Presentations and Posters

Mon 04 May 2015: Model Overview | GEOS-Chem Working Groups | Aerosol Chemistry and Microphysics | GEOS-Chem Model Clinics | Model Overview | Monday Posters
Tue 05 May 2015: Chemistry-Climate | Carbonaceous Aerosols | Carbon Cycle & Organics | Tuesday Posters
Wed 06 May 2015: Mercury and Persistent Organic Pollutants | Regional and Global Air Quality | Sources and Sinks | Wednesday Posters
Thu 07 May 2015: Tropospheric Ozone | Nitrogen Cycle

Monday, May 4

Model Overview (Yuhang Wang, Georgia Tech, Chair)

• Welcome (Daniel Jacob, Harvard and Randall Martin, Dalhousie)
• GEOS-Chem model overview (Daniel Jacob, Harvard)
• GEOS-Chem adjoint model overview (Daven Henze, U. Colorado–Boulder)
• GEOS-Chem Support Team activities (Bob Yantosca, Harvard)
• HEMCO emissions module (Christoph Keller, Harvard)
• GEOS-Chem in massively parallel and ESM (GMAO) implementation (Michael Long, Harvard)
• GMAO activities (Steven Pawson, NASA/GMAO)
• GEOS-5 CTM with GEOS-Chem chemistry module (Andrea Molod, NASA/GMAO)
• Accelerated chemical kinetics for GEOS-Chem with KPPA (John Linford, ParaTools, Inc.)

GEOS-Chem Working Groups (Colette Heald, MIT, Chair)

• Aerosols Working Group (Jeff Pierce, Colorado State U.)
• Carbon Cycle Working Group (Ray Nassar, Environment Canada)
• Chemistry - Climate Working Group (Hong Liao, Chinese Academy of Sciences)
• Data Assimilation and Adjoint Working Group (Dylan Jones, U. Toronto)
• Hg and POPs Working Group (Noelle Selin, MIT)
• Organics Working Group (Dylan Millet, U. Minnesota)
• Oxidants and Chemistry Working Group (Mathew Evans, U. York)
• Nested Working Group (Lin Zhang, Peking U.)
• Sources and Sinks Working Group (Qiang Zhang, Tsinghua)

Aerosol Chemistry and Microphysics (Fangqun Yu, SUNY-Albany, Chair)

• Ammonia variability over the US and its influence on inorganic particulate matter (Luke Schiferl, MIT)
• Aerosol microphysics at high spatial resolution (Peter Adams, CMU)
• Processes controlling the seasonal cycle of Arctic aerosol size and number (Betty Croft, Dalhousie)
• Estimation of relative influences of emissions on cloud droplet number concentration (Shannon Capps, U. Colorado–Boulder)
• Impact of large emissions reductions on fine particulate matter sensitivities to precursors (Jareth Holt, MIT)
• Effects of size resolved aerosol microphysics on photochemistry and heterogeneous chemistry (Gan Luo, SUNY-Albany)
• MOSAIC: A flexible new aerosol model for GEOS-Chem (Sebastian Eastham, MIT)

Photochemistry (Becky Alexander, U. Washington, Chair)

• How accurate are the kinetics we rely on? (Ben Newsome, U. York)
• Process-oriented attribution of tropospheric OH variability using a space-based proxy and GEOS-Chem (Lee Murray, NASA GISS / LDEO)
• Isoprene nitrate chemistry in the Southeast US: Constraints from GEOS-Chem & SEAC4RS (Jenny Fisher, U. Wollongong)
• Halogen chemistry in GEOS-Chem: Accounting for elevated BrO levels (Johan Schmidt, Harvard)
• Sensitivity of radiative effect to chemistry (Barron Henderson, U. Florida)
• Very Short-Lived Halogens over the Western Pacific (Robyn Butler, U. Edinburgh)
• Iodine's impact on tropospheric oxidants (Tomás Sherwen, U. York)
• Impact of ozone photochemistry at the air-water interface using the global chemical transport model (GEOS-Chem) (Jun Wang for Cui Ge, U. Nebraska-Lincoln)

GEOS-Chem Model Clinics

• Clinic 1: GEOS-Chem for beginners (Melissa Sulprizio, Harvard and Junwei Xu, Dalhousie)
• Clinic 2: GEOS-Chem for intermediate/advanced users and HEMCO (Bob Yantosca and Christoph Keller, Harvard)
• Clinic 3: GEOS-Chem in massively parallel and ESM environments, GEOS-5 CTM (Michael Long, Harvard and Andrea Molod, NASA GMAO)
• Clinic 4: GEOS-Chem adjoint (Daven Henze, U. Colorado-Boulder)

