GSTDTAP  > 气候变化
DOI10.1007/s00382-017-3642-9
Historical analysis of interannual rainfall variability and trends in southeastern Brazil based on observational and remotely sensed data
Vasquez, Isela L. P.1; Nascimento de Araujo, Ligia Maria1,2; Baldicero Molion, Luiz Carlos3; Abdalad, Mariana de Araujo4; Moreira, Daniel Medeiros1,5; Sanchez, Arturo4; Barbosa, Humberto Alves6; Rotunno Filho, Otto Correa1
2018-02-01
发表期刊CLIMATE DYNAMICS
ISSN0930-7575
EISSN1432-0894
出版年2018
卷号50页码:801-824
文章类型Article
语种英语
国家Brazil
英文摘要

The Brazilian Southeast is considered a humid region. It is also prone to landslides and floods, a result of significant increases in rainfall during spring and summer caused by the South Atlantic Convergence Zone (SACZ). Recently, however, the region has faced a striking rainfall shortage, raising serious concerns regarding water availability. The present work endeavored to explain the meteorological drought that has led to hydrological imbalance and water scarcity in the region. Hodrick-Prescott smoothing and wavelet transform techniques were applied to long-term hydrologic and sea surface temperature (SST)-based climate indices monthly time series data in an attempt to detect cycles and trends that could help explain rainfall patterns and define a framework for improving the predictability of extreme events in the region. Historical observational hydrologic datasets available include monthly precipitation amounts gauged since 1888 and 1940 and stream flow measured since the 1930s. The spatial representativeness of rain gauges was tested against gridded rainfall satellite estimates from 2000 to 2015. The analyses revealed variability in four time scale domains-infra-annual, interannual, quasi-decadal and inter-decadal or multi-decadal. The strongest oscillations periods revealed were: for precipitation-8 months, 2, 8 and 32 years; for Pacific SST in the Nio-3.4 region-6 months, 2, 8 and 35.6 years, for North Atlantic SST variability-6 months, 2, 8 and 32 years and for Pacific Decadal Oscillation (PDO) index-6.19 months, 2.04, 8.35 and 27.31 years. Other periodicities less prominent but still statistically significant were also highlighted.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000425328700005
WOS关键词ATLANTIC MULTIDECADAL OSCILLATION ; SOUTH-AMERICAN PRECIPITATION ; PACIFIC DECADAL OSCILLATION ; SCALE COMMON FEATURES ; TIME-SERIES ANALYSIS ; BAIU FRONTAL ZONE ; EL-NINO ; SURFACE-TEMPERATURE ; SUMMER MONSOON ; CLIMATE VARIABILITY
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/36168
专题气候变化
作者单位1.Univ Fed Rio de Janeiro, Inst Alberto Luiz Coimbra Posgrad & Pesquisa Engn, Programa Engn Civil, Caixa Postal 68540, BR-21945970 Rio De Janeiro, RJ, Brazil;
2.Agencia Nacl Aguas, Brasilia, DF, Brazil;
3.Univ Fed Alagoas, Inst Ciencias Atmosfer, Maceio, Brazil;
4.Univ Fed Rio de Janeiro, Inst Geociencias, Rio De Janeiro, Brazil;
5.Serv Geol Brasil, Companhia Pesquisa Recursos Minerais, Rio De Janeiro, RJ, Brazil;
6.Univ Fed Alagoas UFAL, Lab Proc Imagens Satelites LAPIS, Maceio, Brazil
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GB/T 7714
Vasquez, Isela L. P.,Nascimento de Araujo, Ligia Maria,Baldicero Molion, Luiz Carlos,et al. Historical analysis of interannual rainfall variability and trends in southeastern Brazil based on observational and remotely sensed data[J]. CLIMATE DYNAMICS,2018,50:801-824.
APA Vasquez, Isela L. P..,Nascimento de Araujo, Ligia Maria.,Baldicero Molion, Luiz Carlos.,Abdalad, Mariana de Araujo.,Moreira, Daniel Medeiros.,...&Rotunno Filho, Otto Correa.(2018).Historical analysis of interannual rainfall variability and trends in southeastern Brazil based on observational and remotely sensed data.CLIMATE DYNAMICS,50,801-824.
MLA Vasquez, Isela L. P.,et al."Historical analysis of interannual rainfall variability and trends in southeastern Brazil based on observational and remotely sensed data".CLIMATE DYNAMICS 50(2018):801-824.
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