Using similarity theory to parameterize mesoscale heat fluxes generated by subgrid-scale landscape discontinuities in GCMs

B. H. Lynn, F. Abramopoulos, R. Avissar

Research output: Contribution to journalArticlepeer-review

Abstract

Similarity theory was used to develop a parameterization of mesoscale heat fluxes induced by landscape discontinuities for large-scale atmospheric models (eg, general circulation models). For this purpose, Buckingham Pi theory, a systematic method for performing dimensional analysis, was used to derive a set of dimensionless groups, which describes the large-scale atmospheric background conditions, the spatial variability of surface sensible heat flux, and the characteristic structure of the landscape. These dimensionless groups were used to calculate the coefficients of a fourth-order Chebyshev polynomial, which represents the vertical profiles of dimensionless mesoscale heat fluxes obtained for a broad range of large-scale atmospheric conditions and different landscapes. -from Authors

Original languageEnglish (US)
Pages (from-to)932-951
Number of pages20
JournalJournal of Climate
Volume8
Issue number4
DOIs
StatePublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Atmospheric Science

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