Beyond Taylor's frozen turbulence hypothesis in ground-layer turbulence

Darío G. Pérez, Ivan R. González, Hishan Farfán

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

Taylor's Frozen Turbulence Hypothesis (TFTH) has been used extensively in theoretical studies to model the temporal fluctuations of optical quantities affected by atmospheric turbulence. It has been relied upon to provide temporal-frequency spectra under varying propagation conditions and for different atmospheric refractive index models. However, experimental works have revealed its limitations, such as systematic inaccuracies in estimating cross winds during calm nights in scintillation measurements at astronomical sites, scintillation discrepancies in ground-layer measurements, and broad estimates of the coherence time in phase fluctuation measurement techniques. This highlights the need to recognize the limitations of the TFTH and seek alternatives that can provide a more reliable description of atmospheric turbulence's temporal fluctuations. Here, we propose a spatio-temporal statistics for refractive index fluctuations through fluid dynamics models and evaluate the complex phase propagation under weak turbulence. Then, we test its ability to reproduce experimental observations under different ground-layer turbulence conditions.

Idioma originalInglés
Título de la publicación alojadaEnvironmental Effects on Light Propagation and Adaptive Systems VI
EditoresKarin Stein, Szymon Gladysz
EditorialSPIE
ISBN (versión digital)9781510666917
DOI
EstadoPublicada - 2023
EventoEnvironmental Effects on Light Propagation and Adaptive Systems VI 2023 - Amsterdam, Países Bajos
Duración: 5 sep. 20236 sep. 2023

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
Volumen12731
ISSN (versión impresa)0277-786X
ISSN (versión digital)1996-756X

Conferencia

ConferenciaEnvironmental Effects on Light Propagation and Adaptive Systems VI 2023
País/TerritorioPaíses Bajos
CiudadAmsterdam
Período5/09/236/09/23

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