[hal-00665889] A new generation of mobile Raman lidar: Application to MEGAPOLI project

The Commissariat à l'Energie Atomique (CEA) and the Centre National de la Recherche Scientifique (CNRS) have developed the Lidar pour l'Etude et le suivi des Aérosols Atmosphériques (LESAA) [1] and the Lidar Aérosols UltraViolet Aéroporté (LAUVA) [2]. The new version of these prototypes is now commercialized with success under license by the LEOSPHERE Company with the name EZ LIDAR®. This eyesafe instrument is based on a Nd:Yag laser tripled at the wavelength of 355 nm and has a high spatial resolution of 1.5 m along the line of sight. It allows performing measurement of both aerosols optical properties and atmospheric structure up to 14 km. This lidar has the advantage to be compact and light what makes it easily transportable (in a truck [1] [3] or onboard an UltraLight Aircraft (ULA) [2]). The CEA and LEOSPHERE have modified the LESAA Rayleigh-Mie lidar into a two-wavelength nitrogen Raman lidar to build the LESAA-N2 lidar system. This prototype has recently been involved in the MEGAPOLI campaign "Megacities: Emissions, urban, regional and Global Atmospheric POLlution and climate effects, and integrated tools for assessment and mitigation" which took place at Paris in July 2009 (http://megapoli.dmi.dk/). We present and analyze here daytime and nighttime observations obtained with this Raman lidar during the MEGAPOLI campaign at Saclay in the suburb of Paris.



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