Atmospheric turbulence measurements by angle of arrival fluctuations and intensity scintillations with large aperture

2002 ◽  
Author(s):  
Y. Glick ◽  
R. Zaibel ◽  
G. Bar-Tal ◽  
Y. Bar-Sagi
Keyword(s):  
Atmospheric Turbulence ◽  
Angle Of Arrival ◽  
Turbulence Measurements ◽  
Large Aperture

222Rn as indicator of atmospheric turbulence: measurements at Lake Maggiore and on the pre-Alps

2006 ◽  
Vol 86 (2) ◽  
pp. 271-288 ◽  
Author(s):  
Lucia Sesana ◽  
Barbara Ottobrini ◽  
Giancarla Polla ◽  
Ugo Facchini
Keyword(s):  
Atmospheric Turbulence ◽  
Turbulence Measurements ◽  
Lake Maggiore

Angle-of-arrival of a radar beam in atmospheric turbulence

2003 ◽  
Author(s):  
R.W. McMillan ◽  
R.A. Smith ◽  
M. Shipman ◽  
E.J. Holder ◽  
J.C. Kerce ◽  
...  
Keyword(s):  
Atmospheric Turbulence ◽  
Angle Of Arrival ◽  
Radar Beam

scholarly journals Joint measurements of optical parameters by irradiance scintillation and angle-of-arrival fluctuations

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 387-393
Author(s):  
Chao Gao ◽  
Haodong Liang ◽  
Xiaofeng Li
Keyword(s):  
Error Analysis ◽  
Atmospheric Turbulence ◽  
Power Law ◽  
Structure Constant ◽  
Simultaneous Equations ◽  
Scintillation Index ◽  
Optical Parameters ◽  
Angle Of Arrival ◽  
Power Law Exponent

AbstractA method for joint measuring the power law exponent and the structure constant of atmospheric turbulence is proposed and examined. The measurements are equivalent to solve the simultaneous equations formed by the irradiance scintillation index and the angle-of-arrival fluctuations variance, where the measured parameters are regarded as the unknowns. The measured error analysis is also presented. Based on our proposed method, the measured results accord with the daily trend of atmospheric turbulence.

scholarly journals Evaluation of wake influence on high-resolution balloon-sonde measurements

2019 ◽  
Vol 12 (8) ◽  
pp. 4191-4210 ◽  
Author(s):  
Jens Söder ◽  
Michael Gerding ◽  
Andreas Schneider ◽  
Andreas Dörnbrack ◽  
Henrike Wilms ◽  
...  
Keyword(s):  
High Resolution ◽  
Uncertainty Analysis ◽  
Atmospheric Turbulence ◽  
Evaluation Tool ◽  
Turbulence Measurements ◽  
Wake Effects ◽  
Humidity Measurements ◽  
Average Probability ◽  
Vertical Winds

Abstract. Balloons are used for various in situ measurements in the atmosphere. On turbulence measurements from rising balloons there is a potential for misinterpreting wake-created fluctuations in the trail of the balloon for atmospheric turbulence. These wake effects have an influence on temperature and humidity measurements from radiosondes as well. The primary aim of this study is to assess the likelihood for wake encounter on the payload below a rising balloon. Therefore, we present a tool for calculating this probability based on radiosonde wind data. This includes a retrieval of vertical winds from the radiosonde and an uncertainty analysis of the wake assessment. Our wake evaluation tool may be used for any balloon–gondola distance and provides a significant refinement compared to existing assessments. We have analysed wake effects for various balloon–gondola distances applying atmospheric background conditions from a set of 30 radiosondes. For a standard radiosonde we find an average probability for wake encounter of 28 %, pointing out the importance of estimating wake effects on sounding balloons. Furthermore, we find that even millimetre-sized objects in the payload can have significant effects on high-resolution turbulence measurements, if they are located upstream of the turbulence sensor.

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