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Proceedings Paper • Open Access

Introducing the atmospheric thermodynamics lidar in Space: ATLAS
Author(s): Paolo Di Girolamo; Andreas Behrendt; Volker Wulfmeyer; Adolfo Comerón; Philippe Keckhut; Alain Hauchecorne; Evelyne Richard; Franco Marenco; Geraint Vaughan; Mathias Rotach; Roland Potthast; Alan Geer; Belay B. Demoz; Joseph Santanello; David N. Whiteman; David D. Turner

Paper Abstract

Our understanding of the distribution of heat and water in the atmosphere still shows critical gaps on all temporal and spatial scales. This is mainly due to a lack of accurate measurements of water vapor and temperature profiles - hereafter called thermodynamic (TD) profiles - with high vertical and temporal resolution, especially in the lower troposphere. Accurate, high temporal-spatial resolution observations of TD profiles are essential for improving weather forecasting and re-analyses, for studying land-atmosphere feedback processes and for improving model parameterizations of landsurface and turbulent transport processes in the Atmospheric Boundary Layer. These observational gaps can be addressed with a new active remote sensing system in space based on the Raman lidar technique. Combining vibrational and rotational Raman backscatter signals, simultaneous measurements of water vapour and temperature profiles and a variety of derived variables are possible with unprecedented vertical and horizontal resolution, especially in the lower troposphere. This is the key concept of ATLAS, which was submitted in March 2018 to the European Space Agency in response to the Call for Earth Explorer-10 Mission Ideas in the frame of ESA EOEP. An assessment of the expected performance of the system and the specifications of the different lidar sub-systems has been performed based on the application of an analytical simulation model for space-borne Raman lidar systems. Results from the simulations and technical aspects of the proposed mission will be illustrated at the conference.

Paper Details

Date Published: 12 July 2019
PDF: 7 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111806P (12 July 2019); doi: 10.1117/12.2536160
Show Author Affiliations
Paolo Di Girolamo, Univ. della Basilicata (Italy)
Andreas Behrendt, Univ. Hohenheim (Germany)
Volker Wulfmeyer, Univ. Hohenheim (Germany)
Adolfo Comerón, Univ. Politècnica de Catalunya (Spain)
Philippe Keckhut, Lab. Atmosphères, Milieux, Observations Spatiales (France)
Alain Hauchecorne, Lab. Atmosphères, Milieux, Observations Spatiales (France)
Evelyne Richard, Univ. de Toulouse (France)
Franco Marenco, Met Office (United Kingdom)
Geraint Vaughan, The Univ. of Manchester (United Kingdom)
Mathias Rotach, Univ. Innsbruck (Austria)
Roland Potthast, German Meteorological Service (Germany)
Alan Geer, European Ctr. for Medium-Range Weather Forecasts (United Kingdom)
Belay B. Demoz, Univ. of Maryland Baltimore County (United States)
Joseph Santanello, GSFC-NASA (United States)
David N. Whiteman, GSFC-NASA (United States)
David D. Turner, National Oceanic and Atmospheric Administration (United States)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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