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A Study of Cirrus Ice Particle Size Distribution Using TC4 ObservationsAn analysis of two days of in situ observations of ice particle size spectra, in convectively generated cirrus, obtained during NASA s Tropical Composition, Cloud, and Climate Coupling (TC4) mission is presented. The observed spectra are examined for their fit to the exponential, gamma, and lognormal function distributions. Characteristic particle size and concentration density scales are determined using two (for the exponential) or three (for the gamma and lognormal functions) moments of the spectra. It is shown that transformed exponential, gamma, and lognormal distributions should collapse onto standard curves. An examination of the transformed spectra, and of deviations of the transformed spectra from the standard curves, shows that the lognormal function provides a better fit to the observed spectra.
Document ID
20110016134
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Tian, Lin
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Heymsfield, Gerald M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Li, Lihua
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Heymsfield, Andrew J.
(National Center for Atmospheric Research Boulder, CO, United States)
Bansemer, Aaron
(National Center for Atmospheric Research Boulder, CO, United States)
Twohy, Cynthia H.
(Oregon Univ. Eugene, OR, United States)
Srivastava, Ramesh C.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2010
Publication Information
Publication: Journal of the Atmospheric Sciences
Volume: 67
Issue: 1
ISSN: 0022-4928
Subject Category
Meteorology And Climatology
Distribution Limits
Public
Copyright
Other

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