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Proceedings Paper • Open Access

ATLID, the atmospheric lidar on board the Earthcare Satellite
Author(s): Arnaud Hélière; Robert Gelsthorpe; Lénaïc Le Hors; Yves Toulemont

Paper Abstract

The EarthCARE mission is the sixth Earth Explorer Mission of the ESA Living Planet Programme, with a launch date planned in 2015. It addresses the interaction and impact of clouds and aerosols on the Earth’s radiative budget. ATLID (ATmospheric LIDar), one of the four instruments of EarthCARE, shall determine vertical profiles of cloud and aerosol physical parameters (altitude, optical depth, backscatter ratio and depolarisation ratio) in synergy with other instruments. Operating in the UV range at 355 nm, ATLID provides atmospheric echoes with a vertical resolution of about 100 m from ground to an altitude of 40 km. As a result of high spectral resolution filtering, the lidar is able to separate the relative contribution of aerosol (Mie) and molecular (Rayleigh) scattering, which gives access to aerosol optical depth.

The purpose of the paper is to present the progress in the instrument and subsystem design. The instrument is currently in phase C where the detailed design of all sub-systems is being performed. Emphasis will be put on the major technological developments, in particular the laser Transmitter, the optical units and detector developments.

Paper Details

Date Published: 20 November 2017
PDF: 8 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105642D (20 November 2017); doi: 10.1117/12.2309095
Show Author Affiliations
Arnaud Hélière, European Space Agency (Netherlands)
Robert Gelsthorpe, European Space Agency (Netherlands)
Lénaïc Le Hors, EADS Astrium Satellites (France)
Yves Toulemont, EADS Astrium Satellites (France)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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