paulot
Asif Qureshi
Mauricio Santillana
Lin Zhang

Graduate Students
Helen Amos
Bess Sturges Corbitt
Hannah Horowitz
Sungshik (Patrick) Kim
Shannon Koplitz
Eloise Marais
Lee Murray
Justin Parella
Amos P.K. Tai
Katherine Travis
Kevin Wecht
Moeko Yoshitomi
Qiaoqiao Wang
Lei Zhu
Peter Zoogman

GEOS-Chem Support Team
Bob Yantosca
Michael Long
Melissa Payer

We are applying GEOS–Chem to simulations of tropospheric ozone and related species, aerosols, mercury, carbon, and biogenic gases. We also drive GEOS–Chem with GISS–GCM meteorology for simulation of future and paleo climates. See our current research activities for details. We also support GEOS–Chem for the general benefit of its user community.

GEOS–Chem at
Harvard University Enviromental Chemistry Group
Cambridge, MA

http://www.seas.harvard.edu/environmental-chemistry/

Scot Martin
Professor

We are looking at the effect of aqueous versus crystalline sulfate-nitrate-ammonium tropospheric particles on global aerosol direct radiative forcing and atmospheric chemistry. In our first results, we find aerosol forcing of -0.750 W/m² when aerosol is assumed to follow the lower side of the hysteresis loop, which contrasts to -0.930 W/m² for the assumption of upper side behavior.

GEOS–Chem at
Harvard China Project
Cambridge, MA

http://chinaproject.harvard.edu

Michael B. McElroy
Chair, China Project

Post-Doctoral Fellows
Yu Zhao

Graduate Students
Xi Lu

We will use GEOS–Chem to validate Chinese emission inventories, and apply GEOS–Chem to understand the emissions and depositions of acid-related polluntants over China.

GEOS–Chem at
National Environmental Research Institute,
University of Aarhus
Denmark

http://www.neri.dk

Jesper Christensen
Senior Scientist

Henrik Skov
Principal Scientist

Graduate Students
Anne Laerke Soerensen

We work on the development of the slab-ocean model included in the mercury simulation to create a better representation of the air-sea exchange of mercury. Our focus is the marine boundary layer. This is done in cooperation with Elsie Sunderland, Harvard University .

GEOS–Chem at
University of Alberta
Edmonton, Alberta

http://www.engineering.ualberta.ca/ece/

Yaqiong Li

Our final task is to analyze CO2 emission in oil area (Alberta). Now we are trying to find out if satellite measurement of CO (from MOPITT,SCIAMACHY) could be used to better estimate surface flux of CO2 in inverse modelling.

GEOS–Chem at
Argonne National Laboratory
Illinois

http://www.anl.gov

David G. Streets
Senior Scientist

Post-Doctoral Fellows
Qiang Zhang

We will use GEOS-CHEM to validate and constraint emission inventories, and apply GEOS-CHEM to understand the emission and transport of air pollutants over China.

We are working in collaboration with Yuxuan Wang at Tsinghua University.

K.J. Liao
Environmental Science Division, Argonne National Lab

We are planning to use the model to develop chemical data assimilation using satellite, air and ground measurement data based on a global scale.

GEOS–Chem at
University of Bogota
Colombia

Astrid Bernal Baquero
Professor

Graduate Students
Freddy Grajales

I'm interested in using GEOS–Chem to infer surface concentrations of O3 and NO2 from OMI satellite observations.

GEOS–Chem at
University of Bremen
Germany

http://www.uni-bremen.de/forschung/institute/institut_en.html?pi_id=98

Theo Ridder
Ph.D. Student

I plan to work with the GEOS–Chem model for the interpretation of ground based remote sensing data.

GEOS–Chem at
California Institute of Technology
Pasadena, CA

John Seinfeld
Professor

Graduate Students
Joseph Ensberg
Havala (Taylor) Pye

The Seinfeld group focuses on improving the treatment of aerosols in GEOS–Chem. Studies include examining the effect of changes in climate and emissions on present-day and future aerosol levels.

http://www.che.caltech.edu/groups/jhs/research.shtml

Paul Wennberg
Professor

Post-Doctoral Fellows
Janina Messerschmidt

We have been working on isoprene photooxidation in an atmospheric chamber using a chemical ionization mass spectrometer. We would like to implement a more detailed version of isoprene photooxidation in GEOS–Chem to examine the effect on NOx transport and carboxylic acid formation.

Individual Projects:

Janina Messerschmidt: I plan to work with the GEOS–Chem model for the interpretation of ground based remote sensing CO2 data.

http://www.gps.caltech.edu/~wennberg/

GEOS–Chem at
University of California
Berkeley, CA

http://www.cchem.berkeley.edu/rccgrp/

Ron Cohen
Professor

Post-Doctoral Fellows
Rynda Hudman

Graduate Students
Ellie Browne

We are using observations of NO2 column densities from OMI interpreted with GEOS–Chem to constrain soil NOx emissions over the United States and globally. We are also implementing new methyl-peroxynitrate chemistry to examine impacts on Arctic chemistry.

