|
|
Registro Completo |
Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Pantanal. |
Data corrente: |
17/08/1993 |
Data da última atualização: |
18/07/2007 |
Autoria: |
COMASTRI, J. A.; CARVALHO, C. A. B. de. |
Título: |
Estradas: traçado geométrico. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
Viçosa: UFV, 1981. |
Páginas: |
71p.il. |
Idioma: |
Português |
Conteúdo: |
Introducao; Classificacao; Aderencia e resistencia ao movimento dos veiculos rodoviarios; Aderencia e resistencia ao movimento de veiculos ferroviarios; Forca de tracao; Caracteristicas geometricas das estradas de ferro e rodagem; Eixo da estrada; Elementos planimetricos; Elementos altimetricos; Secoes transversais; Concordancia horizontal com curva circular simples; Estudo da superelevacao, raio minimo e tangente minima (caso rodoviario); Estudo da superelevacao, raio minimo e tangente minima (caso ferroviario); Superlargura (caso das rodovias); Superlargura (caso ferroviario); Principais acidentes geograficos; Generalidades; Principios de Brisson; Principio de Boulanger; Trabalhos destinados ao tracado de uma estrada; Reconhecimento; Instrumentos utilizados nos trabalhos de exploracao; Tipos de cadernetas usuais nos trabalhos de exploracao; Constituicao de uma equipe de exploracao. |
Palavras-Chave: |
Construcao; Construction; Estrada; Road. |
Thesagro: |
Engenharia. |
Thesaurus Nal: |
engineering. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01368nam a2200205 a 4500 001 1255875 005 2007-07-18 008 1981 bl uuuu 00u1 u #d 100 1 $aCOMASTRI, J. A. 245 $aEstradas$btraçado geométrico. 260 $aViçosa: UFV$c1981 300 $a71p.il. 520 $aIntroducao; Classificacao; Aderencia e resistencia ao movimento dos veiculos rodoviarios; Aderencia e resistencia ao movimento de veiculos ferroviarios; Forca de tracao; Caracteristicas geometricas das estradas de ferro e rodagem; Eixo da estrada; Elementos planimetricos; Elementos altimetricos; Secoes transversais; Concordancia horizontal com curva circular simples; Estudo da superelevacao, raio minimo e tangente minima (caso rodoviario); Estudo da superelevacao, raio minimo e tangente minima (caso ferroviario); Superlargura (caso das rodovias); Superlargura (caso ferroviario); Principais acidentes geograficos; Generalidades; Principios de Brisson; Principio de Boulanger; Trabalhos destinados ao tracado de uma estrada; Reconhecimento; Instrumentos utilizados nos trabalhos de exploracao; Tipos de cadernetas usuais nos trabalhos de exploracao; Constituicao de uma equipe de exploracao. 650 $aengineering 650 $aEngenharia 653 $aConstrucao 653 $aConstruction 653 $aEstrada 653 $aRoad 700 1 $aCARVALHO, C. A. B. de
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente; Embrapa Semiárido. |
Data corrente: |
23/12/2021 |
Data da última atualização: |
15/03/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MELO, D. de C. D.; ANACHE, J. A. A.; BORGES, V. P.; GONZALEZ MIRALLES, D.; MARTENS, B.; FISHER, J. B.; NÓBREGA, R. L. B.; MORENO, Á.; CABRAL, O. M. R.; RODRIGUES, T. R.; BEZERRA, B.; SILVA, C. M. S. e; MEIRA NETO, A. A.; MOURA, M. S. B. de; MARQUES, T. V.; CAMPOS, S.; NOGUEIRA, J. de S.; ROSOLEM, R.; SOUZA, R. M. S.; ANTONINO, A. C. D.; HOLL, D.; GALLEGUILLOS, M.; PEREZ-QUEZADA, J.; VERHOEF, A.; KUTZBACH, L.; LIMA, J. R. de S.; SOUZA, E. S. de; GASSMANN, M. I.; PÉREZ, C. F.; TONTI, N. E.; POSSE, G.; RAINS, D.; OLIVEIRA, P. T.; WENDLAND, E. |
Afiliação: |
