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A Novel Satellite Mission Concept for Upper Air Water Vapour, Aerosol and Cloud Observations Using Integrated Path Differential Absorption LiDAR Limb Sounding

Hoffmann, Alex and Clifford, Debbie and Aulinas, Josep and Carton, James G. and Deconinck, Florian and Esen, Berivan and Hüsing, Jakob and Kern, Katharina and Kox, Stephan and Krejci, David and Krings, Thomas and Lohrey, Steffen and Romano, Patrick and Topham, Ricardo and Weitnauer, Claudia (2012) A Novel Satellite Mission Concept for Upper Air Water Vapour, Aerosol and Cloud Observations Using Integrated Path Differential Absorption LiDAR Limb Sounding. Remote Sensing, 4, pp. 867-910. DOI: 10.3390/rs4040867. ISSN 2072-4292.

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Official URL: http://www.mdpi.com/2072-4292/4/4/867/

Abstract

We propose a new satellite mission to deliver high quality measurements of upper air water vapour. The concept centres around a LiDAR in limb sounding by occultation geometry, designed to operate as a very long path system for differential absorption measurements. We present a preliminary performance analysis with a system sized to send 75 mJ pulses at 25 Hz at four wavelengths close to 935 nm, to up to 5 microsatellites in a counter-rotating orbit, carrying retroreflectors characterized by a reflected beam divergence of roughly twice the emitted laser beam divergence of 15 �rad. This provides water vapour profiles with a vertical sampling of 110 m; preliminary calculations suggest that the system could detect concentrations of less than 5 ppm. A secondary payload of a fairly conventional medium resolution multispectral radiometer allows wide-swath cloud and aerosol imaging. The total weight and power of the system are estimated at 3 tons and 2,700 W respectively. This novel concept presents significant challenges, including the performance of the lasers in space, the tracking between the main spacecraft and the retroreflectors, the refractive effects of turbulence, and the design of the telescopes to achieve a high signal-to-noise ratio for the high precision measurements. The mission concept was conceived at the Alpbach Summer School 2010.

Document Type:Article
Title:A Novel Satellite Mission Concept for Upper Air Water Vapour, Aerosol and Cloud Observations Using Integrated Path Differential Absorption LiDAR Limb Sounding
Authors:
AuthorsInstitution or Email of Authors
Hoffmann, AlexUniv. of Cambridge, UK
Clifford, DebbieUniv. of Reading, UK
Aulinas, JosepUniv. of Girona, E
Carton, James G.Dublin City Univ., IR
Deconinck, FlorianInst. Supérieur de l’Aéronautique et de l’Espace, Toulouse, F
Esen, BerivanUniv. of Toronto, CND
Hüsing, JakobESTEC, ESA, Noordwijk, NL
Kern, KatharinaUniv. of Graz, A
Kox, StephanStephan.Kox@dlr.de
Krejci, DavidVienna Univ. of Technology, A
Krings, ThomasUniv. of Bremen
Lohrey, SteffenUniv. of Oxford, UK
Romano, PatrickGraz Univ. of Technology, A
Topham, RicardoInt. Space Univ., Illkirch-Graffenstaden, F
Weitnauer, ClaudiaUniv. of Augsburg
Date:27 March 2012
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:4
DOI:10.3390/rs4040867
Page Range:pp. 867-910
ISSN:2072-4292
Status:Published
Keywords:UTLS; stratosphere; active limb sounding; laser occultation; spaceborne reflectors;
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignement
DLR - Research theme (Project):R -- no assignement
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Remote Sensing
Deposited By: Stephan Kox
Deposited On:11 Apr 2012 15:27
Last Modified:12 Dec 2013 21:38

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