OVERVIEW

The 3rd GEOS–Chem Users' Meeting was held from April 11–13, 2007 at Harvard University. It brought together over 140 scientists from 50 institutions and 12 countries. We are thankful to NASA/ACMAP, NSF/ATM, and the Harvard U. Committee on the Environment for their travel support.

• View the meeting agenda (PDF format)
• View the list of GEOS–Chem meeting attendees (PDF format)
• View photos from the GEOS–Chem meeting

NOTE: Documents will open in a separate browser window.

PRESENTATIONS

Wed Apr 11:  Model Overview | Global Tropopsheric Chemistry | Aerosols I | Aerosols II | Posters

Thu Apr 12:  Biomass Burning | VOC Emissions & C Fluxes | NOx Emiss & Chem | Mercury

Fri Apr 13:  Regional Air Quality | Intercontinental Transport | Working Group Reports

NOTE: Presentations (MS PowerPoint and PDF Documents) will open in a separate browser window.

Wednesday April 11, 2007

Model Overview (Daniel Jacob, chair)

• Welcome
  Daniel Jacob, Harvard University
  

• GEOS–Chem model: present state, future directions
  Daniel Jacob, Harvard University
  

• GEOS–Chem code: new developments
  Bob Yantosca, Harvard University
  

• GEOS–5 meteorological data, tracer transport
  Max Suarez and Steven Pawson, NASA/GMAO
  

• GEOS–Chem adjoint construction and long-term maintainability
  Adrian Sandu, Virginia Tech

Global Tropospheric Chemistry (Dylan Jones, chair)

• Status of global ozone and CO simulations
  Jennifer Logan, Harvard University
  

• Year-to-year variations in global OH radicals over the last 20-year period
  Isabelle Bey, EPFL
  

• Cross evaluation of OMI, TES, and GEOS–Chem tropospheric ozone
  Xiong Liu, CFA

• Simulation of TES ozone
  Ray Nassar, Harvard University
  

• Assimilation of TES observations
  Mark Parrington, University of Toronto

• Variability of upper tropospheric ozone and CO
  Chenxia Cai, JPL

• Impact of seasonal variations in long-range transport on tropospheric ozone
  Jane Liu, University of Toronto
  

• Dynamic tropopause and spatial reduction mechanism
  Philippe LeSager and Yevgenii Rastigeyev, Harvard University

• Adapting GEOS–Chem to Mars photochemistry
  Huiqun Wang, CFA
  

Aerosols I (Qinbin Li, chair)

• Global simulation of SO2 concentrations with updated emission inventory
  Gan Luo, SUNY Albany
  

• Coupling of sulfate aerosol with gas-phase precursors
  Daven Henze, Caltech
  

• Updates to fossil-fuel emissions and long-range transport of sulfur to Canada
  Aaron van Donkelaar, Dalhousie University
  

• Sensitivity of sulfate direct climate forcing to particle phase transitions
  Jun Wang, Harvard University
  

• Organic carbon aerosol: insight from recent field campaigns
  Colette Heald, UC Berkeley
  

• Global budget of glyoxal and methylglyoxal, and implication for SOA
  May Fu, Harvard University
  

• The effect of climate on secondary organic aerosols
  Havala Pye, Caltech

Aerosols II (Randall Martin, chair)

• Dust modeling and preliminary analysis of INTEX-B data
  Duncan Fairlie, NASA LaRC
  

• Modeling of soluble iron formation, transport and deposition to the Pacific
  Fabien Solmon, UC Santa Cruz
  

• Deriving PM2.5 speciation information using MISR data coupled with GEOS–Chem Yang Liu, Harvard School of Public Health
  

• Deriving AODs from MODIS radiances
  Easan Drury, Harvard University
  

• New particle formation in the global atmosphere
  Fangqun Yu, SUNY Albany
  

• Implementation of sulfate and sea-salt aerosol microphysics into GEOS–Chem
  Win Trivitayanurak, Carnegie-Mellon University
  

• Comparisons of Ozone and Aerosols in US and East Asia between 2001 and 2002 Joshua Fu, University of Tennessee

Poster Session

• Evaluating the global health impact of intercontinental transport of fine aerosols
  Junfeng Liu, Princeton University
  

• A regional aerosol modeling perspective on global models
  Scott Spak, University of Wisconsin
  

• A model study of ozone over Europe during the August 2003 heat wave
  Guergana Guerova, University of Wollongong
  

• Long range transport of ammonia from sugarcane cropping
  Guergana Guerova, University of Wollongong
  

• Air pollution radiative forcing from emission sectors: prototype for a new IPCC bar chart Nadine Unger, NASA/GISS
  

• Future trends in ozone exceedances over the Northeast United States
  Loretta Mickley, Harvard University
  

• Air quality degradation in future climate due to decreased cyclone frequency
  Eric Leibensperger, Harvard University
  

• Evaluation of GMI Combo model simulations with TES ozone data:
  indirect TES validation
  Jennifer Logan, Harvard University

• Evaluating model contributions to tropospheric ozone with aircraft data
  in factor-projected space
  Changsub Shim, JPL
  

• CMAQ modeling of China's regional air quality
  Dan Chen, Tsinghua University
  

• Evaluation of Tropospheric Aerosol Microphysics Simulations Using Observations
  Win Trivitayanurak, Carnegie-Mellon University
  

• Sea-salt aerosols: impact on air pollution of the Attica Peninsula Greece
  E. Athanasopoulou, National Observatory of Athens
  

• Influence of the city of Athens in the evolution of the sea-breeze front
  A. Dandou, National Observatory of Athens
  

