Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer

Evapotranspiration rates at the catchment scale are very difficult to quantify. One possible manner to continuously observe this variable could be the estimation of sensible heat fluxes (H) across large distances (in the order of kilometers) using a large aperture scintillometer (LAS), and inverting...

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Autores:
Samain, Bruno
Ferket, Bram V. A.
Defloor, Willem
Pauwels, Valentijn R. N.
Tipo de recurso:
Article of journal
Fecha de publicación:
2011
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/40696
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/40696
http://bdigital.unal.edu.co/30793/
Palabra clave:
Evapotranspiration
heat flux
Scintillometer
Calibration
validation
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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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_abf2Samain, Bruno21148b09-6fcb-4534-8f97-88b53506f8e3300Ferket, Bram V. A.574733f8-b2be-48e1-b38d-7f226dd6b133300Defloor, Willem06b9e338-2301-48c4-826d-6147e847b7db300Pauwels, Valentijn R. N.b0abb174-cd63-4d11-a1f6-e056b73730f63002019-06-28T09:38:47Z2019-06-28T09:38:47Z2011https://repositorio.unal.edu.co/handle/unal/40696http://bdigital.unal.edu.co/30793/Evapotranspiration rates at the catchment scale are very difficult to quantify. One possible manner to continuously observe this variable could be the estimation of sensible heat fluxes (H) across large distances (in the order of kilometers) using a large aperture scintillometer (LAS), and inverting these observations into evapotranspiration rates, under the assumption that the LAS observations are representative for the entire catchment. The objective of this paper is to assess whether measured sensible heat fluxes from a LAS over a long distance (9.5 km) can be assumed to be valid for a 102.3 km2 heterogeneous catchment. Therefore, a fully process-based water and energy balance model with a spatial resolution of 50 m has been thoroughly calibrated and validated for the Bellebeek catchmentin Belgium. A footprint analysis has been performed. In general, the sensible heat fluxes from the LAS compared well with the modeled sensible heat fluxes within the footprint. Moreover, as the modeled Hwithin the footprint has been found to be almost equal to the modeled catchment averaged H, it can be concluded that the scintillometer measurements over a distance of 9.5 km and an effective heightof 68 m are representative for the entire catchment.application/pdfspaUniversidad Nacional de Colombiahttp://revistas.unal.edu.co/index.php/gestion/article/view/29733Universidad Nacional de Colombia Revistas electrónicas UN Gestión y AmbienteGestión y AmbienteGestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 2357-5905 0124-177XSamain, Bruno and Ferket, Bram V. A. and Defloor, Willem and Pauwels, Valentijn R. N. (2011) Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer. Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 2357-5905 0124-177X .Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometerArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTEvapotranspirationheat fluxScintillometerCalibrationvalidationORIGINAL29733-106808-1-PB.pdfapplication/pdf2506176https://repositorio.unal.edu.co/bitstream/unal/40696/1/29733-106808-1-PB.pdff9ee4b8acc37b6a17bc2d3c00610d06cMD5129733-161710-1-PB.htmltext/html41286https://repositorio.unal.edu.co/bitstream/unal/40696/2/29733-161710-1-PB.htmlbf296e2f2fcc08fe9fc67cbbaa7d7f70MD52THUMBNAIL29733-106808-1-PB.pdf.jpg29733-106808-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg7602https://repositorio.unal.edu.co/bitstream/unal/40696/3/29733-106808-1-PB.pdf.jpg8119e68a08607f77f5321e9035f52769MD53unal/40696oai:repositorio.unal.edu.co:unal/406962023-01-30 23:04:07.449Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
title Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
spellingShingle Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
Evapotranspiration
heat flux
Scintillometer
Calibration
validation
title_short Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
title_full Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
title_fullStr Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
title_full_unstemmed Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
title_sort Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer
dc.creator.fl_str_mv Samain, Bruno
Ferket, Bram V. A.
Defloor, Willem
Pauwels, Valentijn R. N.
dc.contributor.author.spa.fl_str_mv Samain, Bruno
Ferket, Bram V. A.
Defloor, Willem
Pauwels, Valentijn R. N.
dc.subject.proposal.spa.fl_str_mv Evapotranspiration
heat flux
Scintillometer
Calibration
validation
topic Evapotranspiration
heat flux
Scintillometer
Calibration
validation
description Evapotranspiration rates at the catchment scale are very difficult to quantify. One possible manner to continuously observe this variable could be the estimation of sensible heat fluxes (H) across large distances (in the order of kilometers) using a large aperture scintillometer (LAS), and inverting these observations into evapotranspiration rates, under the assumption that the LAS observations are representative for the entire catchment. The objective of this paper is to assess whether measured sensible heat fluxes from a LAS over a long distance (9.5 km) can be assumed to be valid for a 102.3 km2 heterogeneous catchment. Therefore, a fully process-based water and energy balance model with a spatial resolution of 50 m has been thoroughly calibrated and validated for the Bellebeek catchmentin Belgium. A footprint analysis has been performed. In general, the sensible heat fluxes from the LAS compared well with the modeled sensible heat fluxes within the footprint. Moreover, as the modeled Hwithin the footprint has been found to be almost equal to the modeled catchment averaged H, it can be concluded that the scintillometer measurements over a distance of 9.5 km and an effective heightof 68 m are representative for the entire catchment.
publishDate 2011
dc.date.issued.spa.fl_str_mv 2011
dc.date.accessioned.spa.fl_str_mv 2019-06-28T09:38:47Z
dc.date.available.spa.fl_str_mv 2019-06-28T09:38:47Z
dc.type.spa.fl_str_mv Artículo de revista
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url https://repositorio.unal.edu.co/handle/unal/40696
http://bdigital.unal.edu.co/30793/
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dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Gestión y Ambiente
Gestión y Ambiente
dc.relation.ispartofseries.none.fl_str_mv Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 2357-5905 0124-177X
dc.relation.references.spa.fl_str_mv Samain, Bruno and Ferket, Bram V. A. and Defloor, Willem and Pauwels, Valentijn R. N. (2011) Estimation of catchment averaged sensible heat fluxes using a large aperture scintillometer. Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 Gestión y Ambiente; Vol. 14, núm. 3 (2011); 33-44 2357-5905 0124-177X .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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