Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2011JD016909 |
Single scattering albedo of fine mineral dust aerosols controlled by iron concentration | |
Moosmueller, Hans1; Engelbrecht, Johann P.1; Skiba, Michal1,2; Frey, Garrett1,3; Chakrabarty, Rajan K.1; Arnott, W. Patrick1,4 | |
通讯作者 | Moosmueller, Hans |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2012 |
卷号 | 117 |
英文摘要 | Sign and magnitude of solar aerosol direct radiative forcing are largely determined by the aerosol single scattering albedo (SSA) and the albedo of the underlying scene (e. g., surface albedo). On a global scale, mineral dust aerosol has the largest mass emission rate, average column mass burden, and average optical depth of all aerosol types. Therefore, better understanding of its optical properties with a focus on SSA is of great importance. Here, we entrain ten bulk soil samples from deserts and semi-arid regions in the Arabian Peninsula, from locations representative of the Sahara and Sahel in North Africa, and from Northeast Africa and South-Central Asia. We segregate the fine particle fraction (aerodynamic diameter < 2.5 mu m) and measure its iron content with an x-ray fluorescence (XRF) spectrometer and its aerosol SSA and absorption, scattering, and extinction Angstrom coefficients for two wavelengths (405 nm and 870 nm) with a photoacoustic instrument with integrating reciprocal nephelometer. Results show that SSA is much lower at 405 nm than at 870 nm and that SSA at both wavelengths is dominated by and linearly correlated with the iron content of the entrained mineral dust. The second result points toward potential use of SSA remote sensing to measure aerosol iron content and vice versa, measurements of iron content with simple filter sampling followed by XRF analysis, providing an assessment of SSA for aerosol radiative forcing calculations and modeling. Average Angstrom coefficients were approximate to 3.2 for absorption, approximate to-0.4 for scattering, and approximate to-0.3 for extinction and showed little correlation with iron content. |
类型 | Article |
语种 | 英语 |
国家 | USA ; Poland |
收录类别 | SCI-E |
WOS记录号 | WOS:000305147900001 |
WOS关键词 | LIGHT-ABSORPTION ; OPTICAL-PROPERTIES ; SIZE DISTRIBUTION ; RADIATION BUDGET ; CALIBRATION ; NEPHELOMETER ; CLIMATOLOGY ; PARTICLES ; TRANSPORT ; SAMPLES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
来源机构 | Desert Research Institute |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/173602 |
作者单位 | 1.Nevada Syst Higher Educ, Desert Res Inst, Reno, NV 89512 USA; 2.Jagiellonian Univ, Inst Geol Sci, Krakow, Poland; 3.Univ Nevada, Dept Geol Sci & Engn, Reno, NV 89557 USA; 4.Univ Nevada, Dept Phys, Reno, NV 89557 USA |
推荐引用方式 GB/T 7714 | Moosmueller, Hans,Engelbrecht, Johann P.,Skiba, Michal,et al. Single scattering albedo of fine mineral dust aerosols controlled by iron concentration[J]. Desert Research Institute,2012,117. |
APA | Moosmueller, Hans,Engelbrecht, Johann P.,Skiba, Michal,Frey, Garrett,Chakrabarty, Rajan K.,&Arnott, W. Patrick.(2012).Single scattering albedo of fine mineral dust aerosols controlled by iron concentration.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,117. |
MLA | Moosmueller, Hans,et al."Single scattering albedo of fine mineral dust aerosols controlled by iron concentration".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 117(2012). |
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