A Formula for the Depth of the Stable Boundary layer: Evaluation and Dimensional Analysis

G.J. Steeneveld, B.J.H. van de Wiel, A.A.M. Holtslag

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

The height (h) of the stable boundary layer (SBL) is of major importance to understand the relevant processes that govern the SBL development. The SBL depth is the layer in which turbulence transport takes place, and thus governs the vertical structure of the lower atmosphere. Furthermore, release of pollutants below h during periods of weak mixing results in very high pollutant concentrations. For meteorological preprocessors for air quality models, h is the most critical quantity to estimate. This study evaluates the performance of two so-called multi-limit equations for h, and presents an alternative formulation (based on dimensional analysis) that depends on surface friction velocity, surface buoyancy flux, Coriolis parameter and the stratification above the boundary layer. The formulations are tested against four observational data sets (with varying roughness, latitude and land use) and Large Eddy Simulation from the first GEWEX Atmospheric Boundary Layer Study (GABLS). The multi-limit formulations show a significant negative bias for shallow SBLs. We find that the required parameters in the multi-limit Equations cannot be calibrated in a robust manner. The main advantages of the new formulation lies in a robust calibration, a significant reduced bias for small SBL depth and reduction of scatter compared over the whole range of observations to the two multi-limit Equations.
Original languageEnglish
Title of host publication17th Symposium on Boundary Layers and Turbulence, 22-25 May 2006, San Diego, California
Place of PublicationBoston
PublisherAmerican Meteorological Society
PagesJ4.6
Number of pages4
Publication statusPublished - 2006
Event17th Symposium on Boundary Layers and Turbulence -
Duration: 22 May 200625 May 2006

Conference

Conference17th Symposium on Boundary Layers and Turbulence
Period22/05/0625/05/06

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Steeneveld, G. J., van de Wiel, B. J. H., & Holtslag, A. A. M. (2006). A Formula for the Depth of the Stable Boundary layer: Evaluation and Dimensional Analysis. In 17th Symposium on Boundary Layers and Turbulence, 22-25 May 2006, San Diego, California (pp. J4.6). Boston: American Meteorological Society.