Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.

Se identifican los principales modos de variabilidad hidro-climática en series de precipitación, caudales y temperatura en Colombia y en la cuenca Amazónica, de varias resoluciones temporales, comparando los resultados obtenidos mediante las transformadas de Fourier, Onditas y Hilbert-Huang, así com...

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Autores:: Carmona Duque, Alejandra María
Poveda Jaramillo, Germán

Tipo de recurso:: http://purl.org/coar/resource_type/c_c94f

Fecha de publicación:: 2011

Institución:: Universidad Nacional de Colombia

Repositorio:: Universidad Nacional de Colombia

Idioma:: spa

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repository_id_str
dc.title.spa.fl_str_mv	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
title	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
spellingShingle	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition. 51 Matemáticas / Mathematics 55 Ciencias de la tierra / Earth sciences and geology Cambio climático Variabilidad hidroclimática Descomposición en modos empíricos
title_short	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
title_full	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
title_fullStr	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
title_full_unstemmed	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
title_sort	Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.
dc.creator.fl_str_mv	Carmona Duque, Alejandra María Poveda Jaramillo, Germán
dc.contributor.author.spa.fl_str_mv	Carmona Duque, Alejandra María Poveda Jaramillo, Germán
dc.subject.ddc.spa.fl_str_mv	51 Matemáticas / Mathematics 55 Ciencias de la tierra / Earth sciences and geology
topic	51 Matemáticas / Mathematics 55 Ciencias de la tierra / Earth sciences and geology Cambio climático Variabilidad hidroclimática Descomposición en modos empíricos
dc.subject.proposal.spa.fl_str_mv	Cambio climático Variabilidad hidroclimática Descomposición en modos empíricos
description	Se identifican los principales modos de variabilidad hidro-climática en series de precipitación, caudales y temperatura en Colombia y en la cuenca Amazónica, de varias resoluciones temporales, comparando los resultados obtenidos mediante las transformadas de Fourier, Onditas y Hilbert-Huang, así como identificando señales de cambio climático y variabilidad hidro-climática de largo plazo a través de la metodología de la Descomposición en Modos Empíricos.
publishDate	2011
dc.date.issued.spa.fl_str_mv	2011-08-21
dc.date.accessioned.spa.fl_str_mv	2019-06-24T16:57:56Z
dc.date.available.spa.fl_str_mv	2019-06-24T16:57:56Z
dc.type.spa.fl_str_mv	Documento de Conferencia
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dc.identifier.uri.none.fl_str_mv	https://repositorio.unal.edu.co/handle/unal/7887
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url	https://repositorio.unal.edu.co/handle/unal/7887 http://bdigital.unal.edu.co/4355/
dc.language.iso.spa.fl_str_mv	spa
language	spa
dc.relation.ispartof.spa.fl_str_mv	Universidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Geociencias y Medio Ambiente Escuela de Geociencias y Medio Ambiente
dc.relation.references.spa.fl_str_mv	Carmona Duque, Alejandra María and Poveda Jaramillo, Germán (2011) Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition. In: 58th International Statistics Institute (ISI) World Statistics Congress, 21-26 de agosto, Dublin, Irlanda . (Enviado)
dc.rights.spa.fl_str_mv	Derechos reservados - Universidad Nacional de Colombia
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dc.rights.license.spa.fl_str_mv	Atribución-NoComercial 4.0 Internacional
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rights_invalid_str_mv	Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv	openAccess
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institution	Universidad Nacional de Colombia
bitstream.url.fl_str_mv	https://repositorio.unal.edu.co/bitstream/unal/7887/1/Carmona_%26_Poveda%2c_ISI_Manuscript_2011.pdf https://repositorio.unal.edu.co/bitstream/unal/7887/2/Carmona_%26_Poveda%2c_ISI_Manuscript_2011.pdf.jpg
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repository.name.fl_str_mv	Repositorio Institucional Universidad Nacional de Colombia
