Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 9871192 |
| Development of Instrumentation to Measure Atmospheric Light Extinction and its Scattering and Absorption Components | |
| Hans Moosmuller | |
| 主持机构 | Nevada System of Higher Education, Desert Research Institute |
| 开始日期 | 1998-08-15 |
| 结束日期 | 2002-07-31 |
| 资助经费 | 442765(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 | MAJOR RESEARCH INSTRUMENTATION, EPSCoR Co-Funding |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | In the shortwave optical regions, lack of adequate instrumentation hinders scientific progress across a variety of research areas. The local measurement of light extinction, scattering and absorption in the atmosphere has applications to a number of scientific problems related to: 1. Aerosol radiative forcing and its influence on climate change. 2. Optical remote sensing using either active or passive systems. 3. Atmospheric visibility as needed for regional air quality studies. The Principal Investigators will develop instrumentation capable of measuring total atmospheric light extinction and its scattering and absorption components. The system to be developed includes three specific instruments: (1) An extinction instrument which folds several tens of kilometers of optical path into a one-meter length optical cavity and determines extinction by measuring the exponential decay of the optical power contained in the cavity. (2) A novel scattering instrument concept based on the inverse nephelometer concept which collects virtually all scattered light including the forward scattering from large particles. (3) A light absorption instrument which yields a real time in situ measurement of optical light absorption by utilizing resonant photoacoustic detection of light absorption. The use of an all-solid-state laser makes this instrument much more compact and less power hungry than its predecessors. Innovative acoustic design makes this instrument more than an order of magnitude more sensitive than previous designs. The proposed development of these instruments will result in an instrument cluster which will be far more useful than the three individual instruments used separately. For example, the combination of absorption and scattering measurements can determine the single-scattering aerosol albedo. Addition of the extinction instrument will result in experimental closure on the problem of atmospheric light extinction and its scattering and absorption components. This closure is extremely important for quality assurance purposes, i.e., measurement accuracy can directly be assessed by checking if the sum of measured absorption and scattering extinction equals the measured extinction. |
| 来源学科分类 | Geosciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=9871192 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/342163 |
| 推荐引用方式 GB/T 7714 | Hans Moosmuller.Development of Instrumentation to Measure Atmospheric Light Extinction and its Scattering and Absorption Components.1998. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Hans Moosmuller]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Hans Moosmuller]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Hans Moosmuller]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
