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Environ. Sc/. Techno/.1993, 27, 2593-2605 Transport and Fate of Reactive Trace Gases in Red Spruce Needles. 2.
 

Summary: Environ. Sc/. Techno/.1993, 27, 2593-2605
Transport and Fate of Reactive Trace Gases in Red Spruce Needles. 2.
Interpretations of Flux Experiments Using Gas Transport Theory
Candls S. Clalborn,'st Ruben 0. Carbonell,$and Vlney P. AneJag
Laboratory for Atmospheric Research, Department of Civil and Environmental Engineering, Washington State University,
Pullman, Washington 99164-2910, Department of Chemical Engineering, North Carolina State University,
Raleigh, North Carolina 27695-7905, and Department of Marine, Earth, and Atmospheric Sciences, North Carolina State
University, Raleigh, North Carolina 27695-8208
A mathematical description of the multicomponent trans-
port of gaseous species into needles of conifer trees is
presented. Detailed physiology of the stomatal zone is
taken intoaccount,anddiffusionthroughtheatmospheric
boundary layer, wax-filled antechamber, stomata, and
substomatal cavity are described starting from the fun-
damental equationsformulticomponent gasdiffusion.The
model was used to analyze the results from two sets of
exposure experiments in which red spruce saplings were
exposed to gas-phase H202 or to a combination of H202,
S02, and 03.Model calculations indicate that the wax-
filled antechamber may provide a porous zone in which

  

Source: Aneja, Viney P. - Department of Marine, Earth and Atmospheric Sciences, North Carolina State University

 

Collections: Environmental Sciences and Ecology; Geosciences