祁連山区的气压系統

PRESSURE SYSTEMS IN THE MOUNTAINEOUS REGION OF WESTERN KANSU

中文摘要:

      通过祁連山及其邻近地区高度在3000米左右的三十多个地面观測站和附近十多个探空站气压的分析,发現在山区平均气压图上存在着五个中型气压系統:即疏勒河高压、山区东段高压、黑河低压、柴达木低压及(黄河)河曲低压。討論了它們的强度范围和位置的年变化;并由冬季山区各要素的分布状况,推測出存在于山区的平均垂直环圈与气压系統是相对应的;分析了两个中型系統影响雨量分布的实例。最后,討論了这些系統与溫度場的关系。

英文摘要:

      Based on more than 30 surface stations situated at a height near 3000 m and more 10 resonde stations the pressure systems over the mountaneous region of Western Kansu are analyzed. Five meso-pressure systems, two highs and three lows are found on the mean chart. The annual variations of their intensity and positions are discussed. Two case-studies are made of these meso-systems. Finally the relationship between the temperature field and these meso-systems is discussed.