Artigo

Rainfall trends in the Brazilian Amazon Basin in the past eight decades

Rainfall series at 18 stations along the major rivers of the Brazilian Amazon Basin, having data since 1920s or 1930s, are analyzed to verify if there are appreciable long-term trends. Annual, rainy-season, and dry-season rainfalls are individually analyzed for each station and for the region as a w...

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Autor principal: Satyamurty, Prakki
Outros Autores: Castro, Aline Anderson de, Tóta, Júlio, Silva Gularte, Lucia Eliane da, Manzi, Antônio Ocimar
Grau: Artigo
Idioma: English
Publicado em: Theoretical and Applied Climatology 2020
Assuntos:
Annual Variation
Climatology
Data Set
Rainfall
Regional Climate
Seasonal Variation
Trend Analysis
Amazon Basin
South America
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18370
id oai:repositorio:1-18370
recordtype dspace
spelling oai:repositorio:1-18370 Rainfall trends in the Brazilian Amazon Basin in the past eight decades Satyamurty, Prakki Castro, Aline Anderson de Tóta, Júlio Silva Gularte, Lucia Eliane da Manzi, Antônio Ocimar Annual Variation Climatology Data Set Rainfall Regional Climate Seasonal Variation Trend Analysis Amazon Basin South America Rainfall series at 18 stations along the major rivers of the Brazilian Amazon Basin, having data since 1920s or 1930s, are analyzed to verify if there are appreciable long-term trends. Annual, rainy-season, and dry-season rainfalls are individually analyzed for each station and for the region as a whole. Some stations showed positive trends and some negative trends. The trends in the annual rainfall are significant at only six stations, five of which reporting increasing trends (Barcelos, Belem, Manaus, Rio Branco, and Soure stations) and just one (Itaituba station) reporting decreasing trend. The climatological values of rainfall before and after 1970 show significant differences at six stations (Barcelos, Belem, Benjamin Constant, Iaurete, Itaituba, and Soure). The region as a whole shows an insignificant and weak downward trend; therefore, we cannot affirm that the rainfall in the Brazilian Amazon basin is experiencing a significant change, except at a few individual stations. Subregions with upward and downward trends are interspersed in space from the far eastern Amazon to western Amazon. Most of the seasonal trends follow the annual trends, thus, indicating a certain consistency in the datasets and analysis. © 2009 Springer-Verlag. 2020-06-15T21:54:13Z 2020-06-15T21:54:13Z 2010 Artigo https://repositorio.inpa.gov.br/handle/1/18370 10.1007/s00704-009-0133-x en Volume 99, Número 1-2, Pags. 139-148 Restrito Theoretical and Applied Climatology
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Annual Variation
Climatology
Data Set
Rainfall
Regional Climate
Seasonal Variation
Trend Analysis
Amazon Basin
South America
spellingShingle Annual Variation
Climatology
Data Set
Rainfall
Regional Climate
Seasonal Variation
Trend Analysis
Amazon Basin
South America
Satyamurty, Prakki
Rainfall trends in the Brazilian Amazon Basin in the past eight decades
topic_facet Annual Variation
Climatology
Data Set
Rainfall
Regional Climate
Seasonal Variation
Trend Analysis
Amazon Basin
South America
description Rainfall series at 18 stations along the major rivers of the Brazilian Amazon Basin, having data since 1920s or 1930s, are analyzed to verify if there are appreciable long-term trends. Annual, rainy-season, and dry-season rainfalls are individually analyzed for each station and for the region as a whole. Some stations showed positive trends and some negative trends. The trends in the annual rainfall are significant at only six stations, five of which reporting increasing trends (Barcelos, Belem, Manaus, Rio Branco, and Soure stations) and just one (Itaituba station) reporting decreasing trend. The climatological values of rainfall before and after 1970 show significant differences at six stations (Barcelos, Belem, Benjamin Constant, Iaurete, Itaituba, and Soure). The region as a whole shows an insignificant and weak downward trend; therefore, we cannot affirm that the rainfall in the Brazilian Amazon basin is experiencing a significant change, except at a few individual stations. Subregions with upward and downward trends are interspersed in space from the far eastern Amazon to western Amazon. Most of the seasonal trends follow the annual trends, thus, indicating a certain consistency in the datasets and analysis. © 2009 Springer-Verlag.
format Artigo
author Satyamurty, Prakki
author2 Castro, Aline Anderson de
Tóta, Júlio
Silva Gularte, Lucia Eliane da
Manzi, Antônio Ocimar
author2Str Castro, Aline Anderson de
Tóta, Júlio
Silva Gularte, Lucia Eliane da
Manzi, Antônio Ocimar
title Rainfall trends in the Brazilian Amazon Basin in the past eight decades
title_short Rainfall trends in the Brazilian Amazon Basin in the past eight decades
title_full Rainfall trends in the Brazilian Amazon Basin in the past eight decades
title_fullStr Rainfall trends in the Brazilian Amazon Basin in the past eight decades
title_full_unstemmed Rainfall trends in the Brazilian Amazon Basin in the past eight decades
title_sort rainfall trends in the brazilian amazon basin in the past eight decades
publisher Theoretical and Applied Climatology
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18370
_version_ 1787143365285904384
score 11.675608

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