热带气旋发展增强过程中龙卷尺度涡旋活动特征

周玥滢, 方娟

Characteristics of tornado⁃scale vortices in an intensifying tropical cyclone

Yueying Zhou, Juan Fang

图6 30日18时至31日09时（a，d，g，j）方位角平均切向风（阴影，单位：m·s-1）和径向风（等值线，间隔1.0 m·s-1）；（b，e，h，k）方位角平均雷达回波（阴影，单位：dBZ）和垂直速度（等值线，间隔0.5 m·s-1）；（c，f，i，l）方位角平均相对涡度（阴影，单位：s-1）和相当位温（等值线，间隔1 K）；紫色空心圆代表识别出的TSV，灰色实线代表最大风速半径

Fig.6 (a, d, g, j) azimuthally averaged tangential winds (shaded， unit: m·s?1) and radial winds (contours， 1.0 m·s?1 interval) from 18:00 on the 30th to 09:00 on the 31st; (b, e, h)，and (k) azimuthally averaged radar echoes (shaded，unit: dBZ) and vertical velocity ( contours at 0.5 m·s-1 intervals); (c, f, i)，and (l) azimuthally averaged relative vorticity (shaded， unit: s-1) and comparable potential temperature (contours at 1 K intervals); and purple hollow circles represent identified TSVs