Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.07.019 |
Aerosol optical properties at rural background area in Western Saudi Arabia | |
Lihavainen, H.1; Alghamdi, M. A.2; Hyvarinen, A.1; Hussein, T.3; Neitola, K.1; Khoder, M.2; Abdelmaksoud, A. S.2; Al-Jeelani, H.2; Shabbaj, I. I.2; Almehmadi, F. M.2 | |
2017-11-15 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 197 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland; Saudi Arabia |
英文摘要 | To derive the comprehensive aerosol in situ characteristics at a rural background area in Saudi Arabia, an aerosol measurements station was established to Hada Al Sham, 60 km east from the Red Sea and the city of Jeddah. The present sturdy describes the observational data from February 2013 to February 2015 of scattering and absorption coefficients, Angstrom exponents and single scattering albedo over the measurement period. The average scattering and absorption coefficients at wavelength 525 nm were 109 +/- 71 Min(-1) (mean +/- SD, at STP conditions) and 15 +/- 17 Mm(-1) (at STP conditions), respectively. As expected, the scattering coefficient was dominated by large desert dust particles with low Angstrom scattering exponent, 0.49 +/- 0.62. Especially from February to June the Angstrom scattering exponent was clearly lower (0.23) and scattering coefficients higher (124 Mm(-1)) than total averages because of the dust outbreak season. Aerosol optical properties had clear diurnal cycle. The lowest scattering and absorption coefficients and aerosol optical depths were observed around noon. The observed diurnal variation is caused by wind direction and speed, during night time very calm easterly winds are dominating whereas during daytime the stronger westerly winds are dominating (sea breeze). Positive Matrix Factorization mathematical tool was applied to the scattering and absorption coefficients and PM2.5 and coarse mode (PM10-PM2.5) mass concentrations to identify source characteristics. Three different factors with clearly different properties were found; anthropogenic, BC source and desert dust. Mass absorption efficiencies for BC source and desert dust factors were, 6.0 m(2) g(-1) and 0.4 m(2) g(-1), respectively, and mass scattering efficiencies for anthropogenic (sulphate) and desert dust, 2.5 m(2) g(-1) and 0.8 m(2) g(-1), respectively. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412250700030 |
WOS关键词 | POSITIVE MATRIX FACTORIZATION ; LIGHT-ABSORPTION ; SOURCE APPORTIONMENT ; BLACK CARBON ; AMBIENT AEROSOL ; ORGANIC-CARBON ; DESERT DUST ; PARTICLES ; BROWN ; SOOT |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38137 |
专题 | 地球科学 |
作者单位 | 1.Finnish Meteorol Inst, Helsinki, Finland; 2.King Abdulaziz Univ, Dept Environm Sci, Fac Meteorol Environm & Arid Land Agr, POB 80208, Jeddah 21589, Saudi Arabia; 3.Univ Helsinki, Dept Phys, Helsinki, Finland |
推荐引用方式 GB/T 7714 | Lihavainen, H.,Alghamdi, M. A.,Hyvarinen, A.,et al. Aerosol optical properties at rural background area in Western Saudi Arabia[J]. ATMOSPHERIC RESEARCH,2017,197. |
APA | Lihavainen, H..,Alghamdi, M. A..,Hyvarinen, A..,Hussein, T..,Neitola, K..,...&Almehmadi, F. M..(2017).Aerosol optical properties at rural background area in Western Saudi Arabia.ATMOSPHERIC RESEARCH,197. |
MLA | Lihavainen, H.,et al."Aerosol optical properties at rural background area in Western Saudi Arabia".ATMOSPHERIC RESEARCH 197(2017). |
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