Posters

• Plume-scale sulfur chemistry and aerosol physics in GEOS-Chem (Jeff Pierce, Colorado State U.)
• Improving aerosol scavenging in global models (Jess Kunke, Harvard)
• Australian dust Transport (Jesse Greenslade, U. Wollongong)
• Improving modeling of sulfate aerosols during the January 2013 haze episode in North China: Model evaluation and sensitivity study (Meng Gao, U. Iowa)
• Evaluating predicted AOD over the Middle East (Nick Hoffman, MIT)
• Examination of sulfate aerosol formation over Southern Ocean (Qianjie Chen, U. Washington)
• Comparison of GEOS-Chem aerosol optical depth with AERONET and MISR data over the contiguous United States (Shenshen Li, Chinese Academy of Sciences)
• Summer particulate matter simulation in China with high resolution nested GEOS-Chem model (Yu Yao, Tsinghua)
• Weathering of soil in semi-infinite atmospheric environment (J Rajaraman, AMET U., India)
• Improving East Asian dust emission by accounting for subgrid wind variability and implicit geomorphic dependence (Amos Tai, Chinese U. Hong Kong)
• Asian tropopause aerosol layer - observations, simulated composition and source apportionment with GEOS-Chem (Hongyu Liu for Duncan Fairlie, NASA Langley)
• Recent revisions to isoprene photooxodation chemistry based on Caltech chamber experiments (Kelvin Bates, Caltech)
• Global sensitivity of modeled ozone and HOx concentrations and production using the Morris Method (Kenneth Christian, Penn State)
• Bonds: a new way of thinking about ozone production (Mat Evans, U. York / NCAS)
• Spectral decomposition of ozone variability (Dene Bowdalo, U. York)
• Trend and interannual variability of surface ozone in Europe during 1990-2010 (JinXuan Chen, Peking U.)
• Interannual variations and trends of tropospheric ozone over Japan since 2002 (Kohei Ikeda, NIES Japan)
• Drivers of decadal variability in JJA ozone concentration in the United States (Lu Shen, Harvard)
• Use of GEOS-Chem for the interpretation of long-term FTIR measurements at Jungfraujoch (Manu Mahieu, U. Liege)
• Ozone, reactive nitrogen, and aerosol evolution in biomass burning plumes (Matt Alvarado, AER)
• The impact of trans-pacific transport on the ozone air quality in the western U.S. (Mei Gao, UCLA)
• Influence of wildfire emissions on ozone concentration in the western US (Xiao Lu, Peking U.)
• Inter-regional transport of ozone pollution over China (Jingyuan Shao, Peking U.)
• Data assimilation of ozone derived from an AIRS-OMI multi-spectral retrieval (Thomas Walker, Caltech/JPL)

Tuesday, May 5

Chemistry-Climate (Loretta Mickley, Harvard, Chair)

• Uncertainties in isoprene photochemistry and emissions: implications for the oxidative capacity of past and present atmospheres and for trends in climate forcing agents (Ploy Achakulwisut, Harvard)
• A definition of the atmospheric equator and its implications for atmospheric chemistry (Chris Holmes, Florida State U.)
• Effects of historical climate and land cover changes on East Asian air quality (Amos Tai, Chinese U. Hong Kong)
• Drought effects on ozone and PM2.5 (Yuxuan Wang, Texas A&M and Tsinghua)
• Arctic climate response to decadal changes in radiative forcing (Tom Breider, Harvard)
• A land use module for GEOS-Chem (Jeffrey Geddes, Dalhousie)
• Using satellite observations of cloud vertical distribution to improve global model estimates of cloud radiative effect on key tropospheric oxidants (Hongyu Liu, NIA / NASA Langley)

Carbonaceous Aerosols (Matthew Alvarado, AER, Chair)

