Accession Number : AD0713468

Title :   PRELIMINARY DATA ON RADAR INDICATORS OF HAIL DANGER CENTERS IN THE GISSAR VALLEY,

Corporate Author : ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER WASHINGTON D C

Personal Author(s) : Sevastyanova,T. V. ; Makhmudov,Kh. M.

Report Date : 26 JUN 1970

Pagination or Media Count : 9

Abstract : Being able to distinguish hail-producing from non-hail-producing clouds in order to determine the probability of modifications occurring in convective clouds, is very important. Radar detection appears to be a more effective method in comparison to the synoptic method. In 1966, the Soviet Union made an attempt in the Gissar Valley to recognize the characteristics which would have permitted distinguishing radar reflections from hail producing and heavy rain producing clouds, as well as from clouds containing no precipitable moisture. Clouds were observed by using circular scanning and verticle profiles. From the profile data of the 197 observation centers the following radar characteristics of the clouds were found: magnitude of maximum reflectivity zm in decibels and its position in the cloud; thickness of the zone of increased reflectivity, its position in the cloud; the altitude of these zones and their temperature characteristics; the magnitude of radar reflectivity. (Author)

Descriptors :   (*HAIL, DETECTION), METEOROLOGICAL RADAR, CLOUDS, PROBABILITY, RADAR CROSS SECTIONS, RAINFALL, MOISTURE, THICKNESS, USSR

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE