Influence of the Atmospheric Aerosol on Snowfall Scavenging Efficiencies and Precipitation Rates
大气气溶胶对降雪清除效率和降水率的影响
基本信息
- 批准号:8921981
- 负责人:
- 金额:$ 10.14万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:1990
- 资助国家:美国
- 起止时间:1990-05-01 至 1991-10-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Studies of aerosol scavenging and precipitation rates and efficiencies in snowing clouds at a mountaintop site in northwestern Colorado will continue. In-cloud measurements of aerosol particles, cloud droplets and ice particles as a function of size, and cloud condensation nuclei (CCN) spectra previously made will be analyzed to determine the distribution of chemical species among the three water components of a precipitating cloud: ice, water and vapor. From these measurements, the effect of varying populations of natural and anthropogenic aerosol particles on aerosol particle scavenging and precipitation processes will be assessed. Variations in the cloud droplet size distribution as a result of changes in the dominant atmospheric aerosol CCN particle source (natural versus anthropogenic)will be related to the two primary ice particle growth processes: accretion of droplets versus diffusion of water vapor. These variations in the in-cloud aerosol and water mass removal mechanisms and rates will be used to determine how changes in atmospheric aerosol concentrations effect cloud microstructure, pollutant scavenging and snowfall rates.
在科罗拉多州西北部的一个山顶地点,对气溶胶清除、降水率和效率的研究将继续进行。将分析云中气溶胶粒子、云滴和冰粒作为大小函数的测量结果,以及先前制作的云凝结核(CCN)光谱,以确定降水云的三种水成分(冰、水和蒸汽)中化学物质的分布。根据这些测量,将评估不同数量的自然和人为气溶胶颗粒对气溶胶颗粒清除和降水过程的影响。由于主要大气气溶胶CCN颗粒源(自然与人为)的变化,云滴大小分布的变化将与两个主要的冰粒生长过程有关:液滴的增加与水蒸气的扩散。云内气溶胶和水团去除机制和速率的这些变化将用于确定大气气溶胶浓度的变化如何影响云微观结构、污染物清除和降雪率。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Randolph Borys其他文献
Randolph Borys的其他文献
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{{ truncateString('Randolph Borys', 18)}}的其他基金
Collaborative Research: Inhibition of Snowfall by Pollution Aerosols
合作研究:污染气溶胶抑制降雪
- 批准号:
0451374 - 财政年份:2005
- 资助金额:
$ 10.14万 - 项目类别:
Continuing Grant
Acquisition of New Instrumentation for Atmospheric Aerosol Research at Storm Peak Laboratory
风暴峰实验室购置用于大气气溶胶研究的新仪器
- 批准号:
0079486 - 财政年份:2000
- 资助金额:
$ 10.14万 - 项目类别:
Standard Grant
Snowfall Rate Reduction by Pollution Aerosols
污染气溶胶降低降雪率
- 批准号:
0004265 - 财政年份:2000
- 资助金额:
$ 10.14万 - 项目类别:
Continuing Grant
Collaborative Research: Tethered Balloon Measurements of Cloud-Radiation-Sea Ice Interactions at the SHEBA Ice Camp: An Integrated Experimental and Modeling Study
合作研究:SHEBA 冰营的云-辐射-海冰相互作用的系留气球测量:综合实验和建模研究
- 批准号:
9703565 - 财政年份:1997
- 资助金额:
$ 10.14万 - 项目类别:
Continuing Grant
A Tethered Balloon Cloud Microphysical and Chemical Sounding System
系留气球云微物理和化学探测系统
- 批准号:
9504551 - 财政年份:1995
- 资助金额:
$ 10.14万 - 项目类别:
Continuing Grant
An Assessment of the Role of Natural and Anthropogenic CCN on Droplet Size Distributions in Marie Stratus in the North Atlantic
自然和人为 CCN 对北大西洋玛丽层云液滴尺寸分布的作用评估
- 批准号:
9408660 - 财政年份:1994
- 资助金额:
$ 10.14万 - 项目类别:
Standard Grant
Assessment of Ice Particle Growth and Scavenging Processes at Summit, Greenland
格陵兰峰会冰粒生长和清除过程的评估
- 批准号:
8922049 - 财政年份:1990
- 资助金额:
$ 10.14万 - 项目类别:
Standard Grant
Studies of Aerosol Scavenging by Ice Particles in Clouds
云中冰粒清除气溶胶的研究
- 批准号:
8715060 - 财政年份:1987
- 资助金额:
$ 10.14万 - 项目类别:
Continuing Grant
The Chemical Composition of Snowfalls and Snowpacks: the Contribution of Rime and Hoar
降雪和积雪的化学成分:雾凇和白霜的贡献
- 批准号:
8318846 - 财政年份:1984
- 资助金额:
$ 10.14万 - 项目类别:
Standard Grant
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