GEOS–Chem at
University of California at Irvine

James Randerson
Professor

Project Scientists
Yang Chen
Mingquan Mu

Department of Earth System Science
Ecosystem Processes, Climate, and Human Activity Group

We are using GEOS-Chem to study the global carbon cycle, aerosols, and the impact of fires on tropospheric composition. We are continuing to develop the Global Fire Emissions Database (GFED) and to plan to integrate higher spatial and temporal resolution time series of fire emissions into the model over the next few years.

More details are available at: http://www.ess.uci.edu/~jranders/

Michael Prather
Professor

Post-Doctoral Fellow
Christopher Holmes

Department of Earth System Science
Atmospheric Sciences Group

We are using GEOS–Chem to study mercury cycling and to make multi-decadal projections of ozone and methane.

More details are available at: www.ess.uci.edu/~cdholmes/

GEOS–Chem at
University of California, Los Angeles

http://www.atmos.ucla.edu/~qli/trop/Home.html

Qinbin Li
Assistant Professor
(also appointed at JPL)

We are applying the GEOS–Chem model to interpret satellite retrievals and in-situ (aircraft) observations to understand precursor emissions, chemical processes, and transport that determine the global distributions of tropospheric ozone and aerosols.

GEOS–Chem at
Climate & Atmospheric Research Associates (CARA), LLC
Kentucky

http://www.carallc.net

T. W. Tesche
Founder

We are focusing on the linkage between global climate change and regional air quality in the eastern U.S. The specific focus entails whether regulatory efforts to attain the new 8-hr ozone NAAQS and the annual PM2.5 standards will be made more difficult as the result of climate change. We are also investigating the extent to which existing and proposed emissions reduction programs for green house gasses may assist or interfere with attempts to achieve the air quality standards for 8-hr ozone and PM 2.5 in specific eastern cities. Uncertainty analysis, particularly the impacts of uncertain future year emissions scenarios on modeled ozone and fine particulate, is also a key element of our research. We are employing GEOS-Chem, CMAQ, CAMx, SMOKE, and MEGAN in these investigations.

GEOS–Chem at
Carnegie–Mellon University
Pittsburgh, PA

http:/www.ce.cmu.edu/~adams/

Peter Adams
Professor

Graduate Students
Susanna Ehlers
Dan Westervelt
Anirban Roy

We are researching the aerosol indirect effect, developing global models of aerosol microphysics, and developing a size-resolved simulation of aerosol microphysics in the GEOS–Chem model.

Individual Projects:

Anirban Roy: My current research (with Prof. Peter Adams and Prof. Allen Robinson) is concerned with estimating the impact of biomass fires in the US, and how the reaction of levoglucosan, a tracer for biomass fire, causes current CMB models to underestimate the same.

GEOS–Chem at
Chinese Academy of Sciences
Beijing, China

Hong Liao
Professor

Zifa Wang
Professor

Graduate Students
Chuan-xi Liu

State Key Laboratory
of Atmospheric Boundary Layer Physics
and Atmospheric Chemistry
Institute of Atmospheric Physics

We are applying the GEOS–Chem to understand the formation and transport of air pollutants over China.

Liping Lei
Professor

Post-Doctoral Fellows
Xiuping Yan

Graduate Students
Shanshan Hou

Center for Earth Observation and Digital Earth

We plan to study aerosols emissions and transport model, and we also plan to study carbon cycling on global scale to improve understanding of global warming.

More details are available at: http://english.ceode.cas.cn/

GEOS–Chem at
City University of Hong Kong
China

Ka-Ming Wei
Honorary Research Fellow
Department of Biology and Chemistry

Department of Biology and Chemistry

We shall use the GEOS–Chem model to interpret ground, aircraft and satellite observations of tropospheric species (e.g. aerosol and trace gas compositions) to improve understanding of the relationship of emissons, transports and chemical transformations.

More details are available at: http://www.cityu.edu.hk/bch/

Mark Wenig
Assistant Professor

Graduate Students
Gerrit Kuhlmann
Zhang Zhenxi (Ross)

Air Quality Group
School of Energy and Environment

We shall use GEOS–Chem to develop a new top-down emission inventory for NOx and SO2 from satellite observations. Furthermore, we shall investigate the intra- and intercontinental transport of tropospheric trace gases and aerosols in order to understand their impact on regional air quality and climate in South East Asia.

More details are available at: http://www.cityu.edu.hk/see

GEOS–Chem at
University of Colorado
Boulder, CO

http://spot.colorado.edu/~henzed

Daven Henze
Assistant Professor

Graduate Students
Matthew Turner
Juliet (Liye) Zhu

We use GEOS-Chem to learn more about the sources and processes that govern distributions of criteria pollutants. We help lead development of the GEOS-Chem adjoint model and are involved in many aspects of chemical data assimilation and model sensitivity analysis.

GEOS–Chem at
Colorado State University
Fort Collins, CO

http://www.atmos.colostate.edu/~heald/

Colette Heald
Assistant Professor

Post-Doctoral Fellows
Kateryna Lapina
David Ridley

Graduate Students
Bonne Ford
Luke Schiferl

We use the GEOS–Chem model to interpret satellite, aircraft and in situ observations of tropospheric composition with a particular focus on (1) understanding the sources and budgets of aerosols and (2) investigating the mechanisms and impacts of long-range pollution transport.