DAVI DE CARVALHO DINIZ MELO, UFPB; JAMIL ALEXANDRE AYACH ANACHE, UFMS; VALÉRIA PEIXOTO BORGES, UFPB; DIEGO GONZALEZ MIRALLES, Ghent University; BRECHT MARTENS, Ghent University; JOSHUA B FISHER, Chapman University; RODOLFO LUIZ BEZERRA NÓBREGA, Imperial Coolege London; ÁLVARO MORENO MARTÍNEZ, University of Montana; OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; THIAGO RANGEL RODRIGUES, UFMS; BERGSON BEZERRA, UFRN; CLÁUDIO MOISÉS SANTOS E SILVA, UFRN; ANTONIO ALVES MEIRA NETO, University of Arizona; MAGNA SOELMA BESERRA DE MOURA, CPATSA; THIAGO VALENTIM MARQUES, UFRN; SUANY CAMPOS, UFRN; JOSE DE SOUZA NOGUEIRA, UFMS; RAFAEL ROSOLEM, University of Bristol; RODOLFO M S SOUZA, Texas A&M University; ANTONIO CELSO DANTAS ANTONINO, UFPE; DAVID HOLL, Universität Hamburg; MAURICIO GALLEGUILLOS, Universidad de Chile; JORGE PEREZ-QUEZADA, Universidad de Chile; ANNE VERHOEF, University of Reading; LARS KUTZBACH, Universität Hamburg; JOSÉ ROMUALDO DE SOUSA LIMA, UFAPE; EDUARDO SOARES DE SOUZA, UFRPE; MARÍA ISABEL GASSMANN, Universidad de Buenos Aires; CLAUDIO F PÉREZ, CONICET; NATALIA EDITH TONTI, Universisidad de Buenos Aires; GABRIELA POSSE, INTA; DOMINIK RAINS, Ghent University; PAULO TARSO OLIVEIRA, UFMS; EDSON WENDLAND, EESC-USP. |
Título: |
Are remote sensing evapotranspiration models reliable across South American ecoregions? |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Water Resources Research, v. 57, n. 11, e2020WR028752, 2021. |
ISSN: |
0043-1397 |
DOI: |
https://doi.org/10.1029/2020WR028752 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Many remote sensing-based evapotranspiration (RSBET) algorithms have been proposed in the past decades and evaluated using flux tower data, mainly over North America and Europe. Model evaluation across South America has been done locally or using only a single algorithm at a time. Here, we provide the first evaluation of multiple RSBET models, at a daily scale, across a wide variety of biomes, climate zones, and land uses in South America. We used meteorological data from 25 flux towers to force four RSBET models: Priestley-Taylor Jet Propulsion Laboratory (PT-JPL), Global Land Evaporation Amsterdam Model (GLEAM), Penman-Monteith Mu model (PM-MOD), and Penman-Monteith Nagler model (PM-VI). was predicted satisfactorily by all four models, with correlations consistently higher () for GLEAM and PT-JPL, and PM-MOD and PM-VI presenting overall better responses in terms of percent bias (%). As for PM-VI, this outcome is expected, given that the model requires calibration with local data. Model skill seems to be unrelated to land-use but instead presented some dependency on biome and climate, with the models producing the best results for wet to moderately wet environments. Our findings show the suitability of individual models for a number of combinations of land cover types, biomes, and climates. At the same time, no model outperformed the others for all conditions, which emphasizes the need for adapting individual algorithms to take into account intrinsic characteristics of climates and ecosystems in South America. MenosAbstract: Many remote sensing-based evapotranspiration (RSBET) algorithms have been proposed in the past decades and evaluated using flux tower data, mainly over North America and Europe. Model evaluation across South America has been done locally or using only a single algorithm at a time. Here, we provide the first evaluation of multiple RSBET models, at a daily scale, across a wide variety of biomes, climate zones, and land uses in South America. We used meteorological data from 25 flux towers to force four RSBET models: Priestley-Taylor Jet Propulsion Laboratory (PT-JPL), Global Land Evaporation Amsterdam Model (GLEAM), Penman-Monteith Mu model (PM-MOD), and Penman-Monteith Nagler model (PM-VI). was predicted satisfactorily by all four models, with correlations consistently higher () for GLEAM and PT-JPL, and PM-MOD and PM-VI presenting overall better responses in terms of percent bias (%). As for PM-VI, this outcome is expected, given that the model requires calibration with local data. Model skill seems to be unrelated to land-use but instead presented some dependency on biome and climate, with the models producing the best results for wet to moderately wet environments. Our findings show the suitability of individual models for a number of combinations of land cover types, biomes, and climates. At the same time, no model outperformed the others for all conditions, which emphasizes the need for adapting individual algorithms to take into account intrinsic characteristi... Mostrar Tudo |
Thesagro: |
Evapotranspiração; Modelo de Simulação; Sensoriamento Remoto. |
Thesaurus NAL: |
Climate models; Evapotranspiration; Mathematical models; Remote sensing. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03298naa a2200625 a 4500 001 2138344 005 2022-03-15 008 2021 bl uuuu u00u1 u #d 022 $a0043-1397 024 7 $ahttps://doi.org/10.1029/2020WR028752$2DOI 100 1 $aMELO, D. de C. D. 245 $aAre remote sensing evapotranspiration models reliable across South American ecoregions?$h[electronic resource] 260 $c2021 520 $aAbstract: Many remote sensing-based evapotranspiration (RSBET) algorithms have been proposed in the past decades and evaluated using flux tower data, mainly over North America and Europe. Model evaluation across South America has been done locally or using only a single algorithm at a time. Here, we provide the first evaluation of multiple RSBET models, at a daily scale, across a wide variety of biomes, climate zones, and land uses in South America. We used meteorological data from 25 flux towers to force four RSBET models: Priestley-Taylor Jet Propulsion Laboratory (PT-JPL), Global Land Evaporation Amsterdam Model (GLEAM), Penman-Monteith Mu model (PM-MOD), and Penman-Monteith Nagler model (PM-VI). was predicted satisfactorily by all four models, with correlations consistently higher () for GLEAM and PT-JPL, and PM-MOD and PM-VI presenting overall better responses in terms of percent bias (%). As for PM-VI, this outcome is expected, given that the model requires calibration with local data. Model skill seems to be unrelated to land-use but instead presented some dependency on biome and climate, with the models producing the best results for wet to moderately wet environments. Our findings show the suitability of individual models for a number of combinations of land cover types, biomes, and climates. At the same time, no model outperformed the others for all conditions, which emphasizes the need for adapting individual algorithms to take into account intrinsic characteristics of climates and ecosystems in South America. 650 $aClimate models 650 $aEvapotranspiration 650 $aMathematical models 650 $aRemote sensing 650 $aEvapotranspiração 650 $aModelo de Simulação 650 $aSensoriamento Remoto 700 1 $aANACHE, J. A. A. 700 1 $aBORGES, V. P. 700 1 $aGONZALEZ MIRALLES, D. 700 1 $aMARTENS, B. 700 1 $aFISHER, J. B. 700 1 $aNÓBREGA, R. L. B. 700 1 $aMORENO, Á. 700 1 $aCABRAL, O. M. R. 700 1 $aRODRIGUES, T. R. 700 1 $aBEZERRA, B. 700 1 $aSILVA, C. M. S. e 700 1 $aMEIRA NETO, A. A. 700 1 $aMOURA, M. S. B. de 700 1 $aMARQUES, T. V. 700 1 $aCAMPOS, S. 700 1 $aNOGUEIRA, J. de S. 700 1 $aROSOLEM, R. 700 1 $aSOUZA, R. M. S. 700 1 $aANTONINO, A. C. D. 700 1 $aHOLL, D. 700 1 $aGALLEGUILLOS, M. 700 1 $aPEREZ-QUEZADA, J. 700 1 $aVERHOEF, A. 700 1 $aKUTZBACH, L. 700 1 $aLIMA, J. R. de S. 700 1 $aSOUZA, E. S. de 700 1 $aGASSMANN, M. I. 700 1 $aPÉREZ, C. F. 700 1 $aTONTI, N. E. 700 1 $aPOSSE, G. 700 1 $aRAINS, D. 700 1 $aOLIVEIRA, P. T. 700 1 $aWENDLAND, E. 773 $tWater Resources Research$gv. 57, n. 11, e2020WR028752, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|