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A Model for Describing the Evolution of the Energy Density Spectrum in the Convective Boundary Layer Growth

  • Antonio Goulart
  • Haroldo F. Campos Velho
  • Gervásio Annes Degrazia
  • Domenico Anfossi
  • Otávio Acevedo
  • Osvaldo L. L. Moraes
  • D. M. Moreira
  • Jonas da Costa Carvalho
Conference paper

The literature regarding the Convective Boundary Layer (CBL) at early morning transition is scarce. Most papers are focused on the growth after convection is fully established. Tennekes (1973) proposes a conceptual model for the time required to erode the nocturnal inversion, while Kaimal et al. (1976) show a ‘typical’ diurnal cycle of surface heat flux and Convective Boundary Layer depth, but this begins after the surface heat flux is already positive. Wyngaard (1983) discusses the morning (‘neutral-convective’) transition briefly, and makes the point that only a relatively small buoyancy flux is needed to cause the transition. In this work, starting from the spectral form of the turbulent energy equation, a model for the CBL growing is described.

Keywords

Turbulent Kinetic Energy Diurnal Cycle Surface Heat Flux Convective Boundary Layer Spectral Form 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Antonio Goulart
    • 1
  • Haroldo F. Campos Velho
    • 2
  • Gervásio Annes Degrazia
    • 3
  • Domenico Anfossi
    • 4
  • Otávio Acevedo
    • 5
  • Osvaldo L. L. Moraes
    • 3
  • D. M. Moreira
    • 6
  • Jonas da Costa Carvalho
    • 6
  1. 1.Gervásio Annes DegraziaUFSM – Departamento de FísicaSanta MariaBrazil
  2. 2.Instituto Nacional de Pesquisas EspaciaisLACBrazil
  3. 3.Departamento de FísicaUniversidade Federal de Santa MariaSanta MariaBrazil
  4. 4.CNR-ISACItaly
  5. 5.Laboratório de Física da AtmosferaDepartamento de Física UFSMSanta MariaBrazil
  6. 6.Engenharia AmbientalUniversidade Luterana do BrasilCanoasBrazil

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