Vol. 38, issue 09, article # 3

Abstract:

Elements of the anisotropy tensor of wind turbulence in the surface air layer are calculated based on experimental data at different observation points. Their statistics, seasonal and daily variations, and dependence on temperature and wind stratification in the surface layer are analyzed. It is noted that the annual average values of the elements are highly stable despite the elements are significantly variable over short time intervals. The analysis of the effects of temperature and wind stratification of the surface air layer shows the stratification to have the greatest effect on the diagonal elements of the anisotropy tensor.

Keywords:

anisotropy, wind, surface air layer, stratification, turbulence

Figures:

References:

1. Kurbatskii A.F. Vvedenie v modelirovanie turbulentnogo perenosa impul'sa i skalyara. Novosibirsk: GEO, 2007. 331 p.
2. Stiperski I., Chamecki M., Calaf M. Anisotropy of unstably stratified near-surface turbulence // Bound.-Lay. Meteorol. 2021. V. 180, N 3. P. 363–384. DOI: 10.1007/s10546-021-00634-0.
3. Guo X., Yang W., Zhou D. Eddy scale-wise topology underlying turbulence anisotropy illuminates the dissimilar transport of momentum, heat, and moisture in a stably stratified Katabatic flow // Bound.-Lay. Meteorol. 2024. V. 190, N 5. DOI: 10.1007/s10546-024-00866-w.
4. Mei A., Zhu Y., Zhou S., Liao Y., Huang C., Li M., Leng T. An investigation of the effect of stratification stability and saltation sand flux on the anisotropy of atmospheric surface layer wall turbulence // Phys. Fluids. 2024. V. 36, N 035161. DOI: 10.1063/5.0193821.
5. Liu H., Yuan R., Mei J., Sun J., Liu Q., Wang Y. Scale properties of anisotropic and isotropic turbulence in the urban surface layer // Bound.-Lay. Meteorol. 2017. V. 165, N 2. P. 277–294. DOI: 10.1007/s10546-017-0272-z.
6. Klip C. Turbulence anisotropy in the near-surface atmosphere and the evaluation of multiple outer length scales // Bound.-Lay. Meteorol. 2014. V. 151, N 1. P. 57–77. DOI: 10.1007/s10546-013-9884-0.
7. Shikhovtsev A.Yu., Kovadlo P.G. Vertikal'nye profili opticheskoi turbulentnosti i otsenka vneshnego masshtaba turbulentnosti nad Baikal'skoi astrofizicheskoi observatoriei // Optika atmosf. i okeana. 2024. V. 37, N 9. P. 808–814. DOI: 10.15372/AOO20240912. Shikhovtsev A.Yu., Kovadlo P.G. Vertical profiles of optical turbulence and estimates of turbulence outer scale above the Baykal astrophysical observatory // Atmos. Ocean. Opt. 2024. V. 37, N 6. P. 925–931. DOI: 10.1134/S1024856024701197.
8. Смалихо И.Н., Банах В.А., Фалиц А.В., Шерстобитов А.М. Лидарные оценки степени анизотропии ветровой турбулентности в устойчивом пограничном слое атмосферы // Оптика атмосф. и океана. 2019. Т. 32, № 10. С. 808–818. DOI: 10.15372/AOO20191002.
9. Gladkikh V.A., Nevzorova I.V., Odintsov S.L., Fedorov V.A. Eksperimental'nye otsenki komponentov tenzora anizotropii turbulentnosti v prizemnom sloe atmosfery // Optika atmosf. i okeana 2014. V. 27, N 9. P. 689–697; Gladkikh V.A., Nevzorova I.V., Odintsov S.L., Fedorov V.A. Experimental estimates of turbulence anisotropy tensor components in the surface air layer // Atmos. Ocean. Opt. 2015. V. 28, N 1. P. 34–42.
10. Gladkikh V.A., Makienko A.E. Tsifrovaya ul'trazvukovaya meteostantsiya // Pribory. 2009. N 7 (109). P. 21–25.
11. Kadygrov E.N., Kuznetsova I.N., Gan'shin E.V., Gorelik A.G., Knyazev A.K., Miller E.A., Nekrasov V.V., Tochilkina T.A., Shaposhnikov A.N. Sovremennyi opyt ispol'zovaniya dannykh nazemnykh mikrovolnovykh radiometricheskikh sistem dlya izmereniya parametrov atmosfery // Optika atmosf. i okeana. 2017. V. 30, N 6. P. 502–508. DOI: 10.15372/AOO20170609.
12. Egerer U., Cassano J.J., Shupe M.D., de Boer G., Lawrence D., Doddi A., Siebert H., Jozef G., Calmer R., Hamilton J., Pilz C., Lonardi M. Estimating turbulent energy flux vertical profiles from uncrewed aircraft system measurements: exemplary results for the MOSAiC campaign // Atmos. Meas. Tech. 2023. V. 16. P. 2297–2317. DOI: 10.5194/amt-16-2297-2023.
13. Byzova N.L., Ivanov V.N., Garger E.K. Turbulentnost' v pogranichnom sloe atmosfery. L.: Gidrometeoizdat, 1989. 264 p.