Urban Aerosols

Aerosol Acidity as a Driver of Aerosol Formation and Nutrient Deposition to Ecosystems. ATHANASIOS NENES, Spyros Pandis, Maria Kanakidou, Armistead G. Russell, Shaojie Song, Petros Vasilakos, Rodney J. Weber, LAPI/EPFL, Switzerland; ICE-HT/FORTH, Greece

Aerosol Composition in Pasadena, CA during the COVID-19 Pandemic. BENJAMIN SCHULZE, Christopher Kenseth, Yuanlong Huang, Harrison Parker, John Crounse, Paul Wennberg, John Seinfeld, California Institute of Technology

Air Quality Impact During and After the COVID-19 Lockdown in Global Cities. Shaojun Zhang, Jiajun Gu, K. Max Zhang, BO YANG, Yuejie Wang, Yifan Wen, Ye Wu, Jiming Hao, Cornell University

An Evaluation of Air Quality Impacts from Different Urban Greening Strategies in Los Angeles County. SHAN GU, Celia Faiola, University of California, Irvine

Application of Machine Learning for Future Air Quality Predictions in Southern California. KHANH DO, Arash Kashfi Yeganeh, Cesunica E. Ivey, University of California, Riverside

Apportionment of Metals and Particulate Matter at an Environmental Justice School in Maywood, California. STEVEN G. BROWN, Olivia Ryder, Jennifer DeWinter, Hilary Hafner, Jenny Lentz, Joe Lyou, Felipe Aguirre, Sonoma Technology, Inc

Characterization and Variability of Urban Cooking Emissions Sources. SUNHYE KIM, Jo Machesky, Drew Gentner, Albert A. Presto, Carnegie Mellon University

Characterization of the Complex Mixture of Urban and Biomass Burning Aerosols Under the Influence of Transboundary Smoke Haze in Southeast Asia. LAURA-HELENA RIVELLINI, Nethmi Kasthuriarachchi, Mutian Ma, Alex Lee, National University of Singapore

Contributions of Cooking and Biomass Burning to Primary Organic Aerosol in Delhi. SAHIL BHANDARI, Gazala Habib, Joshua Apte, Lea Hildebrandt Ruiz, University of Texas at Austin

Discovery of Atmospheric Microplastics in Urban Emissions. ANA MORALES, Jay Tomlin, Yoorae Noh, Andrew Whelton, Alexander Laskin, Purdue University

Estimating Dry Deposition of Atmospheric Aerosols by Rain Washoff from Urban Surfaces. ALEXANDER JOHNSON, Cliff Davidson, Syracuse University

Estimation of Effective Particle Mass Emission Indices from In-use Commercial Aircraft based on Field Observations. KENTARO MISAWA, Yuji Fujitani, Akihiro Fushimi, Yoshiko Murashima, Hiromu Sakurai, Nobuyuki Takegawa, Tokyo Metropolitan University

Exploring Sources of Ultrafine and Nucleation Mode Particles. Alyssa Zimmerman, Markus Petters, NICHOLAS MESKHIDZE, North Carolina State University

Firework Impacts on Air Quality in Metro Manila, Philippines during the 2019 New Year. GENEVIEVE ROSE LORENZO, Rachel Braun, Lin Ma, Eva-Lou Edwards, Connor Stahl, Mojtaba Azadi Aghdam, Andrea F Corral, Hossein Dadashazar, Paola Angela Banaga, Grace Betito, Gabrielle Leung, Shane Marie Visaga, Avelino Arellano, Maria Obiminda Cambaliza, Melliza Templonuevo Cruz, Alexander B. MacDonald, Ilya Razencov, Ed Eloranta, Robert Holz, James Bernard Simpas, Armin Sorooshian, University of Arizona

From Low-Cost Sensors to High-Quality Data: the Importance of Collocated Calibration Model Development for the AfriqAir Network. MICHAEL R. GIORDANO, Julien Bahino, Matthias Beekmann, Thomas Bigala, Paola Formenti, Mathieu Cazaunau, Corinne Galy-Lacaux, Jimmy Gasore, Theobald Habineza, Aliaksei Hauryliuk, Vincent Madadi, Carl Malings, Beatrice Marticorena, Stuart Piketh, Albert A. Presto, R. Subramanian, Daniel Westervelt, Veronique Yoboue, OSU-EFLUVE, LISA/CNRS, UPEC, ENPC, UP

How Spatially Correlated Are Ultrafine Particle Number and Fine Particle Mass at Urban Scales?. PROVAT SAHA, Shayak Sengupta, Peter Adams, Allen Robinson, Albert A. Presto, Carnegie Mellon University

