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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
19/09/2008 |
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Data da última atualização: |
24/05/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
TEIXEIRA, J. M. A.; SILVA, U. C.; NEVES, A. A. O.; ADELÁRIO, F. M. S.; MARRIEL, I. E. |
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Afiliação: |
Jaqueline M. A. Teixeira, Centro Universitário de Sete Lagoas; Ubiana C. Silva, Centro Universitário de Sete Lagoas; Amanda A. O. Neves, Embrapa Milho e Sorgo/McKnight; Fernanda M. S. Adelário, CNPq; IVANILDO EVODIO MARRIEL, CNPMS. |
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Título: |
Atividade da arginase e concentração de carbono orgânico lábil em solo de cerrado sob diferentes sistemas de manejo. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 27.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 3.; WORKSHOP SOBRE MANEJO E ETIOLOGIA DA MANCHA BRANCA DO MILHO, 2008, Londrina. Agroenergia, produção de alimentos e mudanças climáticas: desafios para milho e sorgo: trabalhos e palestras. [Londrina]: IAPAR; [Sete Lagoas]: Embrapa Milho e Sorgo, 2008. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Emissão de CO2; Qualidade do solo; Sistemas agrícolas. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30117/1/Atividade-arginase.pdf
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Marc: |
LEADER 00964nam a2200193 a 4500
001 1491282
005 2018-05-24
008 2008 bl uuuu u00u1 u #d
100 1 $aTEIXEIRA, J. M. A.
245 $aAtividade da arginase e concentração de carbono orgânico lábil em solo de cerrado sob diferentes sistemas de manejo.$h[electronic resource]
260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 27.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 3.; WORKSHOP SOBRE MANEJO E ETIOLOGIA DA MANCHA BRANCA DO MILHO, 2008, Londrina. Agroenergia, produção de alimentos e mudanças climáticas: desafios para milho e sorgo: trabalhos e palestras. [Londrina]: IAPAR; [Sete Lagoas]: Embrapa Milho e Sorgo$c2008
300 $c1 CD-ROM.
653 $aEmissão de CO2
653 $aQualidade do solo
653 $aSistemas agrícolas
700 1 $aSILVA, U. C.
700 1 $aNEVES, A. A. O.
700 1 $aADELÁRIO, F. M. S.
700 1 $aMARRIEL, I. E.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
20/09/2016 |
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Data da última atualização: |
19/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ZAHN, E.; DIAS, N. L.; ARAUJO, A.; SÁ, L. D. A.; SÖRGEL, M.; TREBS, I.; WOLFF, S.; MANZI, A. |
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Afiliação: |
Einara Zahn, Graduate Program in Environmental Engineering (PPGEA), UFPR; Nelson L. Dias, UFPR; ALESSANDRO CARIOCA DE ARAUJO, CPATU; Leonardo D. A. Sá, INPE; Matthias Sörgel, Max Planck Institute for Chemistry; Ivonne Trebs, Environmental Research and Innovation (ERIN); Stefan Wolff, Max Planck Institute for Chemistry; Antônio Manzi, INPE. |
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Título: |
Scalar turbulent behavior in the roughness sublayer of an Amazonian forest. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Atmospheric Chemistry and Physics, v. 16, p. 11349-11366, 2016. |
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DOI: |
10.5194/acp-16-11349-2016 |
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Idioma: |
Inglês |
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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 ... Mostrar Tudo |
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Thesagro: |
Climatologia; Floresta Tropical. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147628/1/acp-16-11349-2016.pdf
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Marc: |
LEADER 02404naa a2200241 a 4500
001 2053165
005 2022-05-19
008 2016 bl uuuu u00u1 u #d
024 7 $a10.5194/acp-16-11349-2016$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. D. A.
700 1 $aSÖRGEL, M.
700 1 $aTREBS, I.
700 1 $aWOLFF, S.
700 1 $aMANZI, A.
773 $tAtmospheric Chemistry and Physics$gv. 16, p. 11349-11366, 2016.
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Embrapa Amazônia Oriental (CPATU) |
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