Open AccessComparison of ozone fluxes over grassland by gradient and eddy covariance technique
Author(s) -
Muller Jennifer B. A.,
Coyle Mhairi,
Fowler David,
Gallagher Martin W.,
Nemitz Eiko G.,
Percival Carl J.
Publication year - 2009
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl.226
Subject(s) - eddy covariance , flux (metallurgy) , environmental science , atmospheric sciences , covariance , ozone , grassland , vegetation (pathology) , gradient method , climatology , meteorology , geology , ecosystem , mathematics , geography , chemistry , statistics , algorithm , medicine , ecology , organic chemistry , pathology , agronomy , biology
Ozone flux measurements over vegetation are important to estimate surface losses and ozone uptake by plants. The gradient and eddy covariance flux technique were used for measurements over grassland at a flux‐monitoring site in southern Scotland during August 2007. The comparison of the two methods shows that the aerodynamic flux‐gradient method provides very similar long‐term average fluxes of ozone as the eddy covariance method. The eddy covariance technique is better at capturing diurnal cycles and short‐term changes, but the comparison of two fast analysers illustrate that there can be considerable measurement uncertainty. Copyright © 2009 Royal Meteorological Society