Details

Autor(en) / Beteiligte

• Teuling, Adriaan J
• Van Loon, Anne F
• Seneviratne, Sonia Isabelle
• Lehner, Irene
• Aubinet, Marc
• Heinesch, Bernard
• Bernhofer, Christian
• Grünwald, Thomas
• Prasse, Heiko
• Spank, Uwe

Titel

Evapotranspiration amplifies European summer drought

Ist Teil von

• Geophysical research letters, 2013-05, Vol.40 (10), p.2071-2075

Ort / Verlag

Washington: American Geophysical Union

Erscheinungsjahr

2013

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Drought is typically associated with a lack of precipitation, whereas the contribution of evapotranspiration and runoff to drought evolution is not well understood. Here we use unique long‐term observations made in four headwater catchments in central and western Europe to reconstruct storage anomalies and study the drivers of storage anomaly evolution during drought. We provide observational evidence for the “drought‐paradox” in that region: a consistent and significant increase in evapotranspiration during drought episodes, which acts to amplify the storage anomalies. In contrast, decreases in runoff act to limit storage anomalies. Our findings stress the need for the correct representation of evapotranspiration and runoff processes in drought indices. Key Points Storage anomaly change drivers attributed to observed fluxesEvapotranspiration amplifies effect of negative precipitation anomaliesNegative runoff anomalies reduce storage anomalies