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Pre-requisite for reliable O 3 risk assessment for plants is determination of stomatal O 3 uptake. One unaddressed uncertainty in this context relates to transpiration-induced molecular collisions impeding stomatal O 3 influx. This study quantifies, through physical modelling, the error made when estimating stomatal O 3 flux without accounting for molecular collisions...
The assessment of trace-gas uptake by plants is of basic interest in plant ecophysiology and atmospheric chemistry. For tall vegetation and extensive canopies micrometeorological methods and modelling of deposition or combinations of both are usually the methods of choice. However, distinguishing between the aerodynamically driven components of deposition and stomatal uptake is difficult and estimates...
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