GSTDTAP  > 气候变化
DOI10.1002/joc.4840
A comprehensive analysis of trends in extreme precipitation over southeastern coast of Brazil
Zilli, Marcia T.1; Carvalho, Leila M. V.1,2; Liebmann, Brant3; Silva Dias, Maria A.4
2017-04-01
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
EISSN1097-0088
出版年2017
卷号37期号:5
文章类型Article
语种英语
国家USA; Brazil
英文摘要

Southeast Brazil (SE Brazil) is the most densely populated region in Brazil. Previous studies have shown evidence of positive trends in average precipitation and extreme events in a few locations, suggesting the increase in rainfall-related hazards with potential impacts to urbanized areas of SE Brazil. This study provides a comprehensive analysis of the spatial variability of trends in extreme precipitation over SE Brazil focusing on regional and local scales. We examine two daily rainfall datasets with more than 70 years of data: individual stations and gridded observed precipitation data. Our results indicate that the frequency of both rainy days and extreme daily precipitation events have increased in Sao Paulo state. Conversely, precipitation has become more concentrated in fewer events in Rio de Janeiro and Espirito Santo states where both data sets indicate positive trends in the intensity of extreme daily rainfall. The increases in frequency and intensity of extreme events have both contributed to positive trends in total seasonal and average daily precipitation over Sao Paulo. Additionally, the individual stations indicate negative trends in the number of light rainy days over large urbanized areas in the state of Sao Paulo. The spatial patterns of trends indicate that they are influenced by the proximity of large urban centres and topographic features, and also suggest variations and changes in the major climatic systems affecting precipitation regimes over SE.


英文关键词precipitation trends extreme events spatial variability of precipitation observed precipitation Southeast Brazil
领域气候变化
收录类别SCI-E
WOS记录号WOS:000398859700006
WOS关键词SOUTH-AMERICA ; LARGE-SCALE ; SAO-PAULO ; INTERANNUAL VARIABILITY ; DAILY RAINFALL ; ATLANTIC ; EVENTS ; TEMPERATURE ; FEATURES ; CLIMATE
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/36963
专题气候变化
作者单位1.Univ Calif Santa Barbara, Dept Geog, 1832 Ellison Hall, Santa Barbara, CA 93106 USA;
2.Univ Calif Santa Barbara, Earth Res Inst, 1832 Ellison Hall, Santa Barbara, CA 93106 USA;
3.NOAA, CIRES, Boulder, CO USA;
4.Univ Sao Paulo, Dept Atmospher Sci, Sao Paulo, Brazil
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GB/T 7714
Zilli, Marcia T.,Carvalho, Leila M. V.,Liebmann, Brant,et al. A comprehensive analysis of trends in extreme precipitation over southeastern coast of Brazil[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(5).
APA Zilli, Marcia T.,Carvalho, Leila M. V.,Liebmann, Brant,&Silva Dias, Maria A..(2017).A comprehensive analysis of trends in extreme precipitation over southeastern coast of Brazil.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(5).
MLA Zilli, Marcia T.,et al."A comprehensive analysis of trends in extreme precipitation over southeastern coast of Brazil".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.5(2017).
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