Comparison of mixing Length parametrizations under different stability conditions in the nocturnal atmospheric boundary layer

Authors

DOI:

https://doi.org/10.5902/2179460X87948

Keywords:

Turbulence, Stable Boundary Layer, Mixture Lenght

Abstract

Mixing length was introduced in the early 20th century to determine turbulent viscosity. Since then, various formulations have emerged, reflecting the complexity of parameterizing turbulent fluxes, especially under strongly stable conditions. This study proposes a new mixing length formulation based on the dissipation of turbulent kinetic energy, avoiding autocorrelation issues. Results show the new formulation behaves consistently, decreasing with stability in weakly stable conditions and increasing in strongly stable conditions. Comparisons with other formulations indicate that this approach offers a more robust description of turbulence in the stable boundary layer (SBL).

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Author Biographies

Maicon Fonseca Andrades, Universidade Federal de Santa Maria

Bachelor's degree in mechanical engineering from the Federal University of Pampa (Unipampa). Master in engineering, area of ​​concentration in transport phenomena, from the same institution. He is interested in research and development in the areas of heat transfer, turbulence and atmospheric boundary layer.

Felipe Denardin Costa, Universidade Federal do Pampa

He holds a Bachelor's degree in Physics - Teaching Focus from the Federal University of Santa Maria (2007), a Master's degree in Physics from the Federal University of Santa Maria (2009), and a Ph.D. in Physics from the Federal University of Santa Maria (2011), with a sandwich Ph.D. period at Carl von Ossietzky Universität Oldenburg, in Germany. Currently a professor at the Federal University of Pampa - Alegrete Campus, his expertise lies in Micrometeorology, with a focus on stable boundary layer and atmospheric modeling.

Otávio Costa Acevedo, Universidade Federal de Santa Maria

Bachelor's at Meteorologia from Universidade Federal de Pelotas (1993), master's at Meteorology from Universidade de São Paulo (1995) and doctorate at Atmospheric Sciences from State University of New York (2001). Has experience in Geosciences, focusing on Geosciences, acting on the following subjects: amazon forest, turbulence and diffusion, stable boundary layer and turbulent fluxes.

Rafael Maroneze, Universidade Federal do Pampa

Graduation at Física Bacharelado from Universidade Federal de Santa Maria (2014), graduation at Formação Pedagógica em Física from Universidade Norte do Paraná (2018), master's at Physics from Universidade Federal de Santa Maria (2016) and doctorate at Physics from Universidade Federal de Santa Maria (2019). Has experience in Physics, focusing on Classic Areas of Fenomenology and its Applications

Luiz Eduardo Medeiros, Universidade Federal do Pampa

He holds a Bachelor's degree in Physics from the Federal University of Santa Maria (2002), a Master's degree in Physics from the Federal University of Santa Maria (2005), and a PhD (2011) in Atmospheric Science from the State University of New York at Albany (2011). He has experience in the area of ​​Geosciences, with an emphasis on Meteorology, working mainly on the theme of stable planetary boundary layers.

Lorena Aparecida Nunes Viana, Universidade Federal do Pampa

She has a Master's degree in Engineering with an emphasis on modeling and simulation from the Federal University of Pampa, and a degree in Chemical Engineering from the same university. Carried out research (scientific initiation on a voluntary basis) at the same university, in the area of ​​materials technology focused on the development of organic coatings doped with natural corrosion inhibitors for application in food packaging (2015) and development of natural corrosion inhibitors (2017 ).

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Published

2024-12-16

How to Cite

Andrades, M. F., Costa, F. D., Acevedo, O. C., Maroneze, R., Medeiros, L. E., & Viana, L. A. N. (2024). Comparison of mixing Length parametrizations under different stability conditions in the nocturnal atmospheric boundary layer. Ciência E Natura, 46(esp. 2), e87948. https://doi.org/10.5902/2179460X87948

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