Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-11599-2018 |
Seasonality of aerosol optical properties in the Arctic | |
Schmeisser, Lauren1,3,9; Backman, John2; Ogren, John A.1,3; Andrews, Elisabeth1; Asmi, Eija2; Starkweather, Sandra1,3; Uttal, Taneil3; Fiebig, Markus4; Sharma, Sangeeta5; Eleftheriadis, Kostas6; Vratolis, Stergios6; Bergin, Michael7; Tunved, Peter8; Jefferson, Anne1 | |
2018-08-16 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:16页码:11599-11622 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Finland; Norway; Canada; Greece; Sweden |
英文摘要 | Given the sensitivity of the Arctic climate to short-lived climate forcers, long-term in situ surface measurements of aerosol parameters are useful in gaining insight into the magnitude and variability of these climate forcings. Seasonality of aerosol optical properties - including the aerosol light-scattering coefficient, absorption coefficient, single-scattering albedo, scattering Angstrom exponent, and asymmetry parameter - are presented for six monitoring sites throughout the Arctic: Alert, Canada; Barrow, USA; Pallas, Finland; Summit, Greenland; Tiksi, Russia; and Zeppelin Mountain, Ny-Alesund, Svalbard, Norway. Results show annual variability in all parameters, though the seasonality of each aerosol optical property varies from site to site. There is a large diversity in magnitude and variability of scattering coefficient at all sites, reflecting differences in aerosol source, transport, and removal at different locations throughout the Arctic. Of the Arctic sites, the highest annual mean scattering coefficient is measured at Tiksi (12.47 Mm(-1)), and the lowest annual mean scattering coefficient is measured at Summit (1.74 Mm(-1)). At most sites, aerosol absorption peaks in the winter and spring, and has a minimum throughout the Arctic in the summer, indicative of the Arctic haze phenomenon; however, nuanced variations in seasonalities suggest that this phenomenon is not identically observed in all regions of the Arctic. The highest annual mean absorption coefficient is measured at Pallas (0.48 Mm(-1)), and Summit has the lowest annual mean absorption coefficient (0.12 Mm(-1)). At the Arctic monitoring stations analyzed here, mean annual single-scattering albedo ranges from 0.909 (at Pallas) to 0.960 (at Barrow), the mean annual scattering Angstrom exponent ranges from 1.04 (at Barrow) to 1.80 (at Summit), and the mean asymmetry parameter ranges from 0.57 (at Alert) to 0.75 (at Summit). Systematic variability of aerosol optical properties in the Arctic supports the notion that the sites presented here measure a variety of aerosol populations, which also experience different removal mechanisms. A robust conclusion from the seasonal cycles presented is that the Arctic cannot be treated as one common and uniform environment but rather is a region with ample spatiotemporal variability in aerosols. This notion is important in considering the design or aerosol monitoring networks in the region and is important for informing climate models to better represent short-lived aerosol climate forcers in order to yield more accurate climate predictions for the Arctic. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000441783700003 |
WOS关键词 | FILTER-BASED MEASUREMENTS ; VISIBLE-LIGHT ABSORPTION ; LONG-TERM TRENDS ; BLACK CARBON ; SEA-ICE ; ATMOSPHERIC TRANSPORT ; RADIATIVE PROPERTIES ; SIZE DISTRIBUTION ; CLIMATE-CHANGE ; AIR-POLLUTION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/21637 |
专题 | 地球科学 |
作者单位 | 1.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 2.Finnish Meteorol Inst, Atmospher Composit Res, Helsinki, Finland; 3.NOAA, Earth Syst Res Lab, Boulder, CO 80305 USA; 4.Norwegian Inst Air Res, Kjeller, Norway; 5.Environm & Climate Change Canada, Climate Res Div, Sci & Technol Branch, Toronto, ON, Canada; 6.NCSR Demokritos, Environm Radioact Lab, Inst Nucl & Radiol Sci & Technol, Energy & Safety, Athens, Greece; 7.Duke Univ, Dept Civil & Environm Engn, Durham, NC 27706 USA; 8.Stockholm Univ, Dept Environm Sci & Analyt Chem, Stockholm, Sweden; 9.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Schmeisser, Lauren,Backman, John,Ogren, John A.,et al. Seasonality of aerosol optical properties in the Arctic[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(16):11599-11622. |
APA | Schmeisser, Lauren.,Backman, John.,Ogren, John A..,Andrews, Elisabeth.,Asmi, Eija.,...&Jefferson, Anne.(2018).Seasonality of aerosol optical properties in the Arctic.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(16),11599-11622. |
MLA | Schmeisser, Lauren,et al."Seasonality of aerosol optical properties in the Arctic".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.16(2018):11599-11622. |
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