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The investigation reveals that on the reduction of its height, the troposphere over Antarctica will become warmer and wetter, annual precipitation and snow accumulation would enhance, and there will be a net enhancement in southward energy transport towards the Antarctic from the lower latitudes. The response will be opposite if the height of the AIS increases. The effect is found to be driven by the radiation imbalance developed from the changes in the outgoing longwave radiation at the top of the atmosphere due to perturbations in the ice sheet\u0027s elevation. An increase (decrease) in precipitation will occur on reduction (enhancement) of the AIS, which will try to stabilize its height, but this will be accompanied by an increase (decrease) in the surface temperature, which would have an opposite effect. 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Influence of the height of Antarctic ice sheet on its climate
https://nipr.repo.nii.ac.jp/records/16483
https://nipr.repo.nii.ac.jp/records/16483d74c13fe-bf8b-438d-9438-c7601ec38e9d
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2021-07-29 | |||||
タイトル | ||||||
タイトル | Influence of the height of Antarctic ice sheet on its climate | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Influence of the height of Antarctic ice sheet on its climate | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Antarctica | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | General circulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Topography-precipitation feedback | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Polar climate | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | CMIP5 | |||||
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 |
Tewari, Kamal
× Tewari, Kamal× Mishra, Saroj K.× Dewan, Anupam× Dogra, Gaurav× Ozawa, Hisashi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The influence of the height of the Antarctic Ice Sheet (AIS) on its climate is investigated through numerical modeling, using NCAR-CESM-CAM5, which is found to be one of the best performing models over the region. The investigation reveals that on the reduction of its height, the troposphere over Antarctica will become warmer and wetter, annual precipitation and snow accumulation would enhance, and there will be a net enhancement in southward energy transport towards the Antarctic from the lower latitudes. The response will be opposite if the height of the AIS increases. The effect is found to be driven by the radiation imbalance developed from the changes in the outgoing longwave radiation at the top of the atmosphere due to perturbations in the ice sheet's elevation. An increase (decrease) in precipitation will occur on reduction (enhancement) of the AIS, which will try to stabilize its height, but this will be accompanied by an increase (decrease) in the surface temperature, which would have an opposite effect. A significant influence of the AIS elevation was also felt on the surface winds, stationary waves, and the eddy-driven jet around the continent, highlighting the impact that changes in the height of AIS have on the surrounding atmospheric circulation. | |||||
書誌情報 |
en : Polar Science 巻 28, p. 100642, 発行日 2021-06 |
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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.2021.100642 | |||||
関連名称 | 10.1016/j.polar.2021.100642 |