- James Hansen
James E. Hansen (born March 29, 1941 in Denison, Iowa), heads the NASA Goddard Institute for Space Studies in New York City, a part of the Goddard Space Flight Center in Greenbelt, Maryland, Earth Sciences Division. He is currently an adjunct professor in the Earth and Environmental Sciences department at Columbia University.
- Fred Singer
Siegfried Frederick Singer (born September 27, 1924 in Vienna) is an electrical engineer and physicist. He is best known as President and founder (in 1990) of the Science & Environmental Policy Project, which disputes the prevailing scientific opinion on climate change. Singer is also skeptical about the connection between CFCs and ozone depletion, between UV-B radiation and melanoma and between second hand smoke and lung cancer.
- Richard Lindzen
Richard Siegmund Lindzen, Ph.D., (born February 8, 1940) is an atmospheric physicist and the Alfred P. Sloan Professor of Meteorology at the Massachusetts Institute of Technology. Lindzen is known for his research in dynamic meteorology, especially planetary waves. He has been a critic of some anthropogenic global warming theories and the political pressures surrounding climate scientists. He wrote an op-ed for the "Wall Street Journal" in April, 2006, …
- Patrick Michaels
Patrick J. Michaels, Ph.D., (born February 15, 1950) is a Research Professor of Environmental Sciences at the University of Virginia. He has been the university's Climatologist for Virginia since 1980. His professional specialty was the influence of climate on agriculture. In interviews Michaels has said that he does not contest the basic scientific principles behind greenhouse warming and acknowledges that global mean temperature has increased in recent decades, …
- Stephen Schneider
Stephen H. Schneider (born c. 1945) is Professor of Environmental Biology and Global Change (and Professor by Courtesy in the Department of Civil and Environmental Engineering) at Stanford University, and a Senior Fellow at the Center for Environment Science and Policy of the Freeman Spogli Institute for International Studies. He has served as a consultant to Federal Agencies and/or White House staff in the Nixon, Carter, Reagan, George H. W. Bush, …
- Roy Spencer
Roy Spencer is a principal research scientist for University of Alabama in Huntsville. In the past, he served as Senior Scientist for Climate Studies at NASA's Marshall Space Flight Center in Huntsville, Alabama. Dr. Spencer is the recipient of NASA's Medal for Exceptional Scientific Achievement. He is principally known for his satellite-based temperature monitoring work, for which he was awarded the American Meteorological Society's Special Award.
- Michael Mann
Michael Mann is a well-known American climatologist and author of more than 80 peer-reviewed journal publications. He has attained public prominence as lead author of a number of articles on paleoclimate which feature a graph of temperature trends dubbed the "hockey stick graph" for the shape of the trend line. In August 2005 he was appointed Associate Professor at Pennsylvania State University, in the Department of Meteorology and Earth and Environmental Systems Institute, …
- John Christy
John R. Christy is a climate scientist whose chief interests are global climate change, satellite sensing of global climate, and paleoclimate. He is best known, jointly with Roy Spencer, for his version of the satellite temperature record. He is a professor of atmospheric science and director of the Earth System Science Center at the University of Alabama in Huntsville (UAH). He was appointed Alabama's State Climatologist in 2000.
- David Phillips
David Phillips, C.M. is generally regarded as one of Canada's most knowledgeable weather experts. He is a Senior Climatologist for Environment Canada and a spokesperson for the Meteorological Service of Canada and author of many books. He has also received several awards for his work. Books by Phillips are "The Climates Of Canada", "Blame It On The Weather" and "The Day Niagara Falls Ran Dry". He is also the creator of Canada’s most popular calendar, …
- Bjørn Lomborg
Bjørn Lomborg is an Adjunct Professor at the Copenhagen Business School and a former director of the Environmental Assessment Institute in Copenhagen. He became internationally-known for his best-selling and controversial book "The Skeptical Environmentalist". After the book's publication, members of the Danish and international scientific community accused Lomborg of "scientific dishonesty", although Lomborg is not a trained scientist, and does not claim to be.
- Gavin Schmidt
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.
- Reid Bryson
Reid Bryson is an American atmospheric scientist, geologist and meteorologist. He was born in Michigan in 1920. In 1948, he became chairman of the Department of Meteorology at the University of Wisconsin. He became the first director of the Institute for Environmental Studies in 1970. He has written more than 230 articles and five books, including "Climates of Hunger", which won the Banta Medal for Literary Achievement.
- Robert Balling
Robert C. Balling, Jr. is the former director of the Office of Climatology and is a professor of geography at Arizona State University. He received his Ph.D. in geography from the University of Oklahoma in 1979. Balling is a declared "global warming skeptic." However, in Balling and Sen Roy (2005) he writes: "There is substantial evidence that a non-solar control has become dominant in recent decades. The buildup of greenhouse gases and/or some other global-scale feedback, …
- William Connolley
William Michael Connolley (born April 12, 1964) is a climate modeller. Connolley is a Senior Scientific Officer in the Physical Sciences Division in the Antarctic Climate and the Earth System project at the British Antarctic Survey.
