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		<doi>10.1175/2011JCLI3511.1</doi>
		<issn>0894-8755</issn>
		<citationkey>TeixeiraSaty:2011:TrFrIn</citationkey>
		<title>Trends in the frequency of intense precipitation events in southern and southeastern Brazil during 1960-2004</title>
		<year>2011</year>
		<month>Apr.</month>
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		<author>Teixeira, Mateus da Silva,</author>
		<author>Satyamurty, Prakki,</author>
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		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>mateus@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>prakki.satyamurty@cptec.inpe.br</electronicmailaddress>
		<journal>Journal of Climate</journal>
		<volume>24</volume>
		<number>7</number>
		<pages>1913-1921</pages>
		<secondarymark>A1_CIÊNCIAS_AGRÁRIAS_I A1_CIÊNCIAS_BIOLÓGICAS_I A1_ECOLOGIA_E_MEIO_AMBIENTE A1_ENGENHARIAS_I A1_GEOCIÊNCIAS A1_INTERDISCIPLINAR</secondarymark>
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		<keywords>ENSO, extreme events, precipitation, rainfall, South America, EXTREME PRECIPITATION, RAINFALL, AMERICA, CLIMATE, VARIABILITY.</keywords>
		<abstract>A new approach to define heavy and extreme rainfall events based on cluster analysis and area-average rainfall series is presented. The annual frequency of the heavy and extreme rainfall events is obtained for the southeastern and southern Brazil regions. In the 1960-2004 period, 510 (98) and 466 (77) heavy (extreme) rainfall events are identified in the two regions. Monthly distributions of the events closely follow the monthly climatological rainfall in the two regions. In both regions, annual heavy and extreme rainfall event frequencies present increasing trends in the 45-yr period. However, only in southern Brazil is the trend statistically significant. Although longer time series are necessary to ensure the existence of long-term trends, the positive trends are somewhat alarming since they indicate that climate changes, in terms of rainfall regimes, are possibly under way in Brazil. © 2011 American Meteorological Society.</abstract>
		<area>MET</area>
		<language>en</language>
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