Aktuelle Projekte
Forschungsprojekte
Model-based city planning and application in climate change (MOSAIK-2)
Leitung: | Björn Maronga, Siegfried Raasch, Günter Groß, Matthias Sühring |
Bearbeitung: | Tobias Gronemeier, Johannes Schwenkel, Matthias Sühring |
Laufzeit: | 2019-2022 |
Förderung durch: | BMBF |
Kurzbeschreibung: | The central goal of MOSAIK-2 within the 2nd phase of Urban Climate Under Change ([UC]2) is the further development of PALM-4U as a tool for practical applications by local authorities as well as for scientific applications. |
Large-eddy simulation study on the effect of vehicle-induced turbulence and exhaust fumes on wind flow and pollutant dispersion in urban street canyons (LEAF)
Leitung: | |
Bearbeitung: | Giovanna Motisi |
Laufzeit: | 2018-2021 |
Förderung durch: | DFG |
Kurzbeschreibung: | The main objective of the proposed project is to evaluate the effects of traffic-induced turbulence and exhaust fumes on the turbulent flow and transport of pollutants in urban street canyons by means of high-resolution larg-eddy simulations, taking into account the effects of vegetation and atmospheric stability. |
A new LES-based system for short-range forecasting of near-surface high impact weather at airports (ALERT)
Leitung: | |
Bearbeitung: | Helge Knoop |
Laufzeit: | 2016-2020 |
Förderung durch: | Deutscher Wetterdienst (DWD) |
Kurzbeschreibung: | The project aims to improve the local forecast of atmospheric surface layer processes and quantities for airport areas with a focus on the precise forecast of critical events such as radiation and advection fog as well as wind gusts by using high-resolution large-eddy simulations (LES). |
High-resolution numerical studies on the effect of turbulence on nocturnal radiation fogs
Leitung: | |
Bearbeitung: | Johannes Schwenkel |
Laufzeit: | 2015-2018 (phase 1), 2019-2021 (phase 2) |
Förderung durch: | DFG |
Kurzbeschreibung: | In this project, high-resolution large-eddy simulations (LES) will be used to investigate the effect of turbulence on nocturnal radiation fogs. The LES model PALM will be used at very high resolution in the order of 1 m with both an Eulerian bulk cloud physics scheme and an embedded Lagrangian particle model that allows for explicitly resolving aerosols and fog droplets will be employed. This innovative approach allows for studying fog droplet-turbulence interactions for the first time with LES. The aim of this study is to achieve a comprehensive view on the key parameters that determine the life cycle of radiation fog as well as its three-dimensional macro- and microstructure. Moreover, the effect of a nocturnal fog layer on the morning transition and the daytime boundary layer will be studied. The effect of surface heterogeneity on nocturnal radiation fog will be investigated by means of LES with prescribed idealized regular and observed irregular surface heterogeneities. |