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Human Impacts on Weather and Climate
Second Edition
This new edition of Human Impacts on Weather and Climate examines the
scientific debates surrounding anthropogenic impacts on the Earth’s climate and
presents the most recent theories, data, and modeling studies. The book discusses
the concepts behind deliberate human attempts to modify the weather through
cloud seeding, as well as inadvertent modification of weather and climate on
regional and global scales through the emission of aerosols and gases and change
in land-use. The natural variability of weather and climate plicates
our ability to determine a clear cause-and-effect relationship to human activity.
The authors examine the strengths and weaknesses of the various hypotheses
regarding human impacts on global climate in simple and accessible terms.
Like the first edition, this fully revised new edition will be a valuable resource for
undergraduate and graduate courses in atmospheric and environmental science,
and will also appeal to policy-makers and general readers interested in how
humans are affecting the global climate.
William Cotton is a Professor in the Department of Atmospheric Science
at Colorado State University. He is a Fellow of the American Meteorological
Society and the Cooperative Institute for Research in the Atmosphere (CIRA).
Roger Pielke Sr. is a Senior Research Associate in the Department of Atmo-
spheric and Oceanic Sciences, Senior Research Scientist at the Cooperative
Institute for Research in Environmental Sciences at the University of Colorado–
Boulder, and an Emeritus Professor of Atmospheric Science at Colorado State
University. He is also a Fellow of the American Geophysical Union and of the
American Meteorological Society.
HUMAN IMPACTS ON WEATHER
AND CLIMATE
Second Edition
WILLIAM R. COTTON
Colorado State University
and
ROGER A. PIELKE Sr.
University of Colorado at Boulder
CAMBRIDGE UNIVERSITY PRESS
Ca