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Countergradient heat flux observations during the evening transition period

Author
Blay, E.; Pardyjak, E.; Pino, D.; Alexander, D.; Lohou, F.; Lothon, M.
Type of activity
Journal article
Journal
Atmospheric chemistry and physics
Date of publication
2014-09-03
Volume
14
Number
17
First page
9077
Last page
9085
DOI
https://doi.org/10.5194/acp-14-9077-2014 Open in new window
Project funding
REGIMENES DE TRANSICION Y VARIABILIDAD EN LA DINAMICA Y LA QUIMICA DE LA BAJA TROPOSFERA
Understanding and quantifying the interaction between atmospheric boundary layer and regional scales in the carbon cycle
URL
http://www.atmos-chem-phys.net/14/9077/2014/acp-14-9077-2014.html Open in new window
Abstract
Gradient-based turbulence models generally assume that the buoyancy flux ceases to introduce heat into the surface layer of the atmospheric boundary layer in temporal consonance with the gradient of the local virtual potential temperature. Here, we hypothesize that during the evening transition a delay exists between the instant when the buoyancy flux goes to zero and the time when the local gradient of the virtual potential temperature indicates a sign change. This phenomenon is studied using a...
Keywords
AFTERNOON, ATMOSPHERIC SURFACE-LAYER, CONVECTIVE BOUNDARY-LAYER, DECAY, LAND, MODEL, SHEAR, SIMULATION, STRENGTH, TURBULENCE
Group of research
DF - Dinàmica de Fluids: formació d'estructures i aplicacions geofísiques

Participants

  • Blay Carreras, Estel  (author)
  • Pardyjak, Eric  (author)
  • Pino Gonzalez, David  (author)
  • Alexander, Daniel  (author)
  • Lohou, Fabienne  (author)
  • Lothon, Marie  (author)