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Ice Memory [Long] (5647 words) |
 | In the early nineteen-sixties, Willi Dansgaard, a Danish chemist, proved that the ratio between the two in rainwater was related to the temperature. |
| Dansgaard took samples of rain from around the world and demonstrated that, by running them through a mass spectrometer, he could in most cases arrive at the average temperature of the spot where they had fallen. |
| Sigfus Johnsen was a student of Dansgaard's who worked with him on the Camp Century core, and he happened to be travelling to North GRIP at the same time I was. |
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