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Annihilation of the Somali upwelling system during summer monsoon

Chatterjee, A and Kumar, BP and Prakash, S and Singh, P (2019) Annihilation of the Somali upwelling system during summer monsoon. Scientific Reports, 9 (1). p. 7598.

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Somali upwelling system during northern summer is believed to be the largest upwelling region in the Indian Ocean and has motivated some of the early studies on the Indian Ocean. Here we present results from observations and ocean model to show that the upwelling along the Somali coast is limited to the early phase of the summer monsoon and later primarily limited to the eddy dominated flows in the northern and some extent in the southern part of the coast. Major part of the Somali coast (~60 of the entire coastal length) shows prominent downwelling features driven by offshore negative windstress curl and subsurface entrainment mixing. Further, we show that the surface cooling of coastal waters are dominantly driven by subsurface entrainment and surface heat fluxes. These findings not only augment the existing knowledge of the Somali upwelling system, but also have serious implications on the regional climate. Most importantly, our analysis underscores the use of alongshore winds only to project future (climate driven) changes in the upwelling intensity along this coast.

Item Type: Article
Additional Information: Copyright of this article belongs to Author(s)
Uncontrolled Keywords: article; climate; coastal waters; cooling; destruction; heat; sea; seashore; summer
Subjects: Meteorology and Climatology
Depositing User: INCOIS Library
Date Deposited: 18 Sep 2019 08:50
Last Modified: 18 Sep 2019 08:50

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