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• W2162218881 abstract "Abstract. We report on satellite observations of atmospheric Sulfur Dioxide (SO2) emitted from metal smelting industries in Peru, South America and Siberia, Russia. Most of the non-ferrous metal ores are sulfidic and during the smelting process the sulfur is emitted as SO2. In addition to Norilsk, Russia, Peruvian copper smelters are among the most polluting point sources in the world. We retrieve SO2 column amounts from spectra of the Global Ozone Monitoring Experiment (GOME) on the Earth Research Satellite 2 (ERS-2) for the years 1996 to 2002 using an algorithm based on differential Optical Absorption Spectroscopy (DOAS). Areas of enhanced SO2 column amounts are clearly identified on a 7-years mean map of GOME observations over the regions with La Oroya and Ilo copper smelters of Peru and Norilsk smelters of Russia. Since the instrument sensitivity is highly dependent on surface albedo, SO2 vertical profile, solar zenith angle (SZA), wavelength, clouds, and aerosol, radiative transfer modelling is used to convert the analysed slant column densities into vertical column densities. In this study, the full spherical Monte-Carlo radiative transport model TRACY-II is used for SO2 AMF calculation. GOME data is analysed in further detail by calculating time series over these regions. For the different locations, the results demonstrate both, increasing and decreasing trends in the SO2 column amounts over the time period of 1996–2002. The decreasing trend for the Ilo copper smelter is in good agreement with implemented measures for emission reductions. However, even for the cases with decreasing trends, these point sources are still a dominant source of anthropogenic SO2 emissions in their region. For the smelters in Peru, the potential influence due to SO2 emission by the nearby volcanoes is investigated and found to be negligible." @default.
• W2162218881 created "2016-06-24" @default.
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• W2162218881 date "2008-09-18" @default.
• W2162218881 modified "2023-10-09" @default.
• W2162218881 title "Temporal trends of anthropogenic SO&lt;sub&gt;2&lt;/sub&gt; emitted by non-ferrous metal smelters in Peru and Russia estimated from Satellite observations" @default.
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• W2162218881 doi "https://doi.org/10.5194/acpd-8-17393-2008" @default.
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