Climatology - Northern hemisphere ice-sheet influences on global climate change

被引：375
|
作者：
Clark, PU [1 ]
Alley, RB
Pollard, D
机构：
[1] Oregon State Univ, Dept Geosci, Corvallis, OR 97331 USA
[2] Penn State Univ, Inst Environm, University Pk, PA 16802 USA
[3] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA
来源：
SCIENCE | 1999年 / 286卷 / 5442期
关键词：
D O I：
10.1126/science.286.5442.1104
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Large ice sheets actively interact with the rest of the climate system by amplifying, pacing, and potentially driving global climate change over several time scales. Direct and indirect influences of ice sheets on climate cause changes in ocean surface temperatures, ocean circulation, continental water balance, vegetation,a nd land-surface albedo, which in turn cause additional feedbacks in the climate system and help to synchronize global climate change. The effect of the underlying geological substrate on ice-sheet dynamics may be the missing link in understanding the ice sheet-climate interactions that are integral to the middle Pleistocene transition; the 100,000-year climate cycle; high-amplitude, millennial-scale climate variability; and low-aspect ratio ice sheets of the Last Glacial Maximum.
引用
收藏
页码：1104 / 1111
页数：8
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