ANALYSIS OF THE VERTICAL STRUCTURE OF TURBULENT KINETIC ENERGY BALANCE FOR THE OCCURRENCE OF INTERMITTENT TURBULENT EVENTS

Authors

  • Thaís Freitas Dill Universidade Federal de Santa Maria, Santa Maria, RS
  • Adriano Battisti Universidade Federal de Santa Maria, Santa Maria, RS
  • Felipe Denardin Costa Universidade Federal do Pampa, Alegrete, RS
  • Luiz Eduardo Medeiros Universidade Federal de Santa Maria, Santa Maria, RS
  • Viviane da Silva Guerra Universidade Federal de Santa Maria, Santa Maria, RS

DOI:

https://doi.org/10.5902/2179460X20284

Keywords:

Intermittency. Stable boundary layer. Shear. Turbulence. Vertical propagation.

Abstract

This study aims to analyze the vertical structure of the terms of the ECT balance equation for the occurrence of intermittent events generated in surface and propagate upward. In order to verify that the dominant terms and the role of each term during such events. It was used FLOSSII experimental data collected in seven vertical levels (1 m, 2 m, 5 m, 10 m, 15 m, 20 m and 30 m) and have a sampling frequency of 60 Hz. The study period comprises between 20 November 2002 to 02 April 2003 and of that total, this study, we analyzed 108 nights. The majority of events generated surface (EB) are very weak compared to the events generated at the top of the tower layer and propagate down. The analyzes made by vertical turbulence structure and ECT balance for the EB’s showed that the dominant term near surface is the mechanical production. Thus, with increasing shear surface, producing turbulence and consequently, the transport of works term “loading” turbulence to higher levels of the atmosphere.

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Published

2016-07-20

How to Cite

Dill, T. F., Battisti, A., Costa, F. D., Medeiros, L. E., & Guerra, V. da S. (2016). ANALYSIS OF THE VERTICAL STRUCTURE OF TURBULENT KINETIC ENERGY BALANCE FOR THE OCCURRENCE OF INTERMITTENT TURBULENT EVENTS. Ciência E Natura, 38, 406–411. https://doi.org/10.5902/2179460X20284

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