The Role of Midlatitude and Subtropical Air-Sea Interactions in the Formation and Variability of the Atmospheric Circulation Systems
The Role of Midlatitude and Subtropical Air-Sea Interactions in the Formation and Variability of the Atmospheric Circulation Systems
批准号:
15340153
负责人:
NAKAMURA Hisashi
金额:
$10.5万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2003
资助国家:
日本
项目状态:
已结题
起止时间:
2003 至 2005
中文摘要
不喜欢其他中纬度海洋区域,北太平洋次北极前区域的异常表面热通量由局部海洋表面温度(SST)控制,与其固有的十进制变异性有关。这个海洋热作用力的伴侣是风暴轨道的子午线移位。我们的GPS-sonde观察表明,前沿SST分销公司在静态稳定性和边界层中的下行动力传输中的空间不同源性,导致SST和表面风速之间的积极相关性。在南部Hem,风暴0轨道核心在一年内与印度海洋中的主要海洋前沿区相关的表面Baroclinic Zone,在那里一个极前喷气式飞机(PFJ)与表面Westerlies形式执行到动力艾迪热传输。我们是第一个提出在风暴轨道、PFJ和海洋前沿区域中可能的动态关联的人。在南太平洋,在阿索克 ... More 在冬季,当较高级别的纸张被困在密集的亚热带喷气式飞机(STJ)中,下面是表面的障碍。我们的新概念可以为北太平洋风暴中的季节性比赛提供一个可行的解释。我们已经证实,Okhotsk表面的高性能响应于寒冷的上升,由一个较高水平的阻塞高度到其西北方向,以及一个放大器应该对来自北欧的罗斯比波浪列车传播的本地中断。由于不符合先前的标准,我们已经揭示了夏季亚热带抗生素表格对凉爽的东方海洋和温暖的海洋之间形成的热对比做出了反应,大陆干燥到东部。到澳大利亚南部,在那里有一个PFJ重叠器,带着一个带层极夜间喷气式飞机的垂直波浪形形式,通过一个静态的罗斯波火车从较低的stratosphere向下传播到生成局部的异常循环。Less(低)
英文摘要
・Unlike in other mid-latitude oceanic regions, anomalous surface heat flux in the North Pacific sub-arctic frontal zone is controlled by local sea-surface temperature (SST) anomalies associated with its inherent decadal variability. This oceanic thermal forcing accompanies meridional shift of the storm track. Our GPS-sonde observations have revealed that the frontal SST distribution accompanies spatial imhomogeneities in static stability and thereby downward momentum transport in the boundary layer, leading to positive correlation between SST and surface wind speed.・In the Southern Hemisphere, the storm0track core is anchored throughout the year along the surface baroclinic zone associated with the major oceanic frontal zone in the Indian Ocean, where a polar-front jet (PFJ) with surface westerlies forms due to poleward eddy heat transport. We are the first to point out a possible dynamical association among a storm-track, PFJ and oceanic frontal zone. Over the South Pacific, the assoc … More iation is disturbed in winter when upper-level eddies are trapped into an intensified subtropical jet (STJ), below which surface baroclinicity. Our new concept can provide a plausible interpretation for the seasonal march in the North Pacific storm-track.・We have revealed that the surface Okhotsk High forms in response to cold advection by anomalous low-level easterlies induced by an upper-level blocking high to its northwest, which amplifies due to local breaking of an Rossby wave-train propagating from northern Europe.・As opposed to the previous understanding, we have revealed that the summertime subtropical anticyclones form in response to the profound thermal contrast between the cool eastern ocean and the warm, dry continent to its east.・To the south of Australia, where a PFJ overlaps with the stratospheric polar-night jet, a vertical waveguide forms through which stationary Rossby wave-trains propagate from the lower stratosphere downward to generate localized anomalous circulation in the troposphere. Less
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日本の夏の天候を左右する二つのジェット気流-北欧と東地中海にある冷夏・暑夏の種
影响日本夏季天气的两股急流——北欧和东地中海夏季凉爽和炎热的类型
DOI:
--
发表时间:
2005
期刊:
科学 75(10)
影响因子:
--
作者:
[榎本 剛, 中村 尚]
通讯作者:
中村 尚
Geographical dependence o upper-level blocking formation associated with intraseasonal amplification of the Siberian High
与西伯利亚高压季节内放大相关的上层阻塞形成的地理依赖性
DOI:
--
发表时间:
2005
期刊:
Journal of the atmospheric Sciences 62・12
影响因子:
--
作者:
[K.Takaya, H.Nakamura]
通讯作者:
H.Nakamura
Seasonal transition of SST anomalies in the tropical Indian Ocean during EI Nino and Indian Ocean Dipole years
厄尔尼诺和印度洋偶极年热带印度洋海温异常的季节转换
DOI:
--
发表时间:
2004
期刊:
Journal of the Meteorological Society of Japan 82・4
影响因子:
--
作者:
[H.Tokinaga, Y.Tanimoto]
通讯作者:
Y.Tanimoto
オホーツクの冷たい海と大気循環変動
鄂霍茨克的寒冷海洋和大气环流变化
DOI:
--
发表时间:
2003
期刊:
天気 50・7
影响因子:
--
作者:
[Y.Tanimoto, H.Nakamura, T.Kagimoto, S.Yamane, 中村 尚]
通讯作者:
中村 尚
気候変動(Climate Change; Burroughs 原著)
气候变化(原作者:Burroughs)
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
[向川 均, 大淵 済, 谷本陽一(共訳)]
通讯作者:
谷本陽一(共訳)
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Valuation of corporate risk under asymmetric information
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Macroeconomic analysis of agency costs in financial intermediation under informational asymmetry
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Study of foreign migrant workers in search of their human rights protection system; chiefly upon the cases of Sri Lankan migrant workers
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Credit risk and contagion: Continuous-time optimal contract approach
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