Three-dimensional structure of climate in Yakushima Island

屋久岛气候三维结构

• 批准号: 12680090
• 负责人: EGUCHI Takashi
• 金额: $ 1.79万
• 依托单位: Kochi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680090/
• 关键词: Mountain Climate; Yakushima; Temperature; Relative Humidity; Inversion; 気温減率; 湿度; 上層風; 雲霧帯; 強風; 多雨; 梅雨; 台風; 地形性降水; 低気圧

The purpose of this study is to clarify the altitudinal change in climate of Yakushima Island based on the observed data. The relationship between the vertical structure of free atmosphere at Kagoshima and the altitudinal change in temperature and relative humidity at Yakushima Island are mainly analyzed.The inversion of temperature between Yodogou (1360m) and Kuromi-dake mountain (1800m) and the large decrease of relative humidity from Yodogou to Kuromi-dake mountain often occur under the control of traveling anticyclone on a synoptic condition. In this case, the inversion layer tends to develop between 1000m and 1500m in the free atmosphere of Kagoshima. The changes of temperature and relative humidity around the top of mountain are similar to those of the free atmosphere. On the contrary, the changes of temperature and relative humidity at Yodogou do not correspond to those of the free atmosphere. This altitudinal difference of climatic relationship between mountain slope and free atmosphere depend on the difference of vegetation.Considering these results, the altitudinal difference of climate in Yakushima Island is thought to be caused by the interaction between the vertical structure of free air and the altitudinal difference of vegetation.

这项研究的目的是根据观测数据澄清八岛气候的海拔变化。主要分析了鹿儿岛自由大气的垂直结构与屋久岛岛温湿度的高度变化的关系。在天气条件下，在行进反气旋的控制下，常出现由约道沟(1360m)至黑宫山(1800m)之间的逆温，以及由约道沟至黑尾山(1800m)相对湿度的大幅度下降。在这种情况下，鹿儿岛自由大气中的逆温层倾向于在1000米到1500米之间发展。山顶周围的温度和相对湿度的变化与自由大气的变化相似。相反，窑道沟的温度和相对湿度的变化与自由大气的变化并不一致。山坡与自由大气气候关系的这种高度差异取决于植被的差异，据此认为，雅库岛岛气候的高度差异是自由空气垂直结构与植被高度差异相互作用的结果。