Accession Number : AD0285238

Title :   A THUNDERSTORM IN CALM AIR

Corporate Author : AMERICAN METEOROLOGICAL SOCIETY BOSTON MASS

Personal Author(s) : REUSS,J.H.

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : By the evaluation of seven single photographs of a thundercloud in connection with the data of the aerologic ascent, the following features of the cloud are determined: its shape (in calm air), maximal height, volume, position, movement and vertical velocity of wind, which yield the amount of condensing water the cloud is fed with. The latter as well as the clouds movement are being compared with precipitation as to time, position and quantity, known by local recordings. The shape and the way of expansion of the anvil roughly explain the local distribution of the vertical wind velocities, and by these, the relative local distribution of rain. It appears to be remarkable, finally, that this as well as two other thunderclouds originating in very similar weather situations, b ild up over an industrial town, which is located close to a river or sea. (Author)

Descriptors :   *CUMULONIMBUS CLOUDS, ATMOSPHERIC PRECIPITATION, CHEMICAL PRECIPITATION, CLOUDS, CONVECTION, PHOTOGRAPHIC ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE