Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest
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-Jarú Reserve, Brazil. The Morlet's wavelet is used to detect coherent structures (CS) "ramp" time sca...
| Autor principal: | Dias Júnior, Cléo Quaresma |
|---|---|
| Outros Autores: | Sá, Leonardo Deane Abreu, Pach?co, V. B., Souza, Cledenilson Mendonça de |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Wind Engineering and Industrial Aerodynamics
2020
|
| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17892 |
| id |
oai:repositorio:1-17892 |
|---|---|
| recordtype |
dspace |
| spelling |
oai:repositorio:1-17892 Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest Dias Júnior, Cléo Quaresma Sá, Leonardo Deane Abreu Pach?co, V. B. Souza, Cledenilson Mendonça de Coherent Structure Shear Instability Time-scale Wavelets Wind Profiles Meteorological Instruments Surface Roughness Time Measurement Turbulence Forestry Forestry Instruments Meteorology Roughness Surface Properties Turbulence 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-Jarú 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). © 2013 Elsevier Ltd. 2020-06-15T21:49:54Z 2020-06-15T21:49:54Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17892 10.1016/j.jweia.2012.12.019 en Volume 115, Pags. 1-8 Restrito Journal of Wind Engineering and Industrial Aerodynamics |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Coherent Structure Shear Instability Time-scale Wavelets Wind Profiles Meteorological Instruments Surface Roughness Time Measurement Turbulence Forestry Forestry Instruments Meteorology Roughness Surface Properties Turbulence |
| spellingShingle |
Coherent Structure Shear Instability Time-scale Wavelets Wind Profiles Meteorological Instruments Surface Roughness Time Measurement Turbulence Forestry Forestry Instruments Meteorology Roughness Surface Properties Turbulence Dias Júnior, Cléo Quaresma Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest |
| topic_facet |
Coherent Structure Shear Instability Time-scale Wavelets Wind Profiles Meteorological Instruments Surface Roughness Time Measurement Turbulence Forestry Forestry Instruments Meteorology Roughness Surface Properties Turbulence |
| description |
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-Jarú 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). © 2013 Elsevier Ltd. |
| format |
Artigo |
| author |
Dias Júnior, Cléo Quaresma |
| author2 |
Sá, Leonardo Deane Abreu Pach?co, V. B. Souza, Cledenilson Mendonça de |
| author2Str |
Sá, Leonardo Deane Abreu Pach?co, V. B. Souza, Cledenilson Mendonça de |
| title |
Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest |
| title_short |
Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest |
| title_full |
Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest |
| title_fullStr |
Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest |
| title_full_unstemmed |
Coherent structures detected in the unstable atmospheric surface layer above the Amazon forest |
| title_sort |
coherent structures detected in the unstable atmospheric surface layer above the amazon forest |
| publisher |
Journal of Wind Engineering and Industrial Aerodynamics |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17892 |
| _version_ |
1787143360414220288 |
| score |
11.755432 |