GEOS–Chem at
CNR-Institute for Atmospheric Pollution Research
Rende, Italy

http://www.iia.cnr.it/

Teresa Lo Feudo

We plan to use GEOS–Chem to examine the intercontinental transport of air pollutants and other tracer gases and to provide reliable boundary conditions to a regional chemistry-transport model. Our current area of focus is mercury fate and transport particularly in the Mediterranean Basin.

GEOS–Chem at
Centre for Remote Imaging, Sensing and Processing (CRISP)
Singapore

http://www.crisp.nus.edu.sg

Santo Salinas
Research Scientist

Chew Boon Ning
Associate Scientist

We are using GEOS–Chem in the study of biomass burning in Southeast Asia and to improve satellite retrievals of aerosol in the region.

GEOS–Chem at
CSIC–Barcelona

http://www.iiqab.csic.es

Jordi Dachs
Research Scientist

We are using the GEOS–Chem model to study the transport, fate and sinks of persistent organic pollutants (POPs) at the global scale. This work allows getting a better understanding of the long-range atmospheric transport of pollutants and their impacts. Currently, we are focusing our study on the fate and transport of CBs and HCHs, but later on, the model will be applied to other chemicals such as PBDEs, PCDD/Fs and other semi-volatile organic compounds.

GEOS–Chem at
Dalhousie University
Halifax, Nova Scotia

Randall Martin
Associate Professor

Post-Doctoral Fellows
Nicolas Bousserez
Shailesh Kharol
Betty Croft

Graduate Students
Aaron van Donkelaar
Brian Boys
Sajeev Philip
Akhila Padmanabhan
Sara Torbatian

Research Associate
Matthew Coooper

GEOS–Chem Support Team
Matthew Coooper

We use the GEOS–Chem model to support the retrieval and interpretation of satellite observations of tropospheric composition in the context of in situ measurements.

More details are available at http://fizz.phys.dal.ca/~atmos/.

Jeffrey Pierce
Assistant Professor

We are using GEOS–Chem as a tool to help understand and improve our ability to predict aerosol number, size and composition in models.

More details are available at http://fizz.phys.dal.ca/~pierce/.

GEOS–Chem at
Duke University
Durham, NC

http://www.nicholas.duke.edu/people/faculty/prasad/research/research.html

Prasad Kasibhatla
Associate Professor

Graduate Students
Quanlin Li

In collaboration with
Jim Randerson (UC Irvine)

Our goal is to combine measurements with GEOS–Chem model results to derive a better understanding of the distributions of key tropospheric species and to elucidate the factors that control these distributions.

GEOS–Chem at
University of East Anglia
Norwich, UK

http://www.uea.ac.uk/env/

Parv Suntharalingam
RCUK Academic Fellow

We will use GEOS–Chem to investigate global atmospheric budgets and fluxes of carbon species.

GEOS–Chem at
École Polytechnique Montréal
Montreal, Quebec

http://www.ciraig.org/

Claude Belley
Research Fellow
Dept. of Chemical Engineering

Graduate Students
Pierre Olivier-Roy

Programming Staff
Gabriel Morin

GEOS–Chem has been selected to calculate the link between deposition flow and emission related to SOx , NOx and NHx — pollutants that are responsible for acidification in every part of the world.

GEOS–Chem at
University of Edinburgh
United Kingdom

http://www.geos.ed.ac.uk/research/eochem

Paul Palmer
Professor,
School of GeoSciences

Post-Doctoral Fellows
Liang Feng
Annemarie Fraser
Siegfried Gonzi
Catherine Hardacre
Stephan Matthiessen
Mark Parrington

Graduate Students
Anthony Bloom

Graduate Research Assistants
Rob Trigwell

Undergraduate Researchers
Eddy Barratt

We are primarily interested in how we can use aircraft, ground-based and satellite observations of chemical composition and inverse methods to further our understanding of tropospheric chemistry.

GEOS–Chem at
ENVIRON International Corporation
Novato, CA

http://www.environcorp.com/

Christopher Emery
Senior Manager

We are the developers and distributors of the publicly-available CAMx regional photochemical transport model (www.camx.com) and have been using GEOS–Chem products for a couple of years as a source of boundary conditions for annual simulations that we've performed for the regulator and regulated communities. We plan on using GEOS–Chem in-house to support CAMx modeling, as well as to perform research in the areas of intercontinental ozone and PM transport and chemistry.

One of our principals in the Novato office, Dr. Greg Yarwood, is co-developer of the Carbon Bond 2005 photochemical mechanism and has been involved in biogenic emission model development with Dr. Alex Guenther.

GEOS–Chem at
Environment Canada
Toronto, Ontario

http://www.ec.gc.ca/

Ray Nassar
Research Scientist

We are using GEOS–Chem for CO₂ modeling and source sink estimation with satellite and surface data.

