Presentations and Posters

Monday, May 6

• Welcome, GEOS-Chem overview (Daniel Jacob, Harvard)
• High-performance GEOS-Chem (GCHP) (Randall Martin, Dalhousie)
• WRF-GC: online coupling of WRF and GEOS-Chem (Tzung-May Fu, SUSTC)
• GEOS-Chem on the AWS cloud (Jiawei Zhuang, Harvard)
• GEOS-Chem and the GMAO: Reaction, replay, and reanalysis (Steven Pawson, NASA)
• Update on GMAO assimilation systems (Andrea Molod, NASA)

• KEYNOTE: Biogenic VOC chemistry influencing secondary organic aerosol (Joel Thornton, U. Washington)
• Anthropogenic control over wintertime oxidation of atmospheric pollutants: the importance of incorporating atypical radical precursors (Jessica Haskins, U. Washington)
• The global budget of methylethylketone (Jared Brewer, CSU)
• The role of clouds in the tropospheric NOx cycle: a new modeling approach for cloud chemistry and its global implications (Chris Holmes, FSU)
• Redefining odd oxygen: A new budget diagnostic for tropospheric ozone (Kelvin Bates, Harvard)
• Development of the adjoint of the GEOS-Chem UCX (Irene Dedoussi, MIT / TU Delft)

• Inverse modeling constraints on sources of NH3 using CrIS remote sensing measurements (Hansen Cao, U. Colorado)
• Assessing the iterative finite difference mass balance and 4D-Var methods to retrieve ammonia emissions over North America using synthetic Cross-track Infrared Sounder observations (Chi Li, Dalhousie)
• Recent trends in China's anthropogenic emissions (Qiang Zhang, Tsinghua)
• Impacts of improved burned area estimates on biomass burning emissions (Holly Nowell, FSU)
• Health impacts of future fossil fuel emissions in Africa (Eloise Marais, U. Leicester)
• Using OMI NO2 observations to evaluate seasonal trends in NOx emissions over eastern China: influence of NOx chemistry (Viral Shah, Harvard)
• Global high-resolution emissions of soil NOx, biogenic VOC, and sea salt aerosols (Hongjian Weng, PKU)
• Global isoprene measurements from CrIS (Kelley Wells, U. Minnesota)

• Model Clinic 1: Working with GEOS-Chem (Bob Yantosca and Melissa Sulprizio, Harvard)
• Model Clinic 2: WRF-GC: GEOS-Chem in WRF (Haipeng Lin and Xu Feng, PKU)
• Model Clinic 3: High-performance GEOS-Chem (GCHP) (Lizzie Lundgren, Harvard; Sebastian Eastham, MIT)

