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6 Dec 2004

Gavin A. Schmidt

Filed under: — gavin @ 12:00 pm

Gavin Schmidt is a climate modeller at the NASA Goddard Institute for Space Studies in New York and is interested in modeling past, present and future climate. He works on developing and improving coupled climate models and, in particular, is interested in how their results can be compared to paleoclimatic proxy data. He also works on assessing the climate response to multiple forcings, such as solar irradiance, atmospheric chemistry, aerosols, and greenhouse gases.

He received a BA (Hons) in Mathematics from Oxford University, a PhD in Applied Mathematics from University College London and was a NOAA Postdoctoral Fellow in Climate and Global Change Research. He serves on the CLIVAR/PAGES Intersection and the Earth System Modeling Framework Advisory Panels and is an Associate Editor for the Journal of Climate. He was recently cited by Scientific American as one of the 50 Research Leaders of 2004, and has worked on Education and Outreach with the American Museum of Natural History, the College de France and the New York Academy of Sciences. He has over 40 peer-reviewed publications.

More information about his research and publication record can be found here.

All posts by gavin.

Michael E. Mann

Filed under: — mike @ 11:00 am

Dr. Michael E. Mann is a member of the Penn State University faculty, holding joint positions in the Departments of Meteorology and Geosciences, and the Earth and Environmental Systems Institute (ESSI). He is also director of the Penn State Earth System Science Center (ESSC).

Dr. Mann received his undergraduate degrees in Physics and Applied Math from the University of California at Berkeley, an M.S. degree in Physics from Yale University, and a Ph.D. in Geology & Geophysics from Yale University. His research focuses on the application of statistical techniques to understanding climate variability and climate change from both empirical and climate model-based perspectives. Current areas of research include paleoclimate data synthesis and statistical climate reconstruction using climate ``proxy'' data networks, and model/data comparisons aimed at understanding the long-term behavior of the climate system and its relationship with possible external (including anthropogenic) ``forcings'' of climate. Other areas of active research include development of statistical methods for climate signal detection, and investigations of the response of geophysical and ecological systems to climate variability and climate change scenarios.

Dr. Mann was a Lead Author on the "Observed Climate Variability and Change" chapter of the Intergovernmental Panel on Climate Change (IPCC) Third Scientific Assessment Report. He has been organizing committee chair for the National Academy of Sciences 'Frontiers of Science' and has served as a committee member or advisor for other National Academy of Sciences panels. He served as editor for the 'Journal of Climate' and has been a member of numerous international and U.S. scientific advisory panels and steering groups. Dr. Mann has been the recipient of several fellowships and prizes, including selection as one of the 50 leading visionaries in Science and Technology by Scientific American, the outstanding scientific publication award of the National Oceanographic and Atmospheric Administration (NOAA), and recognition by the Institute for Scientific Information (ISI) for notable citation of his refereed scientific research. He is author of more than 80 peer-reviewed and edited publications.

More information about his research and publication record can be found here.

All posts by mike.

Caspar Ammann

Filed under: — caspar @ 10:30 am

Caspar Ammann is a climate scientist working at the National Center for Atmospheric Research (NCAR). Dr. Ammann is interested in the reconstruction of natural climate forcings, natural climate variability, coupled modeling of natural and anthropogenic climate change, and data/model intercomparison. Dr. Ammann got his B.S. from Gymnasium Koeniz (Switzerland), his M.S. from the University of Bern (Switzerland), and a Ph.D. from the Department of Geosciences at the University of Massachusetts.

More information about his research and publication record can be found here.

All posts by caspar.

Rasmus E. Benestad

Filed under: — rasmus @ 10:00 am

I am a physicist by training and work with climate analysis on a Norwegian project called RegClim, and have affiliations with the Norwegian Meteorological Institute ( and the Oslo Climate Group (OCG) [My views here are personal and may not necessarily represent those of RegClim, OCG,, or the mentioned societies]. I have a D.Phil in physics from Atmospheric, Oceanic & Planetary Physics at Oxford University in the United Kingdom. Recent work involve a good deal of statistics (empirical-statistical downscaling, trend analysis, model validation, extremes and record values), but I have also had some experience with electronics, cloud micro-physics, ocean dynamics/air-sea processes and seasonal forecasting. In addition, I wrote the book 'Solar Activity and Earth's Climate' (2002), published by Praxis-Springer, and I sit on the council of the European Meteorological Society, representing the Nordic countries and the Norwegian Meteorology Society.

In my work, I often get questions from media and lay persons about climate change. I believe it is necessary to approach these questions with identifying what we really don't know and what we are more sure about. I believe that some of Karl Popper ideas about falsification can be useful.


Raymond S. Bradley

Filed under: — ray @ 9:45 am

Ray Bradley is Director of the Climate System Research Center ( at the University of Massachusetts, Amherst and a University Distinguished Professor in the Department of Geosciences. His interests are in climate variability and why climate changes, over a wide range of timescales. He did his graduate work at the Institute of Arctic and Alpine Research, University of Colorado, Boulder. He has written or edited ten books on climatic change, and authored more than 100 refereed articles on the subject. In 2004, he received a Doctor of Science (D.Sc) degree from Southampton University (U.K.) for his contributions to the field of paleoclimatology.

Ray Bradley has been an advisor to various government and international agencies, including the U.S., Swiss, Swedish, and U.K. National Science Foundations, the National Oceanic and Atmospheric Administration (NOAA), the U.S. National Research Council, the Inter-Governmental Panel on Climate Change (IPCC), the US-Russia Working Group on Environmental Protection, and the International Geosphere-Biosphere Program (IGBP), Stockholm.

