Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7891-2017 |
Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols | |
Claeys, Marine1; Roberts, Greg1,2; Mallet, Marc1; Arndt, Jovanna3,4; Sellegri, Karine5; Sciare, Jean6,7; Wenger, John3,4; Sauvage, Bastien8 | |
2017-06-30 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA; Ireland; Cyprus |
英文摘要 | As part of the ChArMEx-ADRIMED campaign (summer 2013), ground-based in situ observations were conducted at the Ersa site (northern tip of Corsica; 533 m a.s.l.) to characterise the optical, physical and chemical properties of aerosols. During the observation period, a major influence of primary marine aerosols was detected (22-26 June), with a mass concentration reaching up to 6.5 mu g m(-3) and representing more than 40% of the total PM10 mass concentration. Its relatively low ratio of chloride to sodium (average of 0.57) indicates a fairly aged sea salt aerosol at Ersa. In this work, an original data set, obtained from online real-time instruments (ATOFMS, PILS-IC) has been used to characterise the ageing of primary marine aerosols (PMAs). During this PMA period, the mixing of fresh and aged PMAs was found to originate from both local and regional (Gulf of Lion) emissions, according to local wind measurements and FLEXPART back trajectories. Two different aerosol regimes have been identified: a dust outbreak (dust) originating from Algeria/Tunisia, and a pollution period with aerosols originating from eastern Europe, which includes anthropogenic and biomass burning sources (BBP). The optical, physical and chemical properties of the observed aerosols, as well as their local shortwave (SW) direct radiative effect (DRE) in clear-sky conditions, are compared for these three periods in order to assess the importance of the direct radiative impact of PMAs compared to other sources above the western Mediterranean Basin. As expected, AERONET retrievals indicate a relatively low local SW DRF during the PMA period with mean values of -11 +/- 4 at the surface and -8 +/- 3W m(-2) at the top of the atmosphere (TOA). In comparison, our results indicate that the dust outbreak observed at our site during the campaign, although of moderate intensity (AOD of 0.3-0.4 at 440 nm and column-integrated SSA of 0.90-0.95), induced a local instantaneous SW DRF that is nearly 3 times the effect calculated during the PMA period, with maximum values up to -40 W m(-2) at the surface. A similar range of values were found for the BBP period to those during the dust period (SW DRF at the surface and TOA of -23 +/- 6 and -15 +/- 4 W m(-2) respectively). The multiple sources of measurements at Ersa allowed the detection of a PMA-dominant period and their characterisation in terms of ageing, origin, transport, optical and physical properties and direct climatic impact. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404771300001 |
WOS关键词 | SAHARAN DUST EVENT ; SEA-SALT ; SOURCE APPORTIONMENT ; MASS-SPECTROMETER ; AIRBORNE MEASUREMENTS ; MIXING STATE ; PART 1 ; BASIN ; PRECIPITATION ; VARIABILITY |
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/27284 |
专题 | 地球科学 |
作者单位 | 1.CNRS, Meteo France, UMR3589, CNRM, Toulouse, France; 2.Scripps Inst Oceanog, Ctr Atmospher Sci & Phys Oceanog, La Jolla, CA USA; 3.Univ Coll Cork, Dept Chem, Cork, Ireland; 4.Univ Coll Cork, Environm Res Inst, Cork, Ireland; 5.Univ Blaise Pascal, Observ Phys Globe Clermont Ferrand, LaMP, Lab Meteorol Phys,CNRS,UMR6016, Aubiere, France; 6.CEA Orme Merisiers, CNRS, LSCE, Unite Mixte CEA,UVSQ, F-91191 Gif Sur Yvette, France; 7.Cyprus Inst, Energy Environm Water Res Ctr, CY-2121 Nicosia, Cyprus; 8.Univ Toulouse, CNRS, IRD, LA,Observ Midi Pyrenees, 14 Ave Edouard Belin, F-31400 Toulouse, France |
推荐引用方式 GB/T 7714 | Claeys, Marine,Roberts, Greg,Mallet, Marc,et al. Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12). |
APA | Claeys, Marine.,Roberts, Greg.,Mallet, Marc.,Arndt, Jovanna.,Sellegri, Karine.,...&Sauvage, Bastien.(2017).Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12). |
MLA | Claeys, Marine,et al."Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(2017). |
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