Open Access Digital Repository of Ministry of Earth Sciences, Government of India

Global features of sea-level pressure distribution in April and July associated with contrasting situations of Indian summer monsoon

Kumar, KR and Hingane, LS (1986) Global features of sea-level pressure distribution in April and July associated with contrasting situations of Indian summer monsoon. Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 95 (2). pp. 299-309.

[img]
Preview
PDF
534.pdf - Published Version

Download (1MB) | Preview

Abstract

Global sea-level pressure distribution has been analysed for the months of April and July for 5 years of contrasting situations of Indian summer monsoon, comprising of two drought years (1972 and 1974), a flood year (1975) and two normal monsoon years (1970 and 1973). Mean monthly sea-level pressure data at about 400 stations have been used in the study. Prominent features of pressure departures from long-term normals have also been noted. It is observed that the month of April shows more prominent contrasting features than July. In April, the high pressure centres over USSR and the North Pacific move considerably eastward during poor monsoon years, while a breakaway cell of Icelandic Low goes deep south. Both the high pressure areas over south Indian Ocean and Australia are stronger in good monsoon years. In July, the subtropical high pressure zone over the southern Indian Ocean is stronger and the Australian high is more eastward, in good monsoon years.

Item Type: Article
Additional Information: Copyright of this article belongs to Indian academy of Science
Uncontrolled Keywords: drought; global sea level pressure; pressure departures; southwest monsoon
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 02 May 2015 10:01
Last Modified: 02 May 2015 10:01
URI: http://moeseprints.incois.gov.in/id/eprint/1227

Actions (login required)

View Item View Item