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Continuous daytime and nighttime forecast of atmospheric optical turbulence from numerical weather prediction models

Quatresooz, Florian; Griffiths, Ryan; Bardou, Lisa; Wilson, Richard; Osborn, James; Vanhoenacker-Janvier, Danielle; Oestges, Claude

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Authors

Florian Quatresooz

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Ryan Griffiths ryan.griffiths@durham.ac.uk
PGR Student Doctor of Philosophy

Danielle Vanhoenacker-Janvier

Claude Oestges



Abstract

Future satellite-to-ground optical communication systems will benefit from accurate forecasts of atmospheric optical turbulence; namely for site selection, for the routing and the operation of optical links, and for the design of optical communication terminals. This work presents a numerical approach based on the Weather Research and Forecasting software that enables continuous forecast of the refractive index structure parameter, ๐ถ2๐‘›, vertical profiles. Two different ๐ถ2๐‘› models are presented and compared. One is based on monitoring the turbulent kinetic energy, while the other is a hybrid model using the Tatarskii equation to depict the free atmosphere region, and the Monin-Obukhov similarity theory for describing the boundary layer. The validity of both models is assessed by using thermosonde measurements from the Terrain-induced Rotor Experiment campaign, and from day and night measurements of the coherence length collected during a six-day campaign at Paranal observatory by a Shack-Hartmann Image Motion Monitor. The novelty of this work is the ability of the presented approach to continuously predict optical turbulence both during daytime and nighttime, and its validation with measurements in day and night conditions.

Citation

Quatresooz, F., Griffiths, R., Bardou, L., Wilson, R., Osborn, J., Vanhoenacker-Janvier, D., & Oestges, C. (2023). Continuous daytime and nighttime forecast of atmospheric optical turbulence from numerical weather prediction models. Optics Express, 31(21), 33850-33872. https://doi.org/10.1364/oe.500090

Journal Article Type Article
Acceptance Date Sep 14, 2023
Online Publication Date Sep 25, 2023
Publication Date Oct 9, 2023
Deposit Date Sep 27, 2023
Publicly Available Date Sep 27, 2023
Journal Optics Express
Publisher Optica
Peer Reviewed Peer Reviewed
Volume 31
Issue 21
Pages 33850-33872
DOI https://doi.org/10.1364/oe.500090
Public URL https://durham-repository.worktribe.com/output/1749895

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