中国北方20213月中旬持续性沙尘天气的特征及其成因
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Characteristics and causes of persistent sand-dust weather in mid-March 2021 over Northern China
Xiaojun Yang, Qiang Zhang, Peilong Ye, Haojun Qin, Lili Xu, Li Ma, Chongshui Gong
图8 36°—50°N在104°E的垂直螺旋度时间变化
Fig.8 The time change of vertical helicityfrom 36°N to 50°N at 104°E