Accession Number : AD0780427

Title :   Atmospheric Structure Observed by FM-CW Radar at the Salton Sea in the California Desert.

Descriptive Note : Research and development rept. Aug 72-Jul 73,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : Jensen,D. R. ; Noonkester,V. R. ; Richter,J. H.

Report Date : 11 MAR 1974

Pagination or Media Count : 32

Abstract : The observational results of a scanning mobile FM-CW radar sounder, operated in an arid environment at the Salton Sea Navy Base, California, for a period of five days, are reported. The returns are compared with returns taken with a fixed (vertically pointing) FM-CW radar sounder operating in a marine environment in San Diego, California. Echoes obtained at Salton Sea were found to be predominately low-level, surface-based, convective-like structures apparently resulting from vertical mixing induced by daytime surface heating. Relatively few elevated layers were observed during the short measurement period in the arid environment as compared to observations in San Diego. Waves resembling K-H instabilities were observed. Insect flight patterns were found to be influenced by atmospheric structure and may be used as tracers for vertical atmospheric motion. Multiple layering showing wave motions was also observed and is common to both environments. These radar findings were supported by simultaneous radiosondes. (Author)

Descriptors :   *ATMOSPHERIC SOUNDING, *RADAR CROSS SECTIONS, CONTINUOUS WAVE RADAR, FREQUENCY MODULATION, RADIOSONDES, CONVECTION(ATMOSPHERIC), ATMOSPHERIC MOTION, RAIN, INSECTS

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE