Item type |
会議発表用資料 / Presentation(1) |
公開日 |
2016-12-28 |
タイトル |
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タイトル |
大気大循環モデルを用いた南極周辺の海氷が大気循環に与える影響 |
タイトル |
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言語 |
en |
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タイトル |
Influence of Antarctic sea ice anomaly upon atmospheric circulation in the Southern Hemisphere by using AGCM |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_c94f |
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資源タイプ |
conference object |
著者 |
緒方, 香都
立花, 義裕
大島, 和裕
Koto, Ogata
Yoshihiro, Tachibana
Kazuhiro, Oshima
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We investigated an influence of sea ice anomaly in the Pacific sector of the Southern Ocean upon large-scale atmospheric circulation using an Atmospheric General Circulation Model (AGCM). It is well known that Pacific South American (PSA) teleconnection pattern is induced by El Niño-Southern Oscillation (ENSO) over the Southern Hemisphere. Changes in zonal winds associated with the PSA pattern affect sea ice anomalies in the Amundsen-Bellingshausen Sea (Pacific sector) and the Weddell Sea (Atlantic sector) of the Southern Ocean, which is called Antarctic Dipole (ADP) pattern. Based on the ADP sea-ice anomalies, an AGCM simulation under the low sea-ice condition in the Pacific sector and Atlantic sector (Ice run) are conducted. Comparison of geopotential height at 500 hPa between the Ice run and NCEP/NCAR Reanalysis indicated that the sea ice condition in the Pacific sector enhances positive phase of PSA pattern anomalies over western part of the Southern Hemisphere. |
会議概要(会議名, 開催地, 会期, 主催者等) |
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内容記述タイプ |
Other |
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内容記述 |
第4回極域科学シンポジウム 個別セッション:[OM] 気水圏 11月14日(木) 統計数理研究所 3階セミナー室1(D305) |
発表年月日 |
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日付 |
2013-11-14 |
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日付タイプ |
Issued |