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lmd_Laval1995_abstracts.html

1995 .

(1 publication)

R. C. Raghava, K. Laval, R. Sadourny, and J. Polcher. Atmospheric response to tropical denuding of vegetation. Atmospheric Environment, 29:1963-2000, 1995. [ bib | DOI | ADS link ]

Two simulations of atmospheric circulations during June, July and August 1988 have been made with LMD Atmospheric General Circulation Model using a classified vegetation global cover with and without the tropical vegetation separately. The initial conditions prepared from ECMWF analysed data were used, while the Reynolds' monthly blended analysis, i.e., the blend of in situ, AVHRR satellite and ice data, were taken to prescibe the sea surface temperatures. The global charts of mean monthly precipitation and associated velocity potentials at 200 and 850 mb have been compared and analysed for June, July and August 1988. The temporal evolutions of precipitation averaged over a specific region of Indian summer monsoon during its regime from onset to retreat have also been discussed. Consequently, a pronounced impact of tropical vegetation on the precipitation has been observed so as to characterise a forest as one of the local rain inducing agents. Moreover, the tropical vegetation appears to modulate the Indian summer monsoon also for the contributive precipitation over India.

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