Identifying the Transport and Evolution of Oxidized Organic Aerosol across the Urban Core of San Antonio. FANGZHOU GUO, Alexander Bui, Edward Fortner, Sujan Shrestha, Subin Yoon, Rebecca J. Sheesley, Sascha Usenko, Tara Yacovitch, Scott Herndon, James Flynn, Robert Griffin, Rice University

Improved Prediction of Near Roadside Vehicle Emissions from PEMS and Laboratory Measurements. AYLA MORETTI, David R. Cocker III, Matthew Barth, University of California, Riverside

Influence of the COVID-19 Lockdown on Delhi's Air Quality. KANAN PATEL, Mark Campmier, Sahil Bhandari, Nisar Ali Baig, Gazala Habib, Joshua Apte, Lea Hildebrandt Ruiz, University of Texas at Austin

Leveraging a PurpleAir Sensor Network to Inform Air Quality Action in Phoenix, Arizona. IAN VONWALD, Karoline Barkjohn, Samuel Frederick, Sue Kimbrough, Ben Davis, Nikki Peterson, Ira Domsky, Ron Pope, Andrea Clements, U.S. EPA Office of Research and Development

Long-term Analysis to Elucidate the Origins of Ultrafine Particles in a Major City. HOSNA MOVAHHEDINIA, Nathan Hilker, Cheol H. Jeong, Greg J. Evans, SOCAAR, University of Toronto

Long-term Observations of Submicron Atmospheric Aerosol Concentrations - Effect of Legislative Regulations and Economic Transformations. NADEŽDA ZÍKOVÁ, Petra Pokorná, Zdenek Wagner, Jakub Ondráček, Philip K. Hopke, Institute of Chemical Process Fundamentals CAS

MAIA: A Satellite Investigation of PM Health Effects in Selected Global Cities. YANG LIU, David Diner, Howard Chang, Feng Xu, Jun Wang, Randall Martin, Christian L'Orange, Kristal Verhulst-Whitten, Sina Hasheminassab, Emory University, Atlanta, GA

Nighttime Chemistry of Biomass Burning Plumes in Urban Areas: A Dual Mobile Chamber Study. SPIRO JORGA, Kalliopi Florou, Christos Kaltsonoudis, Jack Kodros, Christina Vasilakopoulou, Spyros Pandis, Carnegie Mellon University, University of Patras

On the Impacts of COVID-19 Pandemic on Air Quality in Florida. MARWA EL-SAYED, Yasin Elshorbany, Kirsten Koehler, Embry-Riddle Aeronautical University

Performance and In-field Calibration for Low-Cost Sensors Measuring Ambient Particulate Matter in Kolkata, India. V. FAYE MCNEILL, Columbia University

Rapid Growth of New Atmospheric Particles by Nitric Acid and Ammonia Condensation. MINGYI WANG, Weimeng Kong, Ruby Marten, Xucheng He, Dexian Chen, Joschka Pfeifer, Arto Heitto, Jenni Kontkanen, Lubna Dada, Andreas Kürten, Taina Yli-Juuti, Hanna Manninen, The CLOUD collaboration, Rainer Volkamer, Ilona Riipinen, Josef Dommen, Joachim Curtius, Urs Baltensperger, Markku Kulmala, Douglas Worsnop, Jasper Kirkby, John Seinfeld, Imad EI Haddad, Richard Flagan, Neil Donahue, Carnegie Mellon University; The CLOUD Collaboration

Reduced Traffic Volumes and Air Quality during the COVID-19 Shutdown. CHEOL H. JEONG, Nathan Hilker, Taylor Edwards, Jon M. Wang, Jerzy Debosz, Yushan Su, Anthony Munoz, Dennis Herod, Greg J. Evans, SOCAAR, University of Toronto

Secondary Organic Aerosol Formation and Product Distributions of α-pinene Oxidation in Ambient Perturbation Experiments. JEAN RIVERA-RIOS, Adam Wright, Zijing Zhang, Jennifer Kaiser, Nga Lee Ng, Georgia Institute of Technology

Spatial Pattern of Trace Metal Concentrations in Southern California Associated With Brake and Tire Wear Emissions. FARZAN OROUMIYEH, Irish Del Rosario, Michael Jerrett, Jonah Lipsitt, Jonathan Liu, Suzanne E. Paulson, Beate Ritz, Jiaqi Shen, Yifang Zhu, University of California Los Angeles