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A numerical case study on footprint model performance under inhomogeneous flow conditions

Title data

Markkanen, Tiina ; Steinfeld, Gerald ; Kljun, Natascha ; Raasch, Siegfried ; Foken, Thomas:
A numerical case study on footprint model performance under inhomogeneous flow conditions.
In: Meteorologische Zeitschrift. Vol. 19 (December 2010) Issue 6 . - pp. 539-547.
ISSN 1610-1227
DOI: https://doi.org/10.1127/0941-2948/2010/0488

Abstract in another language

Two models for predicting near-surface flux and concentration footprints are compared concerning their performance in the presence of heterogeneous surface conditions. One of the models is a conventional Lagrangian backward model and the second an LES model with an embedded Lagrangian footprint model. The latter model reveals generation of thermally induced secondary circulation under such surface heterogeneity. The conventional Lagrangian backward model with simple parameterization of flow conditions mostly performs well in footprint predictions for concentrations and somewhat worse for fluxes, and fails only in areas where flow patterns are dominated by pronounced secondary circulations.

Abstract in another language

Zwei Modelle zur Bestimmung der bodennahen Fluss- und Konzentrationsfootprints werden hinsichtlich ihrer Leistungsfähigkeit für heterogene Unterlagenbedingungen verglichen. Das erste Modell war ein konventionelles Lagrangesches Rückwärtsmodell und das zweite ein LES Modell mit eingebetteter Lagrangescher Footprintmodellierung. Letzteres zeigt die Entstehung von thermisch induzierten Sekundärzirkulationen unter heterogenen Bedingungen. Das konventionelle Lagrangesche Rückwärtsmodell erfüllte weitgehend die Footprintbestimmung selbst mit einer einfachen Parametrisierung der Strömungsbedingungen. Es versagt lediglich in den Gebieten, die von den Sekundärzirkulationen dominiert wurden.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER87359
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Professorship Micrometeorology - Univ.-Prof. Dr. Thomas Foken
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 13 Aug 2015 06:11
Last Modified: 13 Aug 2015 06:11
URI: https://eref.uni-bayreuth.de/id/eprint/17951