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Berlin Environmental Atlas

03.06 Near Ground Ozone (Edition 1996)

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Methodology

The somewhat complicated connections between generation and decomposition of ozone in the different layers of the atmosphere as well as its effect on living and inanimate environment are elucidated in the schematic depiction of Map 03.06.1.

Map 03.06.2 contains a wide-area depiction of 1995 maximum ozone levels interpolated to show the distribution through Germany.

In Map 03.06.3 the frequency with which the guide values was exceeded at Berlin measuring stations in 1995 is depicted. This provides a characterization of the ozone load in Berlin.

High ozone concentrations in the near ground atmosphere are a national problem as can be seen in Map 03.06.2. Nevertheless, it remains an issue whether and to what extent conurbations like Berlin cause additional ozone formation in the city and vicinity. The aim of the Berlin - Brandenburg state joint measuring project "FluMOB" (airborne and surface measurement of ozone and precursors to estimate the effectiveness of emission reduction measures in Greater Berlin - Brandenburg) was to answer the question whether and what contribution can be made by short-term measures to reduce emissions of ozone producing substances toward the reduction of ozone loads.

The main constituent was the measurement of ozone and other significant pollutants during a typical ozone weather condition between 23 and 27 July 1994 both near the ground and in the atmosphere, as measured from airplanes. The results of such measurement flights have been prepared in Maps 03.06.5 and 03.06.6. The development of the wide area ozone loads is shown in Map 03.06.4. Map 03.06.7 illustrates the temporal progression of some parameters as measured in Berlin.

It is only possible to answer the question regarding potential effects of emission reduction measures by using a simulation calculation of ozone concentration (for 25 July 1994, 4:00 p.m., in Map 03.06.8). If all other conditions remain unchanged, it is possible to reduce the emissions in the test area by any amount (here 30 % for nitrogen oxide and hydrocarbons). The effect of such reduction scenarios on the ozone distribution is shown in Map 03.06.9.

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