Journal ArticleDOI
The Airborne Demonstrator for the Direct-Detection Doppler Wind Lidar ALADIN on ADM-Aeolus. Part I: Instrument Design and Comparison to Satellite Instrument
Oliver Reitebuch,Christian Lemmerz,Engelbert Nagel,Ulrike Paffrath,Yannig Durand,Martin Endemann,Frederic Fabre,Marc Chaloupy +7 more
TLDR
In this article, the European Space Agency (ESA) decided to implement a Doppler wind lidar mission called the Atmospheric Dynamics Mission Aeolus (ADM-Aeolus) to demonstrate the potential of the doppler lidar technology and the expected impact on numerical weather forecasting.Abstract:
The global observation of profiles of the atmospheric wind speed is the highest-priority unmet need for global numerical weather prediction. Satellite Doppler lidar is the most promising candidate to meet the requirements on global wind profile observations with high vertical resolution, precision, and accuracy. The European Space Agency (ESA) decided to implement a Doppler wind lidar mission called the Atmospheric Dynamics Mission Aeolus (ADM-Aeolus) to demonstrate the potential of the Doppler lidar technology and the expected impact on numerical weather forecasting. An airborne prototype of the instrument on ADM-Aeolus was developed to validate the instrument concept and retrieval algorithms with realistic atmospheric observations before the satellite launch. It is the first airborne direct-detection Doppler lidar for atmospheric observations, and it is operating at an ultraviolet wavelength of 355 nm. The optical design is described in detail, including the single-frequency pulsed laser and th...read more
Citations
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Journal ArticleDOI
Simulation and high-precision wavelength determination of noisy 2D Fabry–Pérot interferometric rings for direct-detection Doppler lidar and laser spectroscopy
TL;DR: In this paper, the authors simulate realistic fringe patterns of a Fabry-Perot-interferometer (FPI) on a 2D charge-coupled device (CCD) localized at the focal plane behind it, taking atmospheric and instrument properties like scattering and noise into account.
Journal ArticleDOI
Investigation of a field-widened Mach-Zehnder receiver to extend Fe Doppler lidar wind measurements from the thermosphere to the ground.
J. A. Smith,Xinzhao Chu +1 more
TL;DR: The use of multiple transmitted frequencies can yield a wind measurement wherein the accuracy is insensitive to the optical imperfection and misalignment of the MZI or any other factor that affects the contrast, though the precision is still impacted by the fringe contrast.
Journal ArticleDOI
Rayleigh wind retrieval for the ALADIN airborne demonstrator of the Aeolus mission using simulated response calibration
Xiaochun Zhai,Xiaochun Zhai,Uwe Marksteiner,Fabian Weiler,Christian Lemmerz,Oliver Lux,Benjamin Witschas,Oliver Reitebuch +7 more
TL;DR: In this paper, a procedure for a simulated Rayleigh response calibration (SRRC) is developed and presented in order to resolve these limitations of the A2D MRRC, which allows for the simulation of receiver responses over the whole altitude range from the German Aerospace Center (DLR) down to sea level.
Book ChapterDOI
Lidar Sensors from Space
TL;DR: Lidars have been used to map Mars, Mercury, and the Moon, with unprecedented precision and accuracy as mentioned in this paper, but they have the unique advantages of high temporal and spatial resolution and high measurement efficiency because of the shorter wavelengths.
Journal ArticleDOI
Optimization and impact assessment of Aeolus HLOS wind assimilation in NOAA's global forecast system
TL;DR: In this paper , the European Space Agency Aeolus mission launched the first-of-its-kind space-borne Doppler wind lidar in August 2018 and integrated the Level 2B (L2B) Horizontal Line of Sight (HLOS) wind observations into the NOAA Finite Volume CubedSphere Global Forecast System (FV3GFS).
References
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Journal ArticleDOI
On the Kinetic Model Description of Rayleigh–Brillouin Scattering from Molecular Gases
TL;DR: In this article, the behavior of a model kinetic equation used for describing the density fluctuation spectrum in molecular gases was analyzed in detail in the kinetic regime, in the case of molecular gases.
Journal ArticleDOI
The atmospheric dynamics mission for global wind field measurement
Ad Stoffelen,Jean Pailleux,Erland Källén,J. Michael Vaughan,Lars Isaksen,Pierre H. Flamant,Werner Wergen,Erik Andersson,Harald Schyberg,Alain Culoma,Roland Meynart,Martin Endemann,Paul Ingmann +12 more
TL;DR: The Atmospheric Dynamics Mission (ADM) as discussed by the authors demonstrated measurements of vertical wind profiles from space using a high-performance Doppler wind lidar based on direct-detection interferometric techniques.
Journal ArticleDOI
A Doppler lidar for measuring winds in the middle atmosphere
TL;DR: In this paper, a Doppler Lidar is used to measure the wave-mean flow interaction in the middle atmosphere using Rayleigh scattering from air molecules, which is designed to cover the height range 25-60 km, where radars cannot operate.
Journal ArticleDOI
The airborne multi-wavelength water vapor differential absorption lidar WALES: system design and performance
TL;DR: In this article, a high-performance airborne water vapor differential absorption lidar has been developed during the past years, which uses a four-wavelength/three-absorption line measurement scheme in the 935 nm H2O absorption band to cover the whole troposphere and lower stratosphere simultaneously.
Journal ArticleDOI
Edge technique: theory and application to the lidar measurement of atmospheric wind.
TL;DR: The frequency shift measurement insensitive to both laser and filter frequency jitter and drift is shown to be insensitive to the laser width and shape for widths that are less than the half-width of the edge filter.
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Theory of the double-edge molecular technique for Doppler lidar wind measurement.
Cristina Flesia,C. Laurence Korb +1 more