GEOS–Chem at
Georgia Environmental Protection Division
Atlanta, GA

http://www.gaepd.org/

Tao Zeng
Data & Modeling Unit
Georgia EPD

We are using GEOS–Chem to generate the initial and boundary conditions for the CMAQ model for SIP modeling.

GEOS–Chem at
Georgia Institute of Technology
Atlanta, GA

http://apollo.eas.gatech.edu

Yuhang Wang
Associate Professor

Graduate Students
Yunsoo Choi

Our group is applying the GEOS–Chem model to analyze the sources and distributions of nonmethane hydrocarbons, oxygenated hydrocarbons, and halocarbons.  These trace gases are proxies for the anthropogenic and natural processes that control the chemical state of the atmosphere. Through this work we will understand better how these processes contributed to the changing trace gas composition of the troposphere in the past decade.

GEOS–Chem at
University of Hertfordshire
United Kingdom

http://strc.herts.ac.uk/cair/

Rong Ming Hu
Centre for Atmospheric and Instrumentation Research (CAIR), University of Hertfordshire

Our current research topic is atmospheric dynamics and air quality modelling in urban, regional and global scales. We will use GEOS–Chem to generate the boundary condition for regional models. We will use multi-scale models together with satellite measurements to advance our knowledge in air quality and climate change.

Dr. Xavier Francis
Research Fellow, University of Hertfordshire

My area of research is air pollution modeling, especially on tropospheric ozone. I am using CMAQ for my regional simulation studies. I plan to use boundary conditions from GEOS–Chem model for CMAQ runs.

GEOS–Chem at
Indian Space Research Organization / NRSC
Hyderabad, India

http://www.isro.org/isrocentres/nrsc.aspx

TR Kiran Chand
Scientist,
Forestry & Ecology Division,
National Remote Sensing Agency,
Dept. of Space,
Government of India

We plan on using GEOS–Chem to study columnar CO profiles over the Indian region. We are also very much interested in the long range transport of atmospheric pollutants from forest fires.

We are working in collaboration with NOAA-NGDC, Colorado and University of Maryland, USA on fire related issues.

GEOS–Chem at
International Institute of Earth System Science,
University of Nanjing, China

http://essi.nju.edu.cn/ (in Chinese)

Jing Chen
Professor
Department of Geography
and Program in Planning,
University of Toronto

Research Personnel
Hengmao Wang

Our group is led by Prof. Jing M. Chen at U. of Toronto. We are on building a China carbon tracker and plan to use GEOS–Chem as one of the atmospheric transport models.

GEOS–Chem at
Jet Propulsion Laboratory
Pasadena, CA

Web @ UCLA: http://www.atmos.ucla.edu/~qli/

Qinbin Li
Research Scientist
(also appointed at UCLA)

Post-Doctoral Fellows
Timothy Canty
Jianjun Jin
Nigel Richards
Li Zhang

Technical Staff
Kevin Bowman
Ming Luo
Greg Osterman
John Worden

We are applying the GEOS–Chem model to interpret satellite retrievals and in-situ (aircraft) observations to understand precursor emissions, chemical processes, and transport that determine the global distributions of tropospheric ozone and aerosols.

Individual Projects:

Jianjun Jin: My project is to study the long range transport of air pollution using satellite measurements and model simulations.

GEOS–Chem at
KNMI (Royal Netherlands Meteorological Institute)
De Bilt, Netherlands

http://www.knmi.nl/research/

Folkert Boersma
Research Scientist

We plan to use GEOS–Chem for the interpretation of satellite data; to estimate NOx/VOC emissions with satellite measurements, and to investigate tropospheric ozone changes. We are also very interested in comparing GEOS-Chem simulations to TM4/TM5 runs, also in the context of the above.

GEOS–Chem at
Korea Environment Institute
Seoul, South Korea

http://www.kei.re.kr/index_eng.jsp

Changsub Shim
Principal Investigator

We use GEOS–Chem to optimize the regional/global VOC emissions and predict future changes in greenhouse gases (GHG). GEOS–Chem will be used to link GCM and risk assessment models by which we can study current and future atmospheric environment and its impact on East Asia.

GEOS–Chem at
CETEMPS
University of L'Aquila, Italy

http://cetemps.aquila.infn.it

Gabriele Curci
Researcher

Our current activities are focused on the validation of the aerosol optical properties of GEOS–Chem. The main focus area is Europe and Northern Africa, since the aim is to provide reliable dust boundary conditions to a regional chemistry-transport model.

GEOS–Chem at
University of Leeds
United Kingdom

http://www.env.leeds.ac.uk/research/ias/composition

Mat Evans
NERC Research Fellow, University of Leeds, UK

Graduate Students
Helen Macintyre

I am interested in the oxidizing capacity of the atmosphere, how well it is understood and how it is changing. By using numerical models of the atmopshere we can attempt to answer these questions.

GEOS–Chem at
University of Leicester
United Kingdom

http://www.leos.le.ac.uk/group/

Prof. John Remedios
Department of Physics and Astronomy

Prof. Paul Monks
Department of Chemistry

Graduate Students
Vijay Kanawade
Sam Illingsworth

We will use GEOS–Chem carbon monoxide (CO) simulation results together with satellite retrieved CO data to examine CO source strengths and various transport processes.