• Investigating global aerosol and climate-forcing uncertainties due to biofuel emissions/properties in GEOS-Chem (Jack Kodros, Colorado State U.)
• Elucidating the cause of decreasing organic aerosol over recent decades using the GEOS-Chem model (David Ridley, MIT)
• Effect of atmospheric organics on iron bioavailability (Nicholas Meskhidze, NC State)
• Implementing marine organic aerosols into GEOS-Chem (Matthew Johnson, NASA Ames)
• Improving black carbon aging scheme in GEOS-Chem based on aerosol microphysics: Constraints from HIPPO observations (Cenlin He, UCLA)
• Factors controlling black carbon deposition in snow in the Arctic (Ling Qi, UCLA)
• Simulating brown carbon and its direct radiative forcing: from "bottom-up" to "top-down" (Xuan Wang, MIT)

Carbon Cycle & Organics (Ray Nassar, Environment Canada, Chair)

• Satellite-derived yields of isoprene organic aerosol (Eloïse Marais, Harvard)
• A large and ubiquitous source of atmospheric formic acid (Dylan Millet, U. Minnesota)
• Indirect validation of new OMI, GOME-2 and OMPS formaldehyde retrievals using SEAC4RS data (Lei Zhu, Harvard)
• The tropical drivers of the 2011-2010 atmospheric CO2 growth rate (Kevin Bowman, JPL)
• CO2 sinks and sources inferred from GOSAT XCO2 (Feng Deng, U. Toronto)
• Satellite data constraints on biogenic and pyrogenic carbon Fluxes (Anthony Bloom, JPL/Caltech)
• Estimating global and North American methane emissions using GOSAT (Alexander Turner, Harvard)
• Inverse modelling of North American methane emissions using GOSAT proxy and full-physics retrievals (Ilya Stanevich, U. Toronto)

Posters

• Impacts of extreme air pollution meteorology on air quality in in the context of global climate change (Pei Hou, Michigan Tech)
• Sensitivity of tropospheric oxidants to climate as inferred from Greenland ice core records of nitrate isotopes (Becky Alexander, U, Washington)
• Effects of trends in anthropogenic aerosols on drought risk in the United States (Dan Cusworth, Harvard)
• Future changes in ozone and aerosols over China under the Representative Concentration Pathways (RCPs) (Jia Zhu , Chinese Academy of Sciences)
• Influence of 2000-2050 climate change on PM2.5 concentrations in the United States (Lu Shen, Harvard)
• Land use change over South East Asia: Observations and modeling (Sam Silva, MIT)
• OMI-based volcanic SO2 emission into GEOS-Chem (Jun Wang for Cui Ge, U. Nebraska-Lincoln)
• Constraining black carbon aerosol over Asia using the GEOS-Chem adjoint and the assessment the long term Trend of OMI Aerosol Absorption Optical Depth (Li Zhang, U. Colorado – Boulder)
• A new moment-based parameterization for organic aerosols: application to a case study at Mt Tai in China (Li Xing, Peking U.)
• Simulation of influence of Biomass burning to aerosol optical properties in southwest China - Kunming (Jun Zhu, IAP and U. Nebraska-Lincoln)
• Investigating the spectral dependence of absorption by organic aerosols in GEOS-Chem using simulations of the Ultraviolet Aerosol Index (UVAI) (Melanie Hammer, Dalhousie)
• WINTER-time representation of NOy (Jessica Haskins, U. Washington)
• Satellite-based constraints on NOx emissions from anthropogenic area sources (Meng Li, Tsinghua)
• Satellite constraint for NOx emissions over China (Zhen Qu, U. Colorado –Boulder)
• Ethane and propane emissions in the U.S. from oil and gas activities (Zitely Tzompa, Colorado State U.)
• Modeling CO2 fluxes at East Trout Lake, Saskatchewan: What could be learned about the boreal forest carbon cycle with a new TCCON site? (Brendan Byrne, U. Toronto)
• A gridded (0.1°x0.1°), monthly resolved version of the US EPA national methane emissions inventory for use as a priori and reference in methane source inversions (J.D. (Bram) Maasakkers, Harvard)
• Comparison of TCCON and GEOS-Chem CH4 partial column variability (Katherine Saad, Caltech)
• Evaluation of CO distribution and transport in the UTLS from GMI and GEOS-Chem simulations by using Aura MLS observations (Lei Huang, JPL/Caltech)
• Understanding the atmospheric methane dynamics with a cooperated model of TEM and GEOS-Chem and satellite data (Licheng Liu, Purdue)
• Isoprene emissions and impacts over an ecological transition region (Lu Hu, Harvard)
• Formic acid measurement from space : quantifying biomass burning sources of emissions of formic acid (Sreelekha Chaliyakunnel, U. Minnesota)
• Estimate CO2 seasonal and interannual variation in East Asia over 2004-2012 (Yu Fu, Chinese Academy of Sciences)
• Isoprene: Long-term measurement and modelling in Borneo (Shani Garraway, U. York)

