Undergraduate Research Opportunity|
Absorbing aerosols and Asian summer monsoon hydroclimate: Delayed onset from semi-direct effects
Multidecadal variability and secular change of monsoon rainfall over Indo-China in the 20th Century
South Asian summer monsoon dynamics: Origin of the "heat low"; impact of the expanding Thar desert
South Asian Regional Reanalysis: A NOAA - Ministry of Earth Sciences (India) collaboration
Atmospheric teleconnections: Pentad evolution; dynamical mechanisms; hydroclimate impacts
Seasonal evolution of the sea-level pressure anticyclones (e.g., Bermuda High): Role of the midlatitudes
Evolution of the eastern tropical Pacific climate: Ocean-atmosphere coupling; stratus cloud development
US Great Plains hydroclimate variability: Local and remote water sources; GPLLJ variability; SST links
North American Droughts: Analysis and SST-based reconstruction of major 20th Century episodes
Evolution-centric SST analysis: Separation of natural variability and nonstationary secular trend: SST PCs here
Decadal/Multidecadal variability in the Atlantic and Pacific: Surface/subsurface structure of AMO and PDV
Recent surface warming of the Northern Continents: Contribution of multidecadal natural variability
Diagnosis of 3D diabatic heating from ERA-40, ERA-15, and NCEP reanalyses; Monthly Heating here
Dynamical diagnosis of climate variability in NCAR/CCSM, NASA/NSIPP, and IPCC AR5 simulations
1972/73:      All India Higher Secondary Examination,CBSE, New Delhi (national merit list, top five)|
1973-1978:   National Science Talent Scholar, Government of India (national merit list, top five)
1973-1978:   Indian Institute of Technology, Kanpur, India; M.Sc. in Physics (5-year program)
1978-1979:   University of Washington, Seattle; Graduate studies
in Atmospheric Sciences
1979-1984:   Princeton University;
M.A., Ph.D. in Geophysical Fluid Dynamics; Advisor: Isaac M. Held
1984-1986:   Massachusetts Institute of Technology, Cambridge;
Postdoc with Richard S. Lindzen
1987-       :   University of Maryland, College Park; Research Scientist, Research Professor, Professor
2000-2003:   US National Science Foundation; Director, Large-scale Dynamic Meteorology Program
2015-       :   Advisory Panel, National Center for Atmospheric Research (NCAR), Boulder|
2015-       :   Chair, Advisory Panel, Climate and Global Dynamics Laboratory (CGD), NCAR
2014-       :   Chair, AMS Committee on Climate Variability and Change, American Meteorological Society
2013-       :   Distinguished Alumnus Award, Indian Institute of Technology, Kanpur, India
2012-       :   International Commission on Dynamic Meteorology, IAMAS, IUGG
2011-2012:   Lead, CMIP5 Task Force - MAPP Program, NOAA Climate Program Office, Washington DC
2011-2014:   Nominating Committee, UCAR, Boulder
2011-2012:   Drafting Committee, AMS Information Statement on Climate Change
2011-2012:   Board of Atmospheric Sciences and Climate, The National Academies, Washington DC
2008-2010:   Climate Research Committee, The National Academies, Washington DC
2010-       :   Drought Interest Group, World Climate Research Programme, WMO
2007-2010:   US Principal Scientist, US-NOAA and India-MoES Collaborative on South Asian Regional Reanalysis
2006-       :   Fellow, American Meteorological Society, Royal Meteorological Society
2006-2009:   Drought Working Group, US CLIVAR, Washington DC
2005-2006:   Editor, Journal of Climate (an AMS publication)
2005-2006:   Co-Chair, Phenomena, Observations and Synthesis panel, US CLIVAR, Washington DC
2005-2009:   Co-Chair, Climate Variability Working Group, NCAR Community Climate System Model, Boulder CO
2005-2006:   Science Steering Committee, US CLIVAR, Washington DC
2004-2005:   Co-Chair, US CLIVAR Pacific Implementation Panel, Washington DC
2003-2005:   Committee on Climate Variability and Change, American Meteorological Society
2014-2015:   Co-Chair, 27th Conference on Climate Variability and Change, American Meteorological Society
2011-       :   Organizer, The Eugene Rasmusson Lectures, Dept. of Atmospheric & Oceanic Science, University of Maryland|
2010-       :   U Md. Representative, University Corporation for Atmospheric Research (UCAR)
2008-       :   Member, India International Center, New Delhi, India
2007        :   Co-Chair, The Eugene Rasmusson Symposium; Symposium booklet; Gene's Address; AMS Annual Meeting
Eugene Martin Rasmusson (27 February 1929 - 22 March 2015); Obituary
Stephen Baxter (2010, Doctoral Candidate, May 2013; Staff Meteorologist, NOAA/CPC): Supersynoptic winter circulation variability in the Northern extratropics: Pentad evolution and mechanisms. AMS Graduate Fellowship 2010; CMNS Dean's Fellowship 2011; Eugene Rasmusson Graduate Fellowship 2013 |
Rebecca Eager (2010; Scientist, Johns Hopkins APL): Seasonal and interannual variability of Arctic sea-ice: Thermodynamic processes.
