Combined closure single-column atmospheric boundary layer model

Árpád Bordás, Tamás Weidinger

Research output: Contribution to journalArticle

Abstract

This paper presents a development of the first order combined closure (local and nonlocal) single-column atmospheric boundary layer model. The model simulates the turbulent mixing of sensible heat, moisture, and momentum as a split between small scale (subgrid) and large scale (supergrid) processes according to the estimated ratio between local and nonlocal mixing. To verify the validity of the model, an evaluation process was conducted. The evaluation process included controlled offline numerical experiments and tests using the Wangara Experiment database. The obtained vertical profiles and estimated boundary layer heights are in good agreement with the Wangara observation data. Furthermore, uncertainty range affected by the choice of profile functions when estimating the ratio between local and nonlocal mixing processes was analyzed.

Original languageEnglish
Pages (from-to)379-398
Number of pages20
JournalIdojaras
Volume119
Issue number3
Publication statusPublished - Sep 1 2015

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Keywords

  • Atmospheric boundary layer
  • Combined (local and nonlocal) approach
  • Single-column model
  • Turbulent mixing
  • Wangara Experiment

ASJC Scopus subject areas

  • Atmospheric Science

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