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The Alaskan Arctic regime shift since 2017: A harbinger of years to come?
https://nipr.repo.nii.ac.jp/records/16952
https://nipr.repo.nii.ac.jp/records/169525ece0f2d-ee01-49af-b369-f8161721c4cf
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2022-06-17 | |||||
タイトル | ||||||
タイトル | The Alaskan Arctic regime shift since 2017: A harbinger of years to come? | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | The Alaskan Arctic regime shift since 2017: A harbinger of years to come? | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Alaska | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Aleutian Low | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Beaufort High | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Polar jet stream | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Regime shift | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Ballinger, Thomas J.
× Ballinger, Thomas J.× Overland, James E. |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Recent fingerprints of Alaskan Arctic climate change include new weather patterns whose impacts propagate through the Alaskan marine ecosystem. Multiple lines of observational evidence draw attention to the last five years (2017–2021) as a remarkable period of change. Bering Sea winter and spring ice coverage was remarkably low in 2018 and 2019 associated with a shifted Aleutian Low (AL) into the western Bering Sea, and ridging of the overlying polar jet stream (PJS) that supported southerly winds and reduced ice growth. The climatological Beaufort High and associated Beaufort Gyre saw multiple winter-long collapses (2017 and 2020), the only two such events of the modern reanalysis era. In contrast, from 2012 to 2016 the AL and PJS were located southeastward across the Gulf of Alaska, which supported sea ice growth. The recent collocation of the exposed ocean surface and atmospheric anomalies supports the emergence of a regional atmospheric circulation response to sea-ice loss. We propose that the regional system shift after 2017 foreshadows the beginning of a period with an increasing frequency of major sea-ice loss events and associated impacts – floods, delayed spring blooms, and marine food chain disruptions – which is sooner than projected by climate models. | |||||
書誌情報 |
en : Polar Science 巻 32, p. 100841, 発行日 2022-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2022.100841 | |||||
関連名称 | 10.1016/j.polar.2022.100841 |