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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
04/11/2016 |
Data da última atualização: |
20/05/2022 |
Autoria: |
ZAHN, E.; DIAS, N. L.; ARAUJO, A.; SÁ, L.; SÖRGEL, M.; TREBS, I.; WOLFF, S.; MANZI, A. |
Afiliação: |
EINARA ZAHN, UFPR; NELSON L. DIAS, UFPR; ALESSANDRO CARIOCA DE ARAUJO, CPATU; LEONARDO SÁ, INPE; MATTHIAS SÖERGE, Max Planck Institute for Chemistry; IVONNE TREBS, ERIN; STEFAN WOLFF, Max Planck Institute for Chemistry; ANTÔNIO MANZI, INPA. |
Título: |
Scalar turbulent behavior in the roughness sublayer of an Amazonian forest. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Atmospheric Chemistry and Physics Discussions, 18 Jan. 2016. |
DOI: |
10.5194/acp-2015-1043 |
Idioma: |
Português |
Conteúdo: |
An important current problem in micrometeorology is the characterization of turbulence in the roughness sublayer (RSL), where most of the measurements above tall forests are made. There, scalar turbulent fluctuations display significant departures from the predictions of Monin?Obukhov similarity theory (MOST). In this work, we analyze turbulence data of virtual temperature, carbon dioxide, and water vapor in the RSL above an Amazonian forest (with a canopy height of 40?m), measured at 39.4 and 81.6?m above the ground under unstable conditions. We found that dimensionless statistics related to the rate of dissipation of turbulence kinetic energy (TKE) and the scalar variance display significant departures from MOST as expected, whereas the vertical velocity variance follows MOST much more closely. Much better agreement between the dimensionless statistics with the Obukhov similarity variable, however, was found for the subset of measurements made at a low zenith angle Z, in the range 0°???|Z|???20°. We conjecture that this improvement is due to the relationship between sunlight incidence and the ?activation?deactivation? of scalar sinks and sources vertically distributed in the forest. Finally, we evaluated the relaxation coefficient of relaxed eddy accumulation: it is also affected by zenith angle, with considerable improvement in the range 0°???|Z|???20°, and its values fall within the range reported in the literature for the unstable surface layer. In general, our results indicate the possibility of better stability-derived flux estimates for low zenith angle ranges. MenosAn important current problem in micrometeorology is the characterization of turbulence in the roughness sublayer (RSL), where most of the measurements above tall forests are made. There, scalar turbulent fluctuations display significant departures from the predictions of Monin?Obukhov similarity theory (MOST). In this work, we analyze turbulence data of virtual temperature, carbon dioxide, and water vapor in the RSL above an Amazonian forest (with a canopy height of 40?m), measured at 39.4 and 81.6?m above the ground under unstable conditions. We found that dimensionless statistics related to the rate of dissipation of turbulence kinetic energy (TKE) and the scalar variance display significant departures from MOST as expected, whereas the vertical velocity variance follows MOST much more closely. Much better agreement between the dimensionless statistics with the Obukhov similarity variable, however, was found for the subset of measurements made at a low zenith angle Z, in the range 0°???|Z|???20°. We conjecture that this improvement is due to the relationship between sunlight incidence and the ?activation?deactivation? of scalar sinks and sources vertically distributed in the forest. Finally, we evaluated the relaxation coefficient of relaxed eddy accumulation: it is also affected by zenith angle, with considerable improvement in the range 0°???|Z|???20°, and its values fall within the range reported in the literature for the unstable surface layer. In general, our ... Mostrar Tudo |
Thesagro: |
Climatologia; Floresta Tropical. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/149608/1/acp-2015-1043.pdf
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Marc: |
