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Proceedings Paper

Microphysical properties of tropical anvil cirrus observed during ACTIVE: a statistical analysis
Author(s): L. Jin; Y. Yin; G. Vaughan; G. Allen; P. Connolly; A. Heymsfield; A. Bansemer
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Paper Abstract

The effect of cirrus cloud on radiative transfer depends on its microphysical properties. The water content and number concentrations of ice particles in tropical anvil cirrus measured during the ACTIVE (Aerosol and Chemical Transport in Tropical Convection) field campaign (from November 2005 to February 2006 in Darwin area, Australia) are analyzed. Some advanced particle probes are utilized during this campaign, including Cloud Imaging Probe (CIP) and Cloud Particle Imager (CPI). A statistical analysis of the fifteen cases (only the slow phase of anvil cirrus with the height ranging from 9.7 to 14.9 km and temperature ranging from -70.4°C to -30.0°C, are considered) shows that the typical value of ice water content (IWC) is 10-2 g m-3, and the number concentrations of ice particles measured by CIP (>100μm) and CPI (>5μm), are 101 and 102 L-1, respectively. The changes in median of IWC in anvil cirri with temperature (or altitude) are examined and compared among different phases of Australian monsoon.

Paper Details

Date Published: 20 August 2008
PDF: 8 pages
Proc. SPIE 7090, Atmospheric Optics: Models, Measurements, and Target-in-the-Loop Propagation II, 70900P (20 August 2008); doi: 10.1117/12.794118
Show Author Affiliations
L. Jin, Nanjing Univ. of Information Science and Technology (China)
Y. Yin, Nanjing Univ. of Information Science and Technology (China)
G. Vaughan, Univ. of Manchester (United Kingdom)
G. Allen, Univ. of Manchester (United Kingdom)
P. Connolly, Univ. of Manchester (United Kingdom)
A. Heymsfield, NCAR (United States)
A. Bansemer, NCAR (United States)


Published in SPIE Proceedings Vol. 7090:
Atmospheric Optics: Models, Measurements, and Target-in-the-Loop Propagation II
Stephen M. Hammel; Alexander M. J. van Eijk; Mikhail A. Vorontsov, Editor(s)

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