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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
03/12/2013 |
Data da última atualização: |
20/10/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
RANDOW, C. von; ZERI, M.; RESTREPO-COUPE, N.; MUZA, M. N.; GONÇALVES, L. G. G. de; COSTA, M. H.; ARAUJO, A. C.; MANZI, A. O.; ROCHA, H. R. da; SALESKA, S. R.; ARAIN, M. A.; BAKER, I. T.; CESTARO, B. P.; CHRISTOFFERSEN, B.; CIAIS, P.; FISHER, J. B.; GALBRAITH, D.; GUAN, X.; HURK, B. van den; ICHII, K.; IMBUZEIRO, H.; JAIN, A.; LEVINE, N.; MIGUEZ-MACHO, G.; POULTER, B.; ROBERTI, D. R.; SAHOO, A.; SCHAEFER, K.; SHI, M.; TIAN, H.; VERBEECK, H.; YANG, Z.-L. |
Afiliação: |
CELSO VON RANDOW, INPE; MARCELO ZERI, INPE; NATALIA RESTREPO-COUPE, University of Technology; MICHEL N. MUZA, Instituto Federal de Santa Catarina; LUIS GUSTAVO G. DE GONÇALVES, INPE; MARCOS H. COSTA, UFV; ALESSANDRO CARIOCA DE ARAUJO, CPATU; ANTONIO O. MANZI, INPA; HUMBERTO R. DA ROCHA, USP; SCOTT R. SALESKA, UNIVERSITY OF ARIZONA; M. ALAF ARAIN, McMaster University; IAN T. BAKER, COLORADO STATE UNIVERSITY; BRUNO P. CESTARO, USP; BRADLEY CHRISTOFFERSEN, University of Arizona; PHILIPPE CIAIS, CEA Orme des Merisiers; JOSHUA B. FISHER, California Institute of Technology; DAVID GALBRAITH, UNIVERSITY OF LEEDS; XIAODAN GUAN, The University of Texas at Austin; BART VAN DEN HURK, Royal Netherlands Meteorological Institute; KAZUHITO ICHII, Fukushima University; HEWLLEY IMBUZEIRO, UFV; ATUL JAIN, University of Illinois at Urbana-Champaign; NAOMI LEVINE, HARVARD UNIVERSITY; GONZALO MIGUEZ-MACHO, University of Santiago de Compostela; BEN POULTER, CEA Orme des Merisiers; DEBORA R. ROBERTI, UFSM; ALOK SAHOO, Princeton University; KEVIN SCHAEFER, University of Colorado at Boulder; MINGJIE SHI, The University of Texas at Austin; HANQIN TIAN, Auburn University; HANS VERBEECK, Ghent University; ZONG-LIANG YANG, The University of Texas at Austin. |
Título: |
Inter-annual variability of carbon and water fluxes in Amazonian forest, Cerrado and pasture sites, as simulated by terrestrial biosphere models. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 182-183, p. 144-155, Dec. 2013. |
DOI: |
http://dx.doi.org/10.1016/j.agrformet.2013.05.015 |
Idioma: |
Inglês |
Conteúdo: |
This study analyzes the inter-annual variability (IAV) of simulations of 21 different land surface model formulations, driven by meteorological conditions measured at 8 flux towers, located in rain forest, forest-savanna ecotone and pasture sites in Amazonia, and one in savanna site in Southeastern Brazil. Annual totals of net ecosystem exchange (NEE) of carbon and evapotranspiration (ET), measured and simulated by each model for each site-year, were compared in terms of year-to-year variability and possible relation to climate drivers. Results have shown that most of models simulations for annual totals of NEE and ET, and IAV of these fluxes, are frequently different from measurements. The average of the model simulations of annual fluxes tend to respond to climatic drivers similarly to the observations, but with noticeable discrepancies. Annual measurements of NEE are negatively correlated to annual rainfall in the forest sites group. Although the ensemble of all models yields a similar result, only three model formulations reproduce a significant negative correlation of simulated NEE with rainfall. For the IAV of ET, tower measurements are controlled by annual variations of radiation and this feature is captured by the ensemble of the models, both at individual sites and when all forest sites are grouped. However, simulated ET values are also significantly correlated to the amount of precipitation in many models and in the model ensemble, while there is no significant correlation in the observations. In general, the surface models are able to reproduce the responses of fluxes to climatic drivers, but improvements are still needed to better capture their inter-annual variability. MenosThis study analyzes the inter-annual variability (IAV) of simulations of 21 different land surface model formulations, driven by meteorological conditions measured at 8 flux towers, located in rain forest, forest-savanna ecotone and pasture sites in Amazonia, and one in savanna site in Southeastern Brazil. Annual