Dr. Roland Leigh
Research Fellow:
UV/Vis Remote Sensing

Our initial objectives for GEOS–Chem are understanding of marine boundary layer measurements from recent camapaigns, and support of urban background concentration studies from 2010 onwards.

Dr. Michael Barkley
NERC Research Fellow
College of Science & Engineering

I will be using GEOS–Chem to study tropical BVOC emissions and oxidation chemistry.

GEOS–Chem at
University of Liège
Belgium

http://www.ago.ulg.ac.be/index_e.php

Emmanuel Mahieu
Senior Scientist
Institute of Astrophysics and Geophysics

System Administrator and Programmer
Olivier Flocke

Our main research focus will be to perform comparisons between GEOS–Chem simulations, time series of Jungfraujoch FTIR ground-based partial/total columns and space-based observations (e.g. from ACE–FTS); to help in data interpretation of long-term changes, of interannual and seasonal variability, to identify source regions. Likely targets are methanol, methyl chloride, methane, ethane, acetylene, hydrogen cyanide, carbonyl sulfide, isotopologues of carbon monoxide, methane. This is of course subject to evolve with time.

GEOS–Chem at
Massachusetts Institute of Technology
Cambridge, MA

Stephen Barrett
Assistant Professor

Research Associates
Hung Lam "Steve" Yim

We are using GEOS–Chem to assess the air quality impacts of aviation, especially the impact of aircraft cruise emissions on surface air quality.

More details are available at:http://web.mit.edu/aeroastro/

Colette Heald
Assistant Professor

Post-Doctoral Fellows
David Ridley

Graduate Students
Bonne Ford (at Colo. State U.)
Luke Schiferl

We use the GEOS–Chem model to interpret satellite, aircraft and in situ observations of tropospheric composition with a particular focus on (1) understanding the sources and budgets of aerosols and (2) investigating the mechanisms and impacts of long-range pollution transport.

More details are available at:http://cee.mit.edu/heald

Noelle Eckley Selin
Assistant Professor

Post-Doctoral Fellows
Carey Friedman

We use GEOS–Chem to investigate air pollution issues relevant to decision-making. Current areas of focus include present and future ozone and particulate matter and health impacts and mercury fate and transport. We are also developing a simulation of persistent organic pollutants in GEOS–Chem.

More details are available at: http://web.mit.edu/selingroup/

GEOS–Chem at
University of Michigan
Ann Arbor, MI

http://research.sph.umich.edu/index.php?g=7&s=research&r=49

Olivier Jolliet
UM School of Public Health

Graduate Students
Shanna Shaked
Cedric Wannaz

Our group is working on a simple global pollutant transport model to be used in life cycle assessment (to look at the health impacts of products over their whole life cycle). Our interest in GEOS–Chem is (1) to use the met fields from it to parameterize the averaged winds in our model, (2) to use it to evaluate our model results, and (3) to use it to estimate global transfer of secondary particulate matter and other pollutants altered by chemistry to provide as inputs for our model.

GEOS–Chem at
Michigan Technical University
Houghton, MI

http://www.geo.mtu.edu/geoschem/

Shiliang Wu
Assistant Professor

Graduate Students
David Faber

System Administrator and Programmer
Bob Page

Our research focus on the interactions among climate, atmospheric chemistry/air quality, and land use/land cover. We also use GEOS–Chem to examine the intercontinental transport of air pollutants and other tracer gases, in particular the continental outflow across the North Atlantic and those to the Arctic regions.

GEOS–Chem at
University of Minnesota
Minneapolis, MN

http://www.atmoschem.umn.edu

Dylan Millet
Assistant Professor

We apply GEOS–Chem to interpret satellite and in situ measurements of the troposphere, with a focus on biosphere-atmosphere exchange and organic chemistry in the atmosphere.

GEOS–Chem at
University of Montana
Missoula, MT

http://www.cas.umt.edu/chemistry/

Robert J. Yokelson
Professor

Graduate Students
Sheryl Akagi

Programming Staff
Joe Glassy

We plan on improving the biomass burning simulation in GEOS–Chem.

GEOS–Chem at
NASA/Langley Research Center
Hampton, VA

http://www.larc.nasa.gov/

T. Duncan Fairlie
Research Scientist

I am using GEOS-Chem to study mineral dust mobilization, intercontinental transport, deposition, and chemical transformation, and and use the model to interpret observations from satellite (e.g. CALIPSO), airborne and ground-based instruments.

GEOS–Chem at
National Institute of Aerospace
Hampton, VA

http://research.nianet.org./~hyl/

Hongyu Liu
Senior Research Scientist

Graduate Students
Yiqiang Zhang

We are using GEOS-Chem to study the radiative effects of aerosols and clouds on tropospheric chemistry, to examine the constraints from radionuclide tracers on transport and wet removal of trace gases and aerosols, and to characterize the vertical distribution as well as quantify the sources of tropospheric ozone over the Asian Pacific region.

