中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/27246
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 78728/78728 (100%)
造访人次 : 33566781      在线人数 : 584
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/27246


    题名: Effects of local pollution and environmental humidity on aerosol-size spectra and light-scattering coefficients in southern Taiwan
    作者: Lee,CT;Hsu,WC
    贡献者: 環境工程研究所
    关键词: RELATIVE-HUMIDITY
    日期: 1999
    上传时间: 2010-06-29 18:21:08 (UTC+8)
    出版者: 中央大學
    摘要: Atmospheric aerosols were intensively studied in Tainan in southern Taiwan from February to March 1995. The time-series data showed that variations of hourly aerosol light-scattering coefficients (sigma(scat)) and aerosol volume concentrations were consistent with a squared correlation coefficient at 0.87. For comparisons with the measured sigma(scat), the aerosol light-scattering coefficient was calculated (sigma(scat, c)) using the Mie theory and aerosol size spectra. A linear regression analysis showed that the squared correlation coefficient between sigma(scat, c) and sigma(scat) was at 0.89. During the study period, certain events were observed which might result from variations of either meteorology or source emissions. The morning fog was found to have the most progressive growth in the range of 0.8 to 0.9 mu m, with a minor contribution from a size interval of 1 to 2 mu m. In contrast, other activities showed the most progressive size interval was from 0.35 to 0.6 mu m. In this study, two cases affected predominantly by the variations in relative humidity (RH) were chosen to investigate the sigma(scat, c) across aerosol sizes. In an ascending RH environment, the sigma(scat) increased from 0.35 to 0.50 km(-1) with an increasing sigma(scat, c) in the range from 0.2 to 0.9 mu m. For a descending RH environment, the sigma(scat) reduced from 0.75 to 0.14 km(-1) with a significant reduction in sigma(scat, c) for the range from 0.45 to 2.0 mu m. (C) 1999 Elsevier Science Ltd.
    關聯: ENVIRONMENT INTERNATIONAL
    显示于类别:[環境工程研究所 ] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML506检视/开启


    在NCUIR中所有的数据项都受到原著作权保护.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明