Ice Nucleation by Marine Aerosols Over the North Atlantic Ocean in Late Spring

Wilbourn, Elise K.; Thornton, Daniel C. O.; Ott, Catherine; Graff, Jason; Quinn, Patricia K.; Bates, Timothy S.; Betha, Raghu; Russell, Lynn M.; Behrenfeld, Michael J.; Brooks, Sarah D.

doi:10.1029/2019jd030913

i

Ice Nucleation by Marine Aerosols Over the North Atlantic Ocean in Late Spring

Supporting Files

2020
By Wilbourn, Elise K. ; Thornton, Daniel C. O. ; Ott, Catherine ; ...

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Journal Title:

Journal of Geophysical Research: Atmospheres
Personal Author:

Wilbourn, Elise K. ; Thornton, Daniel C. O. ; Ott, Catherine ; Graff, Jason ; Quinn, Patricia K. ; Bates, Timothy S. ; Betha, Raghu ; Russell, Lynn M. ; Behrenfeld, Michael J. ; Brooks, Sarah D.
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; JISAO (Joint Institute for the Study of the Atmosphere and Ocean) ; PMEL (Pacific Marine Environmental Laboratory)
Description:

Here we report the ice nucleating temperatures of marine aerosols sampled in the subarctic Atlantic Ocean during a phytoplankton bloom. Ice nucleation measurements were conducted on primary aerosol samples and phytoplankton isolated from seawater samples. Primary marine aerosol samples produced by a specialized aerosol generator (the Sea Sweep) catalyzed droplet freezing at temperaturesbetween −33.4 °C and −24.5 °C, with a mean freezing temperature of −28.5 °C, which was signi ﬁcantly warmer than the homogeneous freezing temperature of pure water in the atmosphere ( −36 °C). Following a storm ‐induced deep mixing event, ice nucleation activity was enhanced by two metrics: (1) the fraction of aerosols acting as ice nucleating particles (INPs) and (2) the nucleating temperatures, which were the
Keywords:

Atmospheric Science Earth And Planetary Sciences (miscellaneous) Geophysics Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Space And Planetary Science
Source:

Journal of Geophysical Research: Atmospheres, 125(4)
DOI:

https://doi.org/10.1029/2019jd030913
ISSN:

2169-897X ; 2169-8996
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Rights Information:

Other
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Library
Main Document Checksum:

urn:sha256:6096424f91f6e7d29c6b36e4dac15f86ff9cfe87fa0ce3f2bad926cab18f338b
Download URL:

https://repository.library.noaa.gov/view/noaa/55052/noaa_55052_DS1.pdf
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[PDF - 2.16 MB ]

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