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A biogenic secondary organic aerosol source of cirrus ice nucleating particles

  • Martin J. Wolf
  • , Yue Zhang
  • , Maria A. Zawadowicz
  • , Megan Goodell
  • , Karl Froyd
  • , Evelyn Freney
  • , Karine Sellegri
  • , Michael Rösch
  • , Tianqu Cui
  • , Margaux Winter
  • , Larissa Lacher
  • , Duncan Axisa
  • , Paul J. DeMott
  • , Ezra J.T. Levin
  • , Ellen Gute
  • , Jonathan Abbatt
  • , Abigail Koss
  • , Jesse H. Kroll
  • , Jason D. Surratt
  • , Daniel J. Cziczo
  • Massachusetts Institute of Technology
  • Department of Environmental Sciences and Engineering
  • Aerodyne Research, Inc.
  • Boston College
  • Texas A&M University
  • Pacific Northwest National Laboratory
  • National Oceanic and Atmospheric Administration
  • University of Colorado Boulder
  • Université Clermont Auvergne
  • Swiss Federal Institute of Technology Zurich
  • Paul Scherrer Institute
  • Harvard University
  • Karlsruhe Institute of Technology
  • Droplet Measurement Technology
  • Colorado State University
  • Now at Handix Scientific Inc
  • University of Toronto
  • TOFWERK USA
  • University of North Carolina at Chapel Hill
  • Purdue University

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

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.

Original languageEnglish
Article number4834
JournalNature Communications
Volume11
Issue number1
DOIs
StatePublished - Dec 1 2020
Externally publishedYes

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