Page 78 - 《高原气象》2022年第5期
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5 期 陈豫英等:贺兰山东麓不同量级暴雨过程的环流特征和概念模型 1171
图6 贺兰山东麓不同量级暴雨过程的天气学概念模型
为水平流场,G和D为高低压中心,彩色区颜色越深,强度越大;(a~c)中 为200 hPa位势高度(单位:dagpm), 为散度
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(单位:×10 s ),彩色区为高空急流;(d~l)中 为500 hPa位势高度(单位:dagpm), 为涡度(单位:×10 s ), 为比湿
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(单位:g·kg ), 为槽线或切变线,彩色区为低空急流;(m~o)中 为海平面气压(单位:hPa), 为冷锋,
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为K指数(单位:℃), 为CAPE(单位:g·kg ),红点为暴雨中心,彩色区为暴雨区
Fig. 6 The synoptic conceptual model of different grades of rainstorm processes in the eastern foot of the Helan Mountain. is the
horizontal airflow. The letters G and D denote the high pressure center and low pressure center,respectively. The deeper color area,
the more intense the key physical parameters. In Fig. 6(a)~(c), is the geopotential height of 200 hPa(unit:dagpm), is diver‐
gence(unit:×10 s ),the color area denotes the high -level jet area;In Fig. 6(d)~(l), is the geopotential height of 500hPa
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(unit:dagpm), is vorticity(×10 s ), is specific humidity(unit:g·kg ), is the trough line or shear line,the color area
denotes the low -level jet area;In Fig. 6(m)~(o), is the sea level pressure(unit:hPa), is the cold front, is K index
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(unit:℃), is CAPE(unit:g·kg ),the red dot denotes the rainstorm center,the color area is the rainstorm area