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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/03/2015 |
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Data da última atualização: |
15/07/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CASTRO, K.; LIMA, J. E. F. W.; ROIG, H. |
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Afiliação: |
KÁSSIA CASTRO, UNIVERSIDADE DE BRASÍLIA; JORGE ENOCH FURQUIM WERNECK LIMA, CPAC; HENRIQUE ROIG, UNIVERSIDADE DE BRASÍLIA. |
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Título: |
Impacts of a specific soil database on streamflow simulation with SWAT in an experimental rural catchment of the Brazilian savanna. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: SOIL AND WATER ASSESSMENT TOOL CONFERENCE, 2014, Porto de Galinhas. Book of abstracts... Texas: USDA Agricultural Research Service, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to evaluate the impacts of using a specific soil database on streamflow simulation with SWAT model in an experimental rural catchment of the Brazilian savana (Cerrado biome). In order to accomplish that, two soil databases were tested, one generated by data measured in the studied area (Sim1), and the other from literature (Sim2). The Upper Jardim Experimental River Basin (105 km2), located in a rural zone of the Brazilian Federal District, due to this remarkable soil database, was chosen as the study area. Streamflow simulations were performed for two consecutive years (2006-2008), on a daily basis. No calibration was performed to make it possible to analyze the impact of the soil database on the first simulation, what is relevant mainly for ungagged basins. Even having better physical basis, the results obtained by Sim1 (NSE = -10.81) was worse than the ones generated by Sim2 (NSE = -6.15). The negative NSE values indicate that both simulations failed to represent observed data. Analyzing the hydrographs, it is noticed that: (i) both simulations underestimated baseflow during the dry season; (ii) both simulations overestimated streamflow peaks, but Sim1 presented higher (worst) values; (iii) during the rainy season, the baseflow simulation of Sim1 was satisfactory, while it was overestimated in Sim2. The results reinforce that the model is sensible to soil information, but it shows that it is still necessary more studies about other SWAT parameters, as the ones that control runoff generation. MenosThis study aimed to evaluate the impacts of using a specific soil database on streamflow simulation with SWAT model in an experimental rural catchment of the Brazilian savana (Cerrado biome). In order to accomplish that, two soil databases were tested, one generated by data measured in the studied area (Sim1), and the other from literature (Sim2). The Upper Jardim Experimental River Basin (105 km2), located in a rural zone of the Brazilian Federal District, due to this remarkable soil database, was chosen as the study area. Streamflow simulations were performed for two consecutive years (2006-2008), on a daily basis. No calibration was performed to make it possible to analyze the impact of the soil database on the first simulation, what is relevant mainly for ungagged basins. Even having better physical basis, the results obtained by Sim1 (NSE = -10.81) was worse than the ones generated by Sim2 (NSE = -6.15). The negative NSE values indicate that both simulations failed to represent observed data. Analyzing the hydrographs, it is noticed that: (i) both simulations underestimated baseflow during the dry season; (ii) both simulations overestimated streamflow peaks, but Sim1 presented higher (worst) values; (iii) during the rainy season, the baseflow simulation of Sim1 was satisfactory, while it was overestimated in Sim2. The results reinforce that the model is sensible to soil information, but it shows that it is still necessary more studies about other SWAT parameters, as the... Mostrar Tudo |
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Palavras-Chave: |
Modelo hidrológico. |
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Thesaurus Nal: |
Hydrology; Runoff; Savannas. |
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Categoria do assunto: |
-- |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1011366/1/Impacts-of-a-specific-soil-database.pdf
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Marc: |
LEADER 02199nam a2200181 a 4500
001 2011366
005 2024-07-15
008 2014 bl uuuu u00u1 u #d
100 1 $aCASTRO, K.
245 $aImpacts of a specific soil database on streamflow simulation with SWAT in an experimental rural catchment of the Brazilian savanna.$h[electronic resource]
260 $aIn: SOIL AND WATER ASSESSMENT TOOL CONFERENCE, 2014, Porto de Galinhas. Book of abstracts... Texas: USDA Agricultural Research Service$c2014
520 $aThis study aimed to evaluate the impacts of using a specific soil database on streamflow simulation with SWAT model in an experimental rural catchment of the Brazilian savana (Cerrado biome). In order to accomplish that, two soil databases were tested, one generated by data measured in the studied area (Sim1), and the other from literature (Sim2). The Upper Jardim Experimental River Basin (105 km2), located in a rural zone of the Brazilian Federal District, due to this remarkable soil database, was chosen as the study area. Streamflow simulations were performed for two consecutive years (2006-2008), on a daily basis. No calibration was performed to make it possible to analyze the impact of the soil database on the first simulation, what is relevant mainly for ungagged basins. Even having better physical basis, the results obtained by Sim1 (NSE = -10.81) was worse than the ones generated by Sim2 (NSE = -6.15). The negative NSE values indicate that both simulations failed to represent observed data. Analyzing the hydrographs, it is noticed that: (i) both simulations underestimated baseflow during the dry season; (ii) both simulations overestimated streamflow peaks, but Sim1 presented higher (worst) values; (iii) during the rainy season, the baseflow simulation of Sim1 was satisfactory, while it was overestimated in Sim2. The results reinforce that the model is sensible to soil information, but it shows that it is still necessary more studies about other SWAT parameters, as the ones that control runoff generation.
650 $aHydrology
650 $aRunoff
650 $aSavannas
653 $aModelo hidrológico
700 1 $aLIMA, J. E. F. W.
700 1 $aROIG, H.
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