Long-term relationships between climate oscillation and basin-scale hydrological variability during rainy season in eastern Northeast Brazil
(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
- Costa, Denis Duda LU ; Uvo, Cintia B. LU ; Rolim Da Paz, Adriano ; De Oliveira Carvalho, Frede and Fragoso, Carlos R.
- organization
- publishing date
- 2018
- 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
- Taylor & Francis
- 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
- 2022-04-25 18:25:36
@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}}, keywords = {{climate indices; climate variability; hydrological variability; Northeast Brazil; rainy season; seasonal forecast}}, language = {{eng}}, number = {{11}}, pages = {{1636--1652}}, publisher = {{Taylor & Francis}}, 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}}, }