International Workshop on Comparing Ice Nucleation Measuring Systems 2014 (ICIS 2014) #3

2014 年冰核测量系统比较国际研讨会 (ICIS 2014)

• 批准号: 1461347
• 负责人: Daniel Cziczo
• 金额: $ 19.4万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-03-15 至 2017-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1461347&HistoricalAwards=false
• 关键词: International; Workshop; Comparing; Ice; Nucleation

This project is the second part of a three-part workshop to improve scientific knowledge related to developing a better understanding of the atmospheric formation of ice particles. This workshop will take place at Aerosol Interaction and Dynamics in the Atmosphere (AIDA) at the Karlsruhe Institute of Technology, the world's foremost facility for producing ice clouds in a controlled setting. There is currently a poor understanding of the composition and concentration of ice-nucleating particles in the atmosphere and of the relationship between ice particles and clouds. This workshop will address the measurement of ice nucleating particle number density by co-locating and comparing different instruments making these measurements. Because ice nucleation largely controls precipitation, this work could provide major benefits for society by enabling better predictions of rain and snowfall.Part 1 of the workshop took place in November 2014 at AIDA where several instruments that measure particle composition were tested and compared with each other in the laboratory. Part 3 will take place at the Desert Research Institute's Storm Peak Laboratory, a high elevation site not subject to local emissions, where measurements from ice-nucleating instruments will be compared at a field site. The workshop focuses on: (1) the microphysics of how particles nucleate ice, (2) the number of ice forming particle as a function of atmospheric properties such as temperature and relative humidity, (3) the atmospheric distribution of ice forming particles and (4) the role of anthropogenic activities in producing or changing the behavior of ice forming particles. The project could provide a breakthrough in ice-nucleating particle measurement technology and in the understanding of ice-nucleating processes.

该项目是一个由三部分组成的讲习班的第二部分，该讲习班旨在增进与更好地了解大气中冰粒形成有关的科学知识。该研讨会将在卡尔斯鲁厄理工学院的大气气溶胶相互作用和动力学（AIDA）举行，该学院是世界上最重要的在受控环境中生产冰云的设施。目前对大气中冰核粒子的组成和浓度以及冰粒子和云之间的关系了解甚少。本次研讨会将讨论通过共同定位和比较不同的仪器进行这些测量的冰成核粒子数密度的测量。由于冰成核在很大程度上控制着降水，这项工作可以通过更好地预测降雨和降雪来为社会提供重大利益。研讨会的第一部分于2014年11月在AIDA举行，在实验室中测试并比较了几种测量颗粒成分的仪器。第三部分将在沙漠研究所的风暴峰实验室进行，这是一个不受当地排放影响的高海拔地点，将在现场比较冰核仪器的测量结果。讲习班的重点是：（1）粒子如何成核成冰的微观物理学，（2）作为诸如温度和相对湿度的大气特性的函数的成冰粒子的数量，（3）成冰粒子的大气分布，以及（4）人类活动在产生或改变成冰粒子的行为中的作用。该项目可以在冰成核颗粒测量技术和理解冰成核过程方面取得突破。