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Profiles of ozone and surface-layer parameters over a mature spruce stand

Die Bestimmung der Pradtl-Schichtparameter und der Vertikalprofile von Ozon über einem ausgewachsenen Fichtenbestand
: Enders, G.; Teichmann, U.; Kramm, G.

Georgii, H.-W.:
Mechanisms and effects of pollutant-transfer into forests. Proceedings
Dordrecht: Kluwer, 1989
ISBN: 0-7923-0430-6
Meeting on Mechanisms and Effects of Pollutant-Transfer into Forests <1988, Oberursel>
Fraunhofer IFU; 2002 in Helmholtz-Gesellschaft integriert
dry deposition; Nullpunktverschiebung; Ozon; ozone; Rauhigkeitslänge; roughness length; Terpen; terpene; trockene Deposition; zero-displacement

Measurements of ozone profiles above a mature spruce stand lead to the conclusion that either an ozone production takes place close to or within the canopy or a destruction well above it, because at certain times a decrease of ozone with height has been observed. Possible influences of terpenes to this phenomenon are discussed. Fluxes and deposition velocities of ozone are calculated on the basis of the gradient approach. In addition, surface layer parameters and aerodynamic stand characteristics derived from wind velocity, temperature, and humidity profiles are presented.