資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://ir.lib.ncu.edu.tw/handle/987654321/108807
|
| 題名: | Radiative effect of springtime biomass-burning aerosols over northern indochina during 7-SEAS/BASELInE 2013 campaign |
| 作者: | 李崇德;Pani, Shantanu Kumar;Wang, Sheng-Hsiang;Lin, Neng-Huei;Lee, Chung-Te;Tsay, Si-Chee;Holben, Brent N.;Janjai, Serm;Hsiao, Ta-Chih;Chuang, Ming-Tung;Chantara, Somporn |
| 貢獻者: | 環境監測技術聯合中心 |
| 關鍵詞: | Earth Resources And Remote Sensing |
| 日期: | 2016-11-01 |
| 上傳時間: | 2026-04-23 15:07:25 (UTC+8) |
| 出版者: | AAGR Aerosol and Air Quality Research;Goddard Space Flight Center: Taiwan Association for Aerosol Research (TAAR) |
| 摘要: | 摘要： The direct aerosol radiative effects of biomass-burning (BB) aerosols over northern Indochina were estimated by using aerosol properties (physical, chemical, and optical) along with the vertical profile measurements from ground-based measurements with integration of an optical and a radiative transfer model during the Seven South East Asian Studies Biomass-Burning Aerosols Stratocumulus Environment: Lifecycles Interactions Experiment (7-SEASBASELInE) conducted in spring 2013. Cluster analysis of backward trajectories showed the air masses arriving at mountainous background site (Doi Ang Khang; 19.93degN, 99.05degE, 1536 m above mean sea level) in northern Indochina, mainly from near-source inland BB activities and being confined in the planetary boundary layer. The PM(sub10) and black carbon (BC)mass were 87 +/- 28 and 7 +/- 2 micrograms m(exp -3), respectively. The aerosol optical depth (AOD (sub 500) was found to be 0.26--1.13 (0.71 +/- 0.24). Finer (fine mode fraction is approximately or equal to 0.95, angstrom-exponent at 440-870 nm is approximately or equal to 1.77) and significantly absorbing aerosols(single scattering albedo is approximately or equal to 0.89, asymmetry-parameter is approximately or equal to 0.67, and absorption AOD 0.1 at 440 nm) dominated over this region. BB aerosols (water soluble and BC) were the main contributor to the aerosol radiative forcing (ARF), while others (water insoluble, sea salt and mineral dust) were negligible mainly due to their low extinction efficiency. BC contributed only 6 to the surface aerosol mass but its contribution to AOD was 12 (2 times higher). The overall mean ARF was 8.0 and -31.4 W m(exp -2) at top-of-atmosphere (TOA) and at the surface (SFC), respectively. Likely, ARF due to BC was +10.7 and -18.1 W m(exp -2) at TOA and SFC, respectively. BC imposed the heating rate of +1.4 K d(exp -1) within the atmosphere and highlighting its pivotal role in modifying the radiation budget. We propose that to upgrade our knowledge on BB aerosol radiative effects in BB source region, the long-term and extensive field measurements are needed.
其他題名： Aerosol Air Qual. Res
出版者： Goddard Space Flight Center: Taiwan Association for Aerosol Research (TAAR)
出版日期： 2016-11-01
出處： Aerosol and air quality research, 2016-11, Vol.16 (11), p.2802-2817
資源來源： NASA Technical Reports Server
版權： Taiwan Association for Aerosol Research 2016
識別號： ISSN: 1680-8584
識別號： ISSN: 2071-1409
識別號： EISSN: 2071-1409
識別號： DOI: 10.4209/aaqr.2016.03.0130 |
| 顯示於類別: | [環境監測技術聯合中心] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 50 | 檢視/開啟 |
|
在NCUIR中所有的資料項目都受到原著作權保護.
|
