The main focus of Ambarish’s research is regional climate variability and change, and evaluating uncertainty in climate modeling and projections. He is interested in developing methods to characterize and quantify uncertainties in model projections by using observations and by diagnosing model imperfections. At the NE CACS, he is focussed on producing and communicating physically consistent and spatially coherent information on climate change and associated uncertainties for impacts assessment. In particular, he studies observed and projected climatic changes in the northeast US relevant for hydrological and ecological impacts.
His previous work involved regional climate modeling over Central America and the Caribbean as well as global climate modeling at the Met Office Hadley Center. At the Met Office, he was involved in creating large perturbed parameter ensembles (PPE) in an effort to comprehensively sample key uncertainties in climate model projections.