Research Article
Century-scale variability in global annual runoff examined using a water balance model
Gregory J. McCabe,
David M. Wolock,
Corresponding Author
Gregory J. McCabe
US Geological Survey, Denver Federal Center, MS 412, Denver, CO 80225, USA
US Geological Survey, Denver Federal Center, MS 412, Denver, CO 80225, USA.Search for more papers by this authorDavid M. Wolock
US Geological Survey, 4821 Quail Crest Place, Lawrence, KS 66049, USA
Search for more papers by this authorGregory J. McCabe,
David M. Wolock,
Corresponding Author
Gregory J. McCabe
US Geological Survey, Denver Federal Center, MS 412, Denver, CO 80225, USA
US Geological Survey, Denver Federal Center, MS 412, Denver, CO 80225, USA.Search for more papers by this authorDavid M. Wolock
US Geological Survey, 4821 Quail Crest Place, Lawrence, KS 66049, USA
Search for more papers by this authorAbstract
A monthly water balance model (WB model) is used with CRUTS2.1 monthly temperature and precipitation data to generate time series of monthly runoff for all land areas of the globe for the period 1905 through 2002. Even though annual precipitation accounts for most of the temporal and spatial variability in annual runoff, increases in temperature have had an increasingly negative effect on annual runoff after 1980. Although the effects of increasing temperature on runoff became more apparent after 1980, the relative magnitude of these effects are small compared to the effects of precipitation on global runoff. Copyright © 2010 Royal Meteorological Society
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