Please use this identifier to cite or link to this item: http://nopr.niscpr.res.in/handle/123456789/25639
Title: Interannual variability of precipitable water vapour—ENSO/LNSO signal
Authors: Sarma, A A L N
Bhaskar, V Vizaya
Keywords: Precipitable water vapour;ENSO event;LNSO event;El Nino;La Nina
Issue Date: Feb-2005
Publisher: CSIR
PACS No.: 92.40.Ea; 92.60.Jq
Abstract: Knowledge of the quantity of precipitable water vapour content (PWVC) in space and time over a region is of fundamental importance in hydro-meteorological studies. In the present investigation using the radiosonde data for a 17-year period from 1984 to 2000, the mean monthly precipitable water for Visakhapatnam (lat. 17°43'N, long. 83° 14'E) is evaluated for the layers surface to be 500 mbar. The inter-annual and intra-seasonal variation of precipitable water vapour and its relation to the mean monthly rainfall have been discussed. Seasonal cycles of precipitable water during ENSO (El Nino Southern Oscillation) and LNSO (La Nina Southern Oscillation) periods along with normal are reported. The paper also deals with cycling rates of moisture flux and percentage occurrence of rainfall from the corresponding amount of precipitable water vapour content.
Page(s): 50-55
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.34(1) [February 2005]

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