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Some Aspects of the Life History, Structure and Movement of Monsoon Depressions

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Monsoon Dynamics

Part of the book series: Contributions to Current Research in Geophysics (CCRG) ((CCRG))

Summary

Monsoon depression is one of the most important synoptic scale disturbances on the quasi-stationary planetary scale monsoon trough over the Indian region during the summer monsoon season (June to September). Salient features of the climatology of the depressions with regard to frequency of cyclogenesis, life expectancy, horizontal scale and tracks are discussed. Rainfall aspects of the depressions are discussed in some detail and the role of local, dynamical and sub-synoptic scale factors are brought out. Work done on the life history such as formation, intensification and maintenance of depressions has been reviewed based on synoptical and theoretical approaches. Structure of the depression based on composited, synoptical and dynamical studies is discussed. Wind circulation, thermal and moisture patterns, vertical motion field, vorticity budget etc., of a recent case study are brought out in some detail. The problem of movement of the depression against the low level basic westerly wind is briefly discussed and the results of several numerical and climatological prediction models are presented.

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Authors and Affiliations

  1. Indian Institute of Tropical Meteorology, Poona, 411 005, India

    D. R. Sikka

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© 1978 Springer Basel AG

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Sikka, D.R. (1978). Some Aspects of the Life History, Structure and Movement of Monsoon Depressions. In: Monsoon Dynamics. Contributions to Current Research in Geophysics (CCRG). Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-5759-8_21

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  • DOI: https://doi.org/10.1007/978-3-0348-5759-8_21

  • Publisher Name: Birkhäuser, Basel

  • Print ISBN: 978-3-0348-5760-4

  • Online ISBN: 978-3-0348-5759-8

  • eBook Packages: Springer Book Archive

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