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(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Wavelet analysis of the wind velocity and temperature variability in the Amazon Forest

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Autor(es):
Maurício José Alves Bolzan ; Paulo Cesar Vieira
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: Brazilian Journal of Physics; v. 36, n. 4a, p. 1217-1222, Dez. 2006.
Resumo

We studied the turbulent interactions among vertical wind velocity and temperature time-series measured in the Amazonian forest, during the wet season campaign of Large Biophere-Atmosphere Experiment in Amazonia (LBA) in 1999. The approach is based on the estimation of the correlation coefficient between the different scales in turbulent fields and Cross Wavelet Power (XWP). The results suggest that the correlations among scales of the vertical wind velocity are due to the Coherent Structures (CS), a large scale signature in the thermal profile. These coherent structures, kind of ramps, promoted an increase in the interaction among both variables, vertical wind velocity and temperature, and also depends on the atmospheric stability conditions. Furthermore, these coherent structures may explain the higher values of the correlation coefficient found in the large scales during the diurnal period compared with the nocturnal period, for the vertical wind velocity. (AU)

Processo FAPESP: 05/00511-9 - Análise estatística e ondeleta das relações Sol-Terra
Beneficiário:Maurício José Alves Bolzam
Linha de fomento: Auxílio à Pesquisa - Regular