• Influence of different PBL schemes on ozone predictions over the GAA
  E. Bossioli, National Observatory of Athens
  

• Comparison of the GMI Combo CTM with observations from the Aura period
  Duncan, Yoshida, Rodriguez, NASA/GSFC
  

• Source-receptor relationship of trans-Pacific transport of East Asian sulfate
  Junfeng Liu, Princeton University
  

• Processes driving ozone in the tropics and in the South Atlantic
  Bastien Sauvage, Dalhousie University

Thursday, April 12, 2007

Biomass Burning (Jennifer Logan, chair)

• Climate change, fires, and carbon aerosol over N. America
  Dominick Spracklen and Loretta Mickley, Harvard University
  

• Simulation of Australian bushfire season 2002/2003
  Guergana Guerova, University of Wollongong
  

• Evaluation of aerosol and CO vertical distributions from wild fires
  Sylvia Generoso, EPFL
  

• Dealing with injection height for biomass burning emissions
  Fok-Yan Leung, Harvard University
  

• Fire-driven interannual variability in CO, and SH seasonality of CO
  Prasad Kasibhatla, Duke University
  

• Global transport and radiative forcing of biomass burning aerosols
  Yang Chen, JPL
  

• Assimilation of TES data for biomass burning influence on tropospheric ozone
  Dylan Jones, University of Toronto

VOC Emissions and Carbon Fluxes (Prasad Kasibhatla, chair)

• Biogenic emissions from tropical ecosystems
  Michael Barkley, University of Edinburgh
  

• Biogenic emissions and VOC oxidation
  Gabriele Curci, University of L'Aquila
  

• OMI HCHO measurements to test isoprene emissions and land cover
  Dylan Millet, Harvard University
  

• Evolution of methane concentrations over the last 20 years
  Jerome Drevet, EPFL
  

• Analysis of AIRS CO2 and ozone retrievals
  Xun Jiang, JPL
  

• Improving estimates of CO2 fluxes through a joint CO–CO2 adjoint inversion
  Monika Kopacz, Harvard University
  

• Factors governing the seasonal variability of atmospheric carbonyl sulfide
  Parvadha Suntharalingam, Harvard University
  

• Acetylene-CO relationship and U.S. sources of ethane
  Yaping Xiao, University of New Hampshire

NOx Emissions and Chemistry (Isabelle Bey, chair)

• Constraining the magnitude and diurnal variation of NOx sources from space
  Folkert Boersma, Harvard University

• Surface nitrogen dioxide concentrations inferred from OMI
  Lok Lamsal, Dalhousie University
  

• Development of the bottom-up soil NOx inventory
  Neil Moore, Dalhousie University
  

• Constraints on lightning NOx emissions inferred from satellite observations
  Randall Martin, Dalhousie University
  

• Lightning NOx source emissions in GEOS–Chem
  Lee Murray, Harvard University
  

• Year-to-year variations in ozone and in satellite-derived NOx emissions
  Simos Koumoutsaris, EPFL
  

• U.S. influence on tropospheric ozone and the effects of recent emission reductions
  Rynda Hudman, Harvard University

Mercury (Lyatt Jaegle, chair)

• A biogeochemical model for mercury in GEOS–Chem
  Noelle Selin, Harvard University
  

• Transpacific transport of mercury
  Sarah Strode, University of Washington
  

• Discerning mercury-halogen chemistry
  Chris Holmes, Harvard University
  

• Incorporating a land surface model of terrestrial mercury storage
  Nicole Downey, Harvard University
  

• Ocean-atmosphere model linkages
  Elsie Sunderland, EPA

Friday, April 13, 2007

Regional Air Quality (Rokjin Park, chair)

• Nested grid application of GC over Europe
  A. Protonotariou, National Observatory of Athens
  

• Coupling GEOS–Chem with a regional air pollution model for Greece
  E. Bossioli, National Observatory of Athens
  

• Simulation of air pollutants over China
  Hong Liao, Chinese Academy of Sciences
  

• Sources of NOx and tropospheric O3 chemistry over Beijing
  Yuxuan Wang, Harvard University
  

• Sensitivity of surface O3 to soil NOx emissions
  Lyatt Jaegle, University of Washington
  

• Effects of 2000-2050 global change on ozone air quality in the United States
  Shiliang Wu, Harvard University
  

• Coupling of global-regional models for impact of climate change on air quality
  Daewon Byun, University of Houston

Intercontinental Transport (Daewon Byun, chair)

• Testable sensitivities of CTM simulations to meteorological fields
  Yuhang Wang, Georgia Tech
  

• HTAP multi-model assessment of ozone source-receptor relationships
  Arlene Fiore, NOAA/GFDL
  

• Intercontinental transport of air pollution
  Rokjin Park, Seoul National University
  

• Long-range transport of NOy and ozone from Asia
  Thomas Walker, Dalhousie University
  

• Analysis of MILAGRO/INTEX–B data
  Changshub Shim, JPL
  

• Transpacific transport of ozone pollution during INTEX-B
  Lin Zhang, Harvard University

• Long-range transport of black carbon to northern highlatitudes
  Qinbin Li, JPL

Working Group Summaries

• Emissions (Prasad Kasibhatla and Jennifer Logan, leads)
  
• Chemistry (Isabelle Bey and Yuhang Wang, leads)
  
• Aerosols (Rokjin Park and Fangqun Yu, leads)
  
• Regional Air Quality (Daewon Byun and Yuxuan Wang, leads)
  
• Inverse Modeling and Data Assimilation (Dylan Jones and Qinbin Li, leads)
  
• Mercury and Biogeochemistry (Lyatt Jaegle and Parv Suntharalingam, leads)