Débora Regina Roberti
Universidade Federal de Santa Maria
122Publications
8H-index
241Citations
Publications 122
Newest
Published on Nov 1, 2018in Bragantia 1.01
Juliano Schirmbeck (Universidade Federal do Rio Grande do Sul), Denise Cybis Fontana8
Estimated H-index: 8
(Universidade Federal do Rio Grande do Sul),
Débora Regina Roberti8
Estimated H-index: 8
(Universidade Federal de Santa Maria)
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Michel Baptistella Stefanello3
Estimated H-index: 3
(Universidade Federal de Santa Maria),
Gervásio Annes Degrazia17
Estimated H-index: 17
(Universidade Federal de Santa Maria)
+ 8 AuthorsCelene Buriol2
Estimated H-index: 2
(Universidade Federal de Santa Maria)
Abstract Describing the effects of wind meandering motions on the dispersion of scalars is a challenging task, since this type of flow represents a physical state characterized by multiple scales. In this study, a Lagrangian stochastic diffusion model is derived to describe scalar transport during the horizontal wind meandering phenomenon that occurs within a planetary boundary layer. The model is derived from the linearization of the Langevin equation, and it employs a heuristic functional form...
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Published on Jul 1, 2018in Meteorological Applications 2.39
Gervásio Annes Degrazia17
Estimated H-index: 17
(Universidade Federal de Santa Maria),
Umberto Rizza6
Estimated H-index: 6
(National Research Council)
+ 9 AuthorsOtávio C. Acevedo17
Estimated H-index: 17
(Universidade Federal de Santa Maria)
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Published on Oct 16, 2017in Earth Interactions 1.88
Virnei Silva Moreira3
Estimated H-index: 3
(Universidade Federal do Pampa),
Luiz Antônio Candido2
Estimated H-index: 2
+ 5 AuthorsGervásio Annes Degrazia17
Estimated H-index: 17
(Universidade Federal de Santa Maria)
AbstractThe water balance in agricultural cropping systems is dependent on the physical and hydraulic characteristics of the soil and the type of farming, both of which are sensitive to the soil management. Most models that describe the interaction between the surface and the atmosphere do not efficiently represent the physical differences across different soil management areas. In this study, the authors analyzed the dynamics of the water exchange in the agricultural version of the Integrated B...
2 Citations Source Cite
Luis Gustavo Nogueira Martins2
Estimated H-index: 2
,
Michel Baptistella Stefanello3
Estimated H-index: 3
+ 7 AuthorsD. Anfossi18
Estimated H-index: 18
The following study employs two different autocorrelation functions (ACF) to obtain the principal parameters that describe the behavior of the low-wind meandering phenomenon. The looping parameter ( m ) and the meandering time scale ( T* ) were estimated from the fit of 828 experimental ACF evaluated from measurements accomplished at the Santa Maria micrometeorological site (Santa Maria, south of Brazil). The results show that both meandering ACFs appropriately fit the negative lobes and the osc...
1 Citations
Luis Gustavo Nogueira Martins2
Estimated H-index: 2
(Universidade Federal de Santa Maria),
Michel Baptistella Stefanello3
Estimated H-index: 3
(Universidade Federal de Santa Maria)
+ 8 AuthorsFelipe Denardin Costa5
Estimated H-index: 5
(Universidade Federal do Pampa)
In this study we analyze natural complex signals employing the Hilbert–Huang spectral analysis. Specifically, low wind meandering meteorological data are decomposed into turbulent and non turbulent components. These non turbulent movements, responsible for the absence of a preferential direction of the horizontal wind, provoke negative lobes in the meandering autocorrelation functions. The meandering characteristic time scales (meandering periods) are determined from the spectral peak provided b...
1 Citations Source Cite
Published on Oct 1, 2016in Boundary-Layer Meteorology 2.61
Luca Mortarini7
Estimated H-index: 7
,
Michel Baptistella Stefanello3
Estimated H-index: 3
(Universidade Federal de Santa Maria)
+ 3 AuthorsD. Anfossi18
Estimated H-index: 18
Investigation of low-wind cases observed during the Urban Turbulent Project campaign (Torino, Italy) and at the Santa Maria meteorological station (Santa Maria, Brazil) provides insight into the wind-meandering phenomenon, i.e. large, non-turbulent oscillations of horizontal wind speed and temperature. Meandering and non-meandering cases are identified through analysis of the Eulerian autocorrelation functions of the horizontal wind-velocity components and temperature. When all three autocorrela...
14 Citations Source Cite
The soil heat flux ( G ) is a key parameter for closing energy balance, and a significant variable to understand the surface processes, principally in meteorological applications. Fourier’s Law for heat conduction is a simple methodology to obtain G . In this methodology it is necessary to know the soil thermal conductivity ( Ks ). In this study, we use the inversion of Fourier’s Law, using experimental values for G and soil temperature in two layers to obtain Ks . The experimental data was meas...
Umberto Rizza10
Estimated H-index: 10
,
Silvana Maldaner3
Estimated H-index: 3
+ 4 AuthorsDébora Regina Roberti8
Estimated H-index: 8
The studies involving flow in offshore wind conditions increased in recent years. This interest is directly associated with the design conditions for wind turbines and wind farm aiming at optimizing the production of wind energy and the risk analysis during the lifetime a wind farm. In this context, the aim of this study is gaining additional understanding of the structure of the marine atmospheric boundary layer (MABL) and its interaction with the synoptic scale forcing. A potential application...
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