- Marcel Leroux
Marcel Leroux is a French climatologist, a former Professor of Climatology at Jean Moulin University in France, and director of the Laboratory of Climatology, Risk, and Environment. Marcel Leroux argues on his book "Global Warming: Myth or Reality? The Erring Ways of Climatology" that the case for global warming is based on models which, with their insufficiencies in the understanding and explanation of weather phenomena, …
- David Legates
David Russell Legates is the Delaware State Climatologist, and an associate professor at the University of Delaware. Professor Legates is known for using systematic examination of the scientific method used in climatological studies, in order to determine the validity of the data and the conclusions set forth in such studies. He is best known for his contrarian opinion on the causes and effects of global warming.
- Stefan Rahmstorf
Stefan Rahmstorf (born February 22, 1960) is a German oceanographer and climatologist. Since 2000, he has been a Professor of Physics of the Oceans at Potsdam University. He holds a PhD in oceanography from Victoria University of Wellington (1990). His work focuses on the role of ocean currents in climate change. In 1999 Rahmstorf was awarded the $ 1 million Centennial Fellowship Award of the US-based James S. McDonnell foundation.
- Roger A. Pielke
Roger A. Pielke (Sr.) is a meteorologist with interests in climate variability and climate change, environmental vulnerability, numerical modeling, atmospheric dynamics, land/ocean - atmosphere interactions, and large eddy/turbulent boundary layer modeling. He particularly focuses on mesoscale weather and climate processes but also investiages on the global, regional, and microscale.
- Henrik Svensmark
Henrik Svensmark is a physicist at the Danish National Space Center in Copenhagen who studies the effects of cosmic rays on cloud formation. Henrik Svensmark and Eigil Friis-Christensen were the first to suggest (in 1997) a link between galactic cosmic rays and global warming. The small-scale processes related to this link were studied in a laboratory experiment done at the Danish National Space Center (paper published in the Proceedings of the Royal Society A", …
- Roger A. Pielke
Roger Pielke is the former director of the Center for Science and Technology Policy Research (2001-2007). He has been on the faculty of the University of Colorado since 2001 and is a professor in the Environmental Studies Program and a fellow of the Cooperative Institute for Research in the Environmental Sciences (CIRES). His current areas of interest include understanding the politicization of science, decision making under uncertainty, and policy education for scientists.
- Hans von Storch
Hans von Storch (born 1949 in Nordfriesland) is a German climate scientist. He is Professor at the Meteorological Institute of the University of Hamburg, and (since 2001) Director of the Institute of Coastal Research at the GKSS Research Centre in Geesthacht, Germany. He is a member of the advisory boards of the journals "Journal of Climate" and "Annals of Geophysics".
- Petr Chylek
Petr Chylek is a researcher for Space and Remote Sensing Sciences at Los Alamos National Laboratory. Prior to becoming a government researcher in 2001, Chylek was Professor of Physics and Atmospheric Science in the graduate program at Dalhousie University in Halifax, Canada where he continues as an Adjunct Professor. Chylek has published over 100 scientific papers in remote sensing, atmospheric radiation, climate change, cloud and aerosol physics, …
- Ray Bradley
Raymond S. Bradley is a climatologist. Bradley is a University Distinguished Professor in the Department of Geosciences at the University of Massachusetts Amherst. He is also the research director of the Climate System Research Center. Bradley's work indicates that the warming of Earth's climate system in the twentieth century is inexplicable via natural mechanisms.
- Robert Watson
Dr Robert T. Watson is a British-born U.S. scientist who has worked on atmospheric pollution issues since the 1980s (including ozone depletion, global warming) and paleoclimatology.
- Craig D. Idso
Craig D. Idso is the founder and chairman of the board of the Center for the Study of Carbon Dioxide and Global Change. He is the brother of Keith E. Idso and son of Sherwood B. Idso. Dr. Idso received his B.S. in Geography from Arizona State University, his M.S. in Agronomy from the University of Nebraska - Lincoln, and his Ph.D. in Geography from Arizona State University, where he studied as one of a small group of University Graduate Scholars. Dr.
- Sherwood B. Idso
Sherwood B. Idso is the President of the Center for the Study of Carbon Dioxide and Global Change. Previously he was a Research Physicist with the U.S. Department of Agriculture's Agricultural Research Service at the U.S. Water Conservation Laboratory in Phoenix, Arizona; and an Adjunct Professor in the Departments of Geology, Geography, and Botany and Microbiology at Arizona State university.
