Mathematics – Logic
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3421406s&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 21, CiteID L21406
Mathematics
Logic
13
Global Change: Regional Climate Change, Hydrology: Anthropogenic Effects (4802, 4902), Hydrology: Catchment, Hydrology: Climate Impacts, Hydrology: Evapotranspiration
Scientific paper
Hydrological model interpretation of the water flow development in the Aral Sea Drainage Basin (ASDB) indicates that the water diversion and irrigation schemes in this region have considerably increased evapotranspiration and thereby decreased net water flux (precipitation minus evapotranspiration) from the atmosphere to the surface of the ASDB. Increased evapotranspiration cools the irrigated areas, and the decrease of net atmospheric water influx to the ASDB may also have non-local effects outside the basin. Such effects have previously been estimated by atmospheric modeling, assuming a global average evapotranspiration return flow to the atmosphere of about 40% of irrigation. Our results indicate larger return flows, of nearly 100% of the applied irrigation water in the ASDB, which may also imply considerably larger than previously estimated non-local water and climate effects of the world's irrigated areas.
Destouni Georgia
Jarsjö Jerker
Shibuo Yoshihiro
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