|
|
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
18/05/2018 |
Data da última atualização: |
20/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
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. |
Afiliação: |
Pablo E. S. Oliveira, UFSM; Otávio C. Acevedo, UFSM; Matthias Sörgel, Max Planck Institute for Chemistry; Anywhere Tsokankunku, Max Planck Institute for Chemistry; Stefan Wolff, Max Planck Institute for Chemistry; ALESSANDRO CARIOCA DE ARAUJO, CPATU; Rodrigo A. F. Souza, UEA; Marta O. Sá, INPA; Antônio O. Manzi, INPA; Meinrat O. Andreae, Max Planck Institute for Chemistry. |
Título: |
Nighttime wind and scalar variability within and above an Amazonian canopy. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Atmospheric Chemistry and Physics, v. 18, n. 5, p. 3083-3099, 2018. |
DOI: |
10.5194/acp-18-3083-2018 |
Idioma: |
Inglês |
Conteúdo: |
Nocturnal turbulent kinetic energy (TKE) and fluxes of energy, CO2 and O3 between the Amazon forest and the atmosphere are evaluated for a 20-day campaign at the Amazon Tall Tower Observatory (ATTO) site. The distinction of these quantities between fully turbulent (weakly stable) and intermittent (very stable) nights is discussed. Spectral analysis indicates that low-frequency, nonturbulent fluctuations are responsible for a large portion of the variability observed on intermittent nights. In these conditions, the low-frequency exchange may dominate over the turbulent transfer. In particular, we show that within the canopy most of the exchange of CO2 and H2O happens on temporal scales longer than 100 s. At 80 m, on the other hand, the turbulent fluxes are almost absent in such very stable conditions, suggesting a boundary layer shallower than 80 m. The relationship between TKE and mean winds shows that the stable boundary layer switches from the very stable to the weakly stable regime during intermittent bursts of turbulence. In general, fluxes estimated with long temporal windows that account for low-frequency effects are more dependent on the stability over a deeper layer above the forest than they are on the stability between the top of the canopy and its interior, suggesting that low-frequency processes are controlled over a deeper layer above the forest. |
Palavras-Chave: |
Energia cinética turbulenta; TKE. |
Thesagro: |
Dióxido de Carbono; Vento. |
Thesaurus Nal: |
Amazonia. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/177153/1/Oliveira-ACP-2018.pdf
|
Marc: |
LEADER 02255naa a2200301 a 4500 001 2091667 005 2022-05-20 008 2018 bl uuuu u00u1 u #d 024 7 $a10.5194/acp-18-3083-2018$2DOI 100 1 $aOLVEIRA, P. E. S. 245 $aNighttime wind and scalar variability within and above an Amazonian canopy.$h[electronic resource] 260 $c2018 520 $aNocturnal turbulent kinetic energy (TKE) and fluxes of energy, CO2 and O3 between the Amazon forest and the atmosphere are evaluated for a 20-day campaign at the Amazon Tall Tower Observatory (ATTO) site. The distinction of these quantities between fully turbulent (weakly stable) and intermittent (very stable) nights is discussed. Spectral analysis indicates that low-frequency, nonturbulent fluctuations are responsible for a large portion of the variability observed on intermittent nights. In these conditions, the low-frequency exchange may dominate over the turbulent transfer. In particular, we show that within the canopy most of the exchange of CO2 and H2O happens on temporal scales longer than 100 s. At 80 m, on the other hand, the turbulent fluxes are almost absent in such very stable conditions, suggesting a boundary layer shallower than 80 m. The relationship between TKE and mean winds shows that the stable boundary layer switches from the very stable to the weakly stable regime during intermittent bursts of turbulence. In general, fluxes estimated with long temporal windows that account for low-frequency effects are more dependent on the stability over a deeper layer above the forest than they are on the stability between the top of the canopy and its interior, suggesting that low-frequency processes are controlled over a deeper layer above the forest. 650 $aAmazonia 650 $aDióxido de Carbono 650 $aVento 653 $aEnergia cinética turbulenta 653 $aTKE 700 1 $aACEVEDO, O. C. 700 1 $aSÖRGEL, M. 700 1 $aTSOKANKUNKU, A. 700 1 $aWOLFF, S. 700 1 $aARAUJO, A. C. de 700 1 $aSOUZA, R. A. F. 700 1 $aSÁ, M. O. 700 1 $aMANZI, A. O. 700 1 $aANDREAE, M. O. 773 $tAtmospheric Chemistry and Physics$gv. 18, n. 5, p. 3083-3099, 2018.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
27/11/2001 |
Data da última atualização: |
27/11/2001 |
Autoria: |
SILVA, J. B. C.; DUSI, A. N. |
Afiliação: |
EMBRAPA-CNPH, Brasília, DF. |
Título: |
Detecção de vírus na coleção de batata-doce da Embrapa Hortaliças. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
In: SIMPÓSIO DE RECURSOS GENÉTICOS PARA A AMÉRICA LATINA E CARIBE, 3., 2001, Londrina. Anais... Londrina: IAPAR, 2001. |
Volume: |
p. 432-433. |
Idioma: |
Português |
Palavras-Chave: |
BAG; Batata-doce; Brasil; Brasília; Detecção; Diseases; Distrito Federal; Embrapa Hortaliças; Embrapa Vegetables; Gene bank; Germplasm collection. |
Thesagro: |
Banco de Germoplasma; Cerrado; Doença; Ipomoea Batatas; Vírus. |
Thesaurus NAL: |
Brazil; detection; sweet potatoes. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01024naa a2200373 a 4500 001 1770912 005 2001-11-27 008 2001 bl uuuu u00u1 u #d 100 1 $aSILVA, J. B. C. 245 $aDetecção de vírus na coleção de batata-doce da Embrapa Hortaliças. 260 $c2001 300 $ap. 432-433. 490 $vp. 432-433. 650 $aBrazil 650 $adetection 650 $asweet potatoes 650 $aBanco de Germoplasma 650 $aCerrado 650 $aDoença 650 $aIpomoea Batatas 650 $aVírus 653 $aBAG 653 $aBatata-doce 653 $aBrasil 653 $aBrasília 653 $aDetecção 653 $aDiseases 653 $aDistrito Federal 653 $aEmbrapa Hortaliças 653 $aEmbrapa Vegetables 653 $aGene bank 653 $aGermplasm collection 700 1 $aDUSI, A. N. 773 $tIn: SIMPÓSIO DE RECURSOS GENÉTICOS PARA A AMÉRICA LATINA E CARIBE, 3., 2001, Londrina. Anais... Londrina: IAPAR, 2001.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Hortaliças (CNPH) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|