太行山南麓大气水汽含量与降水效率研究

基金项目:

山西省气象局基金项目(SXKMSTQ20160726)

详细信息

Study on Atmospheric Water Vapor Content and Precipitation Efficiency at the Southern Foot of Taihang Mountain

摘要: 大气中天气系统的水汽含量对降水的影响非常大。研究表明，2010—2017年太行山南麓500～1000 hPa气柱年平均水汽含量处于4.52～4.65 g/cm²，波峰和波谷相差0.13 g/cm²，平均降水效率为8.1%。降水效率与降水量大小和天气系统有关，降水量为10～50 mm时，降水效率随降水量增大而增大；不同类型的天气系统，西南或者东南来的天气系统，降水效率相对较大，而北方天气系统，降水效率较低。
- 降水效率 /
- 水汽含量 /
- 天气系统
Abstract: The water vapor content of the weather system in the atmosphere has a great influence on precipitation. Research shows that the annual average water vapor content of the gas column from 500 to 1000 hPa from 2010 to 2017 at the southern foot of Taihang Mountain is between 4.52 and 4.65 g/cm², the difference between the peak and trough is 0.13 g/cm², and the average precipitation efficiency is 8.1%. Precipitation efficiency is related to precipitation size and weather system. When precipitation is 10–50 mm, precipitation efficiency increases with the increase of precipitation. Different types of weather systems, weather systems from southwest or southeast, have relatively high precipitation efficiency, while northern weather systems have relatively low precipitation efficiency.
- precipitation efficiency /
- water vapor content /
- weather system