Accession Number : AD0435824

Title :   TIME CHANGES IN CLOUDS AS SHOWN BY TIROS OBSERVATIONS OVER THE GULF OF MEXICO AND CARIBBEAN SEA DURING THE PERIOD 18-23 JULY 1961,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION

Personal Author(s) : Cramer,William P. ; Thompson,Aylmer H.

Report Date : 01 JAN 1964

Pagination or Media Count : 64

Abstract : A radical change in cloud cover occurred over the Gulf of Mexico between 18 and 20 July 1961. This development occurred when an easterly wave moved westward across the Caribbean Sea into the Gulf and combined with an upper trough of polar origin moving eastward through the lower United States. The super-position of these systems resulted in deepening of the combined system and development of an extensive cloud mass. The cloud mass gradually changed orientation. Analyses using conventional data and meteorological satellite data from TIROS III were used to identify and follow the above systems. Isopleths of relative humidity were used to identify moist air on constant pressure charts. Large values of relative humidity were not always a reliable indication of cloud cover. Use of satellite data improved synoptic continuity and called attention to cloud systems which could have gone undetected between widely spaced data-reporting stations. Examples of such uses are shown. More realistic analyses of conventional meteorological charts resulted from use of TIROS data. (Author)

Descriptors :   (*CLOUD COVER, METEOROLOGICAL SATELLITES), PHOTOGRAPHIC RECONNAISSANCE, PHOTOGRAPHIC ANALYSIS, AIR MASS ANALYSIS, WEATHER FORECASTING, ATMOSPHERIC MOTION, ANTICYCLONES, METEOROLOGICAL PHENOMENA, HUMIDITY, PHOTOINTERPRETATION, METEOROLOGY

Distribution Statement : APPROVED FOR PUBLIC RELEASE