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Inter-annual relationship between Atlantic sea surface temperature anomalies and Indian summer monsoon

Rajeevan, M and Sridhar, L (2008) Inter-annual relationship between Atlantic sea surface temperature anomalies and Indian summer monsoon. Geophysical Research Letters, 35 (21).

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Abstract

In this study, the simultaneous inter-annual relationships between SST anomalies over the Northwest Atlantic Ocean and southwest monsoon rainfall over the monsoon core region have been examined using monthly SST and atmospheric data for the period 1951-2005. Statistical analyses reveal significant inter-annual simultaneous relationship between the SST anomalies over North Atlantic and rainfall over the monsoon core region, but with significant epochal variations. The relationship has become stronger after mid-1970s when the El Nino-Indian monsoon relationship has weakened. Positive SST anomalies over the North Atlantic Ocean shift the North Atlantic Jet northwards and the associated circulation changes in the upper troposphere influence Indian monsoon through the circumglobal teleconnection across central Asia. The present study, thus highlights the important role of North Atlantic Ocean as an important source of inter-annual variability of the Indian summer monsoon.

Item Type: Article
Additional Information: Copyright of this article belongs to American Geophysical Union.
Uncontrolled Keywords: Atmospheric optics; Atmospherics; Coastal zones; Submarine geophysics; Sulfur compounds, Atlantic seas; Atmospheric datum; Circulation changes; Core regions; EL Nino; Indian monsoons; Indian summer monsoons; Inter annuals; Inter-annual variabilities; North atlantic; North atlantic oceans; Northwest atlantic; Southwest monsoons; Sst anomalies; Statistical analysis; Teleconnection; Upper tropospheres, Atmospheric temperature, air-sea interaction; monsoon; oceanic circulation; rainfall; sea surface temperature; statistical analysis; summer; temperature anomaly, Atlantic Ocean; Atlantic Ocean (North)
Subjects: Meteorology and Climatology
Depositing User: Administrator ePrints@MoES
Date Deposited: 12 Jun 2016 03:21
Last Modified: 12 Jun 2016 03:21
URI: http://moeseprints.incois.gov.in/id/eprint/4039

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