Figure 13 Maps of the average sea surface temperatures (in degrees Celsius) during 

 the recent winters and 17,000 years ago. The recent map (top) represents a synthesis 

 of oceanographic data, while the 17,000 year CLIMAP (bottom) is constructed from 

 estimates of past temperatures based on the fossil foraminifera in approximately 90 

 deep-sea cores from the Atlantic. 



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