中国北方2021年3月中旬持续性沙尘天气的特征及其成因

杨晓军, 张强, 叶培龙, 秦豪君, 徐丽丽, 马莉, 巩崇水

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7 银川、中卫、兰州3站垂直螺旋度时间变化

Fig.7 The time changes of vertical helicity at the three stations of Yinchuan, Zhongwei and Lanzhou