Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 8922049 |
| Assessment of Ice Particle Growth and Scavenging Processes at Summit, Greenland | |
| Randolph Borys | |
| 主持机构 | Nevada System of Higher Education, Desert Research Institute |
| 开始日期 | 1990-04-01 |
| 结束日期 | 1991-09-30 |
| 资助经费 | 29499(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 项目所属计划 | ARCTIC NATURAL SCIENCES |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | This project will make observations of cloud droplets and snow crystal replicas at the GISP-II coring site in Greenland in order to assess the importance of ice particle riming on chemical wet deposition and aerosol scavenging at the Summit site during the summer of 1990. Aerosol scavenging is a complex process which takes different forms within clouds and below coulds, and also depends strongly on the cloud droplet distribution spectrum, focusses on the collision efficiencies between ice particles and cloud droplets (the riming process), and the subsquent scavenging efficiencies and precipitation rates. Atmospheric aerosol particles scavenged by ice crystal growth form a part of the chemical record preserved in the Greenland ice sheet, and form a time series in the observations in an ice core. This record has historically been interpreted as a representation of the composition of the atmosphere at the time of deposition, and a variation of the particle content along the core has been interpeted as a corresponding variation in the composition of the atmosphere. The assumption that a one-to-one relationship exists, or even that it is linear, is not well established at this time. This project will help establish a firmer basis for these relationships. |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922049 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/343001 |
| 推荐引用方式 GB/T 7714 | Randolph Borys.Assessment of Ice Particle Growth and Scavenging Processes at Summit, Greenland.1990. |
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