Ir al contenido (pulsa Retorno)

Universitat Politècnica de Catalunya

    • Català
    • Castellano
    • English
    • LoginRegisterLog in (no UPC users)
  • mailContact Us
  • world English 
    • Català
    • Castellano
    • English
  • userLogin   
      LoginRegisterLog in (no UPC users)

UPCommons. Global access to UPC knowledge

58.763 UPC E-Prints
You are here:
View Item 
  •   DSpace Home
  • E-prints
  • Departaments
  • Departament de Física Aplicada (fins octubre 2015)
  • Ponències/Comunicacions de congressos
  • View Item
  •   DSpace Home
  • E-prints
  • Departaments
  • Departament de Física Aplicada (fins octubre 2015)
  • Ponències/Comunicacions de congressos
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Studying the Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST)

Thumbnail
View/Open
Article ISARS 2010 (328,0Kb)
Share:
 
  View Usage Statistics
Cita com:
hdl:2117/8625

Show full item record
Vilà-Guerau de Arellano, Jordi
Pino González, DavidMés informacióMés informacióMés informació
Pardyjak, Erick
Mahrt, Larry
Lohou, Fabienne
Jonker, Harm J. J.
Gioli, Beniamino
Gibert, Fabien
Durand, Pierre
Lothon, Marie
Lenschow, Donald
Angevine, Wayne
Bange, Jens
Beare, Robert
Canut, Guylaine
Couvreux, Fleur
Delbarre, Hervé
Document typeConference report
Defense date2010
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
At the end of the afternoon, when the surface heat fluxes start to sharply decrease, the CBL turns from a convective well-mixed layer to an intermittently turbulent residual layer overlying a stably-stratified boundary layer. This transition raises several observational and modelling issues. Even the definition of the boundary layer during this period is fuzzy, since there is no consensus on what criteria to use and no simple scaling laws to apply. Yet it plays an important role in such diverse atmospheric phenomena as transport and diffusion of trace constituents or wind energy production. This phase of the diurnal cycle remains largely unexplored, partly due to the difficulty of measuring weak and intermittent turbulence, anisotropy, horizontal heterogeneity, and rapid time changes. The Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST) project is gathering about thirty research scientists from the European Union and the United States to work on this issue. A field campaign (BLLAST-FE) is planned for spring or summer 2011 in Europe. BLLAST will utilize these observations, as well as previous datasets, large-eddy and direct numerical simulations, and mesoscale modelling to better understand the processes, suggest new parameterisations, and evaluate forecast models during this transitional period. We will present the issues raised by the late afternoon transition and our strategy to study it.
CitationLothon, M. [et al.]. Studying the Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST). A: International Symposium for the Advancement of Boundary Layer Remote Sensing. "15th International Symposium for the Advancement of Boundary Layer Remote Sensing (ISARS 2010)". Paris: 2010, p. 1-4. 
URIhttp://hdl.handle.net/2117/8625
Collections
  • Departament de Física Aplicada (fins octubre 2015) - Ponències/Comunicacions de congressos [242]
  • DF - Dinàmica No Lineal de Fluids - Ponències/Comunicacions de congressos [107]
Share:
 
  View Usage Statistics

Show full item record

FilesDescriptionSizeFormatView
O_TUR03_Lothon.pdfArticle ISARS 2010328,0KbPDFView/Open

Browse

This CollectionBy Issue DateAuthorsOther contributionsTitlesSubjectsThis repositoryCommunities & CollectionsBy Issue DateAuthorsOther contributionsTitlesSubjects

© UPC Obrir en finestra nova . Servei de Biblioteques, Publicacions i Arxius

info.biblioteques@upc.edu

  • About This Repository
  • Contact Us
  • Send Feedback
  • Inici de la pàgina