Jeffrey T. Kiehl, Ph.D., is a Senior Scientist at the National Center for Atmospheric Research, where he is a member of the Climate Change Research Section.

Kiehl has carried out research on effects of stratospheric ozone depletion on Earth's climate. He has also carried out extensive research in the areas of cloud climate interactions. Kiehl has published numerous articles on the effects of aerosols on the climate system. His current research interests include understanding the climates of Earth's past.

Recently Kiehl led the effort to develop comprehensive Community Climate System Model. This effort involved the contributions of more than 100 scientists and software engineers. He has been a member of the National Research Council's Climate Research Committee and the Committee for Global Change Research. He is a member of the NRC Committee on Climate Forcing.

Kiehl has taught graduate courses in atmospheric science at the University of Colorado and at Scripps Institution of Oceanography. He was also co-director of the National Science Foundation’s Science and Technology Center for Clouds, Chemistry and Climate (C4).

He holds a B.S. and an M.S. in theoretical physics and a Ph.D. in Atmospheric Sciences from the State University of New York, Albany, and he holds an M.A. in psychology. He has been a Visiting Fellow at Cambridge University.

Kiehl is particularly interested in how humanity relates to Earth's environment, in particular, how we determine what is valued in the environment and how these values affect environmental policy. He is interested in how environmental dialogue among scientists, the government, media and public can be facilitated though psychological and philosophical concepts.