Chemical and Physical Characteristics of Submicrometric Aerosol Particles in the Arctic

北极亚微米气溶胶颗粒的化学和物理特征

• 批准号: 8822192
• 负责人: David Covert
• 金额: $ 4.86万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-03-01 至 1990-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8822192&HistoricalAwards=false
• 关键词: Chemical; Physical; Characteristics; Submicrometric; Aerosol

This project is a study of the physics and chemistry of sub-micrometric aerosol particles that are transported into the arctic by the synoptic- scale atmospheric circulation and form a component of the layered pollution structure that has become generally known as Arctic Haze. Sub-micrometric particles lie in the size range from 0.01 to 1 micrometer and are advected into the arctic from sub-arctic and mid- latitude industrial regions, and formed locally by a gas to particle conversion process. Measurements of their size distribution, concentration, and composition will improve our understanding of their sources and formation processes, while the chemical parameters will determine the effectiveness of the particles as cloud condensation nuclei and allow estimates of their lifetimes and their removal mechanism in arctic air masses.

本项目是一个亚微米的物理和化学研究 气溶胶颗粒通过天气系统被输送到北极， 规模大气环流和形成一个组成部分的分层 被称为北极霾的污染结构。 亚微米颗粒的尺寸范围为0.01至1 微米，并平流进入北极从亚北极和中， 纬度工业区，并形成了局部由气体到颗粒 转换过程。 测量它们的大小分布， 浓度和组成将提高我们对他们的理解 来源和形成过程，而化学参数将 确定粒子作为云凝结的有效性 核，并允许估计它们的寿命和它们的去除 北极气团的机制。