DOI: 10.1175/JCLI-D-17-0184.1
Scopus记录号: 2-s2.0-85040599609
论文题名: Low-frequency climate modes and Antarctic sea ice variations, 1982-2013
作者: Cerrone D. ; Fusco G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 1 起始页码: 147
结束页码: 175
语种: 英语
英文关键词: Atmosphere-ocean interaction
; Climate variability
; Ice loss/growth
; Indices
; Oscillations
; Trends
Scopus关键词: Atmospheric thermodynamics
; Sea ice
; Sea level
; Atmosphere-ocean interactions
; Climate variability
; Ice loss/growth
; Indices
; Oscillations
; Trends
; Ice
; air-sea interaction
; climate variation
; cooling
; oscillation
; sea ice
; seasonal variation
; Southern Hemisphere
; trend analysis
; Antarctica
英文摘要: The NCEP-NCAR composite dataset (comprising sea level pressure, 500-hPa geopotential height, 500-hPa temperature, and meridional wind stress at 10 m above the surface) is used for compiling a set of climate indices describing the most important physical modes of variability in the Southern Hemisphere (SH): the southern annular mode (SAM), semiannual oscillation (SAO), Pacific-South American (PSA), and quasi-stationary zonal wavenumber 3 (ZW3) patterns. Compelling evidence indicates that the large increase in the SH sea ice, recorded over recent years, arises from the impact of climate modes and their long-term trends. The examination of variability ranging from seasonal to interdecadal scales, and of trends within the climate patterns and total Antarctic sea ice concentration (SIC) for the 32-yr period (1982-2013), is the key focus of this paper. The results herein indicate that a progressive cooling has affected the year-to-year climate of the sub-Antarctic since the 1990s. This feature is found in association with increased positive SAM and SAO phases detected in terms of upward annual and seasonal trends (in autumn and summer) and upward decadal trends. In addition, the SIC shows upward annual, spring, and summer trends, indicating the insulation of Antarctica from the warmer flows in the midlatitudes. This picture of variations is also found to be consistent with the upward trends detected for the PSA and ZW3 patterns on the annual scale and during the last two decades. Evidence of a more frequent occurrence of the PSA-ZW3 combination could explain, in part, the significant increase of the regional and total Antarctic sea ice coverages. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111699
Appears in Collections: 气候减缓与适应
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作者单位: Science and Technology Department (DiST), University of Naples Parthenope, Naples, Italy; Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy
Recommended Citation:
Cerrone D.,Fusco G.. Low-frequency climate modes and Antarctic sea ice variations, 1982-2013[J]. Journal of Climate,2018-01-01,31(1)