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Increasing Contributions of Temperature-Dependent Oxygenated Organic Aerosol to Summertime Particulate Matter in New York City.
Hass-Mitchell, Tori; Joo, Taekyu; Rogers, Mitchell; Nault, Benjamin A; Soong, Catelynn; Tran, Mia; Seo, Minguk; Machesky, Jo Ellen; Canagaratna, Manjula; Roscioli, Joseph; Claflin, Megan S; Lerner, Brian M; Blomdahl, Daniel C; Misztal, Pawel K; Ng, Nga L; Dillner, Ann M; Bahreini, Roya; Russell, Armistead; Krechmer, Jordan E; Lambe, Andrew; Gentner, Drew R.
Afiliação
  • Hass-Mitchell T; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Joo T; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Rogers M; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Nault BA; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts 01821, United States.
  • Soong C; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Tran M; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Seo M; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Machesky JE; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States.
  • Canagaratna M; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts 01821, United States.
  • Roscioli J; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts 01821, United States.
  • Claflin MS; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts 01821, United States.
  • Lerner BM; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts 01821, United States.
  • Blomdahl DC; Department of Civil, Architectural, and Environmental Engineering, University of Texas at Austin, Austin, Texas 78712, United States.
  • Misztal PK; Department of Civil, Architectural, and Environmental Engineering, University of Texas at Austin, Austin, Texas 78712, United States.
  • Ng NL; School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Dillner AM; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Bahreini R; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Russell A; Air Quality Research Center, University of California Davis, Davis, California 95618, United States.
  • Krechmer JE; Department of Environmental Sciences, University of California, Riverside, California 92521, United States.
  • Lambe A; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Gentner DR; Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, Massachusetts 01821, United States.
ACS EST Air ; 1(2): 113-128, 2024 Feb 09.
Article em En | MEDLINE | ID: mdl-39309979
ABSTRACT
As part of the summer 2022 NYC-METS (New York City metropolitan Measurements of Emissions and TransformationS) campaign and the ASCENT (Atmospheric Science and Chemistry mEasurement NeTwork) observational network, speciated particulate matter was measured in real time in Manhattan and Queens, NY, with additional gas-phase measurements. Largely due to observed reductions in inorganic sulfate aerosol components over the 21st century, summertime aerosol composition in NYC has become predominantly organic (80-83%). Organic aerosol source apportionment via positive matrix factorization showed that this is dominated by secondary production as oxygenated organic aerosol (OOA) source factors comprised 73-76% of OA. Primary factors, including cooking-related organic aerosol (COA) and hydrocarbon-like organic aerosol (HOA) comprised minor fractions of OA, only 13-15% and 10-11%, respectively. The two sites presented considerable spatiotemporal variations in OA source factor concentrations despite similar average PM2.5 concentrations. The less- and more-oxidized OOA factors exhibited clear temperature dependences at both sites with increased concentrations and greater degrees of oxidation at higher temperatures, including during a heatwave. With strong temperature sensitivity and minimal changes in summertime concentrations since 2001, secondary OA poses a particular challenge for air quality policy in NYC that will very likely be exacerbated by continued climate change and extreme heat events.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: ACS EST Air Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: ACS EST Air Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos