SCALABLe: Scale-aware modeling of the ABL and its impact on deep convection

SCALABLe is a part of the Hans Ertel Centre for Weather Research (HErZ) - a cooperation network between the Deutscher Wetterdienst (DWD) and leading meteorological research institutions in Germany. The network focuses on several research areas, including data assimilation and predictability, model development, climate monitoring and Earth system forecasting, integration of measurement data and modelling, and optimal use of weather and climate information.

The overarching goal of SCALABLe is to better understand the physical processes in the transient atmospheric boundary layer (ABL) over different terrain types and improve their representation in numerical weather prediction across scales. A better representation of the strength and variability of ABL turbulence and convection will result in an improved, less scale-dependent, interaction between subgrid and resolved processes and thereby help reduce long-standing model biases.

The project addresses the following objectives:

- Detailed analysis of ABL turbulence and convection in transitional and complex regimes to inform new formulations of the stochastic scheme for shallow clouds in transitional regimes.

- Evaluate cloudiness in the ICON model by exploiting new high-resolution satellite data products.

- Deliver a scale-aware stochastic representation of ABL turbulence and shallow convection, evaluate its impact on typical biases of numerical weather and climate models and compare to available ABL configurations in ICON using the data of several observational campaigns as a reference.

- Foster collaboration within HErZ by providing guidance in modeling from large-eddy simulations to numerical weather prediction, selection of case studies and reference ICON simulations, and through joint research and teaching activities.

For further information please visit our HErZ Web Page: https://www.hans-ertel-zentrum.de.