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Comparison of 19 th century and present concentrations and depositions of ozone in Central Europe

Weidinger, Tamás and Baranka, G. and Balázs, R. and Tóth, K. (2011) Comparison of 19 th century and present concentrations and depositions of ozone in Central Europe. ACTA SILVATICA ET LIGNARIA HUNGARICA, 7. pp. 23-28. ISSN 1786-691X

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Abstract

Ozone, one of the most important trace gases in atm osphere was discovered by Christian Friedrich Schönbein (1799–1886), a chemis try professor at the University of Basel. The method developed by him was used from the middle of nineteenth century until the 1920’s in much of the world. The measurement method is based essentially on the color-change of an indicator test paper. We obtained records for ozone measured in the Habsburg Empire using Schönbein’s method for analyze the long term enviro nmental processes. According to records kept in the Habsburg Empire, ozone was measured at more than twenty sites between 1853–1856. On the territory of the Kingdom of Hungary, ozone w as measured at Szeged, Buda and Selmecbánya (Schemnitz, Banska Štiavnica) among oth ers. Long term datasets are available from Buda (1871–1898) and Ó-Gyalla (Altdala, Hurbanovo, 1898–1905). Ozone was measured during both day- and nighttime. Additionally meteorologica l variables (like air temperature, relative humidity, air pressure, wind speed, cloud cover, pr ecipitation) were also observed several times a day. The data reported in the yearbooks were collec ted and evaluated in this study to reconstruct the ozone dataset. Depending on concentrations and deposition velocity over different vegetated surfaces the ozone deposition can be estimated. The reliability of estimations and reconstructed ozone deposition values are also discussed. Finally ozone datasets from the 19 th and 21 st century and the differences in ozone concentration and depo sition between rural and urban areas are compared. Ozone concentrations and deposition are f ound to be approximately three times higher now than in the 19 th century.

Item Type: Article
Subjects: Q Science / természettudomány > QE Geology / földtudományok > QE04 Meteorology / meteorológia
Q Science / természettudomány > QH Natural history / természetrajz > QH540 Ecology / ökológia
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 09 Oct 2014 14:18
Last Modified: 09 Oct 2014 14:18
URI: http://real.mtak.hu/id/eprint/17642

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