Hydrological retrospective and historical drought analysis in a brazilian savanna basin
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/55221 |
Resumo: | Analyzing historical droughts is essential to improve the assessment of future hydrological risks and to understand the effects of climate variability on streamflow. However, prolonged and consistent hydrological time series are scarce in the Brazilian savanna region. This study aimed to analyze the performance of climate reanalysis products in precipitation estimation, hydrological modeling, and historical drought analysis in a Brazilian savanna basin. For this purpose, precipitation data from the twentieth-century atmospheric model ensemble (ERA-20CM) and the land component of the fifth generation of European ReAnalysis (ERA5-Land) with bias correction were used. The weather variables were obtained from the Climatic Research Unit (CRU) and the hydrological modeling was performed using the Soil and Water Assessment Tool (SWAT). The Standardized Streamflow Index (SSI) was used to calculate hydrological drought in the basin. Overall, ERA5-Land performed satisfactorily in precipitation estimation, mainly on the monthly time scale, hydrological modeling, and drought prediction. Since ERA-20CM showed unsatisfactory values for the performance statistics in all analyses, the hydrologic drought (1950 to 2018) was performed with ERA5-Land. The results showed both an increase in the number of dry months and a decrease in wet months in recent decades. View Full-Text |
id |
UFLA_8c03ce735420738085acb2fa7febf620 |
---|---|
oai_identifier_str |
oai:localhost:1/55221 |
network_acronym_str |
UFLA |
network_name_str |
Repositório Institucional da UFLA |
repository_id_str |
|
spelling |
Hydrological retrospective and historical drought analysis in a brazilian savanna basinBias correctionClimate reanalysisERA-20CMERA5-LandSoil and Water Assessment Tool (SWAT)Analyzing historical droughts is essential to improve the assessment of future hydrological risks and to understand the effects of climate variability on streamflow. However, prolonged and consistent hydrological time series are scarce in the Brazilian savanna region. This study aimed to analyze the performance of climate reanalysis products in precipitation estimation, hydrological modeling, and historical drought analysis in a Brazilian savanna basin. For this purpose, precipitation data from the twentieth-century atmospheric model ensemble (ERA-20CM) and the land component of the fifth generation of European ReAnalysis (ERA5-Land) with bias correction were used. The weather variables were obtained from the Climatic Research Unit (CRU) and the hydrological modeling was performed using the Soil and Water Assessment Tool (SWAT). The Standardized Streamflow Index (SSI) was used to calculate hydrological drought in the basin. Overall, ERA5-Land performed satisfactorily in precipitation estimation, mainly on the monthly time scale, hydrological modeling, and drought prediction. Since ERA-20CM showed unsatisfactory values for the performance statistics in all analyses, the hydrologic drought (1950 to 2018) was performed with ERA5-Land. The results showed both an increase in the number of dry months and a decrease in wet months in recent decades. View Full-TextMultidisciplinary Digital Publishing Institute2022-09-27T20:23:40Z2022-09-27T20:23:40Z2022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfJUNQUEIRA, R. et al. Hydrological retrospective and historical drought analysis in a brazilian savanna basin. Water, [S.l.], v. 14, n. 14, 2022.http://repositorio.ufla.br/jspui/handle/1/55221Waterreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessJunqueira, RubensViola, Marcelo R.Amorim, Jhones da S.Wongchuig, Sly C.Mello, Carlos R. deVieira-Filho, MarceloCoelho, Gilbertoeng2023-05-03T11:12:03Zoai:localhost:1/55221Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-03T11:12:03Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
title |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
spellingShingle |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin Junqueira, Rubens Bias correction Climate reanalysis ERA-20CM ERA5-Land Soil and Water Assessment Tool (SWAT) |
title_short |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
title_full |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
title_fullStr |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
title_full_unstemmed |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
title_sort |
Hydrological retrospective and historical drought analysis in a brazilian savanna basin |
author |
Junqueira, Rubens |
author_facet |
Junqueira, Rubens Viola, Marcelo R. Amorim, Jhones da S. Wongchuig, Sly C. Mello, Carlos R. de Vieira-Filho, Marcelo Coelho, Gilberto |
author_role |
author |
author2 |
Viola, Marcelo R. Amorim, Jhones da S. Wongchuig, Sly C. Mello, Carlos R. de Vieira-Filho, Marcelo Coelho, Gilberto |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Junqueira, Rubens Viola, Marcelo R. Amorim, Jhones da S. Wongchuig, Sly C. Mello, Carlos R. de Vieira-Filho, Marcelo Coelho, Gilberto |
dc.subject.por.fl_str_mv |
Bias correction Climate reanalysis ERA-20CM ERA5-Land Soil and Water Assessment Tool (SWAT) |
topic |
Bias correction Climate reanalysis ERA-20CM ERA5-Land Soil and Water Assessment Tool (SWAT) |
description |
Analyzing historical droughts is essential to improve the assessment of future hydrological risks and to understand the effects of climate variability on streamflow. However, prolonged and consistent hydrological time series are scarce in the Brazilian savanna region. This study aimed to analyze the performance of climate reanalysis products in precipitation estimation, hydrological modeling, and historical drought analysis in a Brazilian savanna basin. For this purpose, precipitation data from the twentieth-century atmospheric model ensemble (ERA-20CM) and the land component of the fifth generation of European ReAnalysis (ERA5-Land) with bias correction were used. The weather variables were obtained from the Climatic Research Unit (CRU) and the hydrological modeling was performed using the Soil and Water Assessment Tool (SWAT). The Standardized Streamflow Index (SSI) was used to calculate hydrological drought in the basin. Overall, ERA5-Land performed satisfactorily in precipitation estimation, mainly on the monthly time scale, hydrological modeling, and drought prediction. Since ERA-20CM showed unsatisfactory values for the performance statistics in all analyses, the hydrologic drought (1950 to 2018) was performed with ERA5-Land. The results showed both an increase in the number of dry months and a decrease in wet months in recent decades. View Full-Text |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-27T20:23:40Z 2022-09-27T20:23:40Z 2022 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
JUNQUEIRA, R. et al. Hydrological retrospective and historical drought analysis in a brazilian savanna basin. Water, [S.l.], v. 14, n. 14, 2022. http://repositorio.ufla.br/jspui/handle/1/55221 |
identifier_str_mv |
JUNQUEIRA, R. et al. Hydrological retrospective and historical drought analysis in a brazilian savanna basin. Water, [S.l.], v. 14, n. 14, 2022. |
url |
http://repositorio.ufla.br/jspui/handle/1/55221 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
dc.source.none.fl_str_mv |
Water reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1807835051299176448 |