Lilian Moor

OBTAINING THE MEANDERING LOOP PARAMETER IN LOW WIND SPEED CONDITION

The looping parameter m is the main value to characterize the meandering phenomenon. This parameter is relationship with negative lobes in the observed autocorrelation function generated from components of horizontal speed. In this work, we present a study comparing the mean values of the looping parameter between 2 diverse sites in the Brazilian sector.

A THEORETICAL REVIEW OF AUTOCORRELATION FUNCTIONS APPLIED TO HIGH AND LOW WIND SPEED

In this study is analysed an autocorrelation function suggested by Frenkiel (Frenkiel (1953)), to described negative lobes in the meandering phenomenon of the horizontal mean wind vector. This function is a hybrid expression constituted by turbulent and meandering parameters which describe pure and connected states of turbulence and meandering movements. Furthermore, the autocorrelation function is employed to fit meandering observations measured in north Brazil. An additional purpose is employ distinct mathematical and physical criteria to test this mathematical formulation. Employing the Frenkiel’s formula a formulation to the turbulence dissipation rate has been obtained.

UMA NOVA EXPRESSÃO PARA A VARIÂNCIA DA VELOCIDADE TURBULENTA CONVECTIVA DERIVADA DE UM MODELO LES

The aim of this study is to derive a new expression for the vertical turbulent velocity variance using LES data in a convective boundary layer.

ESTUDO DA TEMPERATURA SUPERFICIAL DE LAGOAS COSTEIRAS ATRAVÉS DE PARÂMETROS METEOROLÓGICOS E DADOS DE SENSORIAMENTO REMOTO

Este trabalho apresenta um metodo para estimar a temperatura da superficie de lagoas usando imagens de satelites. A investigacao mostra que existe uma relacao entre as medidas da temperatura e os padroes de vento. ABSTRACT: This paper presents a method to estimate the surface temperatures of lagoons using satellite images. The investigation reveals that there is a direct relationship between measured temperature of the lagoon and the wind patterns.