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Validation of conventional Lagrangian stochastic footprint models against LES driven footprint estimates

Title data

Markkanen, Tiina ; Steinfeld, Gerald ; Kljun, Natascha ; Raasch, Siegfried ; Foken, Thomas:
Validation of conventional Lagrangian stochastic footprint models against LES driven footprint estimates.
In: Atmospheric Chemistry and Physics Discussions. Vol. 9 (February 2009) Issue 1 . - pp. 4195-4230.
ISSN 1680-7375
DOI: https://doi.org/10.5194/acpd-9-4195-2009

Abstract in another language

In this study we compare the performance of conventional Lagrangian stochastic (LS)footprint models that use parameterised flow field characteristics with results of a Lagrangian trajectory model embedded in a large eddy simulation (LES) framework. The two conventional models follow the particles backward and forward in time while the trajectories in LES only evolve forward in time. We assess their performance in unstably and neutrally stratified boundary layers at observation levels covering the wholedepth of the atmospheric boundary layer. We present a concept for footprint model comparison that can be applied for 2-D footprints and demonstrate that comparison of only cross wind integrated footprints is not sufficient for purposes facilitating two dimensionalfootprint information. Because the flow field description among the three models is most realistic in LES we use those results as the reference in the comparison. Wefound that the agreement of the two conventional models against the LES is generally better for intermediate measurement heights and for the convective case, whereas the two conventional flux footprint models agree best under near neutral conditions.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER67624
Institutions of the University: 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
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 21 Aug 2015 06:49
Last Modified: 21 Aug 2015 06:49
URI: https://eref.uni-bayreuth.de/id/eprint/18438