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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: |
20/08/2021 |
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Data da última atualização: |
20/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALTHOFF, D.; BAZAME, H. C.; FILGUEIRAS, R.; RODRIGUES, L. N. |
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Afiliação: |
DANIEL ALTHOFF; HELIZANI COUTO BAZAME; ROBERTO FILGUEIRAS; LINEU NEIVA RODRIGUES, CPAC. |
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Título: |
Assessing rainfall spatial variability in the Brazilian savanna region with TMPA rainfall dataset. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of South American Earth Sciences, v. 111, 2021. |
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Páginas: |
8 p. |
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DOI: |
https://doi.org/10.1016/j.jsames.2021.103482 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT Rainfall is a major component of the hydrological cycle. The lack of basic information on rainfall spatial variability is a major source of uncertainty in many fields of studies, e.g., meteorology, hydrology, and agriculture. Satellite rainfall measurements are becoming increasingly popular for their extensive database and reliable estimates. The objective of this study was to use the Tropical Rainfall Measuring Mission (TRMM) dataset along with rain gauges to characterize aspects of rainfall spatial variability and discuss the possible impacts from recent trends in the Brazilian savannah biome (Cerrado). Gauge stations were used to assess TRMM bias error and calibrate data for further analyses. Rainfall rates and their spatial variability showed a strong relationship to the transition zones between different biomes. Rainfall showed a decreasing trend for the eastern region of the Cerrado biome, a region characterized by a recent and significant expansion of crop areas. These trends agree with results from different studies which highlight the current drawdown of groundwater levels and reduced discharge, and possible lengthening of the dry season in the long run. As many conflicts have already been documented for this region, these decreasing trends are alarming for urgent and consistent hydroclimatic monitoring, and improved water resources planning and management. Positive trends for rainfall in the central Cerrado are likely a momentary recovery of recent-period drought. MenosABSTRACT Rainfall is a major component of the hydrological cycle. The lack of basic information on rainfall spatial variability is a major source of uncertainty in many fields of studies, e.g., meteorology, hydrology, and agriculture. Satellite rainfall measurements are becoming increasingly popular for their extensive database and reliable estimates. The objective of this study was to use the Tropical Rainfall Measuring Mission (TRMM) dataset along with rain gauges to characterize aspects of rainfall spatial variability and discuss the possible impacts from recent trends in the Brazilian savannah biome (Cerrado). Gauge stations were used to assess TRMM bias error and calibrate data for further analyses. Rainfall rates and their spatial variability showed a strong relationship to the transition zones between different biomes. Rainfall showed a decreasing trend for the eastern region of the Cerrado biome, a region characterized by a recent and significant expansion of crop areas. These trends agree with results from different studies which highlight the current drawdown of groundwater levels and reduced discharge, and possible lengthening of the dry season in the long run. As many conflicts have already been documented for this region, these decreasing trends are alarming for urgent and consistent hydroclimatic monitoring, and improved water resources planning and management. Positive trends for rainfall in the central Cerrado are likely a momentary recovery of recent-period ... Mostrar Tudo |
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Palavras-Chave: |
Meteorologia de satélite; Precipitação. |
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Thesagro: |
Cerrado; Mudança Climática. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02219naa a2200229 a 4500
001 2133762
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008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jsames.2021.103482$2DOI
100 1 $aALTHOFF, D.
245 $aAssessing rainfall spatial variability in the Brazilian savanna region with TMPA rainfall dataset.$h[electronic resource]
260 $c2021
300 $a8 p.
520 $aABSTRACT Rainfall is a major component of the hydrological cycle. The lack of basic information on rainfall spatial variability is a major source of uncertainty in many fields of studies, e.g., meteorology, hydrology, and agriculture. Satellite rainfall measurements are becoming increasingly popular for their extensive database and reliable estimates. The objective of this study was to use the Tropical Rainfall Measuring Mission (TRMM) dataset along with rain gauges to characterize aspects of rainfall spatial variability and discuss the possible impacts from recent trends in the Brazilian savannah biome (Cerrado). Gauge stations were used to assess TRMM bias error and calibrate data for further analyses. Rainfall rates and their spatial variability showed a strong relationship to the transition zones between different biomes. Rainfall showed a decreasing trend for the eastern region of the Cerrado biome, a region characterized by a recent and significant expansion of crop areas. These trends agree with results from different studies which highlight the current drawdown of groundwater levels and reduced discharge, and possible lengthening of the dry season in the long run. As many conflicts have already been documented for this region, these decreasing trends are alarming for urgent and consistent hydroclimatic monitoring, and improved water resources planning and management. Positive trends for rainfall in the central Cerrado are likely a momentary recovery of recent-period drought.
650 $aCerrado
650 $aMudança Climática
653 $aMeteorologia de satélite
653 $aPrecipitação
700 1 $aBAZAME, H. C.
700 1 $aFILGUEIRAS, R.
700 1 $aRODRIGUES, L. N.
773 $tJournal of South American Earth Sciences$gv. 111, 2021.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 752 | |
| 128. |  | TORRES, T. Z.; RODRIGUES, L. N.; SCHULER, A. E. Organização e gestão da Rede AgroHidro. In: SIMPÓSIO DA REDE AGROHIDRO, 2., 2014, Campinas. Impactos da agricultura e das mudanças climáticas nos recursos hídricos: anais. Brasília, DF: Embrapa, 2014. p. 77- Editores técnicos: Maria Fernanda Moura, Giampaolo Queiroz Pellegrino, Lineu Neiva Rodrigues.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
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| 129. | | TORRES, T. Z.; RODRIGUES, L. N.; SCHULER, A. E. Organização e gestão da Rede AgroHidro. In: SIMPÓSIO DA REDE AGROHIDRO, 2., 2014, Campinas. Impactos da agricultura e das mudanças climáticas nos recursos hídricos: anais. Brasília, DF: Embrapa, 2014. Editores técnicos: Maria Fernanda Moura, Giampaolo Queiroz Pellegrino, Lineu Neiva Rodrigues.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Solos. |
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| 138. | | TORRES, T. Z.; RODRIGUES, L. N.; SCHULER, A. E. A visão dos gestores sobre a Rede AgroHidro. In: SEMINÁRIO DA REDE AGROHIDRO, 3.; WORKSHOP DO PROJETO OS IMPACTOS DA AGRICULTURA E DAS MUDANÇAS CLIMÁTICAS NOS RECURSOS HÍDRICOS, 1., 2015, Corumbá. Água na agricultura: desafios frente às mudanças climáticas e de uso da terra: resumos. Brasília, DF: Embrapa, 2015. p. 10.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| 139. | | TORRES, T. Z.; RODRIGUES, L. N.; SCHULER, A. E. A visão dos gestores sobre a Rede AgroHidro. In: SEMINÁRIO DA REDE AGROHIDRO, 3.; WORKSHOP DO PROJETO OS IMPACTOS DA AGRICULTURA E DAS MUDANÇAS CLIMÁTICAS NOS RECURSOS HÍDRICOS, 1., 2015, Corumbá. Água na agricultura: desafios frente às mudanças climáticas e de uso da terra: resumos. Brasília, DF: Embrapa, 2015. p. 10.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| Registros recuperados : 752 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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