2020
DOI: 10.1590/0102-7786351019
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Tendências e Variabilidades nas Séries Históricas de Precipitação Mensal e Anual no Bioma Cerrado no Período 1977-2010

Abstract: Resumo O objetivo deste trabalho foi analisar as séries históricas mensais e anuais de precipitação de longo termo do bioma Cerrado, buscando identificar tendências locais e regionais. Para tanto, foram realizadas diferentes análises de tendência de séries temporais de precipitação anual e mensal de 125 estações pluviométricas do Cerrado, no período entre 1977 e 2010. O teste de MK indicou que 71% dos postos analisados apresentaram tendência de queda na precipitação anual, dos quais 14% apresentaram te… Show more

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Cited by 27 publications
(25 citation statements)
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“…Finally, Kendall's t coefficient indicates whether the trend was to increase (higher than 0) or decrease (lower than 0), while Thiel-Sen ö declivity (Theil, 1950;Sen, 1968), determined by the nonparametric Thiel-Sen test, measured the magnitude of the trend (Campos et al, 2020). It is noteworthy that the Thiel-Sen test uses the median of annual differences in precipitation.…”
Section: Time Trend Analysismentioning
confidence: 99%
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“…Finally, Kendall's t coefficient indicates whether the trend was to increase (higher than 0) or decrease (lower than 0), while Thiel-Sen ö declivity (Theil, 1950;Sen, 1968), determined by the nonparametric Thiel-Sen test, measured the magnitude of the trend (Campos et al, 2020). It is noteworthy that the Thiel-Sen test uses the median of annual differences in precipitation.…”
Section: Time Trend Analysismentioning
confidence: 99%
“…ENSO is characterized by a positive SST in the central and east-central equatorial Pacific phase (El Niño) and a negative opposite phase known as La Niña (Andreoli and Kayano, 2007). Therefore, ENSO intensifies anomalous Walker circulation with upward branches (sinking) on the equatorial Atlantic and downward branches (rising) in the eastern equatorial Pacific, which inhibits convection in these regions (Kayano et al, 2011;Capotondi et al, 2015;Andreoli et al, 2016). Where El Niño causes drought in the equatorial zone of South America, coincidently the Brazilian Northeast, La Niña presents the opposite behavior (Viegas et al, 2019).…”
Section: Zone Climatologymentioning
confidence: 99%
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“…Mesmo com os reservatórios retornando a níveis satisfatórios, a preocupação com a disponibilidade de água deve ser constante. Existe uma tendência de redução no regime de chuva no Cerrado, principalmente nas porções central e oeste do bioma (Campos & Chaves, 2020). Research, Society and Development, v. 9, n. 11, e1139119518, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i11.9518 A pergunta 7: investigou se a educação ambiental poderia ser mais eficiente que o racionamento diante dos desafios do consumo consciente.…”
Section: Para Caesb Também Foi Determinado a Elaboração Semanal De Plunclassified
“…Several studies worldwide indicate that changes in rainfall are usually associated with climate change. The effects of the climate change on precipitation vary according to the region, which may be associated with an increase in the volume of precipitation (Tammets & Jaagus, 2013;Piazza et al, 2016), or a downward trend in rainfall (Jong et al, 2018;Kahsay et al, 2018;Campos & Chaves, 2020). Thus, these effects can be characterized in time and space.…”
Section: Introductionmentioning
confidence: 99%