De-Zheng Sun, Ph.D.
Cooperative Institute for Research in Environmental Sciences
University of Colorado/ NOAA Earth System Research Laboratory
Physical Science Division
325 Broadway, Boulder, Colorado, USA
Voice: (303) 497-6272
FAX: (303) 497-6449
Dr. Sun and his collaborators pioneered the study of the role of El Niño events in the long-term heat balance of the tropical Pacific, delineated the relationship between the magnitude of El Niño events and the meridional differential heating, quantified the rectification effect of El Niño events into the mean climate using a range of models, and advanced the understanding of the role of ocean-atmosphere coupling in general and El Niñno events in particular in regulating the tropical maximum Sea Surface Temperature. He is currently developing a theory that can predict the response of El Niño events to the rise of CO2 and other man-made greeenghouse gases in the atmosphere. He is also developing a nonlinear theory for climate change on the decadal and longer time-scales based on the findings about the rectification of El Niño events.
Dr. Sun's work involves evaluating the fidelity of the state-of-the-art climate models to Nature and collaborating with modellers at the National Center for Atmospheric Research and NOAA's Geophysical Fluid Dynamics Laboratory to remove model deficiencies--those deficiencies in clouds, water vapor, and rainfall in particular. Dr. Sun is also engaged in an collaborative effort with climate forecasters at the National Center For Enviornemntal Predicitons (NCEP) to improve climate forecasts--the forecasts of El Niño in particular-- through the NCEP climate forecast system. (For a more complete description of the line of work by Dr. Sun and his collaborators, click here). Dr. Sun has published his work in
Dr. Sun received his Ph.D. in Meteorology from MIT and had worked in the Geophysical Fluid Dynamics Laboratory of Princeton University and the Global and Climate Dynamics Division of National Center for Atmospheric Research before joining CIRES. He has taught both undergraduate and graduate courses in climate change sciences in University of Colorado at Boulder. In collaborations with colleagues, he has produced a monograph "Climate Dynamics: Why Does Climate Vary?" published by American Geophysical Union, in order to underscore the role of dynamics and nonlinearity in climate change. Dr.Sun also concerns the public education about climate change and has talked to the media frequently on this subject. (For the 2010 interview with Collin Schults of AGU in which he warns of the potential danger of presenting to the public an overly simplified scenario for global warming--a monotonic increase in the global mean temperature in response to the rise of CO2--and of the self-imposed constraint of the current prevailing theoretical framework to understand the climatic impact of anthropogenc forcing, click here).
Dr. De-Zheng Sun is a citizen of the United States. He also goes by the name of Daniel Sun.
- Ph.D., Meteorology, Massachusetts Institute of Technology, September 1992.
- M.S., Physical Oceanography, Academia Sinica, Beijing, China, July 1987.
- B.S., Meteorology, Nanjing University, Nanjing, China, July 1985.