Multiple scales analysis of precipitating clouds: Feasibility study for selected cloud types

• Applicants: Professor Dr. Dieter Etling; Professor Dr.-Ing. Rupert Klein
• Subject Area: Atmospheric Science
• Term: from 2004 to 2009
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5426006

In this project a scale analysis of the full equations for the moist atmosphere including bulk representations of phase changes and precipitation will be performed. Using the method of multiple scales asymptotics, reduced sets of equations for simplified prototype stratiform- and cumulus clouds will be derived. These reduced equations can be used (i) as a guideline in formulating subgrid models of cloud formation and precipitation in large scale numerical weather prediction models, and (ii) to define analytically motivated test problems for computational codes that solve the full governing equations with bulk microphysics parameterizations.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1167: Quantitative Precipitation Forecast PQP (Praecipitationis Quantitativae Praedictio)