Ambarish Karmalkar


Previous academic appointments:

Research Assistant Professor, Dept. of Geosciences and Northeast Climate Adaptation Science Center, UMass Amherst
September 2017 – August 2022.

Research Fellow, Northeast Climate Adaptation Science Center, UMass Amherst
February 2015 to August 2017.

Scientist, Met Office Hadley Centre, Met Office, UK
March 2012 to February 2015.

Postdoctoral Researcher, School of Geography and the Environment, University of Oxford, UK
September 2010 to February 2012.


Global and Regional, Climate Change, Climate Modeling and Downscaling, Quantification of Uncertainty, Climate Impacts and Risk Assessment


  • Ph.D., Geosciences, University of Massachusetts Amherst, 2010
  • M.S., Astronomy, University of Massachusetts Amherst, 2005
  • M.Sc., Physics, University of Mumbai, India, 2001
  • B.Sc., Physics, St. Xavier’s College, University of Mumbai, India, 1999

Selected Publications

Travis-Taylor, L., M. Medina-Elizalde, A. V. Karmalkar, J. Polanco-Martinez et al (2023). Last glacial hydroclimate variability in the Yucatan Peninsula not just driven by ITCZ shifts. Sci Rep 13, 14356. DOI:10.1038/s41598-023-40108-6.

Siren, A. P. K., C. S. Sutherland, A. V. Karmalkar, M. J. Duveneck, T. L. Morelli (2022). Forecasting species distributions: correlation does not equal causation. Diver- sity & Distributions. 

Karmalkar A. V. and Radley M. Horton (2021). Drivers of exceptional coastal warming in the northeastern United States. Nature Climatic Change, 11, 854-860. doi:10.1038/s41558-021-01159-7.

Sexton, D. M., C. F. McSweeney, J. W. Rostron, K. Yamazaki, B. B. Booth, J. M. Mur- phy, L. Regayre, J. S. Johnson, & A. V. Karmalkar (2021). A perturbed parameter ensemble of HadGEM3-GC3. 05 coupled model projections: part 1: selecting the param- eter combinations. Clim. Dyn., 56(11), 3395-3436.

Siddique, R., A. V. Karmalkar, F. Sun, R. Palmer (2020). Hydrological extremes across the Commonwealth of Massachusetts in a changing climate. Journal of Hydrol- ogy: Regional Studies, 32, 100733.

Karmalkar A. V., J. M. Thibeault, A. M. Bryan, A. Seth (2019b). Identifying credible and diverse GCMs for regional climate change studies. Case study: Northeastern United States. Climatic Change. doi:10.1007/s10584-019-02411-y.

Karmalkar A. V., D. M. H. Sexton, J. Murphy, B. B. B. Booth, J. Rostron, and D. Mc- Neall (2019a). Finding plausible and diverse model variants of a climate model. Part II: Development and Validation of Methodology. Clim Dyn. doi:10.1007/s00382-019-04617-3.

Sexton, D. M. H., A. V. Karmalkar, J. Murphy et al (2019). Finding plausible and di- verse model variants of a climate model. Part I: Cheap experiments to assess model per- formance at weather and climate timescales. Clim Dyn. doi:10.1007/s00382-019-04625-3.

Kirchhoff, C. J., J. J. Barsugli, G. L. Galford, A. V. Karmalkar, K. Lombardo, S. Stephenson, M. Barlow, A. Seth, G. Wang (2019). Climate assessments for local action. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-18-0138.1.

Karmalkar A. V. (2018). Interpreting results from the NARCCAP and NA-CORDEX ensembles in the context of uncertainty in regional climate change projections. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-17-0127.1.

Karmalkar, A. V. and R. S. Bradley (2017). Consequences of Global Warming of 1.5 oC and 2 oC for Regional Temperature and Precipitation Changes in the Contiguous United States, PLoS ONE 12(1): e0168697. doi:10.1371/journal.pone.0168697.


  • Environmental Geology (GEO 100G)
  • Introduction to Climatology (GEO/MAF 280)
  • Regional Climate Dyanmics and Modeling (GEO/MAF/NRS 420)
  • Applied Climate Science (GEO 422)