Water-soluble ions in hailstones in northern and southwestern China

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2018,（18）
• 页码范围: 1177-1179
• 页数: 3页
• 语种: 英文

摘要

Natural hailstones were collected and analyzed in the laboratory not only for their physical properties (e.g.,structure,density,shape,and air bubbles),but also for their chemical properties (e.g.,organic particles,biological particles,and water-soluble ions),which can help a clear understanding on microphysics and development of hailstorms [1-4].Aerosol particles were carried up from the atmospheric boundary layer to the free atmosphere into the cloud base by updrafts,and could be scavenged into cloud water droplets and ice particles to act as cloud condensation nuclei (CCN) and ice nuclei (IN) [5],further affecting hailstones formation.Interactions between aerosols and hailstones have been studied usually by models [6],because it is difficult to study the processes involved in this interaction in deep convective storms using instruments in the laboratory [7].Water-soluble particles,which can initiate the liquid phase much more effectively than insoluble particles can,have been less well studied in hailstones [4].This is particularly true in comparison with the number of studies undertaken to determine the levels of surface pollution.Understanding the role of these water-soluble matters in hailstorm is of great significance but remains a lack of evidence that what kind of particles could be scavenged by hailstone,including nucleation scavenging and impaction scavenging [4,5,7].