Association of Sea Surface Temperature of Different Nino Regions with Summer Monsoon Rainfall over Indo-Gangetic Plains

  • R. Bhatla Department of Geophysics Banaras Hindu University, Varanasi
  • Sandhya Singh Department of Botany, Banaras Hindu University, Varanasi
  • B. Mandal Department of Geophysics Banaras Hindu University, Varanasi
  • M. Singh Department of Geophysics Banaras Hindu University, Varanasi
Keywords: Indian summer monsoon rainfall, IGP, Nino regions.

Abstract

The aim of the present study is to find out the possible association between the sea surface temperature (SST) of different Nino regions of equatorial Pacific Ocean with summer monsoon rainfall, zonal wind and convection over Indo-Gangetic Plains (IGP) during 30 years (1982-2011) period. The summer monsoon rainfall of IGP shows inverse relationship with SST anomaly for various Niño regions during May, April-May and previous spring season. On the other hand, outgoing longwave radiation (OLR) of IGP is positively associated with SST of all Nino regions. Nino-4 SST has more effect on convection of IGP during March, April-May (AM) and March-May (MAM) time period. The magnitude of correlation coefficient (CC) has been found significantly higher for the SST anomaly over Nino-4 region. SST of Nino-4 region has been used as a foreteller of monsoon over IGP.
Published
2024-02-24
How to Cite
Bhatla, R., Singh, S., Mandal, B., & Singh, M. (2024). Association of Sea Surface Temperature of Different Nino Regions with Summer Monsoon Rainfall over Indo-Gangetic Plains. Vayumandal, 42(1), 21-29. Retrieved from https://vayumandal.imetsociety.org/index.php/Vayumandal/article/view/136
Issue
Vol 42 No 1 (2016): VAYUMANDAL
Section
Research Paper

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