Dual-wavelength millimeter-wave radar measurements of cirrus clouds [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1996.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- pages 279-281 : digital, PDF file
- Additional Creators
- United States. Department of Energy. Office of Energy Research and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- In April 1994, the University of Massachusetts` 33-GHz/95-GHz Cloud Profiling Radar System (CPRS) participated in the multi-sensor Remote Cloud Sensing (RCS) Intensive Operation Period (IOP), which was conducted at the Southern Great Plains Cloud and Radiation Testbed (CART). During the 3-week experiment, CPRS measured a variety of cloud types and severe weather. In the context of global warming, the most significant measurements are dual-frequency observations of cirrus clouds, which may eventually be used to estimate ice crystal size and shape. Much of the cirrus data collected with CPRS show differences between 33-GHz and 95-GHz reflectivity measurements that are correlated with Doppler estimates of fall velocity. Because of the small range of reflectivity differences, a precise calibration of the radar is required and differential attenuation must also be removed from the data. Depolarization, which is an indicator of crystal shape, was also observed in several clouds. In this abstract we present examples of Mie scattering from cirrus and estimates of differential attenuation due to water vapor and oxygen that were derived from CART radiosonde measurements.
- Report Numbers
- E 1.99:conf-9503140--
conf-9503140-- - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
04/01/1996.
"conf-9503140--"
"DE96010942"
5. atmospheric radiation measurement (ARM) science team meeting, San Diego, CA (United States), 19-23 Mar 1995.
McIntosh, R.E.; Sekelsky, S.M.; Firda, J.M.
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