Regionality of weather distribution in Japan

日本天气分布的区域性

• 批准号: 60580196
• 负责人: KAWAMURA Takeshi
• 金额: $ 0.77万
• 依托单位: Institute of Geoscience, University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60580196/
• 关键词: climate of Japan; Dynamic climatology; synoptic climatology; 天気の局地性; 気候区分

Winter climate of Japan is strongly affected by winter monsoon. It results the cold temperature and heavy snow on the Japan Sea side and the cold dry and fine weather on the Pacific Ocean Side of Japanese Islands. Location af weather divide has changed by the direction of air flow and effect of topography. Then the purpose of this study is to make the regional division of weather and local winds related to the winter monsoon. Firstly, the distribution maps of the percentage frequency of precipitation amount over 1mm/day, 5mm/day, 10mm/day and 20mm/day were made for each flow type decided by gradient wind direction at 850mb level. In order to subdivide the climatic region with regard to weather, the following isolines of percentage frequency were noted; 10% and 90% in maps over 1mm/day and 5mm/day and so on. On the other hand regional division by local wind was attempted. Especially, air shed of the local winds and the location of the area of strong and calm winds were clearly divided.

日本冬季气候受冬季季风的影响较大。它导致日本海一侧温度寒冷，大雪，而日本岛屿太平洋一侧天气寒冷干燥，天气晴朗。气候带位置受气流方向和地形影响而发生变化。然后，本研究的目的是对与冬季季风有关的天气和局地风进行区域划分。首先，在850mb风速梯度下，绘制各流型1mm/day、5mm/day、10mm/day、20mm/day以上降水百分比频率分布图。为了根据天气细分气候区，记录了下列频率百分比等值线；10%和90%的地图超过1毫米/天和5毫米/天等等。另一方面，尝试用局地风进行区域划分。特别是对局地风的气棚以及强风和平静风区域的位置进行了明确的划分。

项目成果

Kawamura, T.: "Detailed distribution maps in percentage frequency of daily precipitation due to winter mosnsoon in Jaoan, classified by flow direction st 850mb level. Climatogical Notes.36. 1-75" Climtologicl NOtes. 36. 1-75 (1986)

Kawamura, T.：“Jaoan 冬季季风引起的每日降水百分比频率的详细分布图，按流向 st 850mb 级别分类。气候注释.36. 1-75”气候学注释。

T.Kawamura: Climatological Notes. 36. 1-75 (1986)

T.Kawamura：气候学笔记。

T.Kawamura: Science Reports of the Institute of Geoscience,University of Tsukuba,Section A. 7. 19-39 (1986)

T.Kawamura：筑波大学地球科学研究所的科学报告，A 节 7. 19-39 (1986)

Kawamura, T.: "Regional division of winter weather and local winds in Japan." Science Report of Inst. Geoscience, University of Tsukuba Sect. A. 7. 19-39 (1986)

Kawamura, T.：“日本冬季天气和局地风的区域划分。”