@Article{DiasJúniorSáPachSouz:2013:CoStDe,
author = "Dias J{\'u}nior, Cl{\'e}o Quaresma and S{\'a}, Leonardo Deane
de Abreu and Pach{\^e}co, Vanusa Bezerra and Souza, Cledenilson
Mendon{\c{c}}a de",
affiliation = "{Instituto Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Federal do Amazonas} and {Instituto Nacional de
Pesquisas da Amaz{\^o}nia (INPA)}",
title = "Coherent structures detected in the unstable atmospheric surface
layer above the Amazon forest",
journal = "Journal of Wind Engineering and Industrial Aerodynamics",
year = "2013",
volume = "115",
pages = "1--8",
month = "Apr.",
keywords = "intera{\c{c}}ao floresta-atmosfera, turbul{\^e}ncia, estruturas
coerentes, perfil de vento, ponto de inflex{\~a}o, wavelets,
turbulence, coherent structures, roughness sub-layer, wind
profile, shear instability, time-scales.",
abstract = "Some characteristics of the turbulence structure above primary
forest localized in the south-western Amazon are analyzed. The
data was collected in 60. m height meteorological tower erected in
Rebio-Jar{\'u} Reserve, Brazil. The Morlet's wavelet is used to
detect coherent structures (CS) {"}ramp{"} time scales from
turbulent virtual temperature data measured above forest, under
day-time conditions. It is shown that there is a close
relationship between time scale of the coherent structure (TCS)
and the height to the inflection point in the mean wind speed
profile (IP). A time scale associated with the IP is used to
provide useful information on inside canopy penetration flow in
order to be compared with the CS time-scale. The results show a
very robust correlation between these two time scales (for 144
half-hourly data sets, a correlation coefficient value of 0.9 have
been obtained). Such results provide new insights regarding shear
instability and turbulent eddy characteristics above tall
vegetation, in the surface roughness sub-layer (SRS).",
doi = "10.1016/j.jweia.2012.12.019",
url = "http://dx.doi.org/10.1016/j.jweia.2012.12.019",
issn = "0167-6105",
label = "scopus",
language = "en",
targetfile = "1-s2.0-S0167610513000196-main.pdf",
url = "http://dx.doi.org/10.1016/j.jweia.2012.12.019",
urlaccessdate = "16 jun. 2024"
}