Ryan Clark (2012; LT, US Coast Guard): Seasonal and interannual variability of Arctic sea-ice: Dynamical mechanisms.
Ni Dai (2011; co-advised by Phil Arkin, ESSIC): ENSO precipitation structure in observations and climate simulations.
Natalie Thomas (2014; co-advised by Scott Weaver, NOAA CPC): Subseasonal winter circulation teleconnections. National Defense Science and Engineering Graduate Fellow (NDSEG) (2015-2018)
Agniv Sengupta (2015; co-advised by Dr. M. Rajeevan, IITM, Pune, India): SST-based statistical prediction of South Asian summer monsoon rainfall distribution.
Doctoral Theses Advised (2007-Present;  ALL)|
Yongjing Zhao (Ph.D., Summer 2014; defense on 1 August; advisors: Eugenia Kalnay & Sumant Nigam): Application of breeding to nonlinear waves and diurnal cycle in the MARS reanalysis., Big Data Specialist, Capital One Bank, McLean, VA|
Argyro Kavvada (Ph.D., Summer 2014; advisors: Sumant Nigam & Alfredo Ruiz-Barradas): Atlantic Multidecadal Variability: Surface and subsurface thermohaline structure and hydroclimate impacts. Defense and Intelligence Group, Booz Allen Hamilton, NASA Headquarters, Washington DC
Kye-Hwan Kim (Ph.D., May 2013): Statistical Modeling of Atlantic hurricane activity using atmospheric reanalyses and IPCC simulations and projections. Lt. Colonel, South Korea Air Force, Seoul.
Massimo Bollasina (Ph.D., April 2010): Surface and aerosol effects on the South Asian monsoon hydroclimate. Wylie Dissertation Fellowship, Univ. of Maryland Graduate School 2008-2009; Best Student Seminar 2008; Global Climate Change Fellowship, The Green Fund Foundation 2009; Best Doctoral Dissertation 2010. Postdoc, NOAA/GFDL, Princeton University (2010-2013); WCRP Young Scientist Award 2011;WMO Norbert Gerbier-MUMM International Award 2013;
AGU James R. Holton Junior Scientist Award 2013; Assistant Professor, University of Edinburgh, Scotland (2013-).
Bin Guan (Ph.D., October 2008): Pacific decadal SST variability and North American droughts. Wylie Dissertation Fellowship, Univ. of Maryland Graduate School, 2007-2008; Univ. of Maryland Goldhaber Travel Award 2007.
Visiting Scientist, Climate Physics Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena.
Bin Guan in NASA/JPL News.
Ching-Yee Chang (Ph.D., July 2008; advisors: Sumant Nigam & James Carton): Seasonal and interannual ocean-atmosphere variability in the tropical Atlantic: Observed structure and model representation. Univ. of Maryland Goldhaber Travel Award 2007; Visiting Scholar, Department of Geography, University of California, Berkeley.
Megan Linkin (Ph.D., May 2008): North Pacific climate variability and Arctic sea ice. AMS Global Change Travel Scholarship 2005-07; University of Maryland Goldhaber Travel Award 2006. Atmospheric Peril Specialist.
Vice President, Global Partnerships, Swiss Re, Armonk, New York. Megan in NY Times.
Steven Chan (Ph.D., April 2008): On the summertime development of the North Pacific sea-level pressure anticyclone. NASA Earth System Science Fellow, 2004-07; NSF East Asian-Pacific Summer Institute Fellow, 2004.
Scientist, UK Meteorological Office, Exeter, UK.
