Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 400159
Title Land-atmosphere coupling explains the link between pan evaporation and actual evapotranspiration trends in a changing climate
Author(s) Heerwaarden, C.C. van; Vilà-Guerau de Arellano, J.; Teuling, A.J.
Source Geophysical Research Letters 37 (2010). - ISSN 0094-8276 - 5 p.
Department(s) Meteorology and Air Quality
Hydrology and Quantitative Water Management
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) convective boundary-layer - united-states - hydrologic-cycle - soil-moisture - terrestrial - regions - dry
Abstract Decreasing trends in pan evaporation are widely observed across the world as a response of the climate system to changes in temperature, precipitation, incoming radiation and wind speed. Nevertheless, we only partially understand how trends in actual evapotranspiration are linked to those trends. Here, we use a model to show that regulation of the near-surface temperature and humidity by land-atmosphere feedbacks results in a strong connection between pan evaporation, actual evapotranspiration and vapor pressure deficit (VPD) depending on the climate forcings. When climate change occurs, the feedbacks direct the system towards a different combination of the three variables. If we know the trends in pan evaporation, VPD and wind speed, we can therefore infer the change in the forcings and estimate the trend in actual evapotranspiration.
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