• Adaptive chemistry mechanisms for efficient numerical calculations in GEOS-Chem (Lu Shen, Harvard)
• A CMake build system for GEOS-Chem (Liam Bindle, Dalhousie)
• Machine learning emulator (Christoph Keller, NASA)
• Coupling GEOS-Chem to CESM (Sebastian Eastham, MIT)
• Validation and optimization of the RAS parameterization in GEOS-Chem (Tailong He, U. Toronto)
• Effect of PBL mixing on air quality modeling during KORUS-AQ (Rokjin Park, Seoul National U.)
• Furan oxidation mechanisms: How simple is too simple? How complex is too complex? (Benjamin Brown-Steiner, AER)
• Evaluating sources and concentrations of reactive bromine in the Arctic using ground observations and GEOS-Chem (William Swanson, University of Alaska Fairbanks)
• Comparison of GEOS-Chem and Hemispheric CMAQ predicted ozone and particulate matter (Barron Henderson, US EPA)
• SatJ: A satellite-derived climatology of photolysis rates in the atmosphere (Jason Ducker, FSU)
• Impacts of marine cloud brightening on atmospheric chemistry (Hannah Horowitz, U. Washington)
• Global OH concentrations inferred from HCFC/HFCs (Jianxiong Sheng, MIT)
• The impact of model resolution on ozone simulation (Kunna Li, U. Toronto)
• Volatile organic compounds in fire smoke: How many matter? (Lu Hu, U. Montana)
• The sources, transformations and health impacts of polycyclic aromatic hydrocarbons (Jamie Kelly, MIT)
• Improving simple parameterization of secondary organic aerosol (SOA): IEPOX-SOA and urban SOA (Duseong Jo, U. Colorado)
• Isotopic constraints on heterogeneous chemistry of NOx in extreme urban haze (Yuk Chun Chan, U. Washington)
• SOA formation from volatile chemical products in the US (Momei Qin, US EPA)
• Supplementing the analysis of ground-based FTIR measurements at Toronto with GEOS-Chem (Shoma Yamanouchi, U. Toronto)
• Tropospheric ozone over Southeast Asia (Xiaolin Wang, PKU)
• WRF-Chem simulation of ozone and particulate matter in the Pearl River Delta region, China (Haoran Zhang, NUIST)
• Recent decline of NOx emissions in China observed from space by OMPS NM (Nan Lin, Tsinghua)
• Constraining NMVOCs emissions with satellite and aircraft observations during KORUS-AQ (Jinkyul Choi, U. Colorado)
• Diagnosing spatial biases and uncertainties in global fire emissions inventories: Indonesia as regional case study (Tianjia (Tina) Liu, Harvard)
• Evaluating ocean sources of carbonyl sulfide (OCS) through remote atmosphere observations (Luke Schiferl, LDEO/Columbia)
• Modeling of soil NOx in GEOS-chem (Jun Wang, U. Iowa)
• Updates to the reactive nitrogen dry deposition parameterization in GEOS-Chem (Brian Boys, Dalhousie)
• Spatio-seasonal variations of atmospheric ammonia: comprehensive modelobservation comparison (Arshad Nair, SUNY-Albany)
• Sub-grid ship emission of particle number concentrations: Parameterization and implication (Jingbo Mao, SUNY-Albany)
• Source apportionment in GEOS-Chem (Carmen Lamancusa, U. Connecticut)
• Representing pyrocumulonimbus events in GEOS-Chem (Kenneth Christian, NASA)
• Fires in the Amazon Basin and their environmental impacts across South America (Eimy Bonilla, Harvard)
• Health effects of air pollution embodied in international food trade (Yang Liu, Tsinghua)

Tuesday, May 7

• KEYNOTE: Decadal change in particulate organic carbon fractions (Annmarie Carlton, UC Irvine)
• Heterogeneous sulfate formation in Chinese Haze events (Becky Alexander, U. Washington)
• Simulation of trace metals in PM2.5 over North America using the GEOS-Chem model (Junwei Xu, Dalhousie)
• Defining domains of relevance for secondary organic aerosol formation (William Porter, UC Riverside)
• Evaluation of simulated SOA in Seoul during KORUS-AQ 2016 (Yujin Oak, Seoul National U.)
• New methodology for deriving PM2.5 chemical composition using the synthesis of GEOSChem and High Spectral Resolution Lidar (HSRL) retrievals (Nicholas Meskhidze, NCSU)

• Changes in aircraft emissions impacts due to non-linear, subgrid-scale plume processes (Thibaud Fritz, MIT)
• Influences of ocean iodide on tropospheric photochemistry (Ryan Pound, U. York)
• Tropospheric chlorine chemistry in GEOS-Chem (Xuan Wang, Harvard)
• Using machine learning to bias correct ozone within GEOS-Chem (Peter Ivatt, U. York)
• Observed covariance of ozone and PM2.5 in the Yangtze River Delta region from 2015 to 2017 (Huibin Dai, NUIST)
• Suppression of summer ozone formation under high aerosol conditions (Ke Li, Harvard)
• Incorporating chemical interactions and co-emissions in top-down constraints on sources of NOx, SO2, and CO (Zhen Qu, U. Colorado)

• Coupling a simplified biosphere model with GEOS-Chem (Liang Feng, U. Edinburgh)
• Evaluation of air pollution impacts on terrestrial ecosystems using GEOS-Chem (Amos Tai, CUHK)
• Reassessment of historic fire trends based on Antarctic-wide array of ice cores and fire modeling (Pengfei Liu, Harvard)
• Fire air pollution reduces global terrestrial productivity (Xu Yue, IAP CAS)
• Development of the Beijing Climate Center climate-chemistry model (BCC-AGCM-GCHP): model description and evaluation (Xiao Lu, PKU)
• Linking GEOS-Chem to CESM: An intermodel comparison of the modeling frameworks (Forrest Lacey, NCAR)
• Constraining gaseous dry deposition velocity with in-situ flux observations (Anthony Wong, Boston U.)
• Significant impact of cloud condensation water variability and empirical washout rate on concentrations of nitrate and ammonium (Gan Luo, SUNY-Albany)

