Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/20.500.11765/873
NWC SAF convective precipitation product from MSG: A new day-time method based on cloud top physical properties
Título : NWC SAF convective precipitation product from MSG: A new day-time method based on cloud top physical properties
Otros títulos : Producto NWC SAF de precipitación convectiva a partir de MSG: un método nuevo diurno basado en las propiedades físicas de las cimas de las nubes
Producte NWC SAF de precipitació convectiva a partir de MSG: un mètode nou diürn basat en les propietats físiques dels cims dels núvols
Autor : Marcos Martín, Cecilia; Sancho Ávila, Juan Manuel; Tapiador, José María
Palabras clave : Precipitation; Rainfall rates; Nowcasting; GEO satellite; Precipitation; Rainfall rates; GEO satellite; Física de nubes; Predicción inmediata; Satélites geoestacionarios
Fecha de publicación : 2015
Editor: Associació Catalana de Meteorologia
Citación : Tethys. 2015, 12, p. 3-11
Versión del editor: https://dx.doi.org/10.3369/tethys.2015.12.01
Resumen : Several precipitation products use radiances and reflectances obtained from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) to estimate convective precipitation. The direct use of these physical quantities in precipitation algorithms is known to generate an overestimation of the precipitation area and an underestimation of the rainfall rates. In order to extenuate these issues, the most recent Satellite Application Facility on Support to Nowcasting & Very Short Range Forecasting (NWC SAF/MSG) software package (version 2013) includes a new day-time algorithm that takes advantage of advances in cloud microphysics estimation, namely a better knowledge of Effective Radius (Reff ), Cloud Optical Thickness (COT) and Water Phase. The improved algorithm, known as Convective Rainfall Rate from Cloud Physical Properties (CRPh), uses such Cloud Top Physical Properties (CPP) to estimate rainfall rates from convective clouds on a SEVIRI pixel basis (about 3 km at nadir). This paper presents the novelties of the new algorithm and provides both a comparison of the product with the previous versions in the NWC SAF/MSG software package, and a validation with independent ground radar data from the Spanish Radar Network operated by AEMET. Results obtained over 46 storms suggest that the CRPh provides more precise estimates than the previous algorithm, thus being more suitable for a number of quantitative applications.
URI : http://hdl.handle.net/20.500.11765/873
ISSN : 1697-1523
1139-3394
Colecciones: Artículos científicos 2015-2018


Ficheros en este ítem:
  Fichero Descripción Tamaño Formato  
2015 J SANCHO 12tethy...
3,4 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo del ítem



Los ítems de Arcimís están protegidos por una Licencia Creative Commons, salvo que se indique lo contrario.

Repositorio Arcimís
Nota Legal Contacto y sugerencias