Boundary-Layer Meteorology

, Volume 17, Issue 2, pp 247–264 | Cite as

An observational study of the structure of the nocturnal boundary layer

  • L. Mahrt
  • R. C. Heald
  • D. H. Lenschow
  • B. B. Stankov
  • IB Troen
Article

Abstract

In an effort to describe the basic vertical structure of the nocturnal boundary layer, observations from four experiments are analyzed. During the night, the depth of significant cooling appears to increase with time while the depth of the turbulence and height of the low level wind maximum tend to remain constant or decrease with time. Since the inversion layer extends above the low level wind maximum and shear is small in the region of the low level jet, the Richardson number reaches a maximum at the jet level and then decreases again with height. As a result, turbulence is observed to be a minimum at the height of the low level wind maximum and then increases again above this height.

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Copyright information

© D. Reidel Publishing Co 1979

Authors and Affiliations

  • L. Mahrt
    • 1
  • R. C. Heald
    • 1
  • D. H. Lenschow
    • 2
  • B. B. Stankov
    • 2
  • IB Troen
    • 3
  1. 1.Department of Atmospheric SciencesOregon State UniversityCorvallisUSA
  2. 2.National Center for Atmospheric ResearchBoulderUSA
  3. 3.Department of Meteorology and PhysicsRisø National LaboratoryRoskildeDenmark

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