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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 8 | Copyright
Atmos. Meas. Tech., 11, 4671-4691, 2018
https://doi.org/10.5194/amt-11-4671-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 09 Aug 2018

Research article | 09 Aug 2018

Description and applications of a mobile system performing on-road aerosol remote sensing and in situ measurements

Ioana Elisabeta Popovici1,2, Philippe Goloub1, Thierry Podvin1, Luc Blarel1, Rodrigue Loisil1, Florin Unga1, Augustin Mortier3, Christine Deroo1, Stéphane Victori2, Fabrice Ducos1, Benjamin Torres4,1, Cyril Delegove1, Marie Choël5, Nathalie Pujol-Söhne6, and Christophe Pietras7 Ioana Elisabeta Popovici et al.
  • 1Univ. Lille, CNRS, UMR8518 – LOA – Laboratoire d'Optique Atmosphérique, 59000 Lille, France
  • 2R&D Department, Cimel Electronique, 75011 Paris, France
  • 3Division for Climate Modelling and Air Pollution, Norwegian Meteorological Institute, 0313 Oslo, Norway
  • 4GRASP-SAS, Remote sensing developments, Univ. Lille, 59650 Villeneuve d'Ascq, France
  • 5Univ. Lille, CNRS, UMR8516 – LASIR – Laboratoire de Spectrochimie Infrarouge et Raman, 59000 Lille, France
  • 6Modelling Department, ATMO Hauts-de-France, 59000 Lille, France
  • 7Ecole Polytéchnique, CNRS, Laboratoire de Météorologie Dynamique, 91120 Palaiseau, France

Abstract. The majority of ground-based aerosols observations are limited to fixed locations, narrowing the knowledge on their spatial variability. In order to overcome this issue, a compact Mobile Aerosol Monitoring System (MAMS) was developed to explore the aerosol vertical and spatial variability. This mobile laboratory is equipped with a micropulse lidar, a sun photometer and an aerosol spectrometer. It is distinguished from other transportable platforms through its ability to perform on-road measurements and its unique feature lies in the sun photometer's capacity for tracking the sun during motion. The system presents a great flexibility, being able to respond quickly in case of sudden aerosol events such as pollution episodes, dust, fire or volcano outbreaks. On-road mapping of aerosol physical parameters such as attenuated aerosol backscatter, aerosol optical depth, particle number and mass concentration and size distribution is achieved through the MAMS. The performance of remote sensing instruments on-board has been evaluated through intercomparison with instruments in reference networks (i.e. AERONET and EARLINET), showing that the system is capable of providing high quality data. This also illustrates the application of such a system for instrument intercomparison field campaigns. Applications of the mobile system have been exemplified through two case studies in northern France. MODIS AOD data was compared to ground-based mobile sun photometer data. A good correlation was observed with R2 of 0.76, showing the usefulness of the mobile system for validation of satellite-derived products. The performance of BSC-DREAM8b dust model has been tested by comparison of results from simulations for the lidar–sun-photometer derived extinction coefficient and mass concentration profiles. The comparison indicated that observations and the model are in good agreement in describing the vertical variability of dust layers. Moreover, on-road measurements of PM10 were compared with modelled PM10 concentrations and with ATMO Hauts-de-France and AIRPARIF air quality in situ measurements, presenting an excellent agreement in horizontal spatial representativity of PM10. This proves a possible application of mobile platforms for evaluating the chemistry-models performances.

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This paper aims to show the potential of an instrumented mobile platform, performing on-road remote sensing and in situ measurements, to derive aerosol properties. It is distinguished from other transportable platforms through its ability to perform measurements during movement. Its reduced size, versatility and great flexibility makes it suitable for following sudden aerosol events and for validating satellite measurements and model simulations.
This paper aims to show the potential of an instrumented mobile platform, performing on-road...
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