DOI: 10.1007/s00382-013-1897-3
Scopus记录号: 2-s2.0-84895016722
论文题名: Sensitivity of Arctic warming to sea surface temperature distribution over melted sea-ice region in atmospheric general circulation model experiments
作者: Jun S.-Y. ; Ho C.-H. ; Kim B.-M. ; Jeong J.-H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-03-04 起始页码: 941
结束页码: 955
语种: 英语
英文关键词: Arctic warming
; General circulation model
; Melting
; Sea-ice
; Surface heat flux
英文摘要: Substantial reduction in Arctic sea ice in recent decades has intensified air-sea interaction over the Arctic Ocean and has altered atmospheric states in the Arctic and surrounding high-latitude regions. This study has found that the atmospheric responses related to Arctic sea-ice melt in the cold season (October-March) depend on sea-ice fraction and are very sensitive to in situ sea surface temperature (SST) from a series of atmospheric general circulation model (AGCM) simulations in which multiple combinations of SSTs and sea-ice concentrations are prescribed in the Arctic Ocean. It has been found that the amplitude of surface warming over the melted sea-ice region is controlled by concurrent in situ SST even if these simulations are forced by the same sea-ice concentration. Much of the sensitivity of surface warming to in situ SST are related with large changes in surface heat fluxes such as the outgoing long-wave flux in early winter (October-December) and the sensible and latent heat fluxes for the entire cold season. Vertical extension of surface warming and moistening is sensitive to these changes as well; the associated condensational heating modulates a static stability in the lower troposphere. This study also indicates that changes in SST fields in AGCM simulations must be implemented with extra care, especially in the melted sea-ice region in the Arctic. The statistical method introduced in this study for adjusting SSTs in conjunction with a given sea-ice change can help to model the atmospheric response to sea-ice loss more accurately. © 2013 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54300
Appears in Collections: 过去全球变化的重建
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作者单位: School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Korea Polar Research Institute, Inchon, 406-840, South Korea; Chonnam National University, Gwangju, South Korea
Recommended Citation:
Jun S.-Y.,Ho C.-H.,Kim B.-M.,et al. Sensitivity of Arctic warming to sea surface temperature distribution over melted sea-ice region in atmospheric general circulation model experiments[J]. Climate Dynamics,2014-01-01,42(2017-03-04)