Raj Saha


Interdisciplinary Lecturer in Environmental Geophysics


Hedge 214

Research/Teaching site

Bio | Teaching | Research | Publications | CV


Dr. Saha builds simple mathematical models to study a variety of phenomena, with a particular focus on climate. His approach is interdisciplinary, combining tools from mathematical theory, computation, and lately, building sensors and instruments. He is an ardent believer in DIY and open source knowledge.

PhD, Physics, 2011. University of North Carolina at Chapel Hill
MS, Astronomy, 2006. University of North Carolina at Chapel Hill
BS, Physics, 2003. Bates College


Dr. Saha teaches introductory and intermediate courses in climate, mathematical modeling, and occasionally courses in computer science and physics. His courses generally involve applying modeling approaches to problems and he strives for his students to develop systems thinking and intuition.

Fall 2018 The Living Planet (FYS 462), Computational Physics (PHYS 216)
Winter 2019 Polar Climates (GEPH 111), Dynamical Climate (GEPH 220)
Short Term 2019 Electronics (PHYS s30)


Past courses and syllabi.


Dr. Saha’s research focus has been in using simple dynamical models to pin down the fundamental ingredients behind some observed phenomena. The tools of Dynamical Systems Theory have a wide range of applicability across diverse systems. Some of Dr. Saha’s current areas of research include understanding feedbacks in the Arctic permafrost, variability of the Indian Monsoon, mechanisms behind the mid-Pleistocene transition, and synchrony in bioluminescent organisms.

  1. Roberts, A. and Saha, R. (2016), Relaxation oscillations in an idealized ocean circulation model, Climate Dynamics. doi:10.1007/s00382-016-3195-3
  2. Saha, R. (2015), Millennial-scale oscillations between sea ice and convective deep water formation, Paleoceanography, 30, 1540–1555, doi:10.1002/2015PA002809.
  3. Rial, J. and Saha, R. (2011), Modeling Abrupt Climate Change as the Interaction Between Sea Ice Extent and Mean Ocean Temperature Under Orbital Insolation Forcing, in Abrupt Climate Change: Mechanisms, Patterns, and Impacts, American Geophysical Union, Washington, D. C.. doi: 10.1029/2010GM001027.
  4. Rial, J. and Saha, R. (2009), Understanding Abrupt Climate Change: The Importance of Orbital Insolation. Climate Change Congress Meeting, Copenhagen. Vol. 1, pp 94-97. doi: 10.1088/1755-1307/6/1/012013
  5. Rial, J. and Saha, R (2008), Stochastic Resonance, Frequency Modulation and the Mechanisms of Abrupt Climate Change in the Arctic, First International Symposium on Arctic Research, Drastic Change Under Global Warming, Miraikan, Tokyo, 94–97.