华北地区一次低槽冷锋云系结构和增雨条件研究
史月琴1,2(), 赵俊杰3, 孙晶1,2, 孙玉稳4()
Study on cloud structure and rainfall enhancement condition of a low-trough cold-front cloud over North China
SHI Yueqin1,2(), ZHAO Junjie3, SUN Jing1,2, SUN Yuwen4()

图1. 2017年5月22日08:00(a、b)与20:00(c、d)位势高度、温度、风场、FY-2F卫星黑体亮温及比湿分布[(a、c)图中,红色虚等值线表示500 hPa温度(单位:℃),蓝色和黑色实等值线分别表示500 hPa和700 hPa位势高度(单位:dagpm),风矢(单位:m·s-1)表示700 hPa风场,填色表示FY-2F黑体亮温(单位:K)。(b、d)图中,紫色实等值线表示850 hPa位势高度(单位:dagpm),填色表示比湿(单位:g·kg-1),风矢(单位:m·s-1)表示10 m高度风场]

Fig.1. The distribution of geopotential height, temperature, wind field, black body temperature observed by satellite FY-2F and specific humidity at 08:00 BST (a, b) and 20:00 BST (c, d) May 22, 2017(In fig. a and fig. c, the red dashed isolines are temperature (Unit: ℃) at 500 hPa, the blue and black solid contours are geopotential height (Unit: dagpm) at 500 hPa and 700 hPa, respectively, wind vectors (Unit: m·s-1) are wind field at 700 hPa, the color shaded is black body temperature of FY-2F (Unit: K). In fig. b and fig. d, the purple solid contours are geopotential height (Unit: dagpm) at 850 hPa, the color shaded is specific humidity (Unit: g·kg-1) , and wind vectors are wind field at 10 m height (Unit: m·s-1))