Articles | Volume 18, issue 1
Biogeosciences, 18, 13–24, 2021
https://doi.org/10.5194/bg-18-13-2021
Biogeosciences, 18, 13–24, 2021
https://doi.org/10.5194/bg-18-13-2021

Research article 04 Jan 2021

Research article | 04 Jan 2021

Calculating canopy stomatal conductance from eddy covariance measurements, in light of the energy budget closure problem

Richard Wehr and Scott R. Saleska

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Latest update: 18 Jun 2021
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Short summary
Water and carbon exchange between plants and the atmosphere is governed by stomata: adjustable pores in the surfaces of leaves. The combined gas conductance of all the stomata in a canopy has long been estimated using an equation that is shown here to be systematically incorrect because it relies on measurements that are generally inadequate. An alternative approach is shown to be more accurate in all probable scenarios and to imply different responses of stomatal conductance to the environment.
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