Wednesday, May 6

Mercury and Persistent Organic Pollutants (Leonard Levin, EPRI, Chair)

• Revisiting atmospheric Hg oxidation mechanisms in GEOS-Chem: constraints from observations (Hannah Horowitz, Harvard)
• Constraining Hg oxidation and lifetime (Noelle Selin, MIT)
• Global atmospheric transport and source-receptor relationships for arsenic (Shiliang Wu, Michigan Tech)
• Using GEOS-Chem to investigate the effect of multimedia behavior on atmospheric transport of PCBs (Carey Friedman, MIT)
• Constraining mercury oxidation using the NOMADSS aircraft observations (Viral Shah, U. Washington)
• Effects of changes in climate and land use and land cover on atmospheric mercury (Huanxin Zhang, Michigan Tech)
• Improving the parameterization of land-surface exchange in the in the GEOS-Chem Hg model (Shaojie Song, MIT)
• A flat global trend suggests a more important role for domestic emission reduction for observed decrease for atmospheric mercury level over the United States (Yanxu Zhang, Harvard)

Regional and Global Air Quality (Amos Tai, Chinese U. Hong Kong, Chair)

• Regional and global impacts of Southeast Asian coal emissions on particulate matter and ozone (Shannon Koplitz, Harvard)
• Global pollution and transport (Jintai Lin, Peking U.)
• Space-based constraints on VOC emissions in the Pearl River Delta (Christopher Miller, Harvard)
• Combining GEOS-Chem with satellite for improved PM2.5 population exposure estimates (Aaron van Donkelaar, Dalhousie)
• Uncertainties in estimating health effects of PM2.5 exposure (Bonne Ford, Colorado State U.)
• Evaluation the health and climate impacts of cookstove emissions using the GEOS-Chem adjoint model (Forrest Lacey, U. Colorado–Boulder)
• ’APEC Blue' in North China simulated with the high resolution nested GEOS-Chem model (Yixuan Gu, Chinese Academy of Sciences)
• Impacts of large-scale circulation patterns on winter haze over China: interannual variability and extreme events (Beixi Jia, Tsinghua)

Sources and Sinks (Prasad Kasibhatla, Duke, Chair)

• Source analysis of the ozone-induced vegetation loss in the U.S using the GEOS-Chem adjoint (Kateryna Lapina, U. Colorado-Boulder)
• Aviation's impact on atmospheric composition (Steven Barrett, MIT)
• Simulation of N2O sources and sinks with GEOS-Chem and its adjoint: evaluation of observational constraints (Kelley Wells, U. Minnesota)
• A new multi-scale framework for atmospheric source inversion in high-dimensional 4D-Var systems (Nicolas, Bousserez, U. Colorado-Boulder)
• Weak constraint 4D-Var in CO emission estimation (Martin Keller, U. Toronto)
• Source sector and region contributions to concentration and direct radiative forcing of black carbon in China (Ke Li, Chinese Academy of Sciences)

