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Statistical Investigation of Flow Structures in Different Regimes of the Stable Boundary Layer
SMHI, Research Department, Climate research - Rossby Centre.
2019 (English)In: Boundary-layer Meteorology, ISSN 0006-8314, E-ISSN 1573-1472, Vol. 173, no 2, p. 143-164Article in journal (Refereed) Published
Abstract [en]

A combination of methods originating from non-stationary time-series analysis is applied to two datasets of near-surface turbulence in order to gain insights on the non-stationary enhancement mechanism of intermittent turbulence in the stable atmospheric boundary layer (SBL). We identify regimes of SBL turbulence for which the range of time scales of turbulence and submeso motions, and hence their scale separation (or lack of separation), differs. Ubiquitous flow structures, or events, are extracted from the turbulence data in each flow regime. We relate flow regimes characterized by very stable stratification, but differing in the dynamical interactions and in the transport properties of different scales of motion, to a signature of flow structures thought to be submeso motions.

Place, publisher, year, edition, pages
2019. Vol. 173, no 2, p. 143-164
National Category
Climate Research
Research subject
Climate
Identifiers
URN: urn:nbn:se:smhi:diva-5436DOI: 10.1007/s10546-019-00464-1ISI: 000487899100001OAI: oai:DiVA.org:smhi-5436DiVA, id: diva2:1360874
Available from: 2019-10-14 Created: 2019-10-14 Last updated: 2019-10-14Bibliographically approved

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Belusic, Danijel

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