No Two Latitudes Alike

Science  14 Sep 2001:
Vol. 293, Issue 5537, pp. 2015-2016
DOI: 10.1126/science.1061941

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Most records of past climatic change come from just a few locations, namely Greenland, Antarctica, and the North Atlantic Ocean. As Steig explains in his Perspective, the spatial patterns of climatic change therefore remain virtually unknown. The reports by Stenni et al. and Sachs et al. help to address this problem by providing insights into how the sea surface temperatures in the mid-latitude oceans of the Southern Hemisphere changed over the last 40,000 years. The results indicate that all latitudes play equally important roles in the ice-age cycle.