Experimental investigations were conducted to uncover the impact of cavitation control—through the use of biomimetic riblets on cavitating flows around a circular cylinder. First, the dynamics of cavitation in the flow behind a finite cylinder (without riblets) was unveiled by visualizing the cavitation clouds and measuring the lift force fluctuations acting on the cylinder. Second, in a significant step forward, a comprehensi...

The long‐term trend in tropopause has profound implications for the expansion of tropical zone and the variation of large‐scale circulation. However, the changes of tropopause in China have not been explicitly investigated as yet. In this study, the trend of lapse rate tropopause (LRT) height over China has been comprehensively revisited for the period of 1979–2016, using the newly released quality‐controlled radiosonde data f...

Based on 55 years (from 1961 to 2015) of ground‐based hailstorm and atmospheric sounding observations, the climatological characteristics of hailstorms in China, along with potential influencing factors, were analysed. We found that hailstorms exhibit large spatial and temporal variability, with the peak occurring in spring in south China, and in summer in north China. The Tibetan Plateau (TTP) is a region with high hailstorm...