Articles | Volume 14, issue 9
https://doi.org/10.5194/amt-14-6305-2021
https://doi.org/10.5194/amt-14-6305-2021
Research article
 | 
28 Sep 2021
Research article |  | 28 Sep 2021

ALADIN laser frequency stability and its impact on the Aeolus wind error

Oliver Lux, Christian Lemmerz, Fabian Weiler, Thomas Kanitz, Denny Wernham, Gonçalo Rodrigues, Andrew Hyslop, Olivier Lecrenier, Phil McGoldrick, Frédéric Fabre, Paolo Bravetti, Tommaso Parrinello, and Oliver Reitebuch

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Cited articles

Abshire, J. B., Sun, X., Riris, H., Sirota, J. M., McGarry, J. F., Palm, S., Yi, D., and Liiva, P.: Geoscience Laser Altimeter System (GLAS) on the ICESat Mission: On-orbit measurement performance, Geophys. Res. Lett., 32, L21S02, https://doi.org/10.1029/2005GL024028, 2005. 
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Andersson, E.: Statement of Guidance for Global Numerical Weather Prediction (NWP), World Meteorological Organisation, available at: https://docplayer.net/194586713-Statement-of-guidance-for-global-numerical- weather-prediction-nwp.html (last access: 15 September 2021), 2018. 
Baidar, S., Tucker, S. C., Beaubien, M., and Hardesty, R. M.: The Optical Autocovariance Wind Lidar. Part II: Green OAWL (GrOAWL) Airborne Performance and Validation, J. Atmos. Oceanic Technol., 35, 2099–2116, https://doi.org/10.1175/JTECH-D-18-0025.1, 2018. 
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Short summary
The work assesses the frequency stability of the laser transmitters on board Aeolus and discusses its influence on the quality of the global wind data. Excellent frequency stability of the space lasers is evident, although enhanced frequency noise occurs at certain locations along the orbit due to micro-vibrations that are introduced by the satellite’s reaction wheels. The study elaborates on this finding and investigates the extent to which the enhanced frequency noise increases the wind error.
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