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Greenhouse-gas fingerprints

Short episodes of warming and cooling occurred throughout the last glaciation. An innovative modelling study indicates that ocean-circulation changes produced much of the causative variation in greenhouse gases.

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Figure 1: Records of atmospheric N2O and of Dansgaard–Oeschger events over a 16,000-year interval during the last ice age.


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Stocker, T., Schilt, A. Greenhouse-gas fingerprints. Nature 456, 331–333 (2008).

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