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Titolo:
The exchange of ozone between vegetation and atmosphere: micrometeorological measurement techniques and models
Autore:
Grunhage, L; Haenel, HD; Jager, HJ;
Indirizzi:
Univ Giessen, Inst Plant Ecol, D-35392 Giessen, Germany Univ Giessen Giessen Germany D-35392 lant Ecol, D-35392 Giessen, Germany Meteorol Data Proc & Modelling, D-40277 Leipzig, Germany Meteorol Data Proc & Modelling Leipzig Germany D-40277 Leipzig, Germany
Titolo Testata:
ENVIRONMENTAL POLLUTION
fascicolo: 3, volume: 109, anno: 2000,
pagine: 373 - 392
SICI:
0269-7491(2000)109:3<373:TEOOBV>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
RELAXED EDDY ACCUMULATION; REACTIVE TRACE GASES; ORDER CLOSURE-MODEL; DRY DEPOSITION; FLUX MEASUREMENTS; PLANT CANOPIES; CARBON-DIOXIDE; SURFACE FLUXES; BOUNDARY-LAYER; FOREST-CANOPY;
Keywords:
ozone; critical level; ozone flux; ozone flux modeling;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
127
Recensione:
Indirizzi per estratti:
Indirizzo: Grunhage, L Univ Giessen, Inst Plant Ecol, Heinrich Buff Ring 26-32, D-35392 Giessen, Germany Univ Giessen Heinrich Buff Ring 26-32 Giessen Germany D-35392
Citazione:
L. Grunhage et al., "The exchange of ozone between vegetation and atmosphere: micrometeorological measurement techniques and models", ENVIR POLLU, 109(3), 2000, pp. 373-392

Abstract

The European critical levels (CLs) to protect vegetation are expressed as an accumulative exposure over a threshold of 40 ppb (nl l(-1)). In view of the fact that these chamber-derived CLs are based on ozone (O-3) concentrations at the top of the canopy the correct application to ambient conditionspresupposes the application of Soil-Vegetation-Atmosphere-Transfer (SVAT) models for quantifying trace gas exchange between phytosphere and atmosphere. Especially in the context of establishing control strategies based on flux-oriented dose-response relationships, O-3 flux measurements and O-3 exchange simulations are needed for representative ecosystems. During the last decades several micrometeorological methods For quantifying energy and trace gas exchange were developed, as well as models for the simulation of the exchange of trace gases between phytosphere and atmosphere near the ground. This paper is a synthesis of observational and modeling techniques which discusses measurement methods, assumptions, and limitations and current modeling approaches. Because stomatal resistance for trace gas exchange is parameterized as a function of water vapor or carbon dioxide (CO2) exchange, the most important micrometeorological techniques especially for quantifying O-3, water vapor and CO2 flux densities are discussed. A comparison of simulated and measured O-3 flux densities shows good agreement in the mean. (C)2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 12:51:55