subramanian
Assistant Professor
ATOC

My research interests are varied and are mainly focused on climate dynamics, predictability, data assimilation, and geophysical fluid dynamics.

The main focus of my work is currently in gaining a better understanding of processes that impact extreme weather especially on subseasonal-to-seasonal timescales as well as better modeling of the Madden-Jullian Oscillation and its teleconnections using global climate models (such as the Community Earth System Model (CESM) and ECMWF IFS). I am actively working on stochastic parameterization for better representation of physical processes in climate models. Another focus of my work is on data assimilation in coupled ocean-atmosphere models. In the past, I have worked on assimilating ship cruise and satellite observed data into a regional eddy-permitting ocean model of the South East Pacific to better understand mesoscale ocean processes in this region using a regional ocean model called ROMS. I also study nonlinear data assimilation techniques to improve upon the Ensemble Kalman Filter and Adjoint-based methods in data assimilation into simplified nonlinear models of the atmosphere and climate.

I am also a visiting scholar in the Predictability of Weather and Climate group in the Physics Dept. at the University of Oxford. I graduated from the Climate Research Division at Scripps Institution of Oceanography, UC San Diego in 2012.  I previously obtained M.Sc. (Engg.) from Indian Institute of Science in 2006 and B.Tech from IIT Madras in 2004.