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Seasonal behaviour of NCEP-NCAR longwave cloud radiative forcing and its relationship with all-India summer monsoon rainfall

Munot, AA and Patil, SD and Preethi, B and Singh, N (2011) Seasonal behaviour of NCEP-NCAR longwave cloud radiative forcing and its relationship with all-India summer monsoon rainfall. International Journal of Remote Sensing, 32 (5). pp. 1421-1430.

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Abstract

Using National Center for Environmental Prediction-National Center for Atmospheric Research (NCEP-NCAR) longwave cloud radiative forcing (LWCRF) reanalysis at the top of the atmosphere (TOA) for the period 1949-2006, the seasonal behaviour of the LWCRF and its relationship with the all-India summer monsoon rainfall (AISMR) during the winter (December-January-February, DJF), pre-monsoon (March-April-May, MAM) and summer monsoon (June- July-August-September, JJAS) seasons has been examined. The LWCRF over the Bay of Bengal region (15-20° N and 87.5-92.5° E) during the pre-monsoon season (MAM) is found to be significantly related to AISMR. The correlation coefficient (CC) between AISMR and LWCRF is 0.419, significant at the 1 level. The composite anomalies for excess minus deficient rainfall years of the LWCRF during MAM over the same region strongly support a significant relationship betweenLWCRF and AISMR. Thus, theLWCRFover the Bay of Bengal region in the pre-monsoon season appears to be a good indicator of the forthcoming monsoon rainfall.

Item Type: Article
Additional Information: Copyright of this article belongs to Taylor and Francis.
Uncontrolled Keywords: Bay of Bengal; Cloud radiative forcing; Correlation coefficient; Long waves; Monsoon rainfall; National center for atmospheric researches; National center for environmental predictions; Pre-monsoon; Reanalysis; Summer monsoon; Summer monsoon rainfall; Top of the atmospheres, Climatology; Rain, Atmospheric thermodynamics, cloud radiative forcing; longwave radiation; monsoon; rainfall; seasonal variation; summer, Bengal
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 19 Jul 2014 07:16
Last Modified: 19 Jul 2014 07:16
URI: http://moeseprints.incois.gov.in/id/eprint/739

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