More information about his research and publication record can be found here.

William M. Connolley

Filed under: — william @ 5:00 am

I am a climate modeller with the British Antarctic Survey. I work half time and spend the difference looking after my two children. As an extension of my work, I'm interested in communicating the science of climate change, which is why I'm here.

But I'm also elsewhere: in the newsgroup sci.environment, a rather rough and noisy forum for discussing climate change and other issues; more constructively, the wikipedia project is developing into a useful resource, and my profile is User:William_M._Connolley. My personal vanity site is at And my work page is

One of the people in the picture is me. Guess which.

ps: all my contributions online are released under the GFDL, unless I explicitly note otherwise.

All posts by william.

Stefan Rahmstorf

Filed under: — stefan @ 4:00 am

A physicist and oceanographer by training, Stefan Rahmstorf has moved from early work in general relativity theory to working on climate issues.

He has done research at the New Zealand Oceanographic Institute, at the Institute of Marine Science in Kiel and since 1996 at the Potsdam Institute for Climate Impact Research in Germany (in Potsdam near Berlin).

His work focuses on the role of ocean currents in climate change, past and present.

In 1999 Rahmstorf was awarded the $ 1 million Centennial Fellowship Award of the US-based James S. McDonnell foundation.

Since 2000 he teaches physics of the oceans as a professor at Potsdam University.

Rahmstorf is a member of the Panel on Abrupt Climate Change and of the Advisory Council on Global Change of the German government.

More information about his research and publication record can be found here.

All posts by stefan.

Eric Steig

Filed under: — eric @ 3:00 am

Eric Steig is an isotope geochemist at the University of Washington in Seattle. His primary research interest is use of ice core records to document climate variability in the past. He also works on the geological history of ice sheets, on ice sheet dynamics, on statistical climate analysis, and on atmospheric chemistry.

He received a BA from Hampshire College at Amherst, MA, and M.S. and PhDs in Geological Sciences at the University of Washington, and was a DOE Global Change Graduate fellow. He was on the research faculty at the University of Colorado and taught at the University of Pennsylvania prior to returning to the University of Washington 2001. He has served on the national steering committees for the Ice Core Working Group, the Paleoenvironmental Arctic Sciences initiative, and the West Antarctic Ice Sheet Initiative, all sponsored by the US National Science Foundation. He is an editor of the journal Quaternary Research. He has published more than 60 peer-reviewed articles in international journals.

More information about his research and publication record can be found here.

All posts by eric.

Thibault de Garidel

Filed under: — thibault @ 2:00 am

Dr. Thibault de Garidel-Thoron is currently a post-doctoral associate at the Institute of Marine and Coastal Sciences at Rutgers University. His main scientific interest is to reconstruct past tropical climate changes using micropaleontological and geochemical proxies from oceanic sediment records.

Dr. de Garidel received his Bachelor’s degree in Earth Sciences from the Université Lyon I, France, completed a Master in the Université Bordeaux I, France and a Ph.D. in Geosciences at CEREGE, Université Paul Cézanne (a.k.a. Aix-Marseille III).

More information about his research and publication record can be found here.

David Archer

Filed under: — david @ 1:30 am

David Archer is a computational ocean chemist at the University of Chicago. He has published research on the carbon cycle of the ocean and the sea floor, at present, in the past, and in the future. The ocean contains fifty times more carbon than does the atmosphere, and the ocean controls the CO2 concentration of the atmosphere on time scales of thousands to hundreds of thousands of years. The atmospheric pCO2 that the ocean chooses depends on all kinds of things, such as the effect of phytoplankton on the chemistry of surface waters, and the effect of CaCO3 dissolution and production on the pH of the ocean. Dr. Archer has worked on the ongoing mystery of the low atmospheric CO2 concentration during glacial time 20,000 years ago, and on the fate of fossil fuel CO2 on geologic time scales in the future, and its impact on future ice age cycles, ocean methane hydrate decomposition, and coral reefs. Archer is writing a textbook for non-science major undergraduates called "Global Warming: Understanding the Forecast" to be published by Blackwell. More information can be found here.

All posts by david.

Raymond T. Pierrehumbert

Filed under: — raypierre @ 1:00 am

Pierrehumbert Portrait
Raymond Pierrehumbert is the Louis Block Professor in Geophysical Sciences at the University of Chicago, having earlier served on the atmospheric science faculties of MIT and Princeton. He is principally interested in the formulation of idealized models which can be brought to bear on fundamental phenomena governing present and past climates of the Earth and other planets. His recent research interests have included water vapor feedback, baroclinic instability, the Neoproterozoic Snowball Earth, the climate of Early Mars, and methane hydrological cycles on Titan. He is director of the Climate Systems Center, a US National Science Foundation Information Technology Research project aimed at bringing modern software design techniques to the problem of climate simulation. He has also collaborated with David Archer on the University of Chicago's global warming curriculum.

He received an A.B. degree in Physics from Harvard, was then a Knox Fellow in the Department of Applied Mathematics and Theoretical Physics at Cambridge University, and completed his PhD on hydrodynamic stability theory at MIT, in the Department of Aeronautics and Astronautics. He was a lead author of the IPCC Third Assessment Report, and a co-author of the National Research Council study on abrupt climate change. He is a Fellow of the American Geophysical Union.

Pierrehumbert is currently writing a book on comparative planetary climate, "Climate from First Principles," to be published by Cambridge University Press.

More information about his research, including a complete publication list, can be found here.

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