LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles &ndash; Part 2: First results from balloon and unmanned aerial vehicle flights

Jean-Baptiste Renard; François Dulac; Gwenaël Berthet; Thibaut Lurton; Damien Vignelles; Fabrice Jégou; Thierry Tonnelier; Matthieu Jeannot; Benoit Couté; Rony Akiki; Nicolas Verdier; Marc Mallet; François Gensdarmes; Patrick Charpentier; Samuel Mesmin; Vincent Duverger; Jean-Charles Dupont; Thierry Elias; Vincent Crenn; Jean Sciare; Paul Zieger; Matthew Salter; Tjarda Roberts; Jérôme Giacomoni; Matthieu Gobbi; Eric Hamonou; Haraldur Olafsson; Pavla Dagsson-Waldhauserova; Claude Camy-Peyret; Christophe Mazel; Thierry Décamps; Martin Piringer; Jérémy Surcin; Daniel Daugeron

LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles – Part 2: First results from balloon and unmanned aerial vehicle flights

Jean-Baptiste Renard ¹ François Dulac ² Gwenaël Berthet ¹ Thibaut Lurton ¹ Damien Vignelles ¹ Fabrice Jégou ¹ Thierry Tonnelier ³ Matthieu Jeannot ⁴ Benoit Couté ¹ Rony Akiki ³ Nicolas Verdier ⁴ Marc Mallet ⁵ François Gensdarmes ⁶ Patrick Charpentier ⁷ Samuel Mesmin ⁷ Vincent Duverger ¹ Jean-Charles Dupont ⁸ Thierry Elias ⁹ Vincent Crenn ² Jean Sciare ² Paul Zieger ¹⁰ Matthew Salter ¹⁰ Tjarda Roberts ¹ Jérôme Giacomoni ¹¹ Matthieu Gobbi ¹¹ Eric Hamonou ² Haraldur Olafsson ¹² Pavla Dagsson-Waldhauserova ¹² Claude Camy-Peyret ¹³ Christophe Mazel ¹⁴ Thierry Décamps ¹⁴ Martin Piringer ¹⁵ Jérémy Surcin ¹ Daniel Daugeron ¹⁶

1 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace

2 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]

3 Environnement SA

4 CNES - Centre National d'Études Spatiales [Toulouse]

5 LA - Laboratoire d'aérologie - LA

6 IRSN, PSN-RES, SCA

7 MeteoModem, Ury

8 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)

9 HYGEOS (SARL)

10 Stockholm University

11 Groupe Aerophile

12 University of Iceland [Reykjavik]

13 IPSL - Institut Pierre-Simon-Laplace

14 Fly-n-Sense, Mérignac,

15 ZAMG - Zentralanstalt für Meteorologie und Geodynamik

16 Université d’Auvergne/LPC2E

Abstract : In the companion (Part I) paper, we have described and evaluated a new versatile optical particle counter/sizer named LOAC (Light Optical Aerosol Counter), based on scattering measurements at angles of 12 and 60 •. That allows for some typology identification of particles (droplets, carbonaceous, salts, and mineral dust) in addition to size-segregated counting in a large diameter range from 0.2 µm up to possibly more than 100 µm depending on sampling conditions (Renard et al., 2016). Its capabilities overpass those of preceding optical particle counters (OPCs) allowing the characterization of all kind of aerosols from submicronic-sized absorbing carbonaceous particles in polluted air to very coarse particles (> 10–20 µm in diameter) in desert dust plumes or fog and clouds. LOAC's light and compact design allows measurements under all kinds of balloons , on-board unmanned aerial vehicles (UAVs) and at Published by Copernicus Publications on behalf of the European Geosciences Union. 3674 J.-B. Renard et al.: LOAC: a counter/sizer for ground-based and balloon measurements – Part 2 ground level. We illustrate here the first LOAC airborne results obtained from a UAV and a variety of scientific balloons. The UAV was deployed in a peri-urban environment near Bordeaux in France. Balloon operations include (i) tethered balloons deployed in urban environments in Vi-enna (Austria) and Paris (France), (ii) pressurized balloons drifting in the lower troposphere over the western Mediter-ranean (during the Chemistry-Aerosol Mediterranean Experiment – ChArMEx campaigns), (iii) meteorological sounding balloons launched in the western Mediterranean region (ChArMEx) and from Aire-sur-l'Adour in southwestern France (VOLTAIRE-LOAC campaign). More focus is put on measurements performed in the Mediterranean during (ChArMEx) and especially during African dust transport events to illustrate the original capability of balloon-borne LOAC to monitor in situ coarse mineral dust particles. In particular, LOAC has detected unexpected large particles in desert sand plumes.

Document type :

Journal articles

Domain :

Sciences of the Universe [physics] / Ocean, Atmosphere

Physics [physics] / Physics [physics] / Atmospheric and Oceanic Physics [physics.ao-ph]

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LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles – Part 2: First results from balloon and unmanned aerial vehicle flights

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