期刊
SCIENCE
卷 330, 期 6005, 页码 819-821出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1193654
关键词
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资金
- NSF
- Utrecht University
- LPP foundation
- Statoil
- Netherlands Organization for Scientific Research [863.07.001]
- European Community [259627]
- NERC [NE/G003270/1] Funding Source: UKRI
- Natural Environment Research Council [NE/G003270/1] Funding Source: researchfish
The long-term warmth of the Eocene (similar to 56 to 34 million years ago) is commonly associated with elevated partial pressure of atmospheric carbon dioxide (pCO(2)). However, a direct relationship between the two has not been established for short-term climate perturbations. We reconstructed changes in both pCO(2) and temperature over an episode of transient global warming called the Middle Eocene Climatic Optimum (MECO; similar to 40 million years ago). Organic molecular paleothermometry indicates a warming of southwest Pacific sea surface temperatures (SSTs) by 3 to 6 degrees C. Reconstructions of pCO(2) indicate a concomitant increase by a factor of 2 to 3. The marked consistency between SST and pCO(2) trends during the MECO suggests that elevated pCO(2) played a major role in global warming during the MECO.
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