• Simulation of organic aerosol in China (Ruqian Miao, PKU)
• PyroCb tropopause smoke composition modeling (Tyler Van, U. Iowa)
• Improved representation of surface PM2.5 using High Spectral Resolution Lidar retrievals and GEOS-Chem-derived aerosol types (Xinyi Ling, NCSU)
• PM2.5 over China during 2014-2017 inferred from MAIAC AOD and Cloud GEOS-Chem (Fei Yao, U. Edinburgh)
• Investigating aerosol influences over Central Asia (Shannon Capps, Drexel U.)
• Application of GEOS-Chem to interpret observations for the estimation of global PM2.5 (Melanie Hammer, Dalhousie)
• Sensitivity of global PM2.5 to emission sectors in GEOS-Chem (Erin McDuffie, Dalhousie)
• On the change of aerosol size distribution due to ionization (Irina Thaler, Hebrew U.)
• Impact of mixing states on aerosol direct radiative forcing and heating rate based on GEOSChem- APM (Hailing Jia, SUNY-Albany)
• The contribution of wild land-fire smoke to US PM2.5 and its influence on recent trends (Katelyn O’Dell, CSU)
• Implications of using the GEOS-Chem air mass factor for interpreting satellite NO2 observations (Matt Cooper, Dalhousie)
• Using satellite observations of tropospheric NO2 columns to infer long-term trends in US NOx emissions: the importance of accounting for the free tropospheric NO2 background (Rachel Silvern, Harvard)
• Atmospheric impacts of improved sea-surface iodide fields and evidence for changes since 1950 (Tomas Sherwen, U. York)
• Gas-phase photo-reduction of oxidized mercury and its implications (Colin Thackray, Harvard)
• Hydroxymethane sulfonate in extreme haze (Jonathan Moch, Harvard)
• Impacts of atmospheric acidity on halogen chemistry from preindustrial to present day (Shuting Zhai, U. Washington)
• Tropospheric bromine chemistry and its impact on ozone and OH (Lei Zhu, Harvard)
• Stratospheric halogen loading in GEOS-Chem UCX and satellite-based retrievals of tropospheric BrO (PamWales, NASA)
• Interpreting TROPOMI data over Southeast Asia using the nested GEOS-Chem model simulation (Margaret Marvin, U. Edinburgh)
• Trends, drivers, and impacts of ozone exposure in the United States from 2000-2015 (Karl Setzer, Duke)
• How much does long-range transport of air pollutants from South Asia affect the Arctic region? (Sujai Banerji, U. Alaska Fairbanks)
• Evaluating and improving Arctic ozone chemistry in GEOS-Chem (Kaitlyn Confer, FSU)
• Air quality and climate impact of charcoal use in Africa (Alfred Bockarie, U. Birmingham)
• Investigating drivers of particulate matter pollution over India and implications for climate (Alex Karambelas, LDEO/Columbia)
• An improved vegetation canopy representation in GEOS-Chem (Sam Silva, MIT)
• Development of a new ecophysiology module in GEOS-Chem to represent biosphereatmosphere exchange (Joey Lam, CUHK)
• Fine-scale projections of wildfire under the mid- and late-21st century climate and land use in the western US (Yang Li, Harvard)
• Radiative effects of aerosols and ozone in China over 2012-2017 as the consequence of clean air actions (Ruijun Dang, IAP CAS)
• Source attribution of climate and health impacts from aerosols (Omar Nawaz, U. Colorado)
• Ecosystem ozone impacts in past, present, future scenarios (David Yung, CUHK)
• Impacts of China anthropogenic aerosols on springtime mesoscale convective systems over southern China (Lijuan Zhang, PKU)
• Response of BVOC emissions to drought stress (Elizabeth Klovenski, U. Houston)
• Sensitivity of aerosol radiative effects to shipping emissions (Deanna Kerry, Dalhousie

