The nature of small-scale non-turbulent variability in a mesoscale model

Ivan Guttler, Danijel Belusic

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)


Previous studies have shown that numerical diffusion plays a crucial role in the ability of mesoscale models to reproduce features similar to sub-meso motions found in observations, particularly in terms of spectral energy distribution. In this study, the impacts of surface heterogeneity and frequency of lateral boundary coupling are investigated as potential factors governing or modulating the occurrence of sub-meso motions. The spectral energy distribution after the reduction of model diffusion is analysed in detail. It is suggested that a combination of physical and numerical mechanisms is responsible for the final spectral shape.
Original languageEnglish
Pages (from-to)169 - 173
Number of pages5
JournalAtmospheric Science Letters
Issue number3
Publication statusPublished - 2012

Cite this