Scott Weaver (Ph.D., May 2007): The Great Plains Low-level Jet: Structure, variability mechanisms & hydroclimate impacts. Center for Teaching Excellence Distinguished Teaching Assistant Award, 2004-05;  Research Meteorologist, NOAA Climate Prediction Center, College Park;  Presidential Early Career Award for Scientists and Engineers (PECASE) 2012.
University of Edinburgh, School of Geosciences Seminar, Edinburgh (12 March 2015)|
Ansal University: Workshop on Impacts of Aerosols and Changing Climate on Monsoons, Gurgaon, India (12-15 January 2015)
Japan Society for Promotion of Science - Climate Change Symposium, Cosmos Club, Washington, DC (22 February 2013)
Department of Atmospheric Sciences, National Taiwan University (NTU), Taipei (21 September 2012)
NTU Intl Science Conference on Climate Change; Taida Institute for Mathematical Sciences, NTU, Taipei (17-20 Sept. 2012)
National Monsoon Mission: Consultancy Meeting; Indian Institute of Tropical Meteorology, Pune (11-12 September 2012)
The Philander Symposium, Princeton University, NJ (6 September 2012)
LASG Seminar, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China (10 August 2012)
ICDM Workshop on Dynamics & Predictability of High Impact Weather & Climate Events, Kunming, China (6-9 August 2012)
Department of Civil and Environmental Engineering, University of Illinois, Urbana-Champaign (22 June 2012)
WCRP Global Drought Information Workshop, Frascati, Italy (11-13 April 2012)
Atmospheric Science & Physical Oceanography (CASPO) Seminar, University of California, San Diego (5 April 2012)
Institute for Terrestrial & Planetary Atmospheres, State University of New York, Stony Brook (21 March 2012)
Indian Institute of Tropical Meteorology, Pune, India; Golden Jubilee Celebrations, 21-25 February 2012
Department of Civil and Environmental Engineering, University of California, Irvine (19 December 2011)
NRC Workshop on Himalayan Glaciers, Hydrology and Climate Change, Washington, DC (19-20 October 2011)
GEWEX TRACE Workshop: The atmosphere/climate system. Silver Spring, MD (18-20 April 2011)
WCRP Workshop on Drought Predictability and Prediction in a Changing Climate, Barcelona, Spain (2-5 March 2011)
Caribbean GPS Observational Network, COCONet Workshop, San Juan, Puerto Rico (3-4 February 2011)
25th Conference on Hydrology, AMS Annual Meeting, Seattle (27 January 2011)
NRC Committee on Climate, Energy, and National Security, Washington, DC (10-11 January 2011).National Center for Medium Range Weather Forecasting Seminar, Ministry of Earth Sciences, India (5 January 2011)
Nigam, S. and S. Baxter, 2014: Teleconnections. Invited contribution in Encyclopedia of Atmospheric Sciences  (2nd Edition; Editors: Gerald North, Fuqing Zhang and John Pyle) Academic Press, Elsevier Science, London.|
Nigam, S., 2003: Teleconnections. Encyclopedia of Atmospheric Sciences; Editors: J.R. Holton, J.A. Pyle & J.A. Curry; Academic Press, Elsevier Science, London, 2243-2269.
Nigam, S., and E. DeWeaver, 2003: Stationary Waves (Orographic and Thermally forced). Encyclopedia of Atmospheric Sciences; Editors: J.R. Holton, J.A. Pyle & J.A. Curry; Academic Press, Elsevier Science, London, 2121- 2137.
- Nigam, S., B. Guan, and A. Ruiz-Barradas, 2011: Key role of the Atlantic Multidecadal Oscillation in 20th century drought and wet periods over the Great Plains. Geophys. Res. Lett., 38, L16713, doi:10.1029/2011GL048650.
- Nigam, S., and B. Guan, 2011: Atlantic Tropical Cyclones in the 20th Century: Natural Variability and Secular Change in Cyclone Count. Climate Dynamics, 36:2279-2293 DOI 10.1007/s00382-010-0908-x.
- Nigam, S., and M. Bollasina, 2011: Reply to comment by K. M. Lau and K. M. Kim on "'Elevated heat pump' hypothesis for the aerosol-monsoon hydroclimate link: 'Grounded' in observations? J. Geophys. Res. 116, D07204, doi:10.1029/2010JD015246.
