How changing the height of the Antarctic ice sheet affects global climate: a mid-Pliocene case study

被引：3

作者：

Huang, Xiaofang ^{[1
]}

Yang, Shiling ^{[1
,2
]}

Haywood, Alan ^{[3
]}

Tindall, Julia ^{[3
]}

Jiang, Dabang ^{[2
,4
]}

Wang, Yongda ^{[1
]}

Sun, Minmin ^{[1
,2
]}

Zhang, Shihao ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China

[2] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China

[3] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, England

[4] Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China

来源：

CLIMATE OF THE PAST | 2023年 / 19卷 / 03期

基金：

中国国家自然科学基金;

关键词：

PLIOMIP EXPERIMENTAL-DESIGN; AIR-FLOW; MODEL; SIMULATIONS; HADCM3; SENSITIVITY; FEATURES; IMPACT;

D O I：

10.5194/cp-19-731-2023

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Warming-induced topographic changes of the East Antarctic icesheet (EAIS) during the Pliocene warm period could have a significantinfluence on the climate. However, how large changes in the EAIS heightcould theoretically affect global climate have yet to be studied. Here, theinfluence of possible height changes of the EAIS on climate over the EastAntarctic ice sheet region versus the rest of the globe is investigatedthrough numerical climate modeling using the Pliocene as a test case. Asexpected, the investigation reveals that the reduction of ice sheet heightleads to a warmer and wetter East Antarctica. However, unintuitively, boththe surface air temperature and the sea surface temperature decrease overthe rest of the globe. These temperature changes result from the higher airpressure over Antarctica and the corresponding lower air pressure overextra-Antarctic regions with the reduction of EAIS height. This topographyeffect is further confirmed by energy balance analyses. These findings couldprovide insights into future climate change caused by warming-induced heightreduction of the Antarctic ice sheet.

引用

页码：731 / 745

页数：15

共 63 条

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[Anonymous], 2014, ENG SCI, DOI DOI 10.1002/JOC.1759

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