Articles | Volume 14, issue 2
Research article
26 Jan 2017
Research article |  | 26 Jan 2017

Dynamics of canopy stomatal conductance, transpiration, and evaporation in a temperate deciduous forest, validated by carbonyl sulfide uptake

Richard Wehr, Róisín Commane, J. William Munger, J. Barry McManus, David D. Nelson, Mark S. Zahniser, Scott R. Saleska, and Steven C. Wofsy

Data sets

Fluxes of Carbonyl Sulfide at Harvard Forest EMS Tower since 2010 Roisin Commane, Steven Wofsy, and Richard Wehr

Isotopic Composition of Net Ecosystem CO2 Exchange at Harvard Forest EMS Tower since 2011 Scott Saleska and Richard Wehr

Canopy-Atmosphere Exchange of Carbon, Water and Energy at Harvard Forest EMS Tower since 1991 W. Munger and S. Wofsy

Short summary
Leaf stomata influence both photosynthesis and transpiration, coupling the carbon and water cycles, but there is no direct method for estimating stomatal behavior on the ecosystem scale. We use the ecosystem–atmosphere exchange of water, heat, and carbonyl sulfide to estimate canopy-integrated stomatal conductance by two independent methods. We then use that conductance to show that the seasonal dynamics of transpiration and evaporation are different than represented in current biosphere models.
Final-revised paper