totals of net ecosystem exchange (NEE) of carbon and evapotranspiration (ET), measured and simulated by each model for each site-year, were compared in terms of year-to-year variability and possible relation to climate drivers. Results have shown that most of models simulations for annual totals of NEE and ET, and IAV of these fluxes, are frequently different from measurements. The average of the model simulations of annual fluxes tend to respond to climatic drivers similarly to the observations, but with noticeable discrepancies. Annual measurements of NEE are negatively correlated to annual rainfall in the forest sites group. Although the ensemble of all models yields a similar result, only three model formulations reproduce a significant negative correlation of simulated NEE with rainfall. For the IAV of ET, tower measurements are controlled by annual variations of radiation and this feature is captured by the ensemble of the models, both at individual sites and when all forest sites are grouped. However, simulated ET values are also significantly correlated to the amount of precipitation in many models and in the model ensemble, while there is no significant cor... Mostrar Tudo |
Palavras-Chave: |
Fluxo de carbono; Modelagem. |
Thesagro: |
Cerrado; Floresta; Pastagem. |
Thesaurus Nal: |
Amazonia. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 03311naa a2200577 a 4500 001 1972830 005 2022-10-20 008 2013 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1016/j.agrformet.2013.05.015$2DOI 100 1 $aRANDOW, C. von 245 $aInter-annual variability of carbon and water fluxes in Amazonian forest, Cerrado and pasture sites, as simulated by terrestrial biosphere models.$h[electronic resource] 260 $c2013 520 $aThis study analyzes the inter-annual variability (IAV) of simulations of 21 different land surface model formulations, driven by meteorological conditions measured at 8 flux towers, located in rain forest, forest-savanna ecotone and pasture sites in Amazonia, and one in savanna site in Southeastern Brazil. Annual totals of net ecosystem exchange (NEE) of carbon and evapotranspiration (ET), measured and simulated by each model for each site-year, were compared in terms of year-to-year variability and possible relation to climate drivers. Results have shown that most of models simulations for annual totals of NEE and ET, and IAV of these fluxes, are frequently different from measurements. The average of the model simulations of annual fluxes tend to respond to climatic drivers similarly to the observations, but with noticeable discrepancies. Annual measurements of NEE are negatively correlated to annual rainfall in the forest sites group. Although the ensemble of all models yields a similar result, only three model formulations reproduce a significant negative correlation of simulated NEE with rainfall. For the IAV of ET, tower measurements are controlled by annual variations of radiation and this feature is captured by the ensemble of the models, both at individual sites and when all forest sites are grouped. However, simulated ET values are also significantly correlated to the amount of precipitation in many models and in the model ensemble, while there is no significant correlation in the observations. In general, the surface models are able to reproduce the responses of fluxes to climatic drivers, but improvements are still needed to better capture their inter-annual variability. 650 $aAmazonia 650 $aCerrado 650 $aFloresta 650 $aPastagem 653 $aFluxo de carbono 653 $aModelagem 700 1 $aZERI, M. 700 1 $aRESTREPO-COUPE, N. 700 1 $aMUZA, M. N. 700 1 $aGONÇALVES, L. G. G. de 700 1 $aCOSTA, M. H. 700 1 $aARAUJO, A. C. 700 1 $aMANZI, A. O. 700 1 $aROCHA, H. R. da 700 1 $aSALESKA, S. R. 700 1 $aARAIN, M. A. 700 1 $aBAKER, I. T. 700 1 $aCESTARO, B. P. 700 1 $aCHRISTOFFERSEN, B. 700 1 $aCIAIS, P. 700 1 $aFISHER, J. B. 700 1 $aGALBRAITH, D. 700 1 $aGUAN, X. 700 1 $aHURK, B. van den 700 1 $aICHII, K. 700 1 $aIMBUZEIRO, H. 700 1 $aJAIN, A. 700 1 $aLEVINE, N. 700 1 $aMIGUEZ-MACHO, G. 700 1 $aPOULTER, B. 700 1 $aROBERTI, D. R. 700 1 $aSAHOO, A. 700 1 $aSCHAEFER, K. 700 1 $aSHI, M. 700 1 $aTIAN, H. 700 1 $aVERBEECK, H. 700 1 $aYANG, Z.-L. 773 $tAgricultural and Forest Meteorology$gv. 182-183, p. 144-155, Dec. 2013.
