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Detection of human influence on twentieth-century precipitation trends

Xuebin Zhang, Francis W. Zwiers (), Gabriele C. Hegerl, F. Hugo Lambert, Nathan P. Gillett, Susan Solomon, Peter A. Stott and Toru Nozawa
Additional contact information
Xuebin Zhang: Environment Canada, Toronto, Ontario M3H 5T4, Canada
Francis W. Zwiers: Environment Canada, Toronto, Ontario M3H 5T4, Canada
Gabriele C. Hegerl: Nicholas School for the Environment and Earth Sciences, Box 90227, Duke University, Durham, North Carolina 27708, USA
F. Hugo Lambert: 507 McCone Hall, University of California, Berkeley, California 94720, USA
Nathan P. Gillett: Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
Susan Solomon: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, Colorado 80305, USA
Peter A. Stott: Met Office Hadley Centre (Reading Unit), Meteorology Building, University of Reading, Reading RG6 6BB, UK
Toru Nozawa: National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan

Nature, 2007, vol. 448, issue 7152, 461-465

Abstract: The day the rains came We have left our mark on the climate: surface air temperature, sea level pressure, free atmospheric temperature and ocean temperature have all changed during the past century as a result of human activities. Climate models suggest that human activity may have also caused changes in precipitation on a global scale, but no evidence had been found to support the prediction. Now it has. A comparison of observed changes in precipitation over land during the twentieth century with climate simulations points to a detectable influence on the latitudinal patterns of precipitation. Anthropogenic factors contributed to moistening in Northern Hemisphere mid-latitudes, but elsewhere, for instance in the Northern Hemisphere tropics, the effect was drying.

Date: 2007
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DOI: 10.1038/nature06025

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