Map of sulphur dioxide from Pinatubo Volcano

Map of sulphur dioxide from Pinatubo Volcano

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Caption: False-colour map of sulphur dioxide released by the Mount Pinatubo volcano in the Philippines in June 1991. This image was made on 30 June 1991, 18 days after the eruption. The highest concentrations of the gas are shown as green, centered over the Atlantic Ocean. By this time the cloud had spread in a belt eastwards over the Pacific Ocean, it completed its circuit of the Earth by 5 July. As the cloud moves, much of the gas reacts with atmospheric water to form a sulphuric acid aerosol. Data for this image were gathered by the Total Ozone Mapping Spectrometer (TOMS) on the Nimbus-7 satellite. Blue specks outside of the cloud are data processing 'noise'.

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Keywords: from volcano, geology, nimbus-7 imagery, pinatubo volcano, so2 cloud, so2 from, sulfur, sulphur dioxide, toms imagery, volcano

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