Scientist Profile

Mr. Sandeep Narayanasetti

: Scientist C

: +91-(0)20-25904817

: +91-(0)20-25865142

Email ID
: sandeep[dot]cat[at]tropmet[dot]res[dot]in

Earth System Modeling and Research
Degree University Year Stream
M.Sc (Five year Integrated) University of Hyderabad 2012 Chemistry

 Physical Oceanography

 Climate Science

 Earth System Modeling and Research

 Ocean Modeling

Award Name Awarded By Awarded For Year
Year Designation Institute
2017-Present Scientist C Indian Institute of Tropical Meteorology, Pune
2014-2016 Scientist B Indian Institute of Tropical Meteorology, Pune
2012-2013 Trainee Scientist Indian Institute of Tropical Meteorology, Pune

Research Highlight

Using observations and long term simulations of an ocean-biogeochemical coupled model, we investigate the biological response in the southern subtropical Indian Ocean (SIO) associated with Ningaloo Niño and Niña events. Ningaloo events have large impact on sea surface temperature (SST) with positive SST anomalies (SSTA) seen off the west coast of Australia in southern SIO during Ningaloo Niño and negative anomalies during Niña events. Our results indicate that during the developing period of Ningaloo Niño, low chlorophyll anomaly appears near the southwest Australian coast concurrently with high SSTA and vice-versa during Niña, which alter the seasonal cycle of biological productivity. The difference in the spatiotemporal response of chlorophyll is due to the southward advection of Leeuwin current during these events. Increased frequency of Ningaloo Niño events associated with cold phase of Pacific Decadal Oscillation (PDO) resulted in anomalous decrease in productivity during Austral summer in the SIO in the recent decades.

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