GEOS–Chem at
National Institute for Environmental Studies
Tsukuba, Japan

http://www-lidar.nies.go.jp/~tanimoto/

Hiroshi Tanimoto
Group Leader

Programming Staff
Masaru Chiba

We plan to use GEOS–Chem to interpret surface, aircraft, ship, and satellite observations of tropospheric composition with a focus on emissions and transport that influence Asian air quality. We are also interested in the interaction of air quality with climate change in Asia.

GEOS–Chem at
National Observatory of Athens (NOA)
http://www.meteo.noa.gr

and
National and Kapodistrian University of Athens (NKUOA)
http://env.mg.uoa.gr/index.php?lang=en

Christos Giannakopoulos
Researcher at the Institute of Environmental Research and Sustainable Development (NOA)

Maria Tombrou
Associate Professor (NKUOA)

Ph.D. Candidates
Anna Protonotariou (NKUOA)
Kostas Varotsos (NKUOA/NOA)

Our research mainly focuses on the study of air pollution in regional and global scales. GEOS–Chem with nested-grid capabilities has so far been applied to study CO, O3 and other species over Europe. In addition, the coupling procedure of GEOS–Chem with UAM-V meso-scale chemistry model has been developed for Greece. Moreover, the global model was applied to assess the impact of aircraft emissions on O3 and NOx and to examine the N. American and Asian emissions’ contribution on European budget, as well as the European outflow towards the Eastern Mediterranean.

Current work efforts concentrate on the study of the distribution of CO, O3, NOx and aerosols over Europe and Greece, using the coupling of GEOS–Chem with CAMx, by providing BCs of 0.5x0.66 horizontal resolution to the meso-scale model. Moreover, climate change impacts, under the A1B emissions scenario, in European air-quality for the 2050 future period are assessed using the GEOS–Chem global transport model driven by meteorological fields from the GISS/GCM. We will focus in the possible responses of European air quality both due to climate change alone and due to the combined effects of climate change and changing future air pollution emissions.

GEOS–Chem at
University of Nebraska
Lincoln, NE

http://www.geosciences.unl.edu

Jun Wang
Assistant Professor

Jing Zeng
Research Assistant Professor

Graduate Students
Xiaoguang Xu

We are using GEOS–Chem in the following ways: (1) To study the effect of aerosol phase transition on heterogenous chemistry and the formation of ice clouds; (2) To interpret satellite observations of radiance of aerosols, with a focus on air quality applications, and (3) In conjunction with satellite observations, to study aerosol composition and distribution.

GEOS–Chem at
North Carolina State University
Raleigh, NC

http://www.meas.ncsu.edu/01-about.html

Nicholas Meskhidze
Principal Investigator

Graduate Students
Matthew Johnson

Collaborators
Patrick Chuang
Fabien Solmon
(at UCSC)

We are using GEOS–Chem to better quantify atmospheric transport and transformation of iron (Fe), its deposition to the surface ocean and the possible effect of anthropogenic pollution on fluxes of bioavailable Fe. We are particularly interested in the Southern Ocean, where iron availability for phytoplankton is shaped by where relative contribution of oceanic input of nutrient-rich waters from upwelling and atmospheric input from mineral dust emanating from the arid regions of South America and Australia.

GEOS–Chem at
University of North Carolina
Chapel Hill, NC

http://www.sph.unc.edu/envr/

William Vizuete
Principal Investigator

Graduate Students
Barron Henderson
Tom Roche

Our projects include:

Barron Henderson: The role of chemistry in upper troposphere NO2 under-predictions

Tom Roche: For my master's thesis I will incorporate a CO2 simulation into the CMAQ regional air-quality model. I am also interested in interfacing city/urban/regional "planning" models (i.e. UrbanSim) which focus on land use/land cover (LULC) into earth-system models.

GEOS–Chem at
Obukhov Institute of Atmospheric Physics
Moscow, Russia

http://www.zottoproject.org/science.html

Konstantin B. Moiseenko
Research Scientist

Anastasia V. Vasileva
Research Scientist

We plan to use the GEOS–Chem model to study effects of boreal wildfires on atmospheric composition in North Eurasia.

GEOS–Chem at
The Ohio State University
Columbus, OH

http://www.chemistry.ohio-state.edu/~allen/

Heather Allen
Principal Investigator

Graduate Researchers
Chris Beekman

We will be using the GEOS–Chem model to simulate the vertical distribution of trace gases under conditions of atmospheric pollution due to coal combustion. The simulated profiles will be used as part of the interpretation and inversion of ground based solar remote sensing measurements.

GEOS–Chem at
Peking University
Beijing, China

Tzung-May Fu
Research Professor
Dept. of Atmospheric and Oceanic Sciences
School of Physics

We use GEOS–Chem to study aerosols and organic gases in the troposphere, including their emissions from land and sea, transport, and chemical evolutions and impacts. Our particular focus is the effects on air quality and climate in Asia.

For more information, see: http://www.atmos.pku.edu.cn/

Yu Song
Professor
Dept. of Environmental Sciences

I plan to study emissions (using inverse modeling techniques) and transport from agriculture in China.

