Quantification of source region influences on the ozone burden

被引:3
作者
Treffeisen, R
Grunow, K
Möller, D
Hainsch, A
机构
[1] Alfred Wegener Inst Meeres & Polarforsch, D-14401 Potsdam, Germany
[2] Free Univ Berlin, Inst Meteorol, D-12165 Berlin, Germany
[3] Brandenburg Tech Univ Cottbus, Lehrstuhl Luftchem & Luftreinhaltung, D-03013 Cottbus, Germany
[4] Tech Univ Berlin, Lehrstuhl Luftreinhaltung, D-10623 Berlin, Germany
关键词
local ozone contribution; ozone transport; meteorological influence; synoptic weather system;
D O I
10.1016/S1352-2310(02)00283-2
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A project was performed to quantify different influences on the ozone burden. It could be shown that large-scale meteorological influences determine a very large percentage of the ozone concentration. Local measures intended to reduce peak ozone concentrations in summer turn out to be not very effective as a result. The aim of this paper is to quantify regional emission influences on the ozone burden. The investigation of these influences is possible by comparison of the ozone (O-3) and oxidant (O-x = O-3 + NO2) concentrations at high-elevation sites downwind and upwind of a source region by using back trajectories. It has been shown that a separation between large-scale influenced meteorological and regional ozone burdens at these sites is possible. This method is applied for an important emission area in Germany-the Ruhrgebiet. On average, no significant ozone contribution of this area to the regional ozone concentration could be found. A large part of the ozone concentration is highly correlated with synoptic weather systems, which exhibit a dominant influence on the local ozone concentrations. Significant contributions of related photochemical ozone formation of the source area of 13-15% have been found only during favourable meteorological situations, identified by the hourly maximum day temperature being above 25degreesC. This is important with respect to the EU daughter directive to EU 96/62/EC (Official Journal L296 (1996) 55) because Member States should explore the possibilities of local measures to avoid the exceedance of threshold values and, if effective local measures exist, to implement them. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3565 / 3582
页数:18
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