Articles | Volume 14, issue 12
https://doi.org/10.5194/bg-14-3015-2017
https://doi.org/10.5194/bg-14-3015-2017
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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Cited articles

Ball, J. T., Woodrow, I. E. and Berry, J. A.: A Model Predicting Stomatal Conductance and its Contribution to the Control of Photosynthesis under Different Environmental Conditions, in: Progress in Photosynthesis Research, edited by: Biggins, J., Springer Netherlands, Dordrecht, 221–224, 1987.
Churkina, G., Running, S. W., and Schloss, A. L.: Comparing global models of terrestrial net primary productivity (NPP): the importance of water availability, Glob. Change Biol., 5, 46–55, 1999.
Ciais, P., Sabine, C., Bala, G., Bopp, L., Brovkin, V., Canadell, J., Chhabra, A., DeFries, R., Galloway, J., Heimann, Jones, C., Le Quéré, C., Myneni, R. B., Piao, S., and Thornton, P.: Carbon and Other Biogeochemical Cycles, in: Climate Change 2013: The Physical Science Basis, Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker T. F., Qin D., Plattner G. K., Tignor M., Allen S. K., Boschung J., Nauels A., Xia Y., Bex V., and Midgley P. M., Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 465–570, 2014.
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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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