For more information, see: http://web5.pku.edu.cn/huanjing/

GEOS–Chem at
PRL (Physical Research Laboratory)
Navrangpura, Ahmedabad - 380 009, India

http://www.prl.res.in/

Timmy Francis
Graduate Student

Thesis Supervisor:
Prof. Manmohan Sarin

We primarily focus on applying GEOS–Chem to interpret our experimental results on the spatio-temporal variability in the atmospheric conversion efficiency of SO2 to SO4^2- and understand the relative importance of different parameters (eg. atmospheric dust, ozone, water vapor content, dry deposition rate) influencing this.

GEOS–Chem at
Laboratoire d'Aerologie, University Paul Sabatier
Toulouse, France

http://www.aero.obs-mip.fr/

Bastien Sauvage
Assistant Professor

We are using GEOS–Chem to study physical and chemical processes related to tropospheric ozone and its precursors, and to interpret in situ and satellite observations.

GEOS–Chem at
NOAA / GFDL and Princeton University
Princeton, NJ

http://www.gfdl.noaa.gov/~aff/

Arlene Fiore
Research Scientist

I am a research scientist in the Program of Atmospheric and Oceanic Sciences at Princeton University. GEOS–Chem is one of the modeling tools that I am using to examine the influence of changing biogenic emissions on background ozone

GEOS–Chem at
Princeton University
Princeton, NJ

Science, Technology, and Environmental Policy Program
Woodrow Wilson School of Public and International Affairs

http://www.princeton.edu/step/

Denise Mauzerall
Professor

Post-Doctoral Fellows
Monika Kopacz

We develop and use the GEOS–Chem adjoint model to study transport and sources of black carbon.

GEOS–Chem at
Portland State University
Portland, OR

http://physics.pdx.edu

Aslam Khalil
Professor

Chris Butenhoff
Adjunct Assistant Professor

Graduate Students
Aida Biberic
Doug Parsons

We are using GEOS–Chem to assess global trace gas inventories (such as methane), in particular to assess whether atmospheric measurements of trace gases can be used to discern differences between inventories.

GEOS–Chem at
Purdue University
West Lafayette, IN

http://www.purdue.edu/eas/ebdl

Qianlai Zhuang
Assistant Professor

Graduate Students
Jinyun Tang
Qing Zhu

At Purdue, we are coupling a biogeochemistry model of TEM with GEOS-Chem for investigating global methane cycle.  The study is supported by NASA.

We also plan on using satellite remote sensing of CO2 data. The higher spatial and temporal density remote sensing data has the potential to reduce the uncertainty of the atmospheric transport inversion modeling. We propose to use satellite level CO2 data to reduce the atmospheric transport chemistry model (GEOS–Chem) uncertainty from initial states and boundary condition of surface fluxes, which will finally constrain and improve our ecosystem model and further our knowledge about global carbon sources/sinks.

GEOS–Chem at
Seoul National University
Seoul, South Korea

http://airchem.snu.ac.kr/airchem/

Rokjin Park
Assistant Professor

Graduate Students
Jae-In Jeong

Our interests lie in regional air pollutions and interactions between climate and air chemistry over East Asia. We are using GEOS–Chem to examine regional aerosol distributions and their radiative forcing in East Asia. We also develop a linking tool to drive GEOS–Chem using CCSM3 outputs to study the impacts of future climate change on air chemistry and vice versa.

GEOS–Chem at
State University of New York
Albany, NY

http://www.albany.edu/~yfq/

Fangqun Yu
Research Associate

Graduate Students
Gan Luo

We are using GEOS–Chem to study the importance of new particle formation and growth in global aerosol abundance. Contribution of different nucleation mechanisms and emission of precursors from different sources will be investigated.

GEOS–Chem at
University of Science and Technology of China
Hefei, China

http://www.ustc.edu.cn/en/

Zhouqing Xie
Professor

I have used the MECCA box model to simulate the Hg-depletion in polar region which produced some new interesting results. To better unterstand the Hg distribution in the remote, coastal and polar region, I hope to apply GEOS–CHEM model to simulate the TGM and RGM incoprated with a new Hg mechanism.

GEOS–Chem at
University of Tennessee
Knoxville, TN

http://www.engr.utk.edu/civil/

Joshua Fu
Associate Professor

Graduate Students
Melissa Allen
Xinyi Dong

GEOS–Chem at
University of Texas
Austin, TX

http://www.utexas.edu/research/ceer/

Yosuke Kimura
Center for Energy and Environmental Resources

We plan to use GEOS–Chem to investigate the chemical mechanism fof isoprene. We plan on implementing the chemical mechanism of GEOS–Chem into small box models and for sensitivity analysis and chemical cycle analysis (how groups of key species propagates among each other, get terminated etc)

GEOS–Chem at
Research Center for Advanced Science and Technology
University of Tokyo, Japan

http://www.atmos.rcast.u-tokyo.ac.jp/index_e.htm

Yutaka Kondo
Professor

Mizuo Kajino
JSPS Fellow

We plan to use GEOS–Chem in the following ways:

1. To make lateral boundaries for regional-scale simulations.
2. To investigate how trace species are transported around the earth.

