globalchange  > 气候变化事实与影响
DOI: 10.5194/cp-15-291-2019
Scopus记录号: 2-s2.0-85061592769
论文题名:
Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation
作者: Zheng J.; Zhang Q.; Li Q.; Zhang Q.; Cai M.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2019
卷: 15, 期:1
起始页码: 291
结束页码: 305
语种: 英语
英文摘要: In the present work, we simulate the Pliocene climate with the EC-Earth climate model as an equilibrium state for the current warming climate induced by rising CO2 in the atmosphere. The simulated Pliocene climate shows a strong Arctic amplification featuring pronounced warming sea surface temperature (SST) over the North Atlantic, in particular over the Greenland Sea and Baffin Bay, which is comparable to geological SST reconstructions from the Pliocene Research, Interpretation and Synoptic Mapping group (PRISM; Dowsett et al., 2016). To understand the underlying physical processes, the air-sea heat flux variation in response to Arctic sea ice change is quantitatively assessed by a climate feedback and response analysis method (CFRAM) and an approach similar to equilibrium feedback assessment. Given the fact that the maximum SST warming occurs in summer while the maximum surface air temperature warming happens during winter, our analyses show that a dominant ice-albedo effect is the main reason for summer SST warming, and a 1 % loss in sea ice concentration could lead to an approximate 1.8 W mĝ'2 increase in shortwave solar radiation into open sea surface. During the winter months, the insulation effect induces enhanced turbulent heat flux out of the sea surface due to sea ice melting in previous summer months. This leads to more heat released from the ocean to the atmosphere, thus explaining why surface air temperature warming amplification is stronger in winter than in summer. © 2019. This work is distributed under the Creative Commons Attribution 4.0 License.
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被引频次[WOS]:23   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122241
Appears in Collections:气候变化事实与影响

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作者单位: Department of Physical Geography and Bolin Centre for Climate Research, Stockholm University, Stockholm, 10691, Sweden; School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China; Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, Florida 32306, United States

Recommended Citation:
Zheng J.,Zhang Q.,Li Q.,et al. Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation[J]. Climate of the Past,2019-01-01,15(1)
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