Accession Number : AD0714431

Title :   Some Characteristics of the Distribution of Cloud Cover on Days With and Without Precipitation,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Lebedev,A. N.

Report Date : 01 SEP 1970

Pagination or Media Count : 15

Abstract : Observational data for the period 1935-1955 have been used to compute the mean characteristics of the cloud cover on days with and without precipitation in layers of given gradations of heights and the probability of these gradations. It was found that the geographical and seasonal distribution of these data differ appreciably on days with and without precipitation. The average cloud cover when the lower cloud boundary is 100-1, 000 meters is spring and autumn and 300-600 meters in summer on days with precipitation is usually appreciably greater than on days without precipitation. In individual months in some regions, the average cloud cover is 1.5-2.0 time greater than the average cloud cover for rainless days. It is characteristic that clouds above 1,500 meters are largely observed only on days without precipitation. Gradations of heights of the lower cloud boundary of 0-50 and 50-100 meters are observed on both rainy and rainless days. (Author)

Descriptors :   (*CLOUD COVER, DISTRIBUTION), ATMOSPHERIC PRECIPITATION, PROBABILITY, FOG, MEASUREMENT, TABLES(DATA), USSR

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE