气候变化领域集成服务门户(CCPortal): Coupling of CO2 and Ice sheet stability over major climate transitions of the last 20 million years

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DOI	10.1126/science.1178296
	Coupling of CO2 and Ice sheet stability over major climate transitions of the last 20 million years
	Tripati A.K.; Roberts C.D.; Eagle R.A.
发表日期	2009
ISSN	0036-8075
起始页码	1394
结束页码	1397
卷号	326 期号:5958
英文摘要	The carbon dioxide (CO2) content of the atmosphere has varied cyclically between ∼ 180 and ∼ 280 parts per million by volume over the past 800,000 years, closely coupled with temperature and sea level. For earlier periods in Earth's history, the partial pressure of CO2 ( pCO2) is much less certain, and the relation between pCO2 and climate remains poorly constrained. We use boron/calcium ratios in foraminifera to estimate pCO2 during major climate transitions of the past 20 million years. During the Middle Miocene, when temperatures were ∼ 3° to 6°C warmer and sea level was 25 to 40 meters higher than at present, pCO2 appears to have been similar to modern levels. Decreases in pCO2 were apparently synchronous with major episodes of glacial expansion during the Middle Miocene (∼14 to 10 million years ago) and Late Pliocene (∼3.3 to 2.4 million years ago.
英文关键词	boron; calcium; carbon dioxide; atmospheric lapse rate; carbon dioxide; foraminifera; glacial history; glacial-interglacial cycle; global warming; ice sheet; Miocene; paleoclimate; Pliocene; sea level; article; carbon dioxide tension; climate change; foraminifer; ice sheet; Middle Miocene; priority journal; sea level; temperature; Upper Pliocene; Foraminifera
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245780
作者单位	Departments of Earth and Space Sciences, Institute of Geophysics and Planetary Physics, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, United States; Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States
推荐引用方式 GB/T 7714	Tripati A.K.,Roberts C.D.,Eagle R.A.. Coupling of CO2 and Ice sheet stability over major climate transitions of the last 20 million years[J],2009,326(5958).
APA	Tripati A.K.,Roberts C.D.,&Eagle R.A..(2009).Coupling of CO2 and Ice sheet stability over major climate transitions of the last 20 million years.Science,326(5958).
MLA	Tripati A.K.,et al."Coupling of CO2 and Ice sheet stability over major climate transitions of the last 20 million years".Science 326.5958(2009).