Laboratory Studies of Ice Phase Microphysics

冰相微物理的实验室研究

• 批准号: 9112888
• 负责人: Norihiko Fukuta
• 金额: $ 63.92万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112888&HistoricalAwards=false
• 关键词: Laboratory; Studies; Ice; Phase; Microphysics

The objectives of this research are three-fold: (1) an experimental investigation of "cirrus" crystal growth during free-fall in an evacuated chamber; the growth of natural crystals by both diffusion of vapor and riming, particularly the transition from the former to the latter as the temperature is decreased; (2) an experimental investigation, using a thermal diffusion chamber of natural ice nuclei, especially their capacity to nucleate ice as a function of supersaturation; (3) the development of a theory to explain ice crystal growth, including habitat (i.e. crystal shape).

这项研究的目的有三个方面：(1)在真空腔中自由落体过程中的“卷云”晶体生长的实验研究，自然晶体的生长是通过水蒸气的扩散和边缘，特别是随着温度的降低从前者向后者的转变；(2)利用天然冰核的热扩散室进行实验研究，特别是它们作为过饱和度函数成核冰的能力；(3)发展一种解释冰晶体生长的理论，包括栖息地(即晶体形状)。