Share Email Print

Proceedings Paper

Seasonal And Diurnal Changes In Cloud Obscurations To Visible And Infrared Energy Transmission
Author(s): Donald Wylie; Chris Grund; Edwin Eloranta
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Statistics on cloud cover and the attenuation of radiation by clouds are being compiled from satellite and lidar data. The multispectral data from the GOES/VAS satellite allow the definition of cloud altitudes and infrared emissivities. Thin transmissive cirrus clouds can be detected with this technique which have been mis-identified in other studies as low altitude clouds or completely undetected because of the complications of underlying clouds or land backgrounds. A summary of cloud cover statistics over the last two years is presented in Section 3. The cloud infrared emissivity derived by this technique is a measure of the attenuation of infrared radiation by the clouds. It has been theoretically related to the total vertical optical thickness in the visible spectrum by Hansen l. This relationship is predicted using a multiple scattering model of cirrus cloud sized particles. With this relationship we plan to convert our cloud emissivity data to optical thickness estimates so that radiative attenuation estimates can be made in both the visible and infrared parts of the spectrum. We are in the process of verifying the relationship using lidar and satellite data. The first results of this verification study are shown in Section 4.

Paper Details

Date Published: 8 August 1989
PDF: 8 pages
Proc. SPIE 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere, (8 August 1989); doi: 10.1117/12.951745
Show Author Affiliations
Donald Wylie, University of Wisconsin-Madison (United States)
Chris Grund, University of Wisconsin-Madison (United States)
Edwin Eloranta, University of Wisconsin-Madison (United States)

Published in SPIE Proceedings Vol. 1060:
Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere
Robert A. Fisher; LeRoy E. Wilson, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?