Posters

• Parametric uncertainty quantification for PAH simulations (Colin Thackray, MIT)
• Impacts of land cover change on biomass burning emissions of mercury (Aditya Kumar, Michigan Tech)
• Quantifying anthropogenic influences on mercury deposition to the Great Lakes and their uncertainty (Amanda Giang, MIT)
• New insights into mercury reactivity in Central Antarctica (Dome C) (Helene Angot, LGGE, France)
• Measurements of atmospheric mercury in the Southern Hemisphere: from mid-latitudes to the Pole (Aurélien Dommergue, Grenoble U.)
• A comparison of future air quality scenarios using anthropogenic emissions from the IPCC's Representative Concentration Pathways and MIT's Emissions Prediction and Policy Analysis model (Evan Couzo, MIT)
• Correlation and regression between meteorological variability and fine particulate matter (PM2.5) in the United States: Comparison between observation and simulation (Aoxing Zhang, Peking U.)
• GEOS-Chem Interpretation of SPARTAN: A Global Network to Evaluate and Enhance Satellite-Derived Estimates of PM2.5 (Crystal Weagle, Dalhousie)
• Investigation of the cause of a severe haze event over the North China Plain in winter (Heng Tian, Peking U.)
• Feedback of products outsourcing on regional atmosphere pollution in China (Hongyan Zhao, Tsinghua)
• Estimating ground-level PM2.5 in China using aerosol optical depth determined from the GOCI satellite instrument (Junwei Xu, Dalhousie)
• An investigation of source–receptor relationships for air pollutants in East Asia (Keiya Yumimoto, Meteorological Research Institute/JMA, Japan)
• Quantifying the import and export of population-weighted PM2.5 in the Western Hemisphere using satellite-constrained adjoint sensitivity analysis (Luke Reed, U. Colorado–Boulder)
• Impact of future Chinese emissions on trans-Pacific ozone and aerosols (Mingwei Li, MIT)
• Analyses of China PM2.5 distributions using the GEOS-Chem model and surface observations (Ping Kang, U. Colorado–Boulder)
• Modeling the meteorological sensitivities of extreme pollution events (Will Porter, MIT)
• Global estimates of CO and NOx emissions using multiple species approach (MOPITT CO, TES O3, OMI NO2 and HCHO) (Xuesong Zhang U. Toronto)
• Trend and variability of visibility in the North China Plain: observations and model simulations (Yaping Ma, Peking U.)
• Assessment of global environmental impact of supersonic aviation using the GEOS-Chem adjoint (Irene Dedoussi, MIT)
• Parameterizing the near-source chemistry of biomass burning smoke plumes (Chantelle Lonsdale, AER)
• Role of the Madden-Julian Oscillation in severe smoke events over Singapore and Kuala Lumpur: Implications for human health in the Malay Peninsula (Shannon Koplitz, Harvard)
• Constraining dust sources with the MODIS and MISR observations (Jun Wang for Xiaoguang Xu, U. Nebraska-Lincoln)
• GEOS-Chem adjoint inversion of SO2 emissions with OMI SO2 observations over China (Yi Wang, U. Nebraska-Lincoln)
• Adjoint inversion of NMVOC sources in China using space-based observations of formaldehyde and glyoxal (Hansen Cao, Peking U.)
• Improving constraints on sources and distribution of sea salt aerosols in polar regions with GEOS-Chem (Jiayue Huang, U.Washington)
• Global budget of carbonyl sulfide from model and observation (Le(Elva) Kuai, UCLA/JPL)

Thursday, May 7

Tropospheric Ozone (Hiroshi Tanimoto, NIES Japan, Chair)

• Novel global evaluation of surface ozone in GEOS-Chem (Eric Sofen, U. York)
• Chemical transformations of pollutants during winter: Initial analysis of the WINTER 2015 aircraft campaign (Lyatt Jaeglé, U. Washington)
• Declining NOx in the Southeast U.S. and implications for ozone-NOx-VOC chemistry (Katie Travis, Harvard)
• Impact of grid resolution on tropospheric chemistry simulation constrained by observations from the SEAC4RS aircraft campaign (Karen Yu, Harvard)
• Ozone production in biomass burning plumes (Douglas Finch, U. Edinburgh)
• Factors controlling global tropospheric ozone: roles of convection, halogens, lightning, and isoprene (Lu Hu, Harvard)
• Tropospheric ozone by the two-way coupled model of GEOS-Chem (Yingying Yan, Peking U.)

Nitrogen Cycle (Jenny Fisher, U. Wollongong, Chair)

• Assessing the parameterization of NOx emissions by lightning in GEOS-Chem with HNO3 Columns from IASI (Matthew Cooper, Dalhousie)
• Modeling of gaseous methylamines in the global atmosphere (Fangqun Yu, SUNY-Albany)
• Modeling of lightning related plumes of NOy into the chemical transport GEOS-Chem global model: impact on the upper tropospheric chemistry (Alicia Gressent, LA/U. Paul Sabatier)
• Atmospheric nitrogen deposition to the northwestern Pacific: seasonal variation and source attribution (Yuanhong Zhao, Peking U.)
• Incorporation of a snow NOx source into a global chemical transport model: impact on boundary layer chemistry and implications for ice core records in Antarctica and Greenland (Maria Zatko, U. Washington)
• Assessment of the sources and distribution of PAN over Northern Eurasia using GEOS-Chem and new measurements from TES (Juliet Zhu, Colorado State U.)