论文部分内容阅读
利用1987~2006年重庆及其周边地区11个探空站的高空资料,分析了重庆地区各边界的水汽通量输送的特征。结果表明:重庆地区年平均整个层次各边界总的净水汽通量是正值,有净水汽流入重庆地区,其中在地面至850 hPa有最大净水汽输出,在700~500 hPa有最大净水汽输入。就季节变化而言,夏季和冬季有净水汽汇聚在重庆,而春季和秋季有净水汽流出重庆地区。重庆地区净水汽输入主要是南边界和西边界,北边界与东边界均是水汽输出边界。重庆地区年平均东边界和北边界水汽流出的减少趋势大于南边界和西边界水汽流入的减少趋势,导致年平均净水汽通量呈增加趋势。另外,春季和冬季净水汽通量呈下降趋势,而夏季和秋季净水汽通量呈上升趋势。
Based on the high altitude data of 11 sounding stations in Chongqing and its surrounding areas from 1987 to 2006, the characteristics of water vapor fluxes at each boundary of Chongqing were analyzed. The results showed that the total annual net water vapor flux of the entire annual average level in Chongqing was positive, and the net water vapor flowed into Chongqing. Among them, the maximum net water vapor output was from 850 hPa on the ground and the maximum was from 700 to 500 hPa Water vapor input. In terms of seasonal changes, summer and winter water vapor condenses in Chongqing, while spring and autumn water vapor flows out of Chongqing. The net water vapor input in Chongqing is mainly the southern boundary and the western boundary, and the northern boundary and the eastern boundary are the water vapor output boundaries. The decreasing trend of annual water vapor outflow in annual average eastern border and northern border in Chongqing is greater than the decreasing trend of water vapor inflow in the south border and western border, resulting in the annual average net water vapor flux increasing. In addition, the net flux of water vapor in spring and winter showed a downward trend while the net flux of water vapor in summer and autumn showed an upward trend.