Techniques for monthly rainfall regionalization in southwestern Colombia
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000601101 |
Resumo: | Abstract The knowledge of rainfall regimes is a relevant requirement for many activities such as water resources planning, risk management, agriculture activities management, and other hydrologic applications. The present study has consisted of validating four techniques (one linear, one non-linear, and two hybrids) that allow identifying homogenous regions. We take the monthly rainfall in the Southwestern Colombia (Nariño), an area of 33,268 km2 characterized by complex topography and local factors that can influence the rainfall behavior, to test all techniques. The results showed overall the best performance for the approach related to non-linear principal component analysis and self-organizing map. However, in all mainly prevail two regions: the Andean Region and Pacific Region with a bimodal and unimodal regime, respectively. The bimodal one dominates over the Andes mountains range and the unimodal one the coastal zone. The application of non-linear approaches provided a better understanding of the seasonality of rainfall, and the results may be useful for water resource management. |
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Anais da Academia Brasileira de Ciências (Online) |
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Techniques for monthly rainfall regionalization in southwestern ColombiarainfallregionalizationPrincipal Component Analysis (PCA)Hierarchical Clustering Analysis (HCA)Non-Linear Component Analysis (NLPCA)Self-Organizing Map (SOM)Abstract The knowledge of rainfall regimes is a relevant requirement for many activities such as water resources planning, risk management, agriculture activities management, and other hydrologic applications. The present study has consisted of validating four techniques (one linear, one non-linear, and two hybrids) that allow identifying homogenous regions. We take the monthly rainfall in the Southwestern Colombia (Nariño), an area of 33,268 km2 characterized by complex topography and local factors that can influence the rainfall behavior, to test all techniques. The results showed overall the best performance for the approach related to non-linear principal component analysis and self-organizing map. However, in all mainly prevail two regions: the Andean Region and Pacific Region with a bimodal and unimodal regime, respectively. The bimodal one dominates over the Andes mountains range and the unimodal one the coastal zone. The application of non-linear approaches provided a better understanding of the seasonality of rainfall, and the results may be useful for water resource management.Academia Brasileira de Ciências2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000601101Anais da Academia Brasileira de Ciências v.94 n.4 2022reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765202220201000info:eu-repo/semantics/openAccessCANCHALA,TERESITAOCAMPO-MARULANDA,CAMILOALFONSO-MORALES,WILFREDOCARVAJAL-ESCOBAR,YESIDCERÓN,WILMAR L.CAICEDO-BRAVO,EDUARDOeng2022-07-19T00:00:00Zoai:scielo:S0001-37652022000601101Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2022-07-19T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Techniques for monthly rainfall regionalization in southwestern Colombia |
title |
Techniques for monthly rainfall regionalization in southwestern Colombia |
spellingShingle |
Techniques for monthly rainfall regionalization in southwestern Colombia CANCHALA,TERESITA rainfall regionalization Principal Component Analysis (PCA) Hierarchical Clustering Analysis (HCA) Non-Linear Component Analysis (NLPCA) Self-Organizing Map (SOM) |
title_short |
Techniques for monthly rainfall regionalization in southwestern Colombia |
title_full |
Techniques for monthly rainfall regionalization in southwestern Colombia |
title_fullStr |
Techniques for monthly rainfall regionalization in southwestern Colombia |
title_full_unstemmed |
Techniques for monthly rainfall regionalization in southwestern Colombia |
title_sort |
Techniques for monthly rainfall regionalization in southwestern Colombia |
author |
CANCHALA,TERESITA |
author_facet |
CANCHALA,TERESITA OCAMPO-MARULANDA,CAMILO ALFONSO-MORALES,WILFREDO CARVAJAL-ESCOBAR,YESID CERÓN,WILMAR L. CAICEDO-BRAVO,EDUARDO |
author_role |
author |
author2 |
OCAMPO-MARULANDA,CAMILO ALFONSO-MORALES,WILFREDO CARVAJAL-ESCOBAR,YESID CERÓN,WILMAR L. CAICEDO-BRAVO,EDUARDO |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
CANCHALA,TERESITA OCAMPO-MARULANDA,CAMILO ALFONSO-MORALES,WILFREDO CARVAJAL-ESCOBAR,YESID CERÓN,WILMAR L. CAICEDO-BRAVO,EDUARDO |
dc.subject.por.fl_str_mv |
rainfall regionalization Principal Component Analysis (PCA) Hierarchical Clustering Analysis (HCA) Non-Linear Component Analysis (NLPCA) Self-Organizing Map (SOM) |
topic |
rainfall regionalization Principal Component Analysis (PCA) Hierarchical Clustering Analysis (HCA) Non-Linear Component Analysis (NLPCA) Self-Organizing Map (SOM) |
description |
Abstract The knowledge of rainfall regimes is a relevant requirement for many activities such as water resources planning, risk management, agriculture activities management, and other hydrologic applications. The present study has consisted of validating four techniques (one linear, one non-linear, and two hybrids) that allow identifying homogenous regions. We take the monthly rainfall in the Southwestern Colombia (Nariño), an area of 33,268 km2 characterized by complex topography and local factors that can influence the rainfall behavior, to test all techniques. The results showed overall the best performance for the approach related to non-linear principal component analysis and self-organizing map. However, in all mainly prevail two regions: the Andean Region and Pacific Region with a bimodal and unimodal regime, respectively. The bimodal one dominates over the Andes mountains range and the unimodal one the coastal zone. The application of non-linear approaches provided a better understanding of the seasonality of rainfall, and the results may be useful for water resource management. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000601101 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000601101 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765202220201000 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.94 n.4 2022 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
_version_ |
1754302872511578112 |