Evaluation of large-eddy simulations forced with mesoscale model output for a multi-week period during a measurement campaign

verfasst von

Rieke Heinze, Christopher Moseley, Lennart Nils Böske, Shravan Kumar Muppa, Vera Maurer, Siegfried Raasch, Bjorn Stevens

Abstract

Large-eddy simulations (LESs) of a multi-week period during the HD(CP)² (High-Definition Clouds and Precipitation for advancing Climate Prediction) Observational Prototype Experiment (HOPE) conducted in Germany are evaluated with respect to mean boundary layer quantities and turbulence statistics. Two LES models are used in a semi-idealized setup through forcing with mesoscale model output to account for the synoptic-scale conditions. Evaluation is performed based on the HOPE observations. The mean boundary layer characteristics like the boundary layer depth are in a principal agreement with observations. Simulating shallow-cumulus layers in agreement with the measurements poses a challenge for both LES models. Variance profiles agree satisfactorily with lidar measurements. The results depend on how the forcing data stemming from mesoscale model output are constructed. The mean boundary layer characteristics become less sensitive if the averaging domain for the forcing is large enough to filter out mesoscale fluctuations.

Organisationseinheit(en)

Institut für Meteorologie und Klimatologie

Externe Organisation(en)

Max-Planck-Institut für Meteorologie
Universität Hohenheim
Karlsruher Institut für Technologie (KIT)
Deutscher Wetterdienst (DWD)

Typ

Artikel

Journal

Atmospheric chemistry and physics

Band

17

Seiten

7083-7109

Anzahl der Seiten

27

ISSN

1680-7316

Publikationsdatum

15.06.2017

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atmosphärenwissenschaften

Ziele für nachhaltige Entwicklung

SDG 13 – Klimaschutzmaßnahmen

Elektronische Version(en)

https://doi.org/10.5194/acp-17-7083-2017 (Zugang: Offen)