Cirrus cloud formation and the role of heterogeneous ice nuclei
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Author(s)
Froyd, Karl D.
Cziczo, Daniel James
Hoose, Corinna
Jensen, Eric J.
Diao, Minghui
Zondlo, Mark A.
Smith, Jessica B.
Twohy, Cynthia H.
Murphy, Daniel M.
Date Issued
2013
Journal
AIP Conference Proceedings
Publisher
American Institute of Physics (AIP)
Citation
Froyd, Karl D., Daniel J. Cziczo, Corinna Hoose, Eric J. Jensen, Minghui Diao, Mark A. Zondlo, Jessica B. Smith, Cynthia H. Twohy, and Daniel M. Murphy. “Cirrus Cloud Formation and the Role of Heterogeneous Ice Nuclei.” Nucleation and Atmospheric Aerosol: 19th international conference : Fort Collins, Colorado, USA, 23-28 June 2013, AIP Conference Proceedings 1527, 976 (2013). © 2013 AIP Publishing.
Version
Final published version
Abstract
Composition, size, and phase are key properties that define the ability of an aerosol particle to initiate ice in cirrus clouds. Properties of cirrus ice nuclei (IN) have not been well constrained due to a lack of systematic measurements in the upper troposphere. We have analyzed the size and composition of sublimated cirrus particles sampled from a high altitude research aircraft using both in situ and offline techniques. Mineral dust and metallic particles are the most enhanced residue types relative to background aerosol. Using a combination of cirrus residue composition, relative humidity, and cirrus particle concentration measurements, we infer that heterogeneous nucleation is a dominant cirrus formation mechanism for the mid-latitude, subtropical, and tropical regions under study. Other proposed heterogeneous IN including biomass burning particles, elemental carbon, and biological material were not abundant in cirrus residuals.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4803436
