Universität zu Köln

Honnert, Rachel, Efstathiou, Georgios A., Beare, Robert J., Ito, Junshi ORCID: 0000-0003-4213-4237, Lock, Adrian, Neggers, Roel ORCID: 0000-0001-9182-3050, Plant, Robert S., Shin, Hyeyum Hailey, Tomassini, Lorenzo and Zhou, Bowen (2020). The Atmospheric Boundary Layer and the Gray Zone of Turbulence: A Critical Review. J. Geophys. Res.-Atmos., 125 (13). WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 2169-8996

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Abstract

Recent increases in computing power mean that atmospheric models for numerical weather prediction are now able to operate at grid spacings of the order of a few hundred meters, comparable to the dominant turbulence length scales in the atmospheric boundary layer. As a result, models are starting to partially resolve the coherent overturning structures in the boundary layer. In this resolution regime, the so-called boundary layer gray zone, neither the techniques of high-resolution atmospheric modeling (a few tens of meters resolution) nor those of traditional meteorological models (a few kilometers resolution) are appropriate because fundamental assumptions behind the parameterizations are violated. Nonetheless, model simulations in this regime may remain highly useful. In this paper, a newly formed gray zone boundary layer community lays the basis for parameterizing gray zone turbulence, identifies the challenges in high-resolution atmospheric modeling and presents different gray zone boundary layer models. We discuss both the successful applications and the limitations of current parameterization approaches, and consider various issues in extending promising research approaches into use for numerical weather prediction. The ultimate goal of the research is the development of unified boundary layer parameterizations valid across all scales.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Honnert, Rachel UNSPECIFIED UNSPECIFIED UNSPECIFIED Efstathiou, Georgios A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beare, Robert J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ito, Junshi UNSPECIFIED orcid.org/0000-0003-4213-4237 UNSPECIFIED Lock, Adrian UNSPECIFIED UNSPECIFIED UNSPECIFIED Neggers, Roel UNSPECIFIED orcid.org/0000-0001-9182-3050 UNSPECIFIED Plant, Robert S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Shin, Hyeyum Hailey UNSPECIFIED UNSPECIFIED UNSPECIFIED Tomassini, Lorenzo UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhou, Bowen UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-326261
DOI:	10.1029/2019JD030317
Journal or Publication Title:	J. Geophys. Res.-Atmos.
Volume:	125
Number:	13
Date:	2020
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	2169-8996
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LARGE-EDDY SIMULATION; SHALLOW CUMULUS CONVECTION; MASS-FLUX PARAMETERIZATION; REFINEMENT-BASED APPROACH; PART I; HORIZONTAL RESOLUTION; STOCHASTIC PARAMETERIZATION; CLOSURE-MODEL; SCALE MODELS; MIXED LAYERS Multiple languages Meteorology & Atmospheric Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32626