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spelling	Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Carmona Duque, Alejandra María242ac8c7-bcb9-4943-a222-2a6a2b85a7a7300Poveda Jaramillo, Germán08114b9c-d5eb-49f3-8916-1e55ff12b8763002019-06-24T16:57:56Z2019-06-24T16:57:56Z2011-08-21https://repositorio.unal.edu.co/handle/unal/7887http://bdigital.unal.edu.co/4355/Se identifican los principales modos de variabilidad hidro-climática en series de precipitación, caudales y temperatura en Colombia y en la cuenca Amazónica, de varias resoluciones temporales, comparando los resultados obtenidos mediante las transformadas de Fourier, Onditas y Hilbert-Huang, así como identificando señales de cambio climático y variabilidad hidro-climática de largo plazo a través de la metodología de la Descomposición en Modos Empíricos.The hydro-climatology of Colombia exhibits significant signatures of climatic change and also strong natural climate variability at a broad range of time scales from interdecadal and interannual all the way through intradiurnal. Signals of long-term trends and of natural climate variability are detected in Colombia and the Amazon River basin using long series of monthly rainfall (100 stations), average river discharges (42 stations) and mean and minimum temperature records (37 stations) in Colombia. In the Amazon basin 29 monthly rainfall stations were studied. Stations with more than 25 years of data and well spatially distributed across Colombia and the Amazon were selected. Also, time series of average monthly river discharges were selected on 10 Colombian river basins with gauging stations along their path. For estimation, the Empirical Mode Decomposition (EMD), is used as a filtering process whereby a time series is decomposed into a finite number of intrinsic mode functions (IMFs), assuming that at any given time, many simple oscillatory modes of different frequencies coexist in a time series, where the residual represents the general trend of the series over time. The statistical significance of the trend in the EMD residuals are tested through the Mann-Kendall test for autocorrelated series and the magnitude of the trends are quantified by the Sen test. Results show that most monthly river discharges series exhibit decreasing trends, whereas the minimum temperature series show increasing trends. Results on precipitation are inconclusive as monthly records exhibit a mixed pattern of increasing and decreasing trends. However, it was established that the maximum trend magnitudes in rainfall series are located in the Colombian Pacific region (increasing trends), whereas towards the rest of the country no clear spatial pattern could be recognized. Also a consistent result between trends in rainfall and discharges in the Pacific region was found. These series exhibit increasing trends coinciding with a rising trend estimated in the Choco Low level Jet series which represents moisture advection into this particular area. In the Amazon basin the maximum trend magnitudes were found in the basin's central and south-eastern region. (Tomado de la fuente)58th International Statistics Institute (ISI) World Statistics Congressapplication/pdfspaUniversidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Geociencias y Medio AmbienteEscuela de Geociencias y Medio AmbienteCarmona Duque, Alejandra María and Poveda Jaramillo, Germán (2011) Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition. In: 58th International Statistics Institute (ISI) World Statistics Congress, 21-26 de agosto, Dublin, Irlanda . (Enviado)51 Matemáticas / Mathematics55 Ciencias de la tierra / Earth sciences and geologyCambio climáticoVariabilidad hidroclimáticaDescomposición en modos empíricosDetection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.Documento de Conferenciainfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_c94fhttp://purl.org/coar/version/c_71e4c1898caa6e32TextORIGINALCarmona_&_Poveda,_ISI_Manuscript_2011.pdfapplication/pdf460120https://repositorio.unal.edu.co/bitstream/unal/7887/1/Carmona_%26_Poveda%2c_ISI_Manuscript_2011.pdfab09c26d8354643c3d0fcfa7ad070fccMD51THUMBNAILCarmona_&_Poveda,_ISI_Manuscript_2011.pdf.jpgCarmona_&_Poveda,_ISI_Manuscript_2011.pdf.jpgGenerated Thumbnailimage/jpeg8014https://repositorio.unal.edu.co/bitstream/unal/7887/2/Carmona_%26_Poveda%2c_ISI_Manuscript_2011.pdf.jpgf6494918e1b835d672882b3c513bdf55MD52unal/7887oai:repositorio.unal.edu.co:unal/78872023-08-29 23:05:05.806Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co

Detection of climate change and climate variability signals in Colombia and the Amazon River basin through empirical mode decomposition.

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