Wednesday, May 8

• KEYNOTE: Regional and global scale measurements and modeling of CO2, CH4, and CO (Steve Wofsy, Harvard)
• Recent trends in methane emissions from China and opportunities for mitigation (Scot Miller, Johns Hopkins U.)
• Global budget of atmospheric methane as inferred from GOSAT satellite observations during 2009-2017 (Yuzhong Zhang, Harvard)
• Towards an improved carbon greenhouse gas simulation in GEOS-Chem v12 (Beata Bukosa, U. Wollongong)
• Resolving information in large-scale inversions (Kevin Bowman, JPL)
• Optimizing OH distributions using 14CO and methyl chloroform in the GEOS-Chem adjoint (Lee Murray, U. Rochester)

• Model analysis of interannual variability of Asian Tropopause Aerosol Layer: Transport pathways, sources, and composition (Bo Zhang, NIA)
• Near real-time forecasts at 25km horizontal resolution (Emma Knowland, NASA)
• Trade, atmospheric transport and globalizing air pollution: recent progress (Jintai Lin, PKU)
• Applying GEOS-Chem-TOMAS to understand Arctic marine secondary aerosol contributions to particle size distributions (Betty Croft, Dalhousie)
• On the temporal resolution of transport (Shiliang Wu, Michigan Tech)
• Multi-model comparisons of multi-constituent satellite data assimilation based on ensemble Kalman filter for tropospheric chemistry analysis (Kazuyuki Miyazaki, JPL/JAMSTEC)
• Constraining modeled remote oxidation capacity with ATom observations (Katie Travis, MIT/NASA)

• The effect of emission control measures on ozone concentration in Hangzhou during G20 meeting in 2016 (Ye Wang, NUIST)
• Air quality and health co-benefits of shale gas development in China (Yanxu Zhang, Nanjing)
• Air quality and health effects of the residential energy transition in China (Kelsey Bilsback, CSU)
• Analysis of PM2.5 variations across China (Matthew Jolleys, U. Edinburgh)
• Effect of the transport of ozone and its precursors in Central China on ozone pollution episodes in North China (Cheng Gong, IAP CAS)
• Environmental and health impact of Chinese dietary change from 1980 to 2010 (Xueying Liu, CUHK)
• Future changes in the sensitivity of inorganic fine particulate matter to precursor emissions in China (Mingwei Li, MIT)
• Re-estimating ammonia emission inventory in eastern China using CrIS satellite observations of ammonia and GEOS-Chem adjoint model (Juliet (Liye) Zhu, Sun-Yat-Sen U.)

