The nitrate content of Greenland ice and solar activity |
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| Authors: | G E Kocharov I V Kudryavtsev M G Ogurtsov E Sonninen H Jungner |
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| Institution: | (1) Ioffe Physicotechnical Institute, St. Petersburg, Russia;(2) University of Helsinki, Helsinki, Finland |
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| Abstract: | Past solar activity is studied based on analysis of data on the nitrate content of Greenland ice in the period from 1576–1991. Hundred-year (over the entire period) and quasi-five-year (in the middle of the 18th century) variations in the nitrate content are detected. These reflect the secular solar-activity cycle and cyclicity in the flare activity of the Sun. |
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