| DOI: | 10.1175/JCLI-D-11-00690.1
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| Scopus记录号: | 2-s2.0-84872921470
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| 论文题名: | Synoptic weather types for the ross sea region, Antarctica |
| 作者: | Cohen L.; Dea S.; Renwick J.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2013
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| 卷: | 26, 期:2 | | 起始页码: | 636
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| 结束页码: | 649
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| 语种: | 英语
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| Scopus关键词: | Amundsen Sea
; Antarctic coasts
; Antarctic Peninsula
; Antarctica
; Atmospheric circulation
; Climate cycle
; Ice core
; Local climate
; Low pressure systems
; NCEP reanalysis
; Ross ice shelves
; Ross Sea
; Snow and ice
; Source region
; Southern Annular Mode
; Southern ocean
; Southern oscillation index
; Synoptic classification
; Synoptic conditions
; Temperature regimes
; Transport pathways
; Weather types
; Climatology
; Digital storage
; Nickel compounds
; Saline water
; correlation
; low pressure system
; regression analysis
; Southern Oscillation
; synoptic meteorology
; Antarctica
; Ross Sea
; Southern Ocean
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| 英文摘要: | Synoptic classifications over the Southern Ocean in the Ross Sea region of Antarctica (508S-Antarctic coast, 1508E-908W) have been derived from NCEP reanalysis data (1979-2011), producing a set of six synoptic types for the region. These types describe realistic synoptic conditions for the region and represent the moisture-bearing low pressure systems that circulate around Antarctica. The types are described as follows: lowBellingshausen/Amundsen (L-BA), low (L), zonal (Z), lowRoss (L-R), ridge (R), and lowAmundsen (L-A). Seasonal frequencies of the synoptic types reflect the seasonal zonal shift of the Amundsen Sea low (ASL) and also correlate well with the Southern Oscillation index (SOI) and the southern annular mode (SAM). Variability in the occurrences of the synoptic types L-R and L-BA indicate a shifting of the position of the ASL farther east (west) toward (away from) the Antarctic Peninsula during La Nin~ a (El Nin~ o) and positive (negative) SAM conditions. A joint linear regression of the SOI and SAM indices show the strongest correlations with thetypes L-BA and L-R in the spring and quantifies the joint forcing effect of these climate cycles on synoptic variabilityin the region. As a demonstration of how synoptic classification provides links between large-scale atmospheric circulation and local climate parameters, the synoptic types are related to precipitation and temperature at Roosevelt Island, an ice core site on the Ross Ice Shelf (808S, 1608W). The synoptic types provide quantification of distinct precipitationand temperature regimes at this site, which allows for more fundamental understanding of the precipitation source regions and transport pathways that drive the variability in snow and ice proxies. © 2013 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52048
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Antarctic Research Centre, Victoria University, Wellington, New Zealand; National Institute of Water and Atmospheric Research, Wellington, New Zealand
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| Recommended Citation: | |
Cohen L.,Dea S.,Renwick J.. Synoptic weather types for the ross sea region, Antarctica[J]. Journal of Climate,2013-01-01,26(2)
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