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

Wehr, Richard; Saleska, Scott R.

doi:https://doi.org/10.5194/bg-18-13-2021

Articles | Volume 18, issue 1

https://doi.org/10.5194/bg-18-13-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-13-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 1

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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Final revised paper (published on 04 Jan 2021)
Preprint (discussion started on 13 May 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review on manuscript by Wehr and Saleska', Anonymous Referee #1, 12 Jun 2020
- AC1: 'Response by the authors to Anonymous Referee #1', Richard Wehr, 12 Sep 2020
RC2: 'Review of Wehr and Saleska', Anonymous Referee #2, 23 Aug 2020
- AC2: 'Response by the authors to Anonymous Referee #2', Richard Wehr, 13 Sep 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (26 Sep 2020) by Christopher Still

AR by Richard Wehr on behalf of the Authors (14 Oct 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (23 Oct 2020) by Christopher Still

RR by Anonymous Referee #2 (27 Oct 2020)

RR by Anonymous Referee #1 (02 Nov 2020)

ED: Publish as is (10 Nov 2020) by Christopher Still

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.