Page 74 - 《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 1167
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图4 贺兰山东麓不同量级暴雨过程期间的平均200 hPa高空急流(风速≥36 m·s ,蓝色实线,单位:m·s )、风场(矢量,
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单位:m·s )和散度(彩色区,单位:×10 s )(a~c),500 hPa比湿(绿色实线,单位:g·kg )、风场(矢量,单位:m·s )
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和涡度(彩色区,单位:×10 s )(d~f),以及700 hPa(g~i)和850 hPa(j~l)低空急流(蓝色实线,单位:m·s )、
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比湿(绿色实线,单位:g·kg )、风场(矢量,单位:m·s )和涡度(彩色区,单位:×10 s )
灰色阴影为青藏高原
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Fig. 4 The average 200 hPa high-level jet(wind speed≥ 36 m·s ,blue solid line,unit:m·s ),wind field(vector,unit:m·s )
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and divergence(color area,unit:×10 s )(a~c),500 hPa specific humidity(green solid line,unit:g·kg ),wind field(vector,
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unit:m·s )and vorticity(color area,unit:×10 s )(d~f),700 hPa(g~i)and 850 hPa(j~l)low-level jet(blue solid line,
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unit:m·s ),specific humidity(green solid line,unit:g·kg ),wind field(vector,unit:m·s )and vorticity(color area,
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unit:×10 s )for different grades of rainstorm processes in the eastern foot of the Helan Mountain.
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The gray shadow denotes the Qinghai-Xizang Plateau