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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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 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.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Ministry of Education of Brazil
  • Federal University of Paraiba
  • Federal University of Alagoas
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Oceanografi, hydrologi, vattenresurser

Nyckelord

Originalspråkengelska
Sidor (från-till)1636-1652
TidskriftHydrological Sciences Journal
Volym63
Utgåva nummer11
StatusPublished - 2018
PublikationskategoriForskning
Peer review utfördJa

Relaterad forskningsoutput

Denis Duda Costa, 2020 okt 12, Lund: Water Resources Engineering, Lund University. 75 s.

Forskningsoutput: AvhandlingDoktorsavhandling (sammanläggning)

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