- Bollasina, M., and S. Nigam, 2011: The Summertime "Heat" Low over Pakistan / Northwestern India: Evolution and Origin. Climate Dynamics, 37:957-970 DOI 10.1007/s00382-010-0879-y.
- Bollasina, M., and S. Nigam, 2011: Modeling of Regional Hydroclimate Change over the Indian Subcontinent: Impact of the Expanding Thar Desert. J. Climate, 24, 3089-3106.
- Bollasina, M., and S. Nigam, 2011: Increasing desertification of Northwestern India can adversely impact the South Asian monsoon. GEWEX News, 21, No. 2, 8-10.
- Weaver, S.J., and S. Nigam, 2011: Recurrent Supersynoptic Evolution of the Great Plains Low-Level Jet.
J. Climate, 24, 575-582.
- Grodsky, S., J. Carton, S. Nigam, and Y. Okumura, 2012: Tropical Atlantic Biases in CCSM4. J. Climate, 25, 3684-3701.
- Ruiz-Barradas, A, and S. Nigam, 2013: Atmosphere-Land-surface Interactions over the Southern Great Plains: Characterization from Pentad Analysis of DOE-ARM Field Observations and NARR Reanalysis. J. Climate, 26, 875-886.
- Kavvada, A., A. Ruiz-Barradas, and S. Nigam, 2013: AMO's Structure and Climate Footprint in Observations and IPCC AR5 Climate Simulations. Climate Dynamics, DOI 10.1007/s00382-013-1712-1.
- Baxter, S., and S. Nigam, 2013: A Sub-Seasonal Teleconnection Analysis: PNA Development and Its Relationship to the NAO. J. Climate, 26, 6733-6741.
- Ruiz-Barradas, A., S. Nigam, and A. Kavvada, 2013: The Atlantic Multidecadal Oscillation in 20th Century Climate Simulations: Uneven Progress from CMIP3 to CMIP5. Climate Dynamics, DOI 10.1007/s00382-013-1810-0.
- Sheffield, J., et al. (including S. Nigam), 2013: North American Climate in CMIP5 Experiments. Part I: Evaluation of Historical Simulations of Continental and Regional Climatology. J. Climate, 26, 9209-9245.
- Sheffield, J., et al. (including S. Nigam), 2013: North American Climate in CMIP5 Experiments. Part II: Evaluation of Historical Simulations of Intra-Seasonal to Decadal Variability. J. Climate, 26, 9247-9290.
- Nigam, S. and S. Baxter, 2013: Teleconnections. Invited contribution in Encyclopedia of Atmospheric Sciences  (2nd Edition; Editors: Gerald North, Fuqing Zhang and John Pyle) Academic Press, Elsevier Science, London (publication date: November 2014).
- Nigam, S., Y. Zhao, A. Ruiz-Barradas, and T. Zhou, 2013: The South-Flood North-Drought Pattern over Eastern China and the Drying of the Gangetic Plain: Observations, Simulations, and Origin. Invited book chapter in Climate Change: Multidecadal and Beyond (410pp.)  (Editors: Michael Ghil, Mojif Latif, Mike Wallace and C.P. Chang), World Press (publication date: May 2015).
- Zhao, Y., and S. Nigam, 2015: The Indian Ocean Dipole: A Monopole in SST. J. Climate, 28, 3-19.
- Nigam, S. and A. Ruiz-Barradas, 2014: Key Role of the Atlantic Multidecadal Oscillation in 20th Century Drought and Wet Periods over the US Great Plains and the Sahel. Invited book chapter in Dynamics and Predictability of Large-scale High-Impact Weather and Climate Events  (Editors: Jianping Li, Richard Swinbank, Hans Volkert and Richard Grotjahn) Cambridge University Press (publication date: July 2015).
- Baxter, S., and S. Nigam, 2014: Key Role of North Pacific Oscillation/West Pacific Pattern in Generating the Extreme 2013-2014 North American Winter. J. Climate (submitted 19 October; under minor revision).
- Sheffield, J., et al. (including S. Nigam), 2014: Regional Climate Processes and Projections for North America: CMIP3/CMIP5 differences, attribution and outstanding issues. NOAA Technical Report OAR CPO-2.
- Ruiz-Barradas, A., and S. Nigam, 2015: Recent Cooling Trend in the Subsurface North Atlantic. Submitted to Climate Dynamics on 3 April 2015.
Science Cover (28 May 2004)|