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Forum Speakers

Dr. Robert Cahalan  will provide the lecture at the Student event on March 21.  He is the Chief of NASA’s Goddard Space Flight Center’s Climate and Radiation Laboratory which includes 60 world-class climate scientists who advance the understanding of aerosols and their impact on climate from observations and models.  Dr. Cahalan's research focuses on climate, solar radiation, and cloud structure.  He is also the Project Scientist for NASA’s SORCE satellite mission which is monitoring the Sun’s output.  Dr. Cahalan is President of the International Radiation Commission.  He is also an Adjunct Professor at University of Maryland and a NASA representative to US Global Change Research Program/Climate Change Research Initiative.

Dr. Cahalan's bio


Dr. Robert Cahalan

Dr. Ralph Kahn is a Senior Research Scientist at NASA's Goddard Space Flight Center. He spent 20 years as a Research Scientist and Senior Research Scientist at the Jet Propulsion Laboratory, where he studied climate change on Earth and Mars, and also led the Earth & Planetary Atmospheres Research Element. He is the chief aerosol scientist for NASA’s Earth Multi-angle Imaging SpectroRadiometer (MISR) instrument on the Terra mission. He focuses on using MISR's unique observations, combined with other data and numerical models, to learn about wildfire smoke, desert dust, volcano and air pollution particles, and to apply the results to regional and global climate-change questions.  


More about NASA instrumentMISR

PUMAS - Practical Uses of Math And Science: 

Dr. Ralph Khan

Dr. Claire Parkinson is the Climate Change Senior Scientist for NASA’s Aqua mission, which is collecting data on a wide variety of atmospheric, ocean, land, and ice variables. Claire has been a climatologist at NASA Goddard Space Flight Center since July 1978, with a research emphasis on sea ice and its role in the global climate system. Her research has involved numerical modeling and field work in both the Arctic and the Antarctic but mostly has been centered on satellite data analysis. She and her colleagues have detailed the significant loss of sea ice in the Arctic since the late 1970s and the lesser increase of sea ice in the Antarctic over the same period. Claire has authored books on satellite observations, remote sensing, climate change, and the history of science.

More information about Dr. Parkinson

More information about ice

Dr. Claire Parkinson

Dr Compton Tucker is a Senior Earth Scientist at NASA Goddard Space Flight Center in the Biospheric Sciences Branch Laboratory for Terrestrial Physics. He has broad experience in remote sensing research and applications. His research interests are focused on Earth Systems Research through the use of satellite remote sensing. He is Director of the Global Monitoring and Modeling Studies group at GSFC. He has on-going projects on tropical forest monitoring, remote sensing of disease vectors and famine early warning. He has taught remote sensing in the Department of Geology at the University of Maryland. He is assigned to the US Climate Change Science Program Office.

Dr. Tucker’s bio

Dr. Compton Tucker

Additional Panel Members

 Ernest Hilsenrath retired from NASA’s Goddard Space Flight Center in August 2005 as a research scientist who specialized in atmospheric composition measurements.  Re-employed by the University of Maryland Baltimore County as a Professor of Practice with an assignment to NASA Headquarters as a Program Scientist for the EOS Aura mission in the Earth Science Division.  Retired again in December 2009 but remains a Fellow at the University.  His research experience was observations of the Earth’s atmosphere including ozone climatology and depletion from variety of platforms such as sounding rockets, balloons, aircraft, satellites, and the Space Shuttle.   He is now a member of the Climate Change Initiative of Howard County.

Ernest Hilsenrath

Gray Maxwell is Senator Cardin’s (MD) Floor Manager responsible for leading and organizing consideration of a bill or other measure on the Senate floor which the Senator initiated or supports.  Mr. Maxwell has worked for several other US Senators as floor manager and as a senior speech writer.

Gray Maxwell

Ms. Mandy Warner is climate and air quality specialist for the Environmental Defense Fund.  She provides policy and technical analysis on a variety of clean air and public health issues. She engages with Congress, EPA, and a wide array of stakeholders to advocate, secure, and maintain clean air protections. She also assists in development of strategies to advance clean air and climate protections. She has a Master of Public Affairs, School of Public and Environmental Affairs, Indiana University.

Ms. Warner’s bio

Ms. Mandy WarnerMs. Mandy Warner

Dr. Clark Weaver received his Ph.D. in Atmospheric Science from Colorado State University in 1987. After which he joined the Graduate School of Oceanography at University of Rhode Island and studied the transport of mineral dust to ocean drilling sites using paleoclimate models. Clark has most recently been communicating climate science to staff members on Capitol Hill as a representative for the American Geophysical Union (AGU). He has been working at NASA Goddard’s Atmospheric Chemistry and Dynamics Branch since 1991.

Dr. Weaver’s bio

Dr. Clark Weaver