New particle formation in the remote marine boundary layer

Guangjie Zheng, Yang Wang, Robert Wood, Michael P. Jensen, Chongai Kuang, Isabel L. McCoy, Alyssa Matthews, Fan Mei, Jason M. Tomlinson, John E. Shilling, Maria A. Zawadowicz, Ewan Crosbie, Richard Moore, Luke Ziemba, Meinrat O. Andreae and Jian Wang ()
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Guangjie Zheng: Washington University in St. Louis
Yang Wang: Washington University in St. Louis
Robert Wood: University of Washington
Michael P. Jensen: Brookhaven National Laboratory
Chongai Kuang: Brookhaven National Laboratory
Isabel L. McCoy: University of Washington
Alyssa Matthews: Pacific Northwest National Laboratory
Fan Mei: Pacific Northwest National Laboratory
Jason M. Tomlinson: Pacific Northwest National Laboratory
John E. Shilling: Pacific Northwest National Laboratory
Maria A. Zawadowicz: Pacific Northwest National Laboratory
Ewan Crosbie: NASA Langley Research Center
Richard Moore: NASA Langley Research Center
Luke Ziemba: NASA Langley Research Center
Meinrat O. Andreae: Max Planck Institute for Chemistry
Jian Wang: Washington University in St. Louis

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Marine low clouds play an important role in the climate system, and their properties are sensitive to cloud condensation nuclei concentrations. While new particle formation represents a major source of cloud condensation nuclei globally, the prevailing view is that new particle formation rarely occurs in remote marine boundary layer over open oceans. Here we present evidence of the regular and frequent occurrence of new particle formation in the upper part of remote marine boundary layer following cold front passages. The new particle formation is facilitated by a combination of efficient removal of existing particles by precipitation, cold air temperatures, vertical transport of reactive gases from the ocean surface, and high actinic fluxes in a broken cloud field. The newly formed particles subsequently grow and contribute substantially to cloud condensation nuclei in the remote marine boundary layer and thereby impact marine low clouds.

Date: 2021
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DOI: 10.1038/s41467-020-20773-1

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