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Aspects of intraseasonal variability of Antarctic sea ice in austral winter related to ENSO and SAM events
http://hdl.handle.net/10659/00005929
http://hdl.handle.net/10659/0000592955a26390-d687-4315-9ec2-f09de4041438
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
R-2018-230_baba.pdf (819.1 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2019-08-08 | |||||
| タイトル | ||||||
| タイトル | Aspects of intraseasonal variability of Antarctic sea ice in austral winter related to ENSO and SAM events | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | atmosphere/ice/ocean interactions | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | climate change | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | sea ice | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | atmosphere/ice/ocean interactions | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | climate change | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | sea ice | |||||
| 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 | |||||
| 著者 |
馬場, 賢治
× 馬場, 賢治× RENWICK, JAMES |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We performed an Empirical Orthogonal Function (EOF) analysis to assess the intraseasonal variability of 5–60 day band-pass filtered Antarctic sea-ice concentration in austral winter using a 20-year daily dataset from 1995 to 2014. Zonal wave number 3 dominated in the Antarctic, especially so across the west Antarctic. Results showed the coexistence of stationary and propagating wave components. A spectral analysis of the first two principal components (PCs) showed a similar structure for periods up to 15 days but generally more power in PC1 at longer periods. Regression analysis upon atmospheric fields using the first two PCs of sea-ice concentration showed a coherent wave number 3 pattern. The spatial phase delay between the sea-ice and mean sea-level pressure patterns suggests that meridional flow and associated temperature advection are important for modulating the sea-ice field. EOF analyses carried out separately for El Niño, La Niña and neutral years, and for Southern Annular Mode positive, negative and neutral periods, suggest that the spatial patterns of wave number 3 shift between subsets. The results also indicate that El Niño-Southern Oscillation and Southern Annular Mode affect stationary wave interactions between sea-ice and atmospheric fields on intraseasonal timescales. | |||||
| 書誌情報 |
Journal of Glaciology 巻 63, 号 241, p. 838-846, 発行日 2017-10 |
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| ISBN | ||||||
| 識別子タイプ | ISBN | |||||
| 関連識別子 | 0022-1430 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | http://dx.doi.org/10.1017/jog.2017.49 | |||||
| 権利 | ||||||
| 権利情報 | © The Author(s) 2017 | |||||
| 権利（URI） | ||||||
| 権利情報 | http://creativecommons.org/licenses/by/4.0/ | http://creativecommons.org/licenses/by/4.0/ | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 出版者 | ||||||
| 出版者 | Cambridge University Press | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Article | |||||
