Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista ciência agronômica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200008 |
Resumo: | Despite uncertainties as to the real causes, there is a large amount of evidence of climatic change on Earth. With the objective of investigating changes in extreme air temperatures, as well as the local effects of these changes, eight data sets, collected throughout the State of Ceará in Brazil, were analyzed. Four series of data were obtained from the semi-arid region, three from the coastal zone, and one from a mountainous region. To quantify the changes that occurred during the study period, variations in maximum and minimum temperatures were calculated in relation to the mean of each data series. The annual rates of temperature increase were estimated from the angular coefficients of the best-fit lines. The results showed that although there are differences in trends between stations, there was a systematic increase in the maximum and minimum temperature in the nineties, which was especially evident in the following decade. The highest rates of increase were recorded for the minimum temperatures (from 9.0 to 8.3 °C per century) for the stations at Guaramiranga and Crateús respectively. These data provide evidence for a greater retention of energy in the form of sensible heat during the night, possibly due to a more difficult energy exchange between the surface and the atmosphere. |
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Extreme temperature trends in the equatorial region of Brazil: Case study of the state of CearáClimatic changesGlobal warmingAir temperatureDespite uncertainties as to the real causes, there is a large amount of evidence of climatic change on Earth. With the objective of investigating changes in extreme air temperatures, as well as the local effects of these changes, eight data sets, collected throughout the State of Ceará in Brazil, were analyzed. Four series of data were obtained from the semi-arid region, three from the coastal zone, and one from a mountainous region. To quantify the changes that occurred during the study period, variations in maximum and minimum temperatures were calculated in relation to the mean of each data series. The annual rates of temperature increase were estimated from the angular coefficients of the best-fit lines. The results showed that although there are differences in trends between stations, there was a systematic increase in the maximum and minimum temperature in the nineties, which was especially evident in the following decade. The highest rates of increase were recorded for the minimum temperatures (from 9.0 to 8.3 °C per century) for the stations at Guaramiranga and Crateús respectively. These data provide evidence for a greater retention of energy in the form of sensible heat during the night, possibly due to a more difficult energy exchange between the surface and the atmosphere.Universidade Federal do Ceará2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200008Revista Ciência Agronômica v.43 n.2 2012reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.1590/S1806-66902012000200008info:eu-repo/semantics/openAccessAndrade,Eunice Maia deSilva,Bernardo Barbosa daRodrigues,Meilla Marielle AraújoMendonça,Marcos Amauri BezerraChaves,Luiz Carlos Guerreiroeng2012-01-02T00:00:00Zoai:scielo:S1806-66902012000200008Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2012-01-02T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
title |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
spellingShingle |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará Andrade,Eunice Maia de Climatic changes Global warming Air temperature |
title_short |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
title_full |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
title_fullStr |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
title_full_unstemmed |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
title_sort |
Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará |
author |
Andrade,Eunice Maia de |
author_facet |
Andrade,Eunice Maia de Silva,Bernardo Barbosa da Rodrigues,Meilla Marielle Araújo Mendonça,Marcos Amauri Bezerra Chaves,Luiz Carlos Guerreiro |
author_role |
author |
author2 |
Silva,Bernardo Barbosa da Rodrigues,Meilla Marielle Araújo Mendonça,Marcos Amauri Bezerra Chaves,Luiz Carlos Guerreiro |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Andrade,Eunice Maia de Silva,Bernardo Barbosa da Rodrigues,Meilla Marielle Araújo Mendonça,Marcos Amauri Bezerra Chaves,Luiz Carlos Guerreiro |
dc.subject.por.fl_str_mv |
Climatic changes Global warming Air temperature |
topic |
Climatic changes Global warming Air temperature |
description |
Despite uncertainties as to the real causes, there is a large amount of evidence of climatic change on Earth. With the objective of investigating changes in extreme air temperatures, as well as the local effects of these changes, eight data sets, collected throughout the State of Ceará in Brazil, were analyzed. Four series of data were obtained from the semi-arid region, three from the coastal zone, and one from a mountainous region. To quantify the changes that occurred during the study period, variations in maximum and minimum temperatures were calculated in relation to the mean of each data series. The annual rates of temperature increase were estimated from the angular coefficients of the best-fit lines. The results showed that although there are differences in trends between stations, there was a systematic increase in the maximum and minimum temperature in the nineties, which was especially evident in the following decade. The highest rates of increase were recorded for the minimum temperatures (from 9.0 to 8.3 °C per century) for the stations at Guaramiranga and Crateús respectively. These data provide evidence for a greater retention of energy in the form of sensible heat during the night, possibly due to a more difficult energy exchange between the surface and the atmosphere. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000200008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1806-66902012000200008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal do Ceará |
publisher.none.fl_str_mv |
Universidade Federal do Ceará |
dc.source.none.fl_str_mv |
Revista Ciência Agronômica v.43 n.2 2012 reponame:Revista ciência agronômica (Online) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Revista ciência agronômica (Online) |
collection |
Revista ciência agronômica (Online) |
repository.name.fl_str_mv |
Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
||alekdutra@ufc.br|| ccarev@ufc.br |
_version_ |
1750297486224785408 |