Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

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

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 .

Texto completo

[img]
Vista previa
PDF
2MB
[img] HTML
41kB

URL oficial: http://revistas.unal.edu.co/index.php/gestion/arti...

Resumen

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.

Tipo de documento:Artículo - Article
Palabras clave:Evapotranspiration, heat flux, Scintillometer, Calibration, validation
Unidad administrativa:Revistas electrónicas UN > Gestión y Ambiente
Código ID:30793
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :30 Junio 2014 13:56
Ultima modificación:18 Agosto 2014 19:11
Ultima modificación:18 Agosto 2014 19:11
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Registry of Open Access Repositories OpenDOAR Metabiblioteca BDCOL OAIster Red de repositorios latinoamericanos DSpace BASE Open archives La referencia Colombiae Open Access Theses and Dissertations Tesis latinoamericanas CLACSO
Este sitio web se ve mejor en Firefox