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Analysis of satellite and model datasets for variability and trends in Arctic snow extent and depth, 1948–2006
https://nipr.repo.nii.ac.jp/records/10160
https://nipr.repo.nii.ac.jp/records/10160462650ac-1d85-4cdf-a949-c68918fc5eef
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2014-10-16 | |||||
タイトル | ||||||
タイトル | Analysis of satellite and model datasets for variability and trends in Arctic snow extent and depth, 1948–2006 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Analysis of satellite and model datasets for variability and trends in Arctic snow extent and depth, 1948–2006 | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Snow depth | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Snow cover extent | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Arctic lands | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Spatiotemporal variability | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Land surface model | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Satellite data | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Snow depth | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Snow cover extent | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Arctic lands | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Spatiotemporal variability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Land surface model | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Satellite data | |||||
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 |
Park, Hotaek
× Park, Hotaek× Yabuki, Hironori× Ohata, Tetsuo× Park, Hotaek× Yabuki, Hironori× Ohata, Tetsuo |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This study aims to investigate the spatiotemporal trends in snow depth (SD) and snow cover extent (SCE) for Arctic lands, excluding Greenland, for the period 1948–2006. The investigation not only delineates how the Arctic regions are manifesting significant annual trends in both SD and SCE, but also provides a comprehensive understanding of their historical context. To achieve these objectives, the combined resources of the hydrological and biogeochemical model (CHANGE), National Oceanic and Atmospheric Administration (NOAA) weekly SCE data, and in situ observations of SD were used. Most regions in the Arctic exhibited a significant negative trend in SD over the 59 years of study. The magnitude of the negative trend was stronger in North America than in Eurasia, where the decrease became more significant, starting from the late 1980s, coinciding well with the temperature rise during that time. During the same period, the warming temperature caused a prominent decrease in deeper SDs (i.e., >35 cm), so that the corresponding SCEs exhibited negative anomalies, with the greatest declines being observed at SDs > 55 cm. In contrast, the SCEs for SD ≤ 35 cm showed increased anomalies during the most recent two decades. The increased anomalies signify a sequential result induced by the decrease in the SCEs with deeper SDs, rather than the expansion of snow to snow-free regions. These changes resulted in a northward shift of the shallow SD line, which took place to a highly significant degree in North America. These results suggest that the Arctic SCE and SD will undergo more intense changes in response to the future climate warming. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 本研究は北極陸域における1948-2006間の積雪深及び面積の時・空間トレンドを調べることを目的とする。その結果、北極陸域の積雪深及び面積のトレンドやそれらの長期間の変動に対する理解が高まる。そのために、水文モデル(CHANGE)、NOAAの積雪カーバデータと観測データを用いた。過去59年間、多部分の陸域の積雪深は減少トレンドを示した。そのトレンドはユーラシアより北アメリカでより顕著であった。積雪深の減少は気温上昇の影響であることが明らかであった。気温上昇により35 cm以上の積雪深の面積でその減少が著しく、特に、55 cm以上の地域でより顕著に減少した。一方、積雪深35 cm以下の面積は1990年以降増加していた。その増加は、新たに積雪域が増えたことよりは厚い積雪深の面積の減少によるその連鎖結果であることを表す。また、北アメリカでは浅い積雪深のスノーラインが北上する変化が見られた。今後の気温上昇により北極陸域の積雪深及び面積は大きく影響されると予想される。 | |||||
書誌情報 |
Polar science en : Polar science 巻 6, 号 1, p. 23-37, 発行日 2012-04 |
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出版者 | ||||||
出版者 | 国立極地研究所 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12240481 | |||||
論文ID(NAID) | ||||||
識別子タイプ | NAID | |||||
関連識別子 | 110009418538 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1016/j.polar.2011.11.002 | |||||
関連名称 | 10.1016/j.polar.2011.11.002 |