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DOI | 10.1002/2016JD025757 |
Impacts of coal dust from an active mine on the spectral reflectance of Arctic surface snow in Svalbard, Norway | |
Khan, Alia L.1,2,3; Dierssen, Heidi4; Schwarz, Joshua P.5; Schmitt, Carl6; Chlus, Adam4; Hermanson, Mark7; Painter, Thomas H.8; McKnight, Diane M.1,2 | |
2017-02-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Svalbard |
英文摘要 | Light-absorbing particles (LAPs) in snow such as dust and black carbon influence the radiative forcing at the Earth's surface, which has major implications for global climate models. LAPs also significantly influence the melting of glaciers, sea ice, and seasonal snow. Here we present an in situ study of surface snow near an active coal mine in the Norwegian Arctic. We couple measurements of spectral hemispherical directional reflectance factor (HDRF) with measurements of LAPs characterized in two ways, as refractory black carbon using a Single Particle Soot Photometer and the total light absorption of LAPs measured with the Light Absorption Heating Method. The Snow Ice and Aerosol Radiation model was constrained by LAP measurements. Results were compared to observed spectral albedo measurements. Modeled and observed albedos were similar at the cleaner and more remote sites. However, the modeled spectral albedos do not fully account for the low spectral albedo measured next to the mine. LAP measurements also showed a large variation in particle sizes (tenths to tens of microns) related to transport distance of the particles from the mine. Here we find that LAPs from coal dust reduce the spectral HDRF by up to 84% next to the mine and 55% 0.5 km downwind of the mine. The coupling of extreme LAP observations (1 ng g(-1) to 4863 ng g(-1)) with HDRF measurements from 350 to 2500nm has facilitated the development of spectral band pairs, which could be used in the future to remotely assess LAPs in Arctic snow. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396119200022 |
WOS关键词 | LIGHT-ABSORBING IMPURITIES ; INDUSTRIAL BLACK CARBON ; IMAGING SPECTROSCOPY ; GRAIN-SIZE ; SOOT ; ALBEDO ; ANTARCTICA ; DEPOSITION ; RESOLUTION ; PARTICLES |
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/33121 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Dept Civil & Environm Engn, Boulder, CO 80309 USA; 2.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA; 3.Univ Colorado, Natl Snow & Ice Data Ctr, Boulder, CO 80309 USA; 4.Univ Connecticut, Dept Marine Sci, Storrs, CT USA; 5.NOAA, Earth Syst Res Lab, Boulder, CO USA; 6.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 7.Univ Ctr Svalbard, Dept Arctic Technol, Longyearbyen, Svalbard; 8.CALTECH, Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Khan, Alia L.,Dierssen, Heidi,Schwarz, Joshua P.,et al. Impacts of coal dust from an active mine on the spectral reflectance of Arctic surface snow in Svalbard, Norway[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(3). |
APA | Khan, Alia L..,Dierssen, Heidi.,Schwarz, Joshua P..,Schmitt, Carl.,Chlus, Adam.,...&McKnight, Diane M..(2017).Impacts of coal dust from an active mine on the spectral reflectance of Arctic surface snow in Svalbard, Norway.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(3). |
MLA | Khan, Alia L.,et al."Impacts of coal dust from an active mine on the spectral reflectance of Arctic surface snow in Svalbard, Norway".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.3(2017). |
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