气候变化领域集成服务门户(CCPortal): Twentieth century climate change: Evidence from small glaciers

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DOI	10.1073/pnas.97.4.1406
	Twentieth century climate change: Evidence from small glaciers
	Dyurgerov M.B.; Meier M.F.
发表日期	2000
ISSN	0027-8424
起始页码	1406
结束页码	1411
卷号	97 期号:4
英文摘要	The relation between changes in modern glaciers, not including the ice sheets of Greenland and Antarctica, and their climatic environment is investigated to shed light on paleoglacier evidence of past climate change and for projecting the effects of future climate warming on cold regions of the world. Loss of glacier volume has been more or less continuous since the 19th century, but it is not a simple adjustment to the end of an 'anomalous' Little Ice Age. We address the 1961-1997 period, which provides the most observational data on volume changes. These data show trends that are highly variable with time as well as within and between regions; trends in the Arctic are consistent with global averages but are quantitatively smaller. The averaged annual volume loss is 147 mm · yr-1 in water equivalent, totaling 3.7 x 103 km3 over 37 yr. The time series shows a shift during the mid-1970s, followed by more rapid loss of ice volume and further acceleration in the last decade; this is consistent with climatologic data. Perhaps most significant is an increase in annual accumulation along with an increase in melting; these produce a marked increase in the annual turnover or amplitude. The rise in air temperature suggested by the temperature sensitivities of glaciers in cold regions is somewhat greater than the global average temperature rise derived largely from low altitude gauges, and the warming is accelerating.
语种	英语
scopus关键词	ice; water; air temperature; altitude; Antarctica; arctic climate; article; cold climate; greenhouse effect; Greenland; history; melting point; priority journal; temperature sensitivity
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159207
作者单位	Dyurgerov, M.B., Inst. of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309, United States; Meier, M.F., Inst. of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309, United States, Department of Geological Sciences, University of Colorado, Boulder, CO 80309, United States
推荐引用方式 GB/T 7714	Dyurgerov M.B.,Meier M.F.. Twentieth century climate change: Evidence from small glaciers[J],2000,97(4).
APA	Dyurgerov M.B.,&Meier M.F..(2000).Twentieth century climate change: Evidence from small glaciers.Proceedings of the National Academy of Sciences of the United States of America,97(4).
MLA	Dyurgerov M.B.,et al."Twentieth century climate change: Evidence from small glaciers".Proceedings of the National Academy of Sciences of the United States of America 97.4(2000).