DOI: 10.1038/ngeo2751
论文题名: Antarctic sea-ice expansion between 2000 and 2014 driven by tropical Pacific decadal climate variability
作者: Meehl G.A. ; Arblaster J.M. ; Bitz C.M. ; Chung C.T.Y. ; Teng H.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期: 8 起始页码: 590
结束页码: 595
语种: 英语
Scopus关键词: atmospheric circulation
; atmospheric convection
; climate change
; climate modeling
; cooling
; heating
; Pacific Decadal Oscillation
; precipitation (climatology)
; satellite data
; sea ice
; sea surface temperature
; Amundsen Sea
; Antarctica
; Pacific Ocean
; Pacific Ocean (Tropical)
; Ross Sea
; Southern Ocean
英文摘要: Antarctic sea-ice extent has been slowly increasing in the satellite record that began in 1979. Since the late 1990s, the increase has accelerated, but the average of all climate models shows a decline. Meanwhile, the Interdecadal Pacific Oscillation, an internally generated mode of climate variability, transitioned from positive to negative, with an average cooling of tropical Pacific sea surface temperatures, a slowdown of the global warming trend and a deepening of the Amundsen Sea Low near Antarctica that has contributed to regional circulation changes in the Ross Sea region and expansion of sea ice. Here we show that the negative phase of the Interdecadal Pacific Oscillation in global coupled climate models is characterized by anomalies similar to the observed sea-level pressure and near-surface 850 hPa wind changes near Antarctica since 2000 that are conducive to expanding Antarctic sea-ice extent, particularly in the Ross Sea region in all seasons, involving a deepening of the Amundsen Sea Low. These atmospheric circulation changes are shown to be mainly driven by precipitation and convective heating anomalies related to the Interdecadal Pacific Oscillation in the equatorial eastern Pacific, with additional contributions from convective heating anomalies in the South Pacific convergence zone and tropical Atlantic regions. © 2016 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105956
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: National Center for Atmospheric Research, Boulder, CO, United States; Monash University, Melbourne, Australia; University of Washington, Seattle, WA, United States; Bureau of Meteorology, Melbourne, Australia
Recommended Citation:
Meehl G.A.,Arblaster J.M.,Bitz C.M.,et al. Antarctic sea-ice expansion between 2000 and 2014 driven by tropical Pacific decadal climate variability[J]. Nature Geoscience,2016-01-01,9(8)