Application of multiresolution analysis to study the structure of turbulence over the Amazon rainforest

Authors

DOI:

https://doi.org/10.5902/2179460X87600

Keywords:

Atmospheric Boundary Layer, Amazon Forest, Turbulent fluxes, Multiresolution analisys, ATTO tower

Abstract

In this study, sonic anemometry measurements at 16 vertical levels of the ATTO tower were used to evaluate the temporal variation of the multiresolution (co)spectra of the wind speed and temperature components. This methodology made it possible to visualize, over a large vertical extent, which scales of turbulent movement contribute most to turbulent kinetic energy and turbulent transport of a quantity over the Amazon rainforest. In this respect, it was also possible to identify the turbulent scales most effective in the entrainment process in the early morning. The multiresolution analysis also highlighted the need to determine the scale of the spectral gap in order to obtain more robust estimates of turbulent fluxes, even for the daytime period.

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Author Biographies

Luís Gustavo Nogueira Martins, Universidade Federal de Santa Maria

He holds a bachelor's, master's and doctorate in Physics from the Federal University of Santa Maria (UFSM), with a sandwich doctorate at the University at Albany (USA). He is currently a post-doctoral fellow (CNPq/MCTI) in a project to support activities at the ATTO tower. He has experience in Physics, with an emphasis on Atmospheric Physics, working mainly on the following topics: turbulence, time series analysis, turbulent fluxes in the planetary boundary layer, ocean/atmosphere interaction and micrometeorological instrumentation.

Otávio Costa Acevedo, University of Oklahoma

He holds a bachelor's degree in Meteorology from the Federal University of Pelotas (1993), a master's degree in Meteorology from the University of São Paulo (1995) and a doctorate in Atmospheric Sciences from the State University of New York (2001). He is currently professor at the University of Oklahoma. He has experience in Meteorology, with emphasis on Micrometeorology, working mainly on the following topics: turbulent flows, stable boundary layer.

Gervásio Annes Degrazia, Universidade Federal de Santa Maria

I have a bachelor's degree in Physics and completed my degree at the UFRGS Physics Institute in 1979. I completed my master's degree at the same institute in 1984. I am currently a full professor at UFSM. I completed my doctorate at the Institute of Physics and Meteorology at the University of Karlsruhe, Germany (1988). In 1997-1998, I did a year's post-doctoral research in Turin (Italy) at the Institute of Cosmo-Geophysics of the Italian National Research Council (CNR). My studies investigate multi-scale natural phenomena in the area of micrometeorology and atmospheric turbulence and are therefore also applied to weather forecasting.

Cláudio Alberto Teichrieb, Universidade Federal de Santa Maria

He has a degree in Physics from the Federal University of Santa Maria (2005), a master's degree in Physics from the Federal University of Santa Maria (2008) and a PhD in Physics from the Federal University of Santa Maria (2012). He has experience in Physics, with an emphasis on Classical Phenomenology and its Applications, working mainly on the following subjects: Micrometeorology, Atmospheric Physics, Experimental Physics and Meteorological Instrumentation, Atmospheric Modeling and Turbulent Flows. He currently works as a collaborator in the Micrometeorology Laboratory (LuMet) at UFSM.

Franciano Scremin Puhales, Universidade Federal de Santa Maria

He has a degree in Physics - Full Degree from the Federal University of Santa Maria (2006), a degree in Physics - Bachelor's Degree from the Federal University of Santa Maria (2010), a degree in Meteorology - Bachelor's Degree from the Federal University of Santa Maria (2008), a Master's Degree in Physics from the Federal University of Santa Maria (2008) and a PhD in Physics from the Federal University of Santa Maria (2011). He is currently a lecturer in the Physics Department at the Federal University of Santa Maria. He has experience in Physics and Meteorology, with an emphasis on numerical modeling: large eddy simulation (LES), regional scale modeling with WRF (Weather Research and Forecasting) and theoretical-experimental approach to turbulent flows.

Giuliano Demarco, Universidade Federal de Santa Maria

He holds a Bachelor's degree in Physics from the Franciscan University (UFN, 2004), a Master's degree in Engineering from the Federal University of Rio Grande do Sul (UFRGS, 2009) and a PhD in Physics from the Federal University of Santa Maria (UFSM, 2013). He is an Adjunct Professor in the Department of Mechanical Engineering at UFSM. He is a permanent professor on the PGMEC at UFSM. He has experience in Physics, Mechanical Engineering and Aerospace, working mainly on the following subjects: experimental methods in wind tunnels and water tanks, using Particle Image Velocimetry (PIV) and Hot Wire Anemometry technologies in order to develop laboratory models for studies of severe events, turbulence in the atmospheric boundary layer and aerodynamics. In addition, I have been working with numerical modeling using the OpenFoam software for Newtonian fluid flow simulations.

References

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Published

2024-12-16

How to Cite

Martins, L. G. N., Acevedo, O. C., Degrazia, G. A., Teichrieb, C. A., Puhales, F. S., & Demarco, G. (2024). Application of multiresolution analysis to study the structure of turbulence over the Amazon rainforest. Ciência E Natura, 46(esp. 2), e87600. https://doi.org/10.5902/2179460X87600

Issue

Vol. 46 No. esp. 2 (2024): XIII Workshop Brasileiro de Micrometeorologia

Section

Special Edition 2

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