Measurements of Dry Deposition of No2 to A Dutch Heathland Using the Eddy‐Correlation Technique

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Abstract

NO2 was deposited at a constant rate of 0.02 μg m-2s -1 for nearly all of the measuring period. The deposition velocity maintained a mean value of 1 mm s-1 throughout with minimum values nearing zero and maximum values of 3.5 mm s-1. There was no diurnal variation in canopy resistances to NO2. Mean values were 548 s m-1 and 400 s m-1 with and without the inclusion of several brief periods when the resistance increased markedly. Finally, a simulation of the cumulative sampling method was performed on the data set as described in Businger and Oncley (1990). They calculated a constant of proportionality, b, and showed it to have a value of 0.6 when considering heat and water-vapour fluxes. A value of b was calculated for NO2 flux using the data set presented here and was found to be 0.58. -from Authors
Original languageEnglish
Pages (from-to)767-786
Number of pages19
JournalQuarterly Journal of the Royal Meteorological Society
Volume118
Issue number506
DOIs
Publication statusPublished - 1992

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