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001038891 005__ 20250220092005.0
001038891 0247_ $$2datacite_doi$$a10.34734/FZJ-2025-01702
001038891 0247_ $$2URN$$aurn:nbn:de:0001-2502130838099.131982955189
001038891 020__ $$a978-3-95806-799-8
001038891 037__ $$aFZJ-2025-01702
001038891 1001_ $$0P:(DE-Juel1)185909$$aZhang, Lijie$$b0$$eCorresponding author$$ufzj
001038891 245__ $$aModelling Secondary Circulation in Convective Boundary Layer Using Large Eddy Simulation$$f- 2024-11-04
001038891 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2024
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001038891 4900_ $$aSchriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment$$v652
001038891 502__ $$aDissertation, Bonn, 2024$$bDissertation$$cBonn$$d2024
001038891 520__ $$aMesoscale secondary circulations, which frequently arise over heterogeneous land surfaces, profoundly influence atmospheric structure and characteristics. Its structure is primarily shaped by the combined effects of wind shear and buoyancy. The turbulence generated by the secondary circulation can considerably influence the fluxes, including estimations employed in the Monin–Obukhov similarity theory and measurements in eddy covariance systems. An ever-increasing body of evidence points to secondary circulations as the primary source of the reported underestimation of heat flux (i.e., flux imbalance, FI) by 10% to 30% across various sites. A series of large eddy simulations (LES) were conducted in this PhD work to investigate the formation of secondary circulations under different conditions and to quantify its impact on flux estimations. These included one-dimensional strip-like soil moisture distribution with ambient wind speeds ranging from 0.5 
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