ENSO–Indian summer monsoon teleconnections

Kulkarni, Ashwini and Koteswara Rao, Kundeti and Joshi, Manish K. and Rai, Archana and Darshana, P. (2021) ENSO–Indian summer monsoon teleconnections. In: Indian Summer Monsoon Variability. Elsevier, pp. 51-68. ISBN 978-0-12-822402-1

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Abstract

The El Niño-Southern Oscillation (ENSO) is the dominant driver of climate variability globally. ENSO cycle describes the fluctuations in the sea surface temperature in the eastern equatorial Pacific and has a periodicity of 2–7 years. El Niño (warm phase) and La Niña (cold phase) are two opposite phases of the ENSO cycle. Generally, ENSO–Indian summer monsoon (ISM) rainfall has a concurrent inverse relationship, though there is no clear correspondence. None of the El Niños (La Niñas) are associated with excess (deficit) monsoon over India. Not all El Niños have a similar impact on ISM rainfall, it depends on several factors such as genesis, developing phase, and life span of the ENSO episode. During the global warming period, since the climatic shift in 1975/76, Indian Ocean Dipole events and the central Pacific El Niño (El Niño Modoki) events have been increasing consistently, which have contributed to changes in the east Pacific ENSO–ISM relationship in the 1980s and 1990s period.

Item Type:	Book Section
Authors:	Kulkarni, Ashwini and Koteswara Rao, Kundeti and Joshi, Manish K. and Rai, Archana and Darshana, P.
Editors:	Editors Email ORCID Chowdary, Jasti S UNSPECIFIED https://orcid.org/0000-0003-4300-7715 Parekh, Anant UNSPECIFIED UNSPECIFIED Gnanaseelan, C. UNSPECIFIED UNSPECIFIED
Document Language:	Language English
Subjects:	Natural Sciences > Earth sciences Natural Sciences > Earth sciences > Geology, hydrology, meteorology Natural Sciences > Earth sciences > Geology, hydrology, meteorology > Climatology and weather
Divisions:	Azim Premji University - Bengaluru > School of Climate Change and Sustainability
Full Text Status:	None
URI:	http://publications.azimpremjiuniversity.edu.in/id/eprint/7445
Publisher URL:	https://doi.org/10.1016/B978-0-12-822402-1.00024-7

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