Optical turbulence in the coastal area over False Bay /South Africa: Comparison of measurements and modeling results
conference paper
The atmospheric influence on wave propagation was investigated during the First European South African Transmission ExpeRiment from June 2015 to February 2016. The focus in this article was set on optical turbulence, the main atmospheric factor affecting the position and strength of Laser beams, the performance of electro-optical systems and imaging. Measurements were performed continuously during the campaign on three sites over the northwestern part of False Bay. The optical turbulence measurements include in situ measurements using an ultrasonic anemometer at the Roman Rock Island. Integrated optical turbulence measurements were performed at two sites, over a path of 1.8 km and a long distance path of 8.6 km. The sites may be affected by local effects of the coastal environment. For comparison, the optical turbulence was modeled using micrometeorological parameterization. Additionally, the optical turbulence was determined by simulations using the weather research and forecast model WRF. Simulation results were compared to measurements considering seasonal and meteorological variations. The representativeness of the measurements locations for offshore measurements will be discussed. © 2018 SPIE.
Topics
Inhomogeneous distribution of optical turbulenceMaritime surface layerSeasonal cycleAdaptive systemsCoastal zonesLaser beamsLight propagationOffshore oil well productionTurbulenceWeather forecastingComparison of measurementsElectro-optical systemsMeteorological variationOptical turbulenceSeasonal cycleSurface layersTransmission experimentsWeather Research and Forecast modelsAtmospheric thermodynamics
TNO Identifier
844218
ISSN
0277786X ; 9781510621572
Source
Environmental Effects on Light Propagation and Adaptive Systems 2018, 12 September 2018 through 13 September 2018, 10787
Publisher
SPIE
Article nr.
1078703
Source title
Proceedings of SPIE - The International Society for Optical Engineering
Editor(s)
Gladysz, S.
Stein, K.U.
Stein, K.U.
Files
To receive the publication files, please send an e-mail request to TNO Repository.