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During the TRACT measuring campaign in September 1992 a great number of measurements were performed by more than 40 international working groups. In addition, also data from approx. 300 stations—included in operational networks—were collected and put into a database. A first overall review of these data of ground based operational networks is presented and a number of phenomena and results are explained,...
An intercomparison of nine chemical mechanisms (e.g. ADOM, CBM-IV, EMEP, RADM2) as used by 12 contributing groups was conducted. The results for three scenarios are presented covering remote situations with a net O 3 loss of around 2.7 ppb (LAND and FREE) and a moderately polluted situation with O 3 formation of around 100 ppb (PLUMEI) over a 5 day simulation period. The overall tendencies...
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