Accession Number : AD0617726

Title :   TROPOPAUSE PENETRATIONS BY CUMULONIMBUS CLOUDS - II.

Descriptive Note : Scientific rept.,

Corporate Author : ATMOSPHERIC RESEARCH AND DEVELOPMENT CORP KANSAS CITY MO

Personal Author(s) : LONG,Michael J.

Report Date : APR 1965

Pagination or Media Count : 72

Abstract : This report presents a four year climatology of penetrations of the tropopause by thunderstorm clouds at ten locations in the United States. WSR-57 radar data for 1961 through 1964 were used to determine the vertical extent of the penetrations. Most penetrations occurred during spring and summer during the hours of normal maximum thunderstorm activity. Tropopause penetrations (more than 5,000 feet) are summarized by geographical areas, by months and on a duirnal basis. There was no relationship between penetrations and the number of thunderstorms. Three years of data from USAF radar stations abroad suggest a very small number of penetrations in the tropics and high mid-latitudes. Changes in the height and character of the tropopause near penetrations were studied in two serial sounding situations. (Author)

Descriptors :   (*TROPOPAUSE, CUMULONIMBUS CLOUDS), (*CUMULONIMBUS CLOUDS, TROPOPAUSE), CLIMATE, THUNDERSTORMS, PENETRATION, ATMOSPHERES, METEOROLOGICAL RADAR, METEOROLOGY

Distribution Statement : APPROVED FOR PUBLIC RELEASE