High regional climate sensitivity over continental China constrained by glacial-recent changes in temperature and the hydrological cycle

被引：76

作者：

Eagle, Robert A. ^{[1
,5
]}

Risi, Camille ^{[6
,7
]}

Mitchell, Jonathan L. ^{[1
,2
]}

Eiler, John M. ^{[5
]}

Seibt, Ulrike ^{[1
,2
]}

Neelin, J. David ^{[2
,3
]}

Li, Gaojun ^{[8
]}

Tripati, Aradhna K. ^{[1
,2
,3
,4
]}

机构：

[1] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA

[4] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

[5] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[6] Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80303 USA

[7] CNRS, Inst Pierre Simon LaPlace, Meteorol Dynam Lab, F-75252 Paris 05, France

[8] Nanjing Univ, Dept Earth Sci, Minist Educ, Key Lab Surficial Geochem, Nanjing 210046, Peoples R China

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2013年 / 110卷 / 22期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

CLUMPED ISOTOPE; DEEP-SEA; CARBONATE MINERALS; C-13-O-18; BONDS; LOESS; MONSOON; RECORD; HISTORY; MAXIMUM; CAVE;

D O I：

10.1073/pnas.1213366110

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：

070301 [无机化学]; 070403 [天体物理学]; 070507 [自然资源与国土空间规划学]; 090105 [作物生产系统与生态工程];

摘要：

The East Asian monsoon is one of Earth's most significant climatic phenomena, and numerous paleoclimate archives have revealed that it exhibits variations on orbital and suborbital time scales. Quantitative constraints on the climate changes associated with these past variations are limited, yet are needed to constrain sensitivity of the region to changes in greenhouse gas levels. Here, we show central China is a region that experienced a much larger temperature change since the Last Glacial Maximum than typically simulated by climate models. We applied clumped isotope thermometry to carbonates from the central Chinese Loess Plateau to reconstruct temperature and water isotope shifts from the Last Glacial Maximum to present. We find a summertime temperature change of 6-7 degrees C that is reproduced by climate model simulations presented here. Proxy data reveal evidence for a shift to lighter isotopic composition of meteoric waters in glacial times, which is also captured by our model. Analysis of model outputs suggests that glacial cooling over continental China is significantly amplified by the influence of stationary waves, which, in turn, are enhanced by continental ice sheets. These results not only support high regional climate sensitivity in Central China but highlight the fundamental role of planetary-scale atmospheric dynamics in the sensitivity of regional climates to continental glaciation, changing greenhouse gas levels, and insolation.

引用

页码：8813 / 8818

页数：6

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