Arid
DOI10.5194/amt-9-1721-2016
LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles - Part 1: Principle of measurements and instrument evaluation
Renard, Jean-Baptiste1; Dulac, Francois2; Berthet, Gwenael1; Lurton, Thibaut1; Vignelles, Damien1; Jegou, Fabrice1; Tonnelier, Thierry3; Jeannot, Matthieu1,4; Coute, Benoit1; Akiki, Rony3; Verdier, Nicolas5; Mallet, Marc6; Gensdarmes, Francois7; Charpentier, Patrick8; Mesmin, Samuel8; Duverger, Vincent1; Dupont, Jean-Charles9; Elias, Thierry10; Crenn, Vincent2; Sciare, Jean2; Zieger, Paul11; Salter, Matthew11; Roberts, Tjarda1; Giacomoni, Jerome4; Gobbi, Matthieu4; Hamonou, Eric2; Olafsson, Haraldur12,13; Dagsson-Waldhauserova, Pavla12,13,14; Camy-Peyret, Claude15; Mazel, Christophe16; Decamps, Thierry16; Piringer, Martin17; Surcin, Jeremy1; Daugeron, Daniel18
通讯作者Renard, Jean-Baptiste
来源期刊ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
EISSN1867-8548
出版年2016
卷号9期号:4页码:1721-1742
英文摘要

The study of aerosols in the troposphere and in the stratosphere is of major importance both for climate and air quality studies. Among the numerous instruments available, optical aerosol particles counters (OPCs) provide the size distribution in diameter range from about 100 nm to a few tens of mu m. Most of them are very sensitive to the nature of aerosols, and this can result in significant biases in the retrieved size distribution. We describe here a new versatile optical particle/sizer counter named LOAC (Light Optical Aerosol Counter), which is light and compact enough to perform measurements not only at the surface but under all kinds of balloons in the troposphere and in the stratosphere. LOAC is an original OPC performing observations at two scattering angles. The first one is around 12 degrees, and is almost insensitive to the refractive index of the particles; the second one is around 60 degrees and is strongly sensitive to the refractive index of the particles. By combining measurement at the two angles, it is possible to retrieve the size distribution between 0.2 and 100 mu m and to estimate the nature of the dominant particles (droplets, carbonaceous, salts and mineral particles) when the aerosol is relatively homogeneous. This typology is based on calibration charts obtained in the laboratory. The uncertainty for total concentrations measurements is +/- 20% when concentrations are higher than 1 particle cm 3 (for a 10 min integration time). For lower concentrations, the uncertainty is up to about +/- 60% for concentrations smaller than 10 2 particle cm(-3). Also, the uncertainties in size calibration are +/- 0.025 mu m for particles smaller than 0.6 mu m, 5% for particles in the 0.7-2 mu m range, and 10% for particles greater than 2 mu m. The measurement accuracy of sub-micronic particles could be reduced in a strongly turbid case when concentration of particles > 3 mu m exceeds a few particles cm(-3). Several campaigns of cross-comparison of LOAC with other particle counting instruments and remote sensing photometers have been conducted to validate both the size distribution derived by LOAC and the retrieved particle number density. The typology of the aerosols has been validated in well-defined conditions including urban pollution, desert dust episodes, sea spray, fog, and cloud. Comparison with reference aerosol mass monitoring instruments also shows that the LOAC measurements can be successfully converted to mass concentrations.


类型Article
语种英语
国家France ; Sweden ; Iceland ; Austria
收录类别SCI-E
WOS记录号WOS:000375616100021
WOS关键词SKY RADIANCE MEASUREMENTS ; LIGHT-SCATTERING ; LOWER STRATOSPHERE ; MASS-SPECTROMETER ; AIR-POLLUTION ; DUST ; CLIMATE ; NEPHELOMETER ; POLARIZATION ; FRAMEWORK
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191625
作者单位1.Univ Orleans, LPC2E CNRS, 3A Ave Rech Sci, F-45071 Orleans, France;
2.CEA Saclay 701, Inst Pierre Simon Laplace, LSCE CEA, F-91191 Gif Sur Yvette, France;
3.Environnement SA, 111 Blvd Robespierre,BP 4513, F-78304 Poissy, France;
4.Grp Aerophile, 106 Ave Felix Faure, F-75015 Paris, France;
5.CNES, DCT BL NB, 18 Ave Edouard Belin, F-31401 Toulouse 9, France;
6.Univ Toulouse 3, Lab Aerol, 14 Ave Edouard Belin, F-31400 Toulouse, France;
7.IRSN, PSN RES, SCA, F-91192 Gif Sur Yvette, France;
8.MeteoModem, Rue Bessonville, F-77760 Ury, France;
9.Ecole Polytech, LMD IPSL, Route Saclay, F-91128 Palaiseau, France;
10.Ecole Polytech, HYGEOS LMD IPSL, Route Saclay, F-91128 Palaiseau, France;
11.Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, S-11418 Stockholm, Sweden;
12.Univ Iceland, Reykjavik, Iceland;
13.Iceland Meteorol Off, Reykjavik, Iceland;
14.Agr Univ Iceland, Reykjavik, Iceland;
15.UPMC UVSQ, Inst Pierre Simon Laplace, 4 Pl Jussieu,Boite 101, F-75252 Paris 05, France;
16.Fly N Sense, 25 Rue Marcel Issartier, F-33700 Merignac, France;
17.Zentralanstalt Meteorol & Geodynam, Fachabteilung Umwelt, Vienna, Austria;
18.Univ Auvergne, LPC2E, Paul Constans, Rue Christophe Thivrier,BP 415, F-03107 Montlucon, France
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Renard, Jean-Baptiste,Dulac, Francois,Berthet, Gwenael,et al. LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles - Part 1: Principle of measurements and instrument evaluation[J],2016,9(4):1721-1742.
APA Renard, Jean-Baptiste.,Dulac, Francois.,Berthet, Gwenael.,Lurton, Thibaut.,Vignelles, Damien.,...&Daugeron, Daniel.(2016).LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles - Part 1: Principle of measurements and instrument evaluation.ATMOSPHERIC MEASUREMENT TECHNIQUES,9(4),1721-1742.
MLA Renard, Jean-Baptiste,et al."LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles - Part 1: Principle of measurements and instrument evaluation".ATMOSPHERIC MEASUREMENT TECHNIQUES 9.4(2016):1721-1742.
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