GEOS–Chem at
University of Toronto
Ontario

Dylan Jones
Assistant Professor

Research Associates
Michaela Heggelin
Mark Parrington

Graduate Students
Zhe Jiang
Jane Liu
Dave MacKenzie
Jing Wang

We are using GEOS–Chem to interpret recent satellite observations of trace gases in the troposphere, with a particular focus on understanding how pollution influences the composition of the lower atmosphere. Using inverse modeling and chemical data assimilation techniques, we seek to better quantify the surface emissions of precursors of O3 and other environmentally important trace gases and to obtained an improved understanding of how these gases are exported to the global atmosphere.

For more information, please see:
http://www.atmosp.physics.utoronto.ca/people/dbj/dbj.html

Jing Chen
Professor
Department of Geography
and Program in Planning

My research lab at University of Toronto plans to use GEOS–Chem for studies of global carbon flux inversion.

I am collaborating with the International Institute of Earth System Science at the University of Nanjing, China on the construction of a China carbon tracker. We have decided to use GEOS–Chem as one of the atmospheric transport models for this purpose.

For more information, please see:
http://faculty.geog.utoronto.ca/Chen/Chen's homepage/home.htm

GEOS–Chem at
Tsinghua University
Beijing, China

http://env.tsinghua.edu.cn/Eng/

Yuxuan Wang
Assistant Professor

Graduate Students
Libao Chai
Mingwei Li
Lulu Shen
Wang Xuan
Zhang Yuqiang

We will use GEOS–Chem to validate and constraint emission inventories, and apply GEOS–Chem to understand the emission and transport of air pollutants over China.

We will work in collaboration with Argonne National Laboratory.

GEOS–Chem at
Virginia Tech
Blacksburg, VA

http://people.cs.vt.edu/~asandu/

Adrian Sandu
Professor

Our focus is on creating an adjoint of the GEOS–Chem model.

GEOS–Chem at
University of Washington
Seattle, WA

http://www.atmos.washington.edu/

Becky Alexander
Assistant Professor

Graduate Students
Paul Hezel
Eric Sofen
Maria Zatko

My research involves incorporating oxygen isotope measurements into the GEOS–Chem model as a tracer of sulfur and nitrogen chemistry in the atmosphere. This can be used to better understand natural and anthropogenic influences on the oxidizing capacity of the atmosphere.

http://www.atmos.washington.edu/~beckya/

Lyatt Jaegle
Assistant Professor

Graduate Students
Maurizio Di Pierro
Yanxu Shang

Our focus is to quantify biomass burning emissions over Africa using GOME observations of NO2 and HCHO together with the GEOS–Chem model. We are also interested in understanding long-range transport of pollution from Asia to the Northeast Pacific with the GEOS–Chem model.

We are also examining the role of the ocean in the global mercury cycle and are modeling the wet deposition in the southeasten US with the high-resolution nested grid simulation.

http://www.atmos.washington.edu/~jaegle/research.html

Halstead Harrison
Emeritus Professor

I'm focusing on the comparison of Radon measurements and models at Mauna Loa and Bermuda.

GEOS–Chem at
University of Wollongong
New South Wales, Australia

http://www.uow.edu.au/science/research/cac/

Clare Murphy

Rebecca Buchholz

Chris Miller

Nicholas Deutscher

Nicholas Jones

David Griffith

We use GEOS–Chem to interpret trace gas observations made at Wollongong, as well as other sites in the TCCON and NDACC measurement networks.

We are currently interested in:

• Using NDACC data to constrain carbon cycle gases (OCS as a constraint for CO2, C2H6 for CH4).

• Simulating major Australian biomass burning events for validation of emission factors derived from our observations and those from satellites.

• The impact of long-range transport processes such as Asian Outflow on the chemical composition of the Southern Hemisphere.

• Validating satellite observations of tropospheric ozone precursors NO2 and HCHO in the Australasian region.

GEOS–Chem at
University of Wuppertal
Germany

http://www.physchem.uni-wuppertal.de/en/startseite.html

Yasin Elshorbany
Post-Doctoral Fellow

I am primarily concerned with tropospheric oxidation capacity and ozone photochemical formation. I intend to use the GEOS–Chem model to investigate the tropospheric oxidation chemistry on regional and global scales. In addition, I will also use GEOS–Chem to interpret satellite and ground-based measurements data in order to investigate emissions and pollution transport between different regions.

GEOS–Chem at
University of York
United Kingdom

http://www.york.ac.uk/depts/chem/

Peter Bernath
Professor, Dept. of Chemistry

Postdoctoral Fellows
Jeremy Harrison

Graduate Students
Nick Allen
Gonzalo Gonzáles Abad

Our group works with data from ACE (Atmospheric Chemistry Experiment), a Canadian-led satellite mission, with the purpose of looking at a wide range of organic trace chemical species. We plan to perform intercomparisons between the ACE data and the GEOS–Chem model.