Trends in pan evaporation and actual evapotranspiration across the conterminous U.S.: Paradoxical or complementary?
نویسندگان
چکیده
منابع مشابه
Modeled Areal Evaporation Trends over the Conterminous United States
Long-term (1961–1990) areal evapotranspiration (AE) has been modeled with the help of 210 stations of the Solar and Meteorological Surface Observation Network within the conterminous United States. Modeled AE, averaged over all stations, has shown an overall increase of about 2–3% in the period 1961–1990, both on an annual basis and over the warm season (May–September). The rate of increase has...
متن کاملWater balance-based actual evapotranspiration reconstruction from ground and satellite observations over the conterminous United States
The objective of this study is to produce an observationally based monthly evapotranspiration (ET) product using the simple water balance equation across the conterminous United States (CONUS). We adopted the best quality ground and satellite-based observations of the water budget components, i.e., precipitation, runoff, and water storage change, while ET is computed as the residual. Precipitat...
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The hypothesis of a complementary relationship in regional evapotranspiration allows for estimation of actual evapotranspiration on a regional scale by simple, physically based models that take into account feedbacks in land surface-atmosphere dynamics. A regional, seasonal Advection-Aridity model is used to create a monthly time-series of actual evapotranspiration for a period of 27 years at a...
متن کاملEvapotranspiration Intensifies over the Conterminous United States
Using long-term (1948–1996) pan evaporation measurements, a 6% increase in warm-season (May–October) actual evapotranspiration (ET ) is computed over the conterminous United States between 1949 and 1996 via the complementary hypothesis. This predicted increase in ET is in agreement with the measured precipitation increase for the same period if long-term wet-surface ET is assumed to be constant...
متن کاملEvaluation of three complementary relationship evapotranspiration models by water balance approach to estimate actual regional evapotranspiration in different climatic regions
Three evapotranspiration models using the complementary relationship approach for estimating areal actual evapotranspiration were evaluated and compared in three study regions representing a large geographic and climatic diversity: NOPEX region in Central Sweden (cool temperate, humid), Baixi catchment in Eastern China (subtropical, humid), and the Potamos tou Pyrgou River catchment in Northwes...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2004
ISSN: 0094-8276
DOI: 10.1029/2004gl019846