LEADER 02283naa a2200241 a 4500 001 2055916 005 2022-05-20 008 2016 bl uuuu u00u1 u #d 024 7 $a10.5194/acp-2015-1043$2DOI 100 1 $aZAHN, E. 245 $aScalar turbulent behavior in the roughness sublayer of an Amazonian forest.$h[electronic resource] 260 $c2016 520 $aAn important current problem in micrometeorology is the characterization of turbulence in the roughness sublayer (RSL), where most of the measurements above tall forests are made. There, scalar turbulent fluctuations display significant departures from the predictions of Monin?Obukhov similarity theory (MOST). In this work, we analyze turbulence data of virtual temperature, carbon dioxide, and water vapor in the RSL above an Amazonian forest (with a canopy height of 40?m), measured at 39.4 and 81.6?m above the ground under unstable conditions. We found that dimensionless statistics related to the rate of dissipation of turbulence kinetic energy (TKE) and the scalar variance display significant departures from MOST as expected, whereas the vertical velocity variance follows MOST much more closely. Much better agreement between the dimensionless statistics with the Obukhov similarity variable, however, was found for the subset of measurements made at a low zenith angle Z, in the range 0°??<??|Z|??<??20°. We conjecture that this improvement is due to the relationship between sunlight incidence and the ?activation?deactivation? of scalar sinks and sources vertically distributed in the forest. Finally, we evaluated the relaxation coefficient of relaxed eddy accumulation: it is also affected by zenith angle, with considerable improvement in the range 0°??<??|Z|??<??20°, and its values fall within the range reported in the literature for the unstable surface layer. In general, our results indicate the possibility of better stability-derived flux estimates for low zenith angle ranges. 650 $aClimatologia 650 $aFloresta Tropical 700 1 $aDIAS, N. L. 700 1 $aARAUJO, A. 700 1 $aSÁ, L. 700 1 $aSÖRGEL, M. 700 1 $aTREBS, I. 700 1 $aWOLFF, S. 700 1 $aMANZI, A. 773 $tAtmospheric Chemistry and Physics Discussions, 18 Jan. 2016.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registros recuperados : 32 | |
1. | | OLIVEIRA, B. C. S. de; ARAUJO, A. C. de; OLIVEIRA, L. R. de; MANZI, A. O. Caracterização da variação diária e sazonal do CO2 atmosférico em cultivo da palma de óleo com híbridos interespecíficos (Elaeis guineensis X Elaeis oleifera) no leste da Amazônia. In: WORKSHOP BRASILEIRO DE MICROMETEOROLOGIA, 9., 2015, Santa Maria, RS. Anais. Santa Maria, RS: UFSM, 2015.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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3. | | OLIVEIRA, M. B. L.; SANTOS, A.; MANZI, A. O.; CORREIA, M. de F.; MOURA, M. S. B. de. Análises das trocas de energia, radiação e de carbono no semi-árido nordestino. In: CONGRESSO ARGENTINO DE METEOROLOGIA, 9., 2005, Buenos Aires. Tempo, clima, água y desarrollo sostenible: [annales]. Buenos Aires: Centro Argentino de Meteorólogos, 2005. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Semiárido. |
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4. | | FITZJARRALD, D. R.; MOORE, K. E.; CABRAL, O. M. R.; SCOLAR, J.; MANZI, A. O.; SÁ, L. D. de A. Daytime turbulent exchange between the Amazon forest and the atmosphere. Journal of Geophysical Research, v. 95, n. D10, p. 16825-16838, 1990.Tipo: Artigo em Periódico Indexado |
Biblioteca(s): Embrapa Amazônia Ocidental. |
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5. | | ZAHN, E.; DIAS, N. L.; ARAUJO, A.; SÁ, L. D. A.; SÖRGEL, M.; TREBS, I.; WOLFF, S.; MANZI, A. Scalar turbulent behavior in the roughness sublayer of an Amazonian forest. Atmospheric Chemistry and Physics, v. 16, p. 11349-11366, 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Amazônia Oriental. |
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8. | | ASSUNÇÃO, L. M. F. de; MANZI, A. O.; HIGUCHI, N.; CANDIDO, L. A.; RANDOW, C. von; KUBOTA, P.; ARAUJO, A.; AMARAL, I.; LUIZÃO, F. Aplicação do modelo de vegetação dinâmica IBIS às condições de floresta de terra firme na região central da Amazônia. In: CONGRESSO BRASILEIRO DE METEOROLOGIA, 17.; ENCONTRO DE METEOROLOGIA DOS PAÍSES DO MERCOSUL E ASSOCIADOS, 1.; ENCONTRO SUL AMERICANO DE APLICAÇÕES DO SISTEMA EUMETCast PARA O MONITORAMENTO METEOROLÓGICO E AMBIENTAL, 4.; ENCONTRO DE METEOROLOGIA OPERACIONAL, 2., 2012, Gramado. Anais... Gramado: UFRGS, 2012.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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10. | | CHOR, T. L.; DIAS, N. L.; ARAUJO, A. C. de; WOLFF, S.; ZAHN, E.; MANZI, A.; TREBS, I.; SÁ, M. O.; TEIXEIRA, P. R.; SÖRGEL, M. Flux-variance and flux-gradient relationships in the roughnesssublayer over the Amazon forest. Agricultural and Forest Meteorology, v. 239, p. 213-222, May 2017.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Amazônia Oriental. |
