四川盆地一次极端暴雨过程的演变及成因分析
李梦, 竹利, 张悦含

Evolution and cause analysis of an extreme rainstorm process in the Sichuan Basin
LI Meng, ZHU Li, ZHANG Yuehan
图5 2021年8月7日20:00(a)、8日04:00(b)500 hPa位势高度场(蓝色等值线,单位:dagpm)叠加700 hPa风场(风矢,单位:m·s-1)、急流风速(填色,单位:m·s-1)及850 hPa温度露点差(红色等值线,单位:℃)
(红色三角为极端暴雨落区,字母D为低压中心)
Fig.5 The 500 hPa geopotential height field (blue contours, Unit: dagpm) superimposed with the wind field (wind vectors, Unit: m·s-1), jet stream wind speed (the color shaded, Unit: m·s-1) at 700 hPa and 850 hPa temperature dew point difference (red isolines, Unit: ℃) at 20:00 on 7 (a) and 04:00 on 8 (b) August 2021
(the red triangle is the extreme rainstorm area, the letter D is the low pressure center)