Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.400 IF 3.400
  • IF 5-year value: 3.841 IF 5-year
    3.841
  • CiteScore value: 3.71 CiteScore
    3.71
  • SNIP value: 1.472 SNIP 1.472
  • IPP value: 3.57 IPP 3.57
  • SJR value: 1.770 SJR 1.770
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 70 Scimago H
    index 70
  • h5-index value: 49 h5-index 49
Discussion papers
https://doi.org/10.5194/amtd-8-1203-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amtd-8-1203-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 29 Jan 2015

Submitted as: research article | 29 Jan 2015

Review status
This discussion paper is a preprint. It has been under review for the journal Atmospheric Measurement Techniques (AMT). The revised manuscript was not accepted.

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.-B. Renard1, F. Dulac2, G. Berthet1, T. Lurton1, D. Vignelles1, F. Jégou1, T. Tonnelier3, C. Thaury3, M. Jeannot1,4, B. Couté1, R. Akiki3, J.-L. Mineau3, N. Verdier5, M. Mallet6, F. Gensdarmes7, P. Charpentier8, S. Mesmin8, V. Duverger1, J.-C. Dupont9, T. Elias10, V. Crenn2, J. Sciare2, J. Giacomoni4, M. Gobbi4, E. Hamonou2, H. Olafsson11, P. Dagsson-Waldhauserova11,12, C. Camy-Peyret13, C. Mazel14, T. Décamps14, M. Piringer15, J. Surcin1, and D. Daugeron16 J.-B. Renard et al.
  • 1LPC2E-CNRS/Université d'Orléans, 3A avenue de la recherche scientifique, 45071 Orléans, France
  • 2LSCE-CEA/IPSL, CEA Saclay 701, 91191 Gif-sur-Yvette, France
  • 3Environnement-SA, 111 boulevard Robespierre, BP 4513, 78304, Poissy, France
  • 4Groupe Aerophile, 106 avenue Felix Faure, 75015 Paris, France
  • 5Centre National d'Etudes Spatiales (CNES), DCT/BL/NB, 18 avenue Edouard Belin, 31401 Toulouse CEDEX 9, France
  • 6Laboratoire d'Aérologie/Université Paul Sabatier, 14 avenue Edouard Belin 31400 Toulouse, France
  • 7Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, SCA, Gif-sur-Yvette, 91192, France
  • 8MeteoModem, Rue de Bessonville, 77760 Ury, France
  • 9LMD/IPSL – Ecole Polytechnique, Route de Saclay, 91128 Palaiseau CEDEX, France
  • 10HYGEOS /LMD/IPSL – Ecole Polytechnique – Route de Saclay, 91128 Palaiseau CEDEX, France
  • 11University of Reykjavik, Iceland
  • 12Agricultural University of Iceland, Keldnaholt, 112 Reykjavik, Iceland
  • 13IPSL (UPMC/UVSQ), 4 place Jussieu, Boîte 101, 75252 Paris CEDEX 05, France
  • 14Fly-n-Sense, 25 rue Marcel Issartier, 33700 Mérignac
  • 15Zentralanstalt für Meteorologie und Geodynamik, Wien, Austria
  • 16Université d'Auvergne/LPC2E, Paul Constans, Rue Christophe Thivrier, BP 415, 03107 Montluçon CEDEX, France

Abstract. 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, aerosol particles counters provide the size distribution in diameter range from few hundreds of nm to few tens of μm. 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 (OPC) named LOAC (Light Optical Aerosols 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°, and is almost insensitive to the nature of the particles; the second one is around 60° and is strongly sensitive to the refractive index of the particles. By combining measurement at the two angles, it is possible to retrieve accurately the size distribution and to estimate the nature of the dominant particles (droplets, carbonaceous, salts and mineral particles) in several size classes. This speciation is based on calibration charts obtained in the laboratory. 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 speciation of the aerosols has been validated in well-defined conditions including urban pollution, desert dust episodes, fog, and cloud. Comparison with reference aerosol mass monitoring instruments also shows that the LOAC measurements can be successfully converted to mass concentrations. All these tests indicate that no bias is present in the LOAC measurements and in the corresponding data processing.

J.-B. Renard et al.
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
J.-B. Renard et al.
J.-B. Renard et al.
Viewed  
Total article views: 1,498 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
783 636 79 1,498 63 78
  • HTML: 783
  • PDF: 636
  • XML: 79
  • Total: 1,498
  • BibTeX: 63
  • EndNote: 78
Views and downloads (calculated since 29 Jan 2015)
Cumulative views and downloads (calculated since 29 Jan 2015)
Cited  
Saved  
Discussed  
No discussed metrics found.
Latest update: 12 Nov 2019
Publications Copernicus
Download
Citation