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Long-term relationships between climate oscillation and basin-scale hydrological variability during rainy season in eastern Northeast Brazil

Costa, Denis Duda LU ; Uvo, Cintia B. LU ; Rolim Da Paz, Adriano ; De Oliveira Carvalho, Frede and Fragoso, Carlos R. (2018) In Hydrological Sciences Journal 63(11). p.1636-1652
Abstract

The high variability in the hydrological regime of the Eastern Hydrological Region (EHR) of Northeast Brazil often results in floods and droughts, leading to serious socio-economic issues. Therefore, this work aimed to investigate connections between spatiotemporal hydrological variability of the EHR and large-scale climate phenomena. Multivariate statistical techniques were applied to relate climate indices with hydrological variables within two representative river basins in the EHR. The results indicated a multi-annual relationship between the state of the sea surface temperature of the Atlantic and Pacific oceans and anomalous hydrological variability in the basins. In addition, the northern Tropical Atlantic conditions were shown... (More)

The high variability in the hydrological regime of the Eastern Hydrological Region (EHR) of Northeast Brazil often results in floods and droughts, leading to serious socio-economic issues. Therefore, this work aimed to investigate connections between spatiotemporal hydrological variability of the EHR and large-scale climate phenomena. Multivariate statistical techniques were applied to relate climate indices with hydrological variables within two representative river basins in the EHR. The results indicated a multi-annual relationship between the state of the sea surface temperature of the Atlantic and Pacific oceans and anomalous hydrological variability in the basins. In addition, the northern Tropical Atlantic conditions were shown to play an important role in modulating the long-term variability of the hydrological response of the basins, whilst only extreme ENSO anomalies seemed to affect the rainy season. This knowledge is an important step towards long-term prediction of hydrological conditions and contributes to the improvement of water resources planning and management in the EHR.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
climate indices, climate variability, hydrological variability, Northeast Brazil, rainy season, seasonal forecast
in
Hydrological Sciences Journal
volume
63
issue
11
pages
1636 - 1652
publisher
IAHS Press
external identifiers
  • scopus:85054385887
ISSN
0262-6667
DOI
10.1080/02626667.2018.1523614
language
English
LU publication?
yes
id
45511d11-03d5-4493-ade0-96f3e7a77b97
date added to LUP
2018-10-23 10:35:02
date last changed
2020-01-22 07:17:10
@article{45511d11-03d5-4493-ade0-96f3e7a77b97,
  abstract     = {<p>The high variability in the hydrological regime of the Eastern Hydrological Region (EHR) of Northeast Brazil often results in floods and droughts, leading to serious socio-economic issues. Therefore, this work aimed to investigate connections between spatiotemporal hydrological variability of the EHR and large-scale climate phenomena. Multivariate statistical techniques were applied to relate climate indices with hydrological variables within two representative river basins in the EHR. The results indicated a multi-annual relationship between the state of the sea surface temperature of the Atlantic and Pacific oceans and anomalous hydrological variability in the basins. In addition, the northern Tropical Atlantic conditions were shown to play an important role in modulating the long-term variability of the hydrological response of the basins, whilst only extreme ENSO anomalies seemed to affect the rainy season. This knowledge is an important step towards long-term prediction of hydrological conditions and contributes to the improvement of water resources planning and management in the EHR.</p>},
  author       = {Costa, Denis Duda and Uvo, Cintia B. and Rolim Da Paz, Adriano and De Oliveira Carvalho, Frede and Fragoso, Carlos R.},
  issn         = {0262-6667},
  language     = {eng},
  number       = {11},
  pages        = {1636--1652},
  publisher    = {IAHS Press},
  series       = {Hydrological Sciences Journal},
  title        = {Long-term relationships between climate oscillation and basin-scale hydrological variability during rainy season in eastern Northeast Brazil},
  url          = {http://dx.doi.org/10.1080/02626667.2018.1523614},
  doi          = {10.1080/02626667.2018.1523614},
  volume       = {63},
  year         = {2018},
}