A081
The Effect of the COVID-19 Outbreak on Air Pollution and Urban Carbon Emissions I

Wednesday, 9 December 2020: 20:30-21:30
Virtual
Primary Convener:  James D Lee, University of York, Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, York, United Kingdom
Conveners:  Roisin Commane, Columbia University in the City of New York, New York, NY, United States and Xiaomeng Jin, Columbia University in the City of New York, Lamont-Doherty Earth Observatory, New York, NY, United States
Primary Liaison:  James D Lee, University of York, Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, York, United Kingdom
Chairs:  Roisin Commane, Columbia University in the City of New York, New York, NY, United States and Xiaomeng Jin, Columbia University in the City of New York, Lamont-Doherty Earth Observatory, New York, NY, United States
OSPA Liaison:  Xiaomeng Jin, Columbia University in the City of New York, Lamont-Doherty Earth Observatory, New York, NY, United States
20:30
COVID-19: Impacts of California’s Stay-At-Home order and economic recovery on fossil fuel-derived carbon emissions in California (741254)
Claudia I Czimczik1, Francesca Mia Hopkins2, Cindy Cristina Yanez1 and Xiaomei Xu1, (1)University of California, Irvine, Earth System Science, Irvine, CA, United States, (2)University of California, Riverside, Riverside, CA, United States
20:34
CO2 Concentrations Reduction Influenced by Traffic in Beijing due to COVID-19 (690015)
Di Liu1, Ning Zeng2, Pengfei Han3,4, Bo Yao5, Wanqi Sun5, Zhiqiang Liu6, Ke Zheng7, Han Mei1 and Qixiang Cai7, (1)Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China, (2)University of Maryland, Department of Atmospheric and Oceanic Science, College Park, United States, (3)Corresponding Author, Beijing, China, (4)Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Beijing, China, (5)Meteorological Observation Centre, China Meteorological Administration, Beijing, China, (6)Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, MD, United States, (7)Insititute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
20:38
Covid19’s disparate impact on transportation and emissions (729024)
Pawlok Dass1, Kevin R Gurney2, Bhaskar Mitra3, Yang Song1, Geoffrey S Roest2 and Taha Moiz4, (1)Northern Arizona University, Flagstaff, AZ, United States, (2)Northern Arizona University, School of Informatics, Computing, and Cyber Systems, Flagstaff, AZ, United States, (3)Northern Arizona University, School of Informatics, Computing and Cyber Systems, Flagstaff, AZ, United States, (4)Arizona State University, School of Sustainability, Tempe, AZ, United States
20:42
Dense networks for constraining urban emissions: Examples of dramatic and subtle changes during 2020 (714497)
Ronald C Cohen1, Alex J Turner2, Helen Fitzmaurice3, Jinsol Kim4, Catherine Newman4, Paul J Wooldridge4 and Kevin A Worthington4, (1)University of California, Berkeley, Dept. of Earth and Planetary Science, Berkeley, CA, United States, (2)University of Washington Seattle Campus, Seattle, United States, (3)University of California Berkeley, Berkeley, United States, (4)University of California Berkeley, Berkeley, CA, United States
20:46
NOx reductions during COVID-19: Has ozone chemistry in the Los Angeles area become NOx-limited? (764443)
Jason Schroeder1, Jeremy Avise1, Jin Xu2, David Andrew Ridley3, Toshihiro Kuwayama1, Hyung Joo Lee1, Chenxia Cai1, Fang Yan4 and Nancy Bui5, (1)California Air Resources Board, Sacramento, CA, United States, (2)California Environmental Protection Agency Air Resources Board, Sacramento, CA, United States, (3)California Air Resources Board, Monitoring and Laboratory Division, Sacramento, United States, (4)California Air Resources Board, Air Quality Planning and Science Division, Sacramento, CA, United States, (5)California Environmental Protection Agency Air Resources Board, Sacramento, United States
20:50
Quantifying and attributing methane (CH4) and carbon monoxide (CO) emission changesin New York City during the COVID-19 shutdown (693478)
Luke D Schiferl, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Bronte Dalton, Columbia University in the City of New York, Department of Earth and Environmental Sciences, New York, NY, United States, Savannah Ferretti, Cornell University, Earth and Atmospheric Sciences, Ithaca, NY, United States, Brian C McDonald, Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, Cong Cao, Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States, John E Mak, SUNY Stony Brook, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States, Ricardo Toledo-Crow, City University of New York, New York, NY, United States and Roisin Commane, Columbia University in the City of New York, New York, NY, United States
20:54
Reduced greenhouse gas emissions seen from the in-situ aircraft observation over the Baltimore, MD-Washington, D.C. area during COVID-19 pandemic period: Mass balance flux estimation of CO2, CO, CH4 and source sector attribution using activity metric data (750121)
Doyeon Ahn, University of Maryland College Park, College Park, MD, United States, Xinrong Ren, University of Maryland, Dept. of Atmos. & Oceanic Sci., NOAA Air Resources Laboratory, College Park, MD, United States, Philip Stratton, University of Maryland, College Park, MD, United States, Joel Dreessen, Maryland Department of the Environment, Air Monitoring Program, Baltimore, MD, United States, Paul Shepson, Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States, Eric A Kort, University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, Colm Sweeney, NOAA Global Monitoring Laboratory, Boulder, CO, United States, Alexander J. Turner, University of Washington, Seattle, WA, United States, James R Whetstone, National Institute of Standards and Technology Gaithersburg, Gaithersburg, MD, United States, Ross J Salawitch, University of Maryland, AOSC and Chemistry, College Park, MD, United States and Russell R. Dickerson, University of Maryland, College Park, United States
20:58
Urban greenhouse gas emission response to COVID-19 shutdowns (Invited) (673393)
Jocelyn C Turnbull1,2, Anna Karion3, Jooil Kim4, Kristal R Verhulst5, Vineet Yadav6, Charles E Miller6, Daniel Cusworth7, Ralph F Keeling4, Ray F Weiss4, Riley M Duren8, Natasha Miles9, Scott Richardson10, Kenneth J Davis11, Vanessa Monteiro9, Eli Vogel12, Shane Markus12, Israel Lopez-Coto3, Sharon Gourdji3, Subhomoy Ghosh3, Kimberly L Mueller3, Logan Mitchell13, John C Lin14, Maryann R Sargent15, Steven C Wofsy16 and Felix R Vogel17, (1)GNS Science, Lower Hutt, New Zealand, (2)University of Colorado at Boulder, CIRES, Boulder, United States, (3)National Institute of Standards and Technology Gaithersburg, Gaithersburg, MD, United States, (4)Scripps Institution of Oceanography, La Jolla, CA, United States, (5)JPL, Pasadena, CA, United States, (6)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (7)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (8)University of Arizona, Tucson, AZ, United States, (9)Pennsylvania State University, Department of Meteorology and Atmospheric Science, University Park, PA, United States, (10)Pennsylvania State University, Department of Meteorology and Atmospheric Science, State College, PA, United States, (11)The Pennsylvania State University, University Park, PA, United States, (12)Pennsylvania State University Main Campus, University Park, United States, (13)University of Utah, Salt Lake City, United States, (14)University of Utah, Atmospheric Sciences, Salt Lake City, UT, United States, (15)Harvard University, Cambridge, MA, United States, (16)Harvard Univ, Cambridge, MA, United States, (17)Environment and Climate Change Canada, Climate Research Division, Toronto, Canada
21:02
Discussion
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