Low-level air flow circulation over the Arabian Sea during the summer monsoon as deduced from satellite-tracked superpressure balloons. Part II-Analysis of the flow field

✍ Scribed by Daniel Cadet; Paul Olory-Togbé

• Publisher: John Wiley and Sons
• Year: 1978
• Tongue: English
• Weight: 410 KB
• Volume: 104
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49710444209

✦ Synopsis

Abstract

Trajectories of superpressure balloon flights in the tropical boundary layer over the Indian Ocean during the 1975 summer monsoon are analysed in relation to conventional meteorological observations, mainly ship reports. An assimilation of these randomly distributed observations is performed to compute mean gridded fields of wind and pressure during four periods defined according to monsoon activity over the Indian sub‐continent. Mean cloud cover fields over a 2.5° × 2.5° square are also determined from satellite images. The main features of the low‐level monsoon circulation are deduced from the two sets of data; these are in conflict with earlier conclusions deduced from the interpretation of local conditions. The differences in meteorological fields between the various phases of the activity of the monsoon over India are studied and discussed.