Century‐scale variability in global annual runoff examined using a water balance model

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 variabi...

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Bibliographic Details
Published in:International journal of climatology 2011-10, Vol.31 (12), p.1739-1748
Main Authors: McCabe, Gregory J., Wolock, David M.
Format: Article
Language:English
Subjects:
annual runoff
climate variability
Earth, ocean, space
Exact sciences and technology
External geophysics
global climate
Meteorology
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Summary: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
ISSN:0899-8418
1097-0088
1097-0088
DOI:10.1002/joc.2198