秦岭北麓盛夏典型突发性降水过程中低层风特征
刘嘉慧敏, 李明, 欧阳雨, 吉庆, 王青霞, 李文耀, 李涵钰

Characteristics of low-level wind during typical sudden precipitation processes at the northern foot of Qinling Mountains in midsummer
LIU Jiahuimin, LI Ming, OUYANG Yu, JI Qing, WANG Qingxia, LI Wenyao, LI Hanyu
图9 2023年8月6日10:00 (a、b)、2023年7月12日19:00 (c、d)、2022年8月3日17:00 (e、f)长安区及周边925 hPa假相当位温(等值线,单位:K)、锋生函数(填色,单位:10-9 K·m-1·s-1)空间分布(a、c、e),假相当位温(等值线,单位:K)、锋生函数(填色,单位:10-9 K·m-1·s-1)及风场(风矢,单位:m·s-1)沿降水中心所在纬度的经度-高度剖面(b、d、f)
(红色方框为秦岭北麓锋生区,灰色阴影为地形)
Fig.9 The spatial distribution of potential pseudo-equivalent temperature (isolines, Unit: K) and frontogenesis function (the color shaded, Unit: 10-9 K·m-1·s-1) at 925 hPa over Chang’an and surrounding areas (a, c, e), the longitude-height sections of the potential pseudo-equivalent temperature (isolines, Unit: K), frontogenesis function (the color shaded, Unit: 10-9 K·m-1·s-1) and wind field (wind vectors, Unit: m·s-1) along the latitude of the precipitation center (b, d, f) at 10:00 on 6 August 2023 (a, b), 19:00 on 12 July 2023 (c, d), 17:00 on 3 August 2022 (e, f)
(The red box represents the frontogenetical area at the northern foot of Qinling Mountains, the gray shaded for terrain)