| DOI: | 10.3354/cr01363
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| Scopus记录号: | 2-s2.0-84961837990
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| 论文题名: | Sea ice impacts on polar surface weather types in the North American Arctic |
| 作者: | Ballinger T.J.; Sheridan S.C.
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| 刊名: | Climate Research
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| ISSN: | 0936577X
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| 出版年: | 2016
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| 卷: | 67, 期:2 | | 起始页码: | 117
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| 结束页码: | 134
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| 语种: | 英语
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| 英文关键词: | Freeze-up
; Sea ice
; Spatial Synoptic Classification
; Weather typing
; Western Arctic
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| Scopus关键词: | air temperature
; ice cover
; sea ice
; seasonal variation
; surface temperature
; temperature anomaly
; troposphere
; Arctic Ocean
; North America
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| 英文摘要: | Summer and autumn sea ice conditions in the Western Arctic have rapidly changed in recent years, while increases in lower tropospheric air temperature and moisture have concurrently been observed across much of the high northern latitudes during the autumn (October to December) and winter (January to March) months. However, the spatiotemporal relationships between this region's ice cover and North American climate are not particularly well understood. This study employs a synoptic climatological weather typing scheme known as the Spatial Synoptic Classification (SSC) to holistically evaluate temperature and moisture characteristics throughout the terrestrial North American Arctic (NAA) associated with the Western Arctic sea ice freezeup dates from 1979 to 2013. Monthly climatologies and linear trends of autumn/winter-dominant SSC weather types in the region, Moist Polar (MP) and Dry Polar (DP), are assessed and statistically linked to the freeze dates. Results suggest that the MP weather types are increasing, at the expense of DP types, across much of the domain. The apparent NAA transition to MP conditions is positively correlated with the timing of the Western Arctic freeze-up, and far more MP days occur during late-freeze versus early-freeze years, especially at the most northerly weather stations. Positive near-surface temperature anomalies and northerly low-level winds across the Western Arctic Ocean during late minus early freeze years potentially connect delayed ice for mation to a changing NAA climate. © Inter-Research 2016. |
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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/116415
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| Appears in Collections: | 气候减缓与适应
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| Recommended Citation: | |
Ballinger T.J.,Sheridan S.C.. Sea ice impacts on polar surface weather types in the North American Arctic[J]. Climate Research,2016-01-01,67(2)
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