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11. | | CAVA, D.; MORTARINI, L.; DIAS JÚNIOR, C. Q.; BRONDANI, D.; ACEVEDO, O.; OLIVEIRA, P.; GIOSTRA, U.; MANZI, A. O.; ARAUJO, A. C. de; TSOKANKUNKU, A.; SÖRGEL, M. Impact of Atmospheric Stability on Vertical Propagation of Submeso and Coherent Structure in a Dense Amazon Forest. In: EGU GENERAL ASSEMBLY, 2022, Viena. Programme. [S.l.]: EGU, 2022.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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12. | | NELSON, B.; TAVARES, J.; WU, J.; VALERIANO, D.; LOPES, A.; MAROSTICA, S.; MARTINS, G.; PROHASKA, N.; ALBERT, L.; ARAUJO, A. de; MANZI, A.; SALESKA, S.; HUETE, A. Seasonality of Central Amazon Forest Leaf Flush Using Tower-Mounted RGB Camera. In: AGU FALL MEETING, 2014, San Francisco. [Proceedings]. [San Francisco]: AGU, 2014.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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13. | | OLIVEIRA, M. B. L. de; SANTOS, A. J. B.; MANZI, A. O.; ALVALÁ, R. C. dos S.; CORREIA, M. de F.; MOURA, M. S. B. de. Trocas de energia e fluxo de carbono entre a vegetação de caatinga e atmosfera no Nordeste brasileiro. Revista Brasileira de Meteorologia, v. 21, n. 3b, p. 378-386, 2006.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Embrapa Semiárido. |
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14. | | ZERI, M.; SÁ, L. D. A.; MANZI, A. O.; ARAUJO, A. C.; AGUIAR, R. G.; RANDOW, C. von; SAMPAIO, G.; CARDOSO, F. L.; NOBRE, C. A. Variability of carbon and water fluxes following climate extremes over a tropical forest in Southwestern Amazonia. Plos One, v. 9, n. 2, e88130, Feb. 2014.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Amazônia Oriental. |
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15. | | FARIAS, S. E. M. de; MEIRELLES, M. L.; GUERRA, A. F.; NOGUEIRA, J. L.; FRANCO, A. C.; MANZI, A. O. ALVALA, R. C. dos S.; SA, L. D. de A. Balanco de energia em uma cultura de milho (Zea mays) no cerrado pela tecnica de correlacao de vortices. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 12.; REUNIAO LATINO-AMERICANA DE AGROMETEOROLOGIA, 3., 2001, Fortaleza. Agua e agrometeorologia no Novo Milenio: anais. Fortaleza: Sociedade Brasileira de Agrometeorologia: Fundacao Cearense de Meteorologia e Recursos Hidricos, 2001. p. 693-694.Biblioteca(s): Embrapa Cerrados. |
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16. | | ALVALÁ, R. C. S.; GIELOW, R.; ROCHA, H. R. da; FREITAS, H. C.; LOPES, J. M.; MANZI, A. O.; RANDOW, C. von; DIAS, M. A. F. S.; CABRAL, O. M. R.; WATERLOO, M. J. Intradiurnal and seasonal variability of soil temperature, heat flux, soil moisture content, and thermal properties under forest and pasture in Rondônia. Journal of Geophysical Research, Washington, v. 107, n. D20, p. LBA10-1 - LBA 10-20, 2002.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Meio Ambiente. |
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17. | | QUERINO, C. A. S.; SMEETS, C. J. P. P.; VIGANO, I.; HOLZINGER, R.; MOURA, V.; GATTI, L. V.; MARTINEWSKI, A.; MANZI, A. O.; ARAUJO, A. C. de; RÖCKMANN, T. Methane flux, vertical gradient and mixing ratio measurements in a tropical forest. Atmospheric Chemistry and Physics Discussions, v. 11, p. 5313-5350, Feb. 2011.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Amazônia Oriental. |
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18. | | ROCHA, H. R. da; GOULDEN, M.; MILLER, S.; MANZI, A. O.; CABRAL, O. M. R.; FREITAS, H. C. de; NOBRE, A.; SALESKA, S.; WOFSY, S.; KRUIJT, B.; RANDOW, C. VON. Patterns of CO2 and water fluxes measured by flux towers across tropical forest, ecotone and savanna ecosystems in Brazil. In: INTEGRATED LAND ECOSYSTEM - ATMOSPHERE PROCESSES STUDY, 1., 2006, Colorado, USA. Proceedings... Colorado, USA: Finnish Association for Aerosol Research, 2006. p. 215. (Report Series in Aerosol Science, n. 76). Editors: Anni Reissell, Asbjorn Aarflot.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Meio Ambiente. |
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19. | | OLVEIRA, P. E. S.; ACEVEDO, O. C.; SÖRGEL, M.; TSOKANKUNKU, A.; WOLFF, S.; ARAUJO, A. C. de; SOUZA, R. A. F.; SÁ, M. O.; MANZI, A. O.; ANDREAE, M. O. Nighttime wind and scalar variability within and above an Amazonian canopy. Atmospheric Chemistry and Physics, v. 18, n. 5, p. 3083-3099, 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Amazônia Oriental. |
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20. | | SERRA-NETO, E. M.; MARTINS, H. S.; DIAS-JUNIOR, C. Q.; SANTANA, R. A.; BRONDANI, D. V.; MANZI, A. O.; ARAUJO, A. C. de; TEIXEIRA, P. R.; SÖRGEL, M.; MORTARINI, L. Simulation of the scalar transport above and within the Amazon Forest Canopy. Atmosphere, v. 12, n. 12, Article 1631, 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Amazônia Oriental. |
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Registros recuperados : 32 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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