The Onboard Data-Acquisition System of Research Aircraft for Studying Atmospheric Processes

Volkov, V. V.; Kolokutin, G. E.; Strunin, M. A.; Bazanin, N. V.

doi:10.1134/s0020441219020271

Cited by 5 publications

(2 citation statements)

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“…The aircraft measuring system provides wind speed measurements with an error of not larger than 0.3 ms -1 at horizontal flight conditions and not larger than 1 ms -1 during the aircraft maneuvers [9]. This accuracy was verified during numerous field flight and numerical experiments [4], [3]. Random and systematic temperature-wind measurement errors were determined, taking into account various disturbing factors (aerodynamic disturbances, aircraft roll and pitch maneuvers, the impact of cloud particles on the sensors).…”

Section: Introductionmentioning

confidence: 99%

“…All the aircraft measuring systems received signals from a unified time server. The clocks of the on-board computers were synchronized according to these signals with an accuracy of 0.001 s, and a corresponding time was assigned to all measured parameters during the registration [3]. The wellknown methods of calculating wind speed components and air temperature, which are described in detail in the textbook [9], were used for the analysis in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of wind shear structure and turbulence characteristics in a warm front cloud system using a research aircraft

Volkov

Strunin²,

Kirin³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The manuscript presents the results of study vertical and horizontal wind shears, the spectral characteristics of turbulence in the warm front cloud system with using the Yak-42D aircraft-laboratory. Within the As-Cs clouds at altitudes of 3 - 8 km, vertical wind shear increased sharply to 1.5 ms-1 per 100 m. At altitudes of 8 - 9 km, in the jet stream zone, vertical wind shear increased up to significant values of 3.0 ms-1 per 100 m. The maximum horizontal wind shear of 0.3 ms-1 per km was reached in As-Ns clouds at altitudes of 2 - 4 km. Anisotropy of turbulence with a predominance of horizontal wind fluctuations was observed in the stable layer at the altitude of 6000 m. The normalized spectra of the wind speed fluctuations in the lower part of the cloud system (at an altitude of about 3 km) corresponded to the stable layers of the atmosphere. The maximum value of 0.8 at the coherence spectra between the temperature and the vertical wind speed fluctuations was observed at the scales of 1200 m. It is noted that a solid Cs-As-Ns cloud system could be divided into sub-layers, depending on structure of wind shear and turbulence.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%