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Ice Nucleation by Marine Aerosols Over the North Atlantic Ocean in Late Spring
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2020
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Source: Journal of Geophysical Research: Atmospheres, 125(4)
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Journal Title:Journal of Geophysical Research: Atmospheres
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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
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Source:Journal of Geophysical Research: Atmospheres, 125(4)
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ISSN:2169-897X;2169-8996;
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Rights Information:Other
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Compliance:Library
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