Director of the Program in Atmospheres, Oceans, and Climate at the Massachusetts Institute of Technology (MIT)
Pro to the question "Is Human Activity Primarily Responsible for Global Climate Change?"
"[C]oncentrations of the two most important long-lived greenhouse gases, carbon dioxide and methane, have been increasing since the dawn of the industrial era; carbon dioxide alone has increased by about 40 percent. These increases have been brought about by fossil fuel combustion and changes in land use...
[G]lobal temperatures have been rising for roughly the past century and have so far increased by about 1.4 F. The rate of rise of surface temperature is... larger than any natural change we have been able to discern for at least the past 1,000 years.
Disputes within climate science concern the nature and magnitude of feedback processes involving clouds and water vapor, uncertainties about the rate at which the oceans take up heat and carbon dioxide, the effects of air pollution, and the nature and importance of climate change effects such as rising sea level, increasing acidity of the ocean, and the incidence of weather hazards such as floods, droughts, storms, and heat waves. These uncertainties are reflected in divergent predictions of climate change made by computer models...
But when the dust settles, what we are left with is the evidence. And, in spite of all its complexity and uncertainties, we should not lose track of the simple fact that theory, actual observations of the planet, and complex models - however imperfect each is in isolation - all point to ongoing, potentially dangerous human alteration of climate."
"Despite Uncertainties, Need to Confront Climate Change Is Clear," Boston Globe, Feb. 15, 2010
Experts Individuals with PhDs, heads of government, members of federal legislative bodies, and individuals with graduate degrees and significant post-graduate involvement in fields relevant to the study of climate. [Note: Experts definition varies by site.]
Involvement and Affiliations:
Director of the Program in Atmospheres, Oceans, and Climate at the Massachusetts Institute of Technology (MIT), 1997-present
Professor, Department of Earth, Atmospheric, and Planetary Sciences, MIT, 1997-present
Elected member, National Academy of Sciences, 2007-present
Member, Board on Atmospheric Sciences and Climate, National Academy of Sciences, 2003-2010
Recipient, Carl-Gustaf Rossby Research Medal, American Meteorological Society, 2007
Member, Council of the American Meteorological Society, 1999-2002
Fellow, American Meteorological Society, 1995
Recipient, Banner I. Miller Award (with Richard Rotunno), American Meteorological Society, 1992
Professor and Director, Center for Meteorology and Physical Oceanography, Department of Earth, Atmospheric, and Planetary Sciences, MIT, 1989-1997
Member, Board of the University Corporation for Atmospheric Research, 1989- 1992
Recipient, Meisinger Award, American Meteorological Society, 1986
PhD, Meteorology, Massachusetts Institute of Technology (MIT), 1978