- Phil Jones
Philip D. Jones (1952-) is a climatologist at the University of East Anglia, notable for maintaining of the time series of the instrumental temperature record ; this work figured prominently in the IPCC TAR SPM. He is director of the Climatic Research Unit and a Professor in the School of Environmental Sciences at the University of East Anglia in Norwich. His research interests are instrumental climate change, palaeoclimatology, …
- James Annan
James Annan is a scientist involved in climate prediction. He is a member of the Global Warming Research Program at Frontier Research Centre for Global Change which is associated with the Earth Simulator in Japan. He also has views on disc brakes for bicycles
- Drew Shindell
Dr. Drew Shindell is an ozone specialist and climatologist at the NASA Goddard Institute for Space Studies. His research is concerned with global climate change, climate variability, and atmospheric chemistry. He uses climate models to investigate chemical changes such as the depletion of the ozone layer, climate changes such as global warming, and the connections between these two.
- Rajendra K. Pachauri
Dr. Rajendra Kumar Pachauri (born August 20, 1940, Nainital, India) is an economist and environmental scientist who has served as the chair of the Intergovernmental Panel on Climate Change (IPCC) since 2002. Pachauri is also the director general of the Energy and Resources Institute in New Delhi, an institution devoted to researching and promoting sustainable development.
- John Williams
John Williams is an Australian scientist whose life work has been in the study of hydrology and the use of water in the landscape and farming, including land salinity. His story was told in part on the Australian Broadcasting Corporation's TV documentary series, "Australian Story", on 6 June 2005. transcript
- Robert E. Davis
Robert E. Davis is an Associate Professor of Climatology at the University of Virginia's Department of Environmental Sciences. He is an editor of World Climate Report and is a skeptic regarding global warming. He is associated with the Independent Institute
- Gordon McBean
Dr. Gordon McBean is a Canadian climatologist who serves as chairman of the board of trustees of the Canadian Foundation for Climate and Atmospheric Sciences. He is a professor at the University of Western Ontario and Chair for Policy in the Institute for Catastrophic Loss Reduction. Previously he was the Assistant Deputy Minister of Meteorological Service of Canada. In 1995, McBean gave a speech to the World Meteorological Organization on global warming.
- Myles Allen
Dr Myles R Allen is head of the Climate Dynamics group at University of Oxford's Atmospheric, Oceanic and Planetary Physics Department. He is the Principal Investigator of Climateprediction.net and is principally responsible for starting this project. He has worked at the Energy Unit of the United Nations Environment Programme, the Rutherford Appleton Laboratory in Oxfordshire, and the Massachusetts Institute of Technology.
- David Parker
David Parker is head of climate monitoring at the Hadley Centre. He has published extensively on the land and marine temperature record and its consistency. In 2002 he was an organiser of a "Workshop on Advances in the Use of Historical Marine Climate Data". Most recently, he has published a paper in Nature showing that the urban heat island effect has not affected the historical temperature record. This paper has been commented on by Roger Pielke Sr, et al.
- Paul J. Crutzen
Paul Jozef Crutzen (born December 3, 1933, Amsterdam) is a Dutch Nobel prize winning atmospheric chemist. Crutzen is best known for his research on ozone depletion. He lists his main research interests as "Stratospheric and tropospheric chemistry, and their role in the biogeochemical cycles and climate". He currently works at the Department of Atmospheric Chemistry at the Max Planck Institute for Chemistry, in Mainz, …
- Jean Jouzel
Jean Jouzel, (born 1947) is a French glaciologist and climatologist. He is a world renowned specialist in major climatic shifts based on his analysis of Antarctic and Greenland ice.
- Hubert Lamb
Hubert Horace Lamb (1913 - 1997) was an English climatologist who founded the Climatic Research Unit in 1971 in the School of Environmental Sciences at the University of East Anglia. Most of his scientific life Lamb spent at the Meteorological Office, UK, where he started as a Technical Officer by special merit promotion. His responsibilities were in the fields of long range weather forecasting, world climatology and climate change.
- Kevin E. Trenberth
Dr. Kevin E. Trenberth is head of the Climate Analysis Section at the National Center for Atmospheric Research. He was a lead author of the 2001 and 2007 IPCC Scientific Assessment of Climate Change (see IPCC Fourth Assessment Report) and serves on the Scientific Steering Group for the Climate Variability and Predictability (CLIVAR) program. In addition, he serves on the Joint Scientific Committee of the World Climate Research Programme, …
- William Ruddiman
William F. Ruddiman is a palaeoclimatologist and Professor Emeritus at the University of Virginia. He is known principally for his "early anthropocene" hypothesis, the idea that human-induced changes in greenhouse gases did not begin in the eighteenth century with advent of coal-burning factories and power plants of the industrial era, but date back to 8000 years ago, triggered by intense farming activities of our early agrarian ancestors.