Sodars and their application for investigation of the turbulent structure of the lower atmosphere

International Conference and Early Career Scientists School on Environmental Observations, Modelling and Information Systems

生态环境科学;计算机科学

Krasnenko, N.P.^1,2 ; Shamanaeva, L.G.^3,4

Institute of Monitoring of Climatic and Ecological Systems, SB RAS, Tomsk, Russia^1

Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia^2

V. E. Zuev Institute of Atmospheric Optics, SB RAS, Tomsk, Russia^3

National Research Tomsk State University, Tomsk, Russia^4

关键词: Iterative algorithm;    Molecular absorption;    Spatio-temporal dynamics;    Structural characteristics;    Structural function;    Turbulent kinetic energy;    Turbulent structures;    Wind velocity field;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/48/1/012025/pdf
DOI  :  10.1088/1755-1315/48/1/012025

来源: IOP

【 摘 要 】

Possibilities of sodar application for investigation of the spatiotemporal dynamics of three components of wind velocity vector, longitudinal and transverse structural functions of wind velocity field, structural characteristics of temperature and wind velocity, turbulent kinetic energy dissipation rate, and outer scales of temperature and dynamic turbulence in the atmospheric boundary layer are analyzed. The original closed iterative algorithm of sodar data processing taking into account the classical and molecular absorption and the turbulent sound attenuation on the propagation path is used that allows the vertical profiles of the characteristics of temperature and wind velocity field to be reconstructed simultaneously and their interrelations to be investigated. It is demonstrated how the structure of temperature and wind turbulence is visualised in real time.