1980—1987年华北地区上空水汽输送特征

本文根据1980—1987年华北及附近地区的每日两次常规探空资料,计算了华北地区上空的水汽输送特征,并用陆面水量平衡及大气水份平衡方程讨论了华北地区人类活动在水循环过程中的作用.计算表明,华北地区的水汽输送方向、李节变化、垂直结构和水汽源地等方面都反映了东亚季风环流的特点。华北地区80年代水汽输送造成水份亏损,这一亏损靠地表及地下水过量开采的水量来补偿,这说明在华北水循环过程中人类活动的影响是一个很重要的因子.

Analysis on the Processed of Water Vapor Transfer over North China During 1980-1987

In this paper, the rawinsonde data twice per day from 1980 to 1987 are used to calculate and analyse the water vapor transfer process over North China . The effect of human activity on the water cycle in North China is discussed using the balance equations of the atmospheric water vapor and the terrestrial water . The results show that the vapor transfer characteristics such as the transfer direction, seasonal changes, vertical structure , and water vapor sources are determined by the east Asia monsoon circulation . Teh vapor transfer over North China in the 1980s has caused a large amount of water loss in the atmosphere and the loss is compensated by the excessive water pumping from the underground . This suggests that the human activity effect is an important element in the water cycle process of North China .