Instrumentation to Measure the Emission and Transport of Biological Aerosols into the Atmosphere: Linking Across Scales from Microns to Kilometers

测量生物气溶胶向大气中的排放和传输的仪器：从微米到公里的跨尺度连接

• 批准号: 0119903
• 负责人: Grace Brush
• 金额: $ 249.87万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0119903&HistoricalAwards=false
• 关键词: Instrumentation; Measure; Emission; Transport; Biological

0119903ParlangeThe objective of the proposed research is to focus on the measurement of the emission and transport of biological aerosols (focusing on pollens) in the atmosphere. Several instruments that cover the size range of microns for the particles themselves to particulate dispersal over many kilometers will be developed. The behavior of individual pollen particles and the emission of pollen from the plant will be observed and modeled. At the larger scales, particulate dispersal will be studied in a wind tunnel and in field studies, and the experimental results will be used to refine large eddy simulation models. The field studies will be carried out at four sites in the Chesapeake Bay region. Pollen transport is of interest because of species cross-fertilization and genetic diversity concerns that have arisen due to human disruption of the natural landscape, as well as concerns about transport distances of genetically altered pollens.

0119903ParlangeThe拟议的研究的目标是集中在大气中的生物气溶胶（侧重于花粉）的排放和传输的测量。 将开发几种仪器，覆盖颗粒本身的微米尺寸范围，以使颗粒扩散到许多公里之外。 单个花粉颗粒的行为和花粉从植物的排放将被观察和建模。 在更大的尺度上，将在风洞和实地研究中研究微粒的扩散，实验结果将用于改进大涡流模拟模型。 实地研究将在切萨皮克湾地区的四个地点进行。 花粉运输是感兴趣的，因为物种异花受精和遗传多样性的问题，已经出现了由于人类破坏自然景观，以及对遗传改变花粉的运输距离的关注。