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Understanding drought dynamics during dry season in Eastern Northeast Brazil

Duda Costa, Denis LU ; da Silva Pereira, Thiago A.; Fragoso, Carlos R.; Madani, Kaveh LU and Uvo, Cintia B. LU (2016) In Frontiers in Earth Science 4.
Abstract

Eastern Northeast Brazil (ENEB) generally experiences a high variability in precipitation in the dry season, with amplitudes that can overcome 500mm. The understanding of this variability can help in mitigating the socio-economic issues related to the planning and management of water resources this region, which is highly vulnerable to drought. This work aims to assess spatio-temporal variability of precipitation during the dry season and investigate the relationships between climate phenomena and drought events in the ENEB, using univariate (Spearman correlation) and multivariate statistical techniques, such as Principal Component Analysis, Cluster Analysis, and Maximum Covariance Analysis. The results indicate that the variability of... (More)

Eastern Northeast Brazil (ENEB) generally experiences a high variability in precipitation in the dry season, with amplitudes that can overcome 500mm. The understanding of this variability can help in mitigating the socio-economic issues related to the planning and management of water resources this region, which is highly vulnerable to drought. This work aims to assess spatio-temporal variability of precipitation during the dry season and investigate the relationships between climate phenomena and drought events in the ENEB, using univariate (Spearman correlation) and multivariate statistical techniques, such as Principal Component Analysis, Cluster Analysis, and Maximum Covariance Analysis. The results indicate that the variability of precipitation in the dry season can be explained mainly (62%) by local physical conditions and climate conditions have a secondary contribution. Further analysis of the larger anomalous events suggests that the state of Atlantic and Pacific oceans can govern the occurrence of those events, and the conditions of Atlantic Ocean can be considered a potential modulator of anomalous phenomena of precipitation in ENEB.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Climate indices, Drought, Extreme events, Northeast Brazil, Semiarid
in
Frontiers in Earth Science
volume
4
publisher
Frontiers Research Foundation
external identifiers
  • scopus:84994682748
  • wos:000393143900001
DOI
10.3389/feart.2016.00069
language
English
LU publication?
yes
id
2f152f3c-cb88-4565-a723-b1bf586e1118
date added to LUP
2017-01-24 08:22:53
date last changed
2017-09-18 11:33:26
@article{2f152f3c-cb88-4565-a723-b1bf586e1118,
  abstract     = {<p>Eastern Northeast Brazil (ENEB) generally experiences a high variability in precipitation in the dry season, with amplitudes that can overcome 500mm. The understanding of this variability can help in mitigating the socio-economic issues related to the planning and management of water resources this region, which is highly vulnerable to drought. This work aims to assess spatio-temporal variability of precipitation during the dry season and investigate the relationships between climate phenomena and drought events in the ENEB, using univariate (Spearman correlation) and multivariate statistical techniques, such as Principal Component Analysis, Cluster Analysis, and Maximum Covariance Analysis. The results indicate that the variability of precipitation in the dry season can be explained mainly (62%) by local physical conditions and climate conditions have a secondary contribution. Further analysis of the larger anomalous events suggests that the state of Atlantic and Pacific oceans can govern the occurrence of those events, and the conditions of Atlantic Ocean can be considered a potential modulator of anomalous phenomena of precipitation in ENEB.</p>},
  articleno    = {69},
  author       = {Duda Costa, Denis and da Silva Pereira, Thiago A. and Fragoso, Carlos R. and Madani, Kaveh and Uvo, Cintia B.},
  keyword      = {Climate indices,Drought,Extreme events,Northeast Brazil,Semiarid},
  language     = {eng},
  month        = {06},
  publisher    = {Frontiers Research Foundation},
  series       = {Frontiers in Earth Science},
  title        = {Understanding drought dynamics during dry season in Eastern Northeast Brazil},
  url          = {http://dx.doi.org/10.3389/feart.2016.00069},
  volume       = {4},
  year         = {2016},
}