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Roles of ice-bands for the formation of seasonal ice zone

冰带对季节性冰区形成的作用

基本信息

批准号：
14540410
负责人：
ISHIDA Kunimitsu
金额：
$ 1.86万
依托单位：
Toba National College of Maritime Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540410/
关键词：
Ice Band Antarctic Ocean Seasonal Ice Zone Sea Ice Melt Ice Concentration Ice-Ocean Coupled Model Ice-Albedo Feedback MOS-1 1b MESSR 氷縁 Wave radiation theory 大気場 ECMWF 1b MESSR

项目摘要

A statistical relationship between structures of ice bands and atmospheric conditions is examined by using ECMWF data and MOS-1/1b MESSR images received at Syowa Station, Antarctica. In these results, it is found that there are high correlation between structures of ice bands and atmospheric conditions. The results are summarized as follows :(1) It is suggested that the width and spacing of ice bands are correlated with atmospheric conditions averaged over several days.(2) Long axes of bands are oriented at 70-90° to the right of the wind direction that are influenced strongly by wind fields averaged over several days.(3) During period of off-ice winds, it is found that the width and spacing of ice bands tend to decrease from the interior region to the ice margin. It is suggested that the scales of ice bands decreases from winter to summer not only by decrease of ice floe size but also by decrease of wind speed.In the Antarctic Ocean, sea ice melts mostly by warming of the ocean mixed … More layer through heat input (mainly solar radiation) in open water area. We propose a simplified ice-upper ocean coupled model in which sea ice melts only by the ocean heat supplied from the air. The model shows that the relationship between ice concentration and mixed layer temperature converges asymptotically with time (CT-relationship), which agree with observation CT-plots during summer in the sector 25 ° -45 ° E. The model shows that the ratio of the heat used for melting to the heat input through open water is inclined to be determined as a function of ice concentration. For typical conditions in the Antarctic ice melt season, the ration ranges mostly between 0.7 and 0.9. When the model is extended to two-dimensions in the meridional direction, with the inclusion of wind forcing, it approximately reproduces the meridional retreat of the Antarctic sea ice. This two-dimensional model can describe the open water-albedo feedback effect, which partly explains the year-to-year variation of the sea ice retreat in the Antarctic Ocean. Less

利用ECMWF观测资料和MOS-1/1b卫星MESSR图像，研究了南极雪娃站冰带结构与大气条件的统计关系。结果表明，冰带的结构与大气条件有很强的相关性。结果表明：（1）冰带的宽度和间距与几天平均的大气条件有关。(2)带的长轴指向风向右侧70-90°，受几天平均风场的强烈影响。(3)在离冰风期间，冰带的宽度和间距从冰内到冰缘逐渐减小。从冬季到夏季，冰带的尺度减小，不仅是由于浮冰的减小，也是由于风速的减小，在南极海洋，海冰融化主要是由于海洋变暖的混合 ...更多信息在开阔水域，通过热输入（主要是太阳辐射）对水层进行加热。我们提出了一个简化的冰-上层海洋耦合模式，其中海冰融化仅由海洋热量提供的空气。模型表明，冰浓度与混合层温度之间的关系随时间渐近收敛（CT关系），与25 ° ~ 45 ° E扇区夏季CT观测图一致。该模型表明，用于融化的热量通过开放的水输入的热量的比例是倾向于确定作为冰浓度的函数。在南极洲融冰季节的典型条件下，该比值大多在0.7和0.9之间。当模式在纬向扩展到二维时，加上风强迫，它近似地再现了南极海冰的纬向退缩。该二维模式能够描述南极海冰退缩的开放水域-冰反馈效应，部分解释了南极海冰退缩的年际变化。少

项目成果

期刊论文数量（22）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

南極海におけるアイスバンド構造と大気場の関係

南大洋冰带结构与大气场的关系

DOI：
发表时间：
2003
期刊：
第26回極域気水圏シンポジウムプログラム・講演要旨
影响因子：
0
作者：
石田邦光;大島慶一郎
通讯作者：
大島慶一郎

南極海におけるアイスバンドの特徴と風との関係

南大洋冰带特征及其与风的关系

DOI：
发表时间：
2004
期刊：
第27回極域気水圏シンポジウムプログラム・講演要旨
影响因子：
0
作者：
石田邦光;大島慶一郎
通讯作者：
大島慶一郎

A relationship between features of ice bands and wind fields in the Antarctic Ocean

南极海洋冰带特征与风场的关系

DOI：
发表时间：
2004
期刊：
The 27th Symposium on Polar Meteorology and Glaciology Programme and Abstracts
影响因子：
0
作者：
Kunimitsu ISHIDA;Kay I.OHSHIMA
通讯作者：
Kay I.OHSHIMA

マッハツェンダ干渉計を用いる複数の光干渉像から推定する音場計測

使用马赫曾德干涉仪从多个光学干涉图像估计声场测量