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| Titel |
The contrasting role of forests and grassland on land-climate interaction during recent European heat waves |
| VerfasserIn |
Ryan Teuling, Sonia Seneviratne, Reto Stöckli, Markus Reichstein, Eddy Moors, Bart van den Hurk, Philippe Ciais, Sebastiaan Luyssaert |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250036842
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| Zusammenfassung |
| Recent European heat waves have raised the interest in the impact of land conditions, in particular soil moisture, on temperature extremes. Here we show that observations from an extensive network of flux towers reveal a contrasting response of forests and grasses in their water and energy budgets to heat waves. On the short term, forests primarily increase the sensible heat flux into the atmosphere in response to increased available energy at the land surface, in contrast to grasses that show only elevated latent heating. On the long-term, this elevated latent heating accelerates depletion of soil moisture, and the system switches into a new equilibrium in which grasses surpass forests as the major source of sensible heat. Satellite observations of land surface temperature during past heat waves are consistent with this hypothesis. |
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