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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
17/08/2021 |
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Data da última atualização: |
17/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALTHOFF, D.; RIBEIRO, R. B.; RODRIGUES, L. N. |
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Afiliação: |
DANIEL ALTHOFF; RAYSSA BALIEIRO RIBEIRO; LINEU NEIVA RODRIGUES, CPAC. |
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Título: |
Gauging the Ungauged: Regionalization of Flow Indices at Grid Level. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Hydrologic Engineering, v. 26, n. 4, 2021. |
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Páginas: |
11 p. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Despite advances in data collection and modeling, there still remains a significant gap in predicting flows in ungauged locations. This study presents an approach for using gridded data to regionalize flow indices (long-term average streamflows and flows that are equaled or exceeded for 95% of the time) along an entire streamflow network grid. The methodology is based on using the Terrain Analysis Using Digital Elevation Model (TauDEM) toolset to obtain input variables for the regionalization model as averaged to the catchment area of each pixel in the streamflow network grid. The variables used as input for the regionalization regression were the catchment area of each pixel in the streamflow network grid, average slope, annual rainfall, and annual evapotranspiration of the corresponding catchment area. These variables were downscaled to the resolution of the Multi-Error-Removed Improved-Terrain (MERIT) digital elevation model (DEM) (90 ×90 m). The result was a 90 ×90-m stream network grid with corresponding values for the modeled flow indices. Thus, the use of satellite-derived or gridded products improved the capacity of the grid to capture spatial patterns that fail to be captured in poorly gauged watersheds. The methodology can be adapted to other cases, for example, to model the parameters of hydrological models along the stream- flow network grid. The prediction of the streamflow/flow indices over the entire basin can provide water managers with greater confidence in granting water rights and in sustainably managing the resources in ungauged catchments. MenosAbstract: Despite advances in data collection and modeling, there still remains a significant gap in predicting flows in ungauged locations. This study presents an approach for using gridded data to regionalize flow indices (long-term average streamflows and flows that are equaled or exceeded for 95% of the time) along an entire streamflow network grid. The methodology is based on using the Terrain Analysis Using Digital Elevation Model (TauDEM) toolset to obtain input variables for the regionalization model as averaged to the catchment area of each pixel in the streamflow network grid. The variables used as input for the regionalization regression were the catchment area of each pixel in the streamflow network grid, average slope, annual rainfall, and annual evapotranspiration of the corresponding catchment area. These variables were downscaled to the resolution of the Multi-Error-Removed Improved-Terrain (MERIT) digital elevation model (DEM) (90 ×90 m). The result was a 90 ×90-m stream network grid with corresponding values for the modeled flow indices. Thus, the use of satellite-derived or gridded products improved the capacity of the grid to capture spatial patterns that fail to be captured in poorly gauged watersheds. The methodology can be adapted to other cases, for example, to model the parameters of hydrological models along the stream- flow network grid. The prediction of the streamflow/flow indices over the entire basin can provide water managers with greater conf... Mostrar Tudo |
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Palavras-Chave: |
Análise de terreno; Modelagem espacial; Modelo digital de elevação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02166naa a2200193 a 4500
001 2133631
005 2021-08-17
008 2021 bl uuuu u00u1 u #d
100 1 $aALTHOFF, D.
245 $aGauging the Ungauged$bRegionalization of Flow Indices at Grid Level.$h[electronic resource]
260 $c2021
300 $a11 p.
520 $aAbstract: Despite advances in data collection and modeling, there still remains a significant gap in predicting flows in ungauged locations. This study presents an approach for using gridded data to regionalize flow indices (long-term average streamflows and flows that are equaled or exceeded for 95% of the time) along an entire streamflow network grid. The methodology is based on using the Terrain Analysis Using Digital Elevation Model (TauDEM) toolset to obtain input variables for the regionalization model as averaged to the catchment area of each pixel in the streamflow network grid. The variables used as input for the regionalization regression were the catchment area of each pixel in the streamflow network grid, average slope, annual rainfall, and annual evapotranspiration of the corresponding catchment area. These variables were downscaled to the resolution of the Multi-Error-Removed Improved-Terrain (MERIT) digital elevation model (DEM) (90 ×90 m). The result was a 90 ×90-m stream network grid with corresponding values for the modeled flow indices. Thus, the use of satellite-derived or gridded products improved the capacity of the grid to capture spatial patterns that fail to be captured in poorly gauged watersheds. The methodology can be adapted to other cases, for example, to model the parameters of hydrological models along the stream- flow network grid. The prediction of the streamflow/flow indices over the entire basin can provide water managers with greater confidence in granting water rights and in sustainably managing the resources in ungauged catchments.
653 $aAnálise de terreno
653 $aModelagem espacial
653 $aModelo digital de elevação
700 1 $aRIBEIRO, R. B.
700 1 $aRODRIGUES, L. N.
773 $tJournal of Hydrologic Engineering$gv. 26, n. 4, 2021.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Origem |
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Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
27/04/1994 |
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Data da última atualização: |
27/04/1994 |
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Autoria: |
SOUSA, D. M. G. de. |
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Título: |
Fertilidade do solo e suas relacoes com as produtividades das culturas de soja e milho nos cerrados do medio Araguaia. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Planaltina: EMBRAPA-CPAC / Agua Boa: COOPERCANA, 1988. |
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Páginas: |
70p. |
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Série: |
(COOPERCANA. Boletim Tecnico, 2). |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado no 4o. Encontro Estadual de Departamentos Tecnicos das Cooperativas, realizado em Nova Xavantina, MT, 28 de junho a 1o. de julho de 1988. |
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Palavras-Chave: |
Brasil; Maize; Productivity; Rio Araguaia. |
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Thesagro: |
Cerrado; Fertilidade do Solo; Glycine Max; Milho; Produtividade; Soja; Zea Mays. |
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Thesaurus NAL: |
Brazil; soil fertility; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00976nam a2200301 a 4500
001 1548657
005 1994-04-27
008 1988 bl uuuu 00u1 u #d
100 1 $aSOUSA, D. M. G. de
245 $aFertilidade do solo e suas relacoes com as produtividades das culturas de soja e milho nos cerrados do medio Araguaia.
260 $aPlanaltina: EMBRAPA-CPAC / Agua Boa: COOPERCANA$c1988
300 $a70p.
490 $a(COOPERCANA. Boletim Tecnico, 2).
500 $aTrabalho apresentado no 4o. Encontro Estadual de Departamentos Tecnicos das Cooperativas, realizado em Nova Xavantina, MT, 28 de junho a 1o. de julho de 1988.
650 $aBrazil
650 $asoil fertility
650 $asoybeans
650 $aCerrado
650 $aFertilidade do Solo
650 $aGlycine Max
650 $aMilho
650 $aProdutividade
650 $aSoja
650 $aZea Mays
653 $aBrasil
653 $aMaize
653 $aProductivity
653 $aRio Araguaia
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