Cohen, Jason Blake

Assistant Professor
Department of Civil and Environmental Engineering

Postal Address: Department of Civil and
  Environmental Engineering,
  National University of Singapore
  1 Engineering Drive 2, E1A 07-03
  Singapore 117576
Tel: (65) 6601 2696
Office: E1A-05-04


Dr. Jason Blake Cohen is currently an Assistant Professor in the Department of Civil and Environmental Engineering. His research work is mainly on Climate Change. His specific foci are related to the use and development of models, integrating models with data, representation of non-linear processes such as urbanization and land-use change, and interactions between aerosols/Haze and the climate system.

For an example of work that Dr. Cohen is currently engaging (and looking for undergraduates for FYP projects, or PhD level students): (1) the yearly "Haze" events we face here, and how these are connected with properties of the present day and recent past land surface, atmosphere, and climate system; and (2) how these important non-CO2 related climate agents, such as Black Carbon and Organic Carbon aerosols, and Ozone (all components of the "Haze") are expected to impact the future climate system (such as long-term temperature and rainfall changes).

Prior to starting at NUS, Dr. Cohen held the following relevant positions: (a) Postdoctoral Associate, Singapore-MIT alliance for Research and Technology Center (2010-2012); (b) a Research Assistant, Teaching Associate, and Teaching Assistant, Massachusetts Institute of Technology (2003-2010); (c) Lecturer, Roxbury Community College (2005); (d) Research Assistant, California Institute of Technology (2000-2002); (e) Lecturer, Teaching Assistant, and Senior Tutor, University of California, Berkeley (1998-2000); and (f) Professional Instructor for many different academic chess programs (1994-2010)

Positions Held

  • 2012- present, Assistant Professor, CEE, National University of Singapore


  • Sc.D., Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 2010
  • M.S., Environmental Science and Engineering, California Institute of Technology, 2002
  • A.B., Applied Mathematics [Minor: Geography], University of California, Berkeley, 2000

Honours & Awards

  • Awarded a "Young Scientist Travel Grant" to attend the 2012 IGAC Open Science Conference
  • Brunei Times Highlights Work on Haze/Climate Connections (May 10, 2012):
  • MIT News Highlights Work on Urban/Climate Connections (August 29, 2011):
  • Received "Martin Fellows for Sustainability" and "Linden Earth System Fellowship" both from the Massachusetts Institute of Technology
  • Received the "Alumni Leader-Scholar Award" from the University of California, Berkeley
  • Received the "Robert C. Byrd Award" (1996), awarded by the Governor of the State of New Jersey
  • "United States of America Amateur Team Chess Champion" (1996)
  • "United States of America Amateur Individual Chess Champion" (1995)

Professional Activities

  • Convener for Session "A042: Improving Aerosol Properties and Interaction With Radiation and Clouds, by Combining Observations and Models", American Geophysical Union 2012 Meeting

Research Interests

  • "The Impact of Land Use Change and Fires on the Climate System" (PI) [in processing]
  • "Impact of Fires on the Climate and Atmosphere over the Maritime Continent" (PI) [in processing]

Selected Publications - Books

Recent Peer Reviewed Articles

  1. Cohen, J.B. and Prinn, R.G. (2011) Development of a fast, urban chemistry metamodel for inclusion in global models, Atmos. Chem. Phys., 11, 7629-7656, doi:10.5194/acp-11-7629-2011, 2011.
  2. Cohen, J.B., Prinn, R.G., and Wang C. (2011). The Impact of detailed urban-scale processing on the composition, distribution, and radiative forcing of anthropogenic aerosols. Geophys. Res. Lett., 38, L10808, doi:10.1029/2011GL047417.
  3. Cohen, J.B. and Wang C. (2012). A New Estimate of Global Black Carbon Emissions Using a Top-Down Kalman Filter Approach (Submitted, Under Review)
  4. Cohen, J.B. and Wang C. The impact of detailed urban-scale processing of aerosols and precursors on the equilibrium climate system (IN PREPERATION)
  5. Cohen, J.B. and Wang C. The impact of optimized Black Carbon emissions on the equilibrium climate system (IN PREPERATION)
  6. Cohen, J.B., Xi X., and Wang C. Using remotely sensed data and a coupled aerosol-chemistry-climate model to quantify the contribution of South East Asian forest fires (IN PREPARATION)

Recent Conference and Scientific Meeting Presentations

  1. Cohen, J.B. (2012) Climate system impacts associated with Kalman Filter optimized time-varying black carbon emissions, IGAC 2012 Meeting, Beijing, 17-21 Sept.
  2. Cohen, J.B. (2012) Fires, Haze, and Climate in Southeast Asia: More than just CO2. 2nd Sub-Regional Ministerial Steering Committee on Transboundary Haze (MSC) Forum, Brunei, May 8-10.
  3. Cohen, J.B. (2012) Estimating emissions and climate impacts of Asian black carbon sources, by combining models and measurements. Inception Workshop on 'Reducing the Impacts of Black Carbon and other Short-Lived Climate Forcers', ICIMOD, Kathmandu, April 1-3.
  4. Cohen, J.B. and Wang C. (2011) Climate system impacts associated with the sensitivity of black carbon emissions, processing, interactions with other aerosols, and atmospheric feedbacks, Abstract #A33E-07 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.
  5. Cohen, J. B. and C. Wang (2011) Optimizing Black Carbon Emissions using a Kalman Filter, Session 7, 10th AeroCom Workshop, Fukuoka, Japan, Oct. 3-6
  6. Cohen, J. B. and C. Wang (2011) The Impact of Optimized BC Emissions on Direct Radiative Forcing and Climate over Asia and Oceania, Abstract #AS07-A019, 2011 AOGS, Taiwan, Aug. 8-12
  7. Cohen, J. B. and C. Wang (2011) The climatic impact on clouds and rainfall due to using an ensemble Kalman Filter to optimize BC emissions, Abstract #5535, IUGG, Australia, June 28-July 7
  8. Cohen, J.B., Wang C., and Prinn, R.G. (2010) The impact of detailed urban-scale processing on the aerosol direct effect and its impacts on the climate, Abstract #B11J-05 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.
  9. Cohen, J.B., Wang C., and Prinn, R.G. (2010) The Impact of Detailed Urban Scale Processing on the Simulation of the Global Distribution and Radiative Effects of Anthropogenic Aerosols, Eos Trans. AGU, 91(26), West. Pac. Geophys. Meet. Suppl., Abstract #A31A-121
  10. Cohen, J.B., Wang C., and Prinn, R.G. (2009) The impact of detailed urban scale processing on the simulation of the concentration and distribution of aerosols in Asia, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract #A14A-05

Last Updated on 6 July, 2012 by Department of Civil Enginering