Employing Spectral Analysis to Obtain Dispersion Parameters in an Atmospheric Environment Driven by a Mesoscale Downslope Windstorm

Cinara Ewerling da Rosa, Michel Stefanello, Silvana Maldaner, Douglas Stefanello Facco, Débora Regina Roberti, Tiziano Tirabassi and Gervásio Annes Degrazia
Additional contact information
Cinara Ewerling da Rosa: Departamento de Física, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
Michel Stefanello: Departamento de Física, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
Silvana Maldaner: Departamento de Física, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
Douglas Stefanello Facco: Research Center on Remote Sensing and Meteorology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91501-970, RS, Brazil
Débora Regina Roberti: Departamento de Física, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
Tiziano Tirabassi: Departamento de Física, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
Gervásio Annes Degrazia: Departamento de Física, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil

IJERPH, 2021, vol. 18, issue 24, 1-11

Abstract: Considering the influence of the downslope windstorm called “Vento Norte” (VNOR; Portuguese for “North Wind”) in planetary boundary layer turbulent features, a new set of turbulent parameterizations, which are to be used in atmospheric dispersion models, has been derived. Taylor’s statistical diffusion theory, velocity spectra obtained at four levels (3, 6, 14, and 30 m) in a micrometeorological tower, and the energy-containing eddy scales are used to calculate neutral planetary boundary layer turbulent parameters. Vertical profile formulations of the wind velocity variances and Lagrangian decorrelation time scales are proposed, and to validate this new parameterization, it is applied in a Lagrangian Stochastic Particle Dispersion Model to simulate the Prairie Grass concentration experiments. The simulated concentration results were shown to agree with those observed.

Keywords: Vento Norte; downslope windstorm; neutral boundary layer; shear-driven turbulence; turbulent parameterization (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/18/24/13027/pdf (application/pdf)
https://www.mdpi.com/1660-4601/18/24/13027/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:18:y:2021:i:24:p:13027-:d:699273

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().