京津冀地区“23·7”特大暴雨精细化特征及成因分析
姬雪帅, 康博思, 侯晓琦, 郭旭晖, 石文伯, 黄山江

Refined characteristics and cause analysis of the “23·7” extraordinary heavy rainfall in Beijing-Tianjin-Hebei region
JI Xueshuai, KANG Bosi, HOU Xiaoqi, GUO Xuhui, SHI Wenbo, HUANG Shanjiang
图7 2023年7月30日14:00(a、c)和31日14:00(b、d)925 hPa锋生函数(灰色阴影,单位:10-9 K·m-1·s-1)和假相当位温(等值线,单位:K)(a、b)及沿115.5°E的经向风和垂直速度合成矢量(矢量箭头,单位:m·s-1)、假相当位温(等值线,单位:K)和锋生函数(灰色阴影,单位:10-9 K·m-1·s-1)的纬度-高度剖面(c、d)
(黑色阴影是地形)
Fig.7 The 925 hPa frontogenetic function (the grey shaded, Unit: 10?? K·m?¹·s?¹) and pseudo-equivalent potential temperature (isolines, Unit: K) (a, b), and the latitude-height cross sections of the zonal wind and vertical velocity composite vector (vector arrows, Unit: m·s?¹), pseudo-equivalent potential temperature (isolines, Unit: K), and frontogenetic function (the grey shaded, Unit: 10?? K·m?¹·s?¹) along 115.5°E (c, d) at 14:00 on 30 (a, c) and 14:00 on 31 (b, d) July 2023
(The black shaded represents the terrain)