1- Development of specific instrumentation deployed by the laboratory for the observation of aerosols during field campaigns (ground and airborne photometers, lidar, search coils, in-situ measurements ) - Measurement analysis

2- Monitoring of aerosols (content and radiative properties) from network measurements and space observations . Development of inversion algorithms

Benjamin TORRES

The projects

1- Development of specific instrumentation deployed by the laboratory for the observation of aerosols during field campaigns (ground and airborne photometers, lidar, search coils, in-situ measurements ) - Measurement analysis
One of the main objective within CAPPA WP-3 (Aerosol observations: Instrumentation and intensive field campaigns – Monitoring from networks and satellites) is to upgrade the state of ground based measurements in the field of aerosol/gas characterization. The strategy includes the consolidation and valorization of the existing ground based measurements (instruments and global-networks), as well as, the development of new designs in close cooperation within laboratories and French industrials.  Specifically, this project is mostly devoted to the photometry and includes two major points.  The first one is to validate  the new techniques involving direct moon measurements within AERONET-context using the standard photometer of the network Cimel CE-318. The second major goal is the employment of PLASMA, air-borne photometer, totally designed at LOA, in field campaigns (with especially interest in SHADOW-campaign; M’Bour, Senegal, Mars-April 2015) in order to provide profiles of vertical aerosol optical depth measurements and the extinction profiles derived by them. The latter are of a great interest since they can be use to validate lidar extinction profiles obtained in the same campaigns.

2- Monitoring of aerosols (content and radiative properties) from network measurements and space observations . Development of inversion algorithms.
The natural step after upgrading the ground based measurements is to develop algorithms and techniques for data treatment with special emphasis, once again, for airborne photometer PLASMA and moon photometry. Following this aim, we propose the use of GRASP-algorithm (“Generalized Retrieval of Aerosol and Surface Properties”), unified algorithm developed for characterizing atmospheric properties gathered from a variety of remote sensing observation (Dubovik et al., 2014). Apart from the simple data treatment with only single set of measurements, the algorithm suggests a multipixel inversion which provides a new different approach to the traditional methods in sun-photometer retrievals. Finally, the possibility of combining several remote sensing observations offers the opportunity to do innovative retrievals using satellite data together with ground based measurements (mainly sun-photometer and lidar).

Laboratory 
LOA

Period
start: 01/01/2014
end: 30/06/2015

Financing
Labex CaPPA