Temporal Relationships of Carbon Cycling and Ocean Circulation at Glacial Boundaries
Temporal Relationships of Carbon Cycling and Ocean Circulation at Glacial Boundaries
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DOI：
10.1126/science.1104883
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发表时间：
2005-03
期刊：
影响因子：
56.9
通讯作者：
A. Piotrowski;S. Goldstein;S. Hemming;R. Fairbanks
中科院分区：
文献类型：
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作者：
A. Piotrowski;S. Goldstein;S. Hemming;R. Fairbanks
高沉积率的南大西洋深海岩芯的证据表明，全球和南大洋的碳收支变化之前的温盐环流变化在最后一个冰河时期的开始和结束，而这些都是由冰盖的增长和退缩，分别。在上一个冰河时代的千年突然变暖事件中，没有观察到一致的超前滞后关系，这可能是海洋环流引发了一些千年气候变化。在主要的冰期-间冰期转换期，全球碳收支和温盐海洋环流依次响应于迫使大陆冰盖生长和衰退的气候变化。
Evidence from high-sedimentation-rate South Atlantic deep-sea cores indicates that global and Southern Ocean carbon budget shifts preceded thermohaline circulation changes during the last ice age initiation and termination and that these were preceded by ice-sheet growth and retreat, respectively. No consistent lead-lag relationships are observed during abrupt millennial warming events during the last ice age, allowing for the possibility that ocean circulation triggered some millenial climate changes. At the major glacial-interglacial transitions, the global carbon budget and thermohaline ocean circulation responded sequentially to the climate changes that forced the growth and decline of continental ice sheets.