Comparison of the refractive index structure constant prediction using radiosonde data to in-situ thermosonde measurements

2012 ◽  
Author(s):  
Radian-Radu Belu ◽  
George Jumper
Keyword(s):  
Refractive Index ◽  
Structure Constant ◽  
Index Structure ◽  
Radiosonde Data

scholarly journals Derivation of Clear-Air Turbulence Parameters from High-Resolution Radiosonde Data

2017 ◽  
Vol 34 (2) ◽  
pp. 277-293 ◽  
Author(s):  
E. Martini ◽  
A. Freni ◽  
F. Cuccoli ◽  
L. Facheris
Keyword(s):  
Refractive Index ◽  
High Resolution ◽  
Potential Temperature ◽  
Structure Constant ◽  
Thin Layers ◽  
Index Structure ◽  
Radiosonde Data ◽  
Atmospheric Conditions ◽  
Air Turbulence ◽  
The Impact

AbstractThe knowledge of atmospheric refractive index structure constant () profiles is fundamental to determine the intensity of turbulence, and hence the impact of the scintillation impairment on the signals propagating in the troposphere. However, their relation with atmospheric variables is not straightforward, and profiles based on statistical considerations are normally employed. This can be a shortcoming when performing simulations for which scintillation disturbances need to be consistent with the assumed atmospheric conditions. To overcome this limitation, this work describes a procedure to obtain an estimate of the refractive index structure constant profile of clear-air turbulence under given atmospheric conditions. The procedure is based on the application of the vertical gradient approach to high-resolution radiosonde data. Since turbulence is known to be confined to vertically thin layers, a preliminary identification of turbulent layers is required. This is accomplished by analyzing the profiles of the Richardson number. The value of the outer scale length is estimated using the Thorpe length calculated from the potential temperature profile. The procedure is applied to high-resolution radiosonde data that have been acquired from the Stratosphere–Troposphere Processes and their Role in Climate (SPARC) Data Center, and the obtained results are consistent with measured profiles previously published in the literature.

Estimating refractive index structure constant and extinction coefficient under misalignment

Optik ◽  
2020 ◽  
Vol 206 ◽  
pp. 164182
Author(s):  
Dagang Jiang ◽  
Ting Lyu ◽  
Xin Liu ◽  
Yishuai Yuan ◽  
Bin Zhu
Keyword(s):  
Refractive Index ◽  
Extinction Coefficient ◽  
Structure Constant ◽  
Index Structure

scholarly journals Equivalent refractive-index structure constant of non-Kolmogorov turbulence

2015 ◽  
Vol 23 (18) ◽  
pp. 23004 ◽  
Author(s):  
Yujie Li ◽  
Wenyue Zhu ◽  
Xiaoqing Wu ◽  
Ruizhong Rao
Keyword(s):  
Refractive Index ◽  
Structure Constant ◽  
Index Structure ◽  
Kolmogorov Turbulence
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