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start [2021/09/24 12:30] – [Current Research] neggers | start [2022/09/14 16:57] – [High-resolution simulation] burchart | ||
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The research group for Integrated Scale-Adaptive Parameterization and Evaluation (InScAPE) of Prof. Roel Neggers aims to develop scale-adaptive parameterizations of small-scale turbulent/ | The research group for Integrated Scale-Adaptive Parameterization and Evaluation (InScAPE) of Prof. Roel Neggers aims to develop scale-adaptive parameterizations of small-scale turbulent/ | ||
- | ==== Parameterization | + | ==== Conceptual modeling |
- | General Circulation Models (GCMs) used for numerical weather prediction and climate simulation generally consist of a set of primitive equations describing atmospheric flow that are discretized in time and space. The current efficiency of supercomputers only allows spatial resolutions in the order of kilometers (weather prediction) or tens of kilometers (climate simulation). As a result of this limitation, many atmospheric processes remain unresolved. These processes include turbulence, convection, clouds and precipitation. As a consequence, | + | General Circulation Models (GCMs) used for numerical weather prediction and climate simulation generally consist of a set of primitive equations describing atmospheric flow that are discretized in time and space. The current efficiency of supercomputers only allows spatial resolutions in the order of kilometers (weather prediction) or tens of kilometers (climate simulation). As a result of this limitation, many atmospheric processes remain unresolved. These processes include turbulence, convection, clouds and precipitation. As a consequence, |
==== High-resolution simulation ==== | ==== High-resolution simulation ==== | ||
- | {{:snapshot_lwc-iwc_pascal-exp003-highfreq_v2.mp4?&600|Paraview visualization | + | {{:movie_joyce_tsi_dales_20140724-hr014_rs256_20s.mp4?&500|Time lapse movie of simulated cumulus clouds on 24 July 2014 at the JOYCE site. The ray tracing renderings are generated using the open source Blender tool. A hemispheric projection |
- | To achieve its science goals the InScAPE group makes use of a hierarchy of atmospheric models. These can be run on platforms ranging from simple workstations to supercomputers. One of the main " | + | To achieve its science goals the InScAPE group makes use of a hierarchy of atmospheric models. These can be run on platforms ranging from simple workstations to supercomputers. One of the main " |
- | In the InScAPE | + | At InScAPE various LES codes are used, including |
More details of our LES codes can be found in the [[models|overview of models]]. | More details of our LES codes can be found in the [[models|overview of models]]. | ||
+ | |||
==== Testbeds ==== | ==== Testbeds ==== | ||
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The InScAPE parameterization testbed is described in more detail on [[testbed|testbed info page]]. | The InScAPE parameterization testbed is described in more detail on [[testbed|testbed info page]]. | ||
- | ==== Current | + | ==== Selected |
- | **[[edmf|EDMF]]** | + | **[[arcticclouds|Arctic clouds]]** |
- | We are continuously working on the improvement and development | + | Clouds in the Arctic appear in many forms. Much is still not understood about their behavior, which is for a large part due to the difficulty in sampling such clouds at high latitudes. At InScAPE we use dedicated large-eddy simulation based on available measurements to study such clouds in a virtual laboratory setting. Among others, we use data from recent field campaigns, including two recent cruises by the Polarstern Research Vessel |
- | **[[greyzone|Greyzone]]** | + | **[[sizedistribution|Cloud geometry]]** |
- | A big challenge for parameterization development are the increasing resolutions | + | Gaining insight into the morphology |
+ | |||
+ | **[[edmf|EDMF]]** | ||
+ | We are continuously working on the further development of the EDMF (Eddy Diffusivity Mass Flux) framework for describing transport | ||
- | **[[sizedistribution|Cloud size distribution]]** | + | **[[greyzone|Convective Grey Zone]]** |
- | Understanding patterns in shallow cumulus cloud populations | + | The ever increasing resolution of NWP models |
==== High Performance Computing (HPC) ==== | ==== High Performance Computing (HPC) ==== | ||
- | To perform the various model simulations we make use of HPC facilities. Thesse include the CHEOPS cluster at the Regional Computing Center of the university of Cologne ([[http:// | + | To perform the various model simulations we make use of HPC facilities. Thesse include the CHEOPS cluster at the Regional Computing Center of the university of Cologne ([[http:// |
start.txt · Last modified: 2024/01/23 14:13 by kiszler