• Prior biosphere model impact on global terrestrial CO2 fluxes estimated from OCO-2 retrievals (Sajeev Philip, NASA)
• Diagnosing global changes in atmospheric methane using ethane and propane (Douglas Finch, U. Edinburgh)
• Methane clumped isotopes In GEOS-Chem (Alice Drinkwater, U. Edinburgh)
• Evaluation of a new methane isotopologue forward model of GEOS-Chem (Mingjian Shi, U. Rochester)
• Interannual variability in CO2 fluxes from OCO-2 using a geostatistical inverse model (Zichong Chen, Johns Hopkins U.)
• Inverse modeling of CO2 fluxes using O-Buoys, a multi-year dataset of surface observations from the Arctic Ocean (Kelly Graham, FSU)
• Methane emissions from oil and gas industries in three western provinces of Canada using GOSAT observations in mass balance method and comparison with GEOS-Chem (Nazrul Islam, U. Northern British Columbia)
• Regional inversion modeling: A framework for understanding CO2 concentration in Seoul megacity (JongWong Lee, Seoul National U.)
• Strengthened scientific support for the Endangerment Finding for atmospheric greenhouse gases (Loretta Mickley, Harvard)
• The variation trend of atmospheric methane from observation and modeling (Haiyue Tan, PKU)
• Top-down constraints on methane point source emissions from animal agriculture and waste based on GEM airborne measurements in the US Upper Midwest (Xueying Yu, U. Minnesota)
• Reduced rank Jacobians: Decreasing the computational cost of high resolution analytic inversions (Hannah Nesser, Harvard)
• Quantification of Canadian methane emissions using the ECCC surface observation network (Sabour Baray, York U.)
• Modeling CO2 fluxes using satellite observations (Feng Deng, U. Toronto)
• Variability and sources of tropospheric aerosols over the North Atlantic during NAAMES (Hongyu Liu, NIA)
• Long-range transport events of black carbon and carbon monoxide from East Asia to the Arctic (Kohei Ikeda, NEIS)
• HCOOH from ATom (Xin Chen, U. Minnesota)
• Detection of wildfire pollution in the Arctic using ground-based FTIR measurements and GEOS-Chem (Erik Lutsch, U. Toronto)
• Temporal variations in CO and isoprene over tropical Africa (Christian DiMaria, U. Toronto)
• Designing new interventions to mitigate the impact of Indian agricultural residue burning (Ruoyu Lan, MIT)
• Understanding the sources of aerosol pollution in India (Sidhant Pai, MIT)
• Air quality and health impacts of household energy transitions in the Indo Gangetic Plain (Mrinmoy Chakraborty, U. British Columbia)
• Impact of emissions from coal fired power plants on health using air chemistry modeling (Madhulika Gurazada, Indian School of Business Hyderabad)
• Air quality study using GEOS-Chem (Xinhua Shen, U. Northern Iowa)
• The impact of large-scale afforestation project on ozone pollution in Beijing-Tianjin-Hebei region, China (Xin Long, SUSTC)
• Investigation of extreme particulate pollution in Beijing (Anqi Hu, NUIST)
• Evaluating the efficacy of autumn-winter emission controls in the Beijing-Tianjin-Hebei region (Gongda Lu, U. Birmingham)
• Simulated severe particulate pollution in China over years of 2013-2018 (Ling Kang, NUIST)
• Changes in ammonia agriculture emissions and their impact on surface PM2.5 pollution in China during 2005-2015 (Youfan Chen, PKU / U. Colorado)
• Air quality benefits of wind power development in U.S. (Minghao Qiu, MIT)
• Diagnosing the long-term and short-term changes in ozone production sensitivity to precursor emissions: the view from space (Xiaomeng Jin, LDEO/Columbia)
• Modelled and measured fine-scale spatiotemporal variability in AOD and PM2.5 across the Colorado Front Range (Michael Cheeseman, CSU)
• Seasonal variations and long-term trend of dust particle number concentration over the Northeastern United States (Yanda Zhang, SUNY-Albany)

Thursday, May 9

• Meteorology of ozone episodes in North American summers from 1980 to 2018 (Charlie White, U. Toronto)
• Transport of ozone for San Antonio (Wei Li, U. Houston)
• Long-term trend of particle number concentrations in the United States and implications (Fangqun Yu, SUNY-Albany)
• Improving surface PM2.5 forecast using an ensemble of satellite data, chemistry transport model outputs, and surface observations (Jessie Zhang, U. Iowa)
• Investigating biomass burning aerosol in North America (Tess Carter, MIT)
• Response of Hurricane Harvey's rainfall to anthropogenic aerosols (Amir Souri, Harvard-Smithsonian CFA)
• Investigation of anthropogenic influence on VOCs and SOA in the southeast US (Yiqi Zheng, U. Alaska Fairbanks)
• GEOS-Chem adjoint inversion of SO2 and NOx emissions with multi-sensor (OMPS, OMI, and VIIRS) data over China (Yi Wang, U. Iowa)
• Source contributions to ambient fine particulate matter for Canada using GEOS-Chem (Jun Meng, Dalhousie)

• Model Clinic 4: GEOS-Chem on the AWS Cloud (Jiawei Zhuang and Bob Yantosca, Harvard)
• Model Clinic 5: GEOS-Chem in Earth System Models (Christoph Keller, NASA; Sebastian Eastham, MIT)
• Model Clinic 6: GEOS-Chem nested model (Yuxuan Wang, U. Houston; Lin Zhang, PKU)
• Model Clinic 7: GEOS-Chem adjoint model; Handout (Daven Henze and Yanko Davila, U. Colorado)