Multipoint Measurements of Temperature and Wind in the Surface Layer

Shishov, E. A.; Solenaya, O. A.; Chkhetiani, О. G.; Azizyan, G. V.; Koprov, V. M.

doi:10.1134/s0001433821030087

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…The analysis of the data obtained revealed a deviation from the laws of isotropic turbulence during the experiment: the measured ratio of the turbulence scales ranges from 0.59 to 0.74, whereas it should be 0.5 for isotropic turbulence. This behavior of the turbulence scale ratio is in agreement with the data of [38,39] obtained over several years at the territory of the Tsimlyansk Scientific Station of the A.M. Obukhov Institute of Atmospheric Physics, as well as with the results of the experiment in an urban environment [3].…”

Section: Discussionsupporting

confidence: 91%

“…For example, measurements of the ratio of turbulence scales for the urban environment in different seasons (winter, spring, summer, and fall) provide the ratios L v L u = 0.70 − 0.79. Thus, the obtained results on the ratio of longitudinal and lateral turbulence scales are in agreement with the conclusions of [3,32,38,39].…”

Section: Longitudinal and Lateral Scales Of Turbulencesupporting

confidence: 90%

“…The orography of the BEO territory is similar to the orography of the Tsimlyansk Scientific Station of the A.M. Obukhov Institute of Atmospheric Physics. Thus, we can compare our results concerning the turbulence scales with the results reported in [38,39].…”

Section: Introductionsupporting

confidence: 52%

“…In the experiments [38,39], which were carried out for several years at the territory of the Tsimlyansk Research Station of the A.M. Obukhov Institute of Atmospheric Physics, it was found that the longitudinal scale, on average, exceeds the lateral scale 1.4 times or L v L u ≤ 0.71. The territories of the Observatory and the Tsimlyansk Research Station have a nearly flat underlying surface.…”

Section: Longitudinal and Lateral Scales Of Turbulencementioning

confidence: 99%

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High-Resolution Profiling of Atmospheric Turbulence Using UAV Autopilot Data

Shelekhov

Afanasiev

Shelekhova

et al. 2023

Drones

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The capabilities of hovering unmanned aerial vehicles (UAVs) in low-altitude sensing of atmospheric turbulence with high spatial resolution are studied experimentally. The vertical profile of atmospheric turbulence was measured at the Basic Experimental Observatory (Tomsk, Russian Federation) with three quadcopters hovering at altitudes of 4, 10, and 27 m in close proximity (~5 m) to anemometers installed on weather towers. The behavior of the longitudinal and lateral wind velocity components in the 0–10 Hz frequency band is analyzed. In addition, the obtained wind velocity components were smoothed over 1 min by the moving average method to describe long turbulent wind gusts. The discrepancy between the UAV and anemometer data is examined. It is found that after smoothing, the discrepancy does not exceed 0.5 m/s in 95% of cases. This accuracy is generally sufficient for measurements of the horizontal wind in the atmosphere. The spectral and correlation analysis of the UAV and anemometer measurements is carried out. The profiles of the longitudinal and lateral scales of turbulence determined from turbulence spectra and autocorrelation functions are studied based on the UAV and anemometer data.

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Section: Discussionsupporting

confidence: 91%