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Contrail Microphysics

Heymsfield, A, Baumgardner, D, DeMott, P, Forster, P, Gierens, K and Karcher, B (2010) Contrail Microphysics. Bulletin of the American Meteorological Society, 91 (4). 465 - 472 . ISSN 0003-0007

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Abstract

This article reviews the current state of understanding of the science of contrails: 1) how they are formed, 2) their microphysical properties as they evolve into contrail cirrus and whether their microphysical properties can be distinguished from natural cirrus, and 3) the ice-nucleating properties of soot aerosols and whether these aerosols can nucleate cirrus crystals. Key gaps and underlying uncertainties in our understanding of contrails and their effect on local, regional, and global climate are identified. These include 1) better quantification of the fraction of ice number and mass that survives the vortex phase and the aircraft-specific influences on the vortex dynamics, 2) more accurate measurements of the ice crystal size distributions of contrail cirrus and cirrus in general, which are uncertain because of instrument limitations, and 3) more measurements of the ice-nucleating properties of aircraft exhaust and other ambient ice nuclei in situ under cirrus-forming conditions. Future field campaigns aimed at satisfying measurement needs are proposed

Item Type: Article
Copyright, Publisher and Additional Information: © Copyright 2010 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyright@ametsoc.org.
Keywords: IN-SITU OBSERVATIONS, ICE NUCLEATION, LOWER STRATOSPHERE, RELATIVE-HUMIDITY, UPPER TROPOSPHERE, CIRRUS CLOUDS, SOOT AEROSOLS, PARTICLES, AIRCRAFT, CRYSTALS
Academic Units: The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 05 Sep 2011 15:09
Last Modified: 08 Feb 2013 17:33
Published Version: http://dx.doi.org/10.1175/2009BAMS2839.1
Status: Published
Publisher: AMER METEOROLOGICAL SOC
Identification Number: 10.1175/2009BAMS2839.1
URI: http://eprints.whiterose.ac.uk/id/eprint/43208

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