1. A biogenic secondary organic aerosol source of cirrus ice nucleating particles
- Author
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Ellen Gute, Megan Goodell, Tianqu Cui, Karine Sellegri, Maria A. Zawadowicz, Margaux Winter, Michael Rösch, Yue Zhang, Martin J. Wolf, Jason D. Surratt, Jesse H. Kroll, Ezra J. T. Levin, Daniel J. Cziczo, Jonathan P. D. Abbatt, Evelyn Freney, Paul J. DeMott, Abigail R. Koss, Larissa Lacher, Karl D. Froyd, Duncan Axisa, Department of Earth and Planetary Sciences [Cambridge, USA] (EPS), Harvard University [Cambridge], Department of Environmental Sciences & Engineering, University of North Carolina [Chapel Hill] (UNC), University of North Carolina System (UNC)-University of North Carolina System (UNC), Aerodyne Research Incorporated, Center for Aerosol and Cloud Chemistry, Department of Chemistry and Chemical Biology [Boston], Northeastern University [Boston], Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory (PNNL), NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA), Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado [Boulder]-National Oceanic and Atmospheric Administration (NOAA), Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Institute for Atmospheric and Climate Science [Zürich] (IAC), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Laboratory of Atmospheric Chemistry [Paul Scherrer Institute] (LAC), Paul Scherrer Institute (PSI), Department of Chemistry and Chemical Biology [Harvard], Institute of Meteorology and Climate Research – Atmospheric Environmental Research, Karlsruhe Institute of Technology, Partenaires INRAE, Droplet Measurement Technologies, Department of Atmospheric Science, Colorado State University, Department of Chemistry [University of Toronto], University of Toronto, Department of Civil and Environmental Engineering [Cambridge] (CEE), Massachusetts Institute of Technology (MIT), Harvard University, Karlsruhe Institute of Technology (KIT), Department of Atmospheric Science [Fort Collins], and Colorado State University [Fort Collins] (CSU)
- Subjects
Atmospheric chemistry ,010504 meteorology & atmospheric sciences ,Climate ,Science ,General Physics and Astronomy ,010501 environmental sciences ,Atmospheric sciences ,01 natural sciences ,Article ,General Biochemistry, Genetics and Molecular Biology ,Physics::Geophysics ,Troposphere ,Atmosphere ,chemistry.chemical_compound ,Hemiterpenes ,ddc:550 ,Butadienes ,Atmospheric science ,Precipitation ,lcsh:Science ,Physics::Atmospheric and Oceanic Physics ,Isoprene ,0105 earth and related environmental sciences ,Aerosols ,Supersaturation ,Multidisciplinary ,Ice ,General Chemistry ,Aerosol ,Earth sciences ,chemistry ,13. Climate action ,[SDE]Environmental Sciences ,Ice nucleus ,Environmental science ,lcsh:Q ,Cirrus ,Astrophysics::Earth and Planetary Astrophysics - Abstract
Atmospheric ice nucleating particles (INPs) influence global climate by altering cloud formation, lifetime, and precipitation efficiency. The role of secondary organic aerosol (SOA) material as a source of INPs in the ambient atmosphere has not been well defined. Here, we demonstrate the potential for biogenic SOA to activate as depositional INPs in the upper troposphere by combining field measurements with laboratory experiments. Ambient INPs were measured in a remote mountaintop location at –46 °C and an ice supersaturation of 30% with concentrations ranging from 0.1 to 70 L–1. Concentrations of depositional INPs were positively correlated with the mass fractions and loadings of isoprene-derived secondary organic aerosols. Compositional analysis of ice residuals showed that ambient particles with isoprene-derived SOA material can act as depositional ice nuclei. Laboratory experiments further demonstrated the ability of isoprene-derived SOA to nucleate ice under a range of atmospheric conditions. We further show that ambient concentrations of isoprene-derived SOA can be competitive with other INP sources. This demonstrates that isoprene and potentially other biogenically-derived SOA materials could influence cirrus formation and properties., Ice nucleating particles impact the global climate by altering cloud formation and properties, but the sources of these emissions are not completely characterized. Here, the authors show that secondary organic aerosols formed from the oxidation of organic gases in the atmosphere can be a source of ice nucleating particles.
- Published
- 2020
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