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Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
Data corrente: |
19/12/2018 |
Data da última atualização: |
19/12/2018 |
Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
Autoria: |
LEITAO, R. C.; VASCONCELOS, E. A. F.; VIANA, M. B.; VALE, M. S.; MEDERO, R. I. D.; PINHEIRO, G. C.; FREITAS, I. B. F.; DANTAS, L. P.; NUNES, V. F.; SANTAELLA, S. T. |
Afiliação: |
RENATO CARRHA LEITAO, CNPAT; Eduardo Augusto Felipe de Vasconcelos, Universidade Estadual do Ceará - UECE; Michael Barbosa Viana, Universidade Federal do Ceará - UFC; Maria do Socorro Vale, Universidade Federal do Ceará - UFC; Rosemeri Ines Dams Medero, Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico - FUNCAP; Gleycielle Cavalcante Pinheiro, Instituto Federal de Educação, Ciência e Tecnologia do Ceará - IFCE; Isabele Baima Ferreira Freitas, Universidade Federal do Ceará - UFC; Leonardo Pestana Dantas, Instituto Federal de Educação, Ciência e Tecnologia do Ceará - IFCE; Vanja Fontenele Nunes, Universidade Federal do Ceará - UFC; Sandra Tédde Santaella, Universidade Federal do Ceará - UFC. |
Título: |
Produção de hidrogênio e metano a partir de glicerol oriundo de biodiesel. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Fortaleza: Embrapa Agroindústria Tropical, 2018. |
Páginas: |
41 p. |
Série: |
(Embrapa Agroindústria Tropical. Boletim de Pesquisa e Desenvolvimento, 180). |
Idioma: |
Português |
Conteúdo: |
O glicerol oriundo da produção de biodiesel é uma fonte renovável de carbono para produzir energia via digestão anaeróbia. O objetivo deste trabalho foi maximizar a geração de energia por meio da produção de hidrogênio e metano a partir de glicerol residual proveniente da indústria de biodiesel. Utilizaram-se dois reatores UASB, em escala de laboratório, sendo um hidrogenogênico e outro metanogênico. |
Thesagro: |
Biocombustível; Biogás; Digestão Anaeróbia; Glicerina. |
Thesaurus NAL: |
Anaerobic digestion; Biofuels. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189013/1/BPD18032.pdf
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Marc: |
LEADER 01352nam a2200313 a 4500 001 2102061 005 2018-12-19 008 2018 bl uuuu u0uu1 u #d 100 1 $aLEITAO, R. C. 245 $aProdução de hidrogênio e metano a partir de glicerol oriundo de biodiesel.$h[electronic resource] 260 $aFortaleza: Embrapa Agroindústria Tropical$c2018 300 $a41 p. 490 $a(Embrapa Agroindústria Tropical. Boletim de Pesquisa e Desenvolvimento, 180). 520 $aO glicerol oriundo da produção de biodiesel é uma fonte renovável de carbono para produzir energia via digestão anaeróbia. O objetivo deste trabalho foi maximizar a geração de energia por meio da produção de hidrogênio e metano a partir de glicerol residual proveniente da indústria de biodiesel. Utilizaram-se dois reatores UASB, em escala de laboratório, sendo um hidrogenogênico e outro metanogênico. 650 $aAnaerobic digestion 650 $aBiofuels 650 $aBiocombustível 650 $aBiogás 650 $aDigestão Anaeróbia 650 $aGlicerina 700 1 $aVASCONCELOS, E. A. F. 700 1 $aVIANA, M. B. 700 1 $aVALE, M. S. 700 1 $aMEDERO, R. I. D. 700 1 $aPINHEIRO, G. C. 700 1 $aFREITAS, I. B. F. 700 1 $aDANTAS, L. P. 700 1 $aNUNES, V. F. 700 1 $aSANTAELLA, S. T.
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