A Study of Microphysical Processes Associated with the Atmospheric Removal of Moisture and Trace Chemicals by Precipitating Clouds

与降水云去除大气中的水分和微量化学物质相关的微物理过程的研究

• 批准号: 8716166
• 负责人: Dennis Lamb
• 金额: $ 18.68万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-01-01 至 1990-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8716166&HistoricalAwards=false
• 关键词: Study; Microphysical; Processes; Associated; Atmospheric

In regions of copious precipitation, the wet deposition is the primary mechanism in removing trace gas constituents and aerosol particles from the atmosphere. Most of the world's precipitation falls to the ground as rain, although the clouds themselves frequently have temperatures below freezing. The ice crystals play an important role in the cloud development; however, their role in scavenging is not well known. Under this research project, Professor Lamb will conduct laboratory experiments on the adsorption of gas on the surface of ice crystals, the entrapment of gases in rime ice, and the inhibition of secondary ice splinter production by ammonium. The results should give us a better understanding of the interaction between ice crystals and chemical species in clouds, and thereby improve the modeling of scavenging in cloud models.

在降水丰富的地区， 是去除痕量气体成分的主要机制 和大气中的气溶胶颗粒。 大部分 世界上的降水福尔斯以雨的形式落到地面， 云层本身的温度经常低于 冻死了 冰晶在地球上扮演着重要的角色。 云的发展;然而，它们在清除中的作用不是 众所周知。 在这个研究项目中，兰姆教授 将在实验室进行气体吸附实验 在冰晶表面，气体被困在其中 雾凇冰和抑制二次冰分裂 生产铵。 结果应该会给我们一个更好的 了解冰晶之间的相互作用 云中的化学物质，从而改善建模 在云模型中进行清理。