Biogeosciences
Biogeosciences
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Articles | Volume 14, issue 12
Articles | Volume 14, issue 12
https://doi.org/10.5194/bg-14-3015-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-14-3015-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 14, issue 12
Research article
 | 
22 Jun 2017
Research article |  | 22 Jun 2017

The importance of radiation for semiempirical water-use efficiency models

Sven Boese, Martin Jung, Nuno Carvalhais, and Markus Reichstein

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Short summary
For plants, the ratio of carbon uptake to water loss by transpiration is usually thought to depend on characteristic properties (their adaption to water scarcity) and the dryness of the atmosphere at any given moment. We show that, on the ecosystem scale, radiation has an independent effect on this ratio that had not been previously considered. When including this variable in models, predictions of transpiration improve considerably.
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