Articles | Volume 22, issue 10
https://doi.org/10.5194/hess-22-5143-2018
https://doi.org/10.5194/hess-22-5143-2018
Research article
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04 Oct 2018
Research article | Highlight paper |  | 04 Oct 2018

Why has catchment evaporation increased in the past 40 years? A data-based study in Austria

Doris Duethmann and Günter Blöschl

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Short summary
We analyze changes in catchment evaporation estimated from the water balances of 156 catchments in Austria over 1977–2014, as well as the possible causes of these changes. Our results show that catchment evaporation increased on average by 29 ± 14 mm yr−1 decade−1. We attribute this increase to changes in atmospheric demand (based on reference and pan evaporation), changes in vegetation (quantified by a satellite-based vegetation index), and changes in precipitation.