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

Autor(es)

Maurício José Alves Bolzan ^[1] ; Paulo Cesar Vieira ^[2]

Afiliação do(s) autor(es)

^[1] Universidade do Vale do Paraíba. Instituto de Pesquisa e Desenvolvimento. Laboratório de Física Atmosférica e Solar - Brasil

^[2] Universidade do Vale do Paraíba. Instituto de Pesquisa e Desenvolvimento. Laboratório de Física Atmosférica e Solar - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Physics; v. 36, p. 1217-1222, 2006-12-00.

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
• Modalidade de apoio: Auxílio à Pesquisa - Regular