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Numerical weather prediction in low latitudesBased on the results of a number of numerical prediction experiments, the differential heating between land and ocean is an important and critical factor for investigation of phenomenon such as the onset of monsoons over the Indian subcontinent. The pre-onset period during the month of May shows a rather persistent flow field in the monsoon region. At low levels the circulation exhibits anticyclonic excursions over the Arabian Sea, flowing essentially parallel to the west coast of India from the north. Over the Indian subcontinent the major feature is a shallow heat low over northern India. As the heat sources commence a rapid northwestward movement toward the southern edge of the Tibetan Plateau, an interesting configuration of the large-scale divergent circulation occurs. A favorable configuration for a rapid exchange of energy from the divergent to the rotational kinetic energy develops. Strong low level monsoonal circulations evolve, attendant with that the onset of monsoon rains occurs. In order to test this observational sequence, a series of short-range numerical prediction experiments were initiated to define the initial heat sources.
Document ID
19860014659
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Krishnamurti, T. N.
(Florida State Univ. Tallahassee, FL, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1985
Publication Information
Publication: NAS-NRC Proceedings of the First National Workshop on the Global Weather Experiment, Vol. 2, Pt. 1
Subject Category
Meteorology And Climatology
Accession Number
86N24130
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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