秦岭及周边地区夏季极端降水环流特征及成因分析
井宇, 陈闯, 赵强, 李明, 何娟

Circulation characteristics and causal analysis of extreme summer precipitation over the Qinling Mountains and surrounding regions
JING Yu, CHEN Chuang, ZHAO Qiang, LI Ming, HE Juan
图4 秦岭北部3类RHEP环流型200 hPa位势高度场(等值线,单位:dagpm)、散度场(填色,单位:10-6 s-1)和风场(风矢,单位:m·s-1)(a、b、c),500 hPa位势高度场(黑色等值线,单位:dagpm)、温度场(红色等值线,单位:℃)、风场(风矢,单位:m·s-1)和RHEP发生频次空间分布(彩色圆点,单位:次)(d、e、f),700 hPa位势高度场(等值线,单位:dagpm)、近地面至500 hPa垂直积分水汽通量散度(填色,单位:10-5 kg·m-2·s-1)和风场(风矢,单位:m·s-1)(g、h、i),850 hPa位势高度场(等值线,单位:dagpm)、近地面至500 hPa垂直积分水汽通量(填色,单位:kg·m-1·s-1)和风场(风矢,单位:m·s-1)(j、k、l)
(★为RHEP发生频次最大值位置,灰色阴影为地形,黑色框为秦岭北部边界)
Fig.4 Synoptic patterns of three RHEP circulation types in the study area north of the Qinling Mountains: 200 hPa geopotential height field (contours, Unit: dagpm), divergence field (the color shaded, Unit: 10-6 s-1) and wind field (vectors, Unit: m·s-1) (a、b、c); 500 hPa geopotential height field (black contours, Unit: dagpm), temperature field (red isolines, Unit: ℃), and wind field (vectors, Unit: m·s-1), along with spatial distribution of the RHEP occurrence frequency (colour dots, Unit: times) (d、e、f); 700 hPa geopotential height field (contours, Unit: dagpm), vertically integrated water vapor flux divergence from the near-surface to 500 hPa (the color shaded, Unit: 10-5 kg·m-2·s-1), and wind field (vectors, Unit: m·s-1) (g、h、i); 850 hPa geopotential height field (contours, Unit: dagpm), vertically integrated water vapor flux from the near-surface to 500 hPa (the color shaded, Unit: kg·m-1·s-1), and wind field (vectors, Unit: m·s-1) (j、k、l)
(★ denotes the location with the highest frequency of RHEP occurrence, the gray shaded denotes topography, the black frame denotes the boundary of the study area north of the Qinling Mountains)