Modelle

EURAD-IM

EURopean Air pollution Dispersion – Inverse Model

WRF

Weather Research and Forecasting model

ESIAS

Ensemble for Stochastic Integration of Atmospheric Simulations

MESSy

The Modular Earth Submodel System

EURAD-IM

The underlying model and inversion system to air quality and optimisation analysis is the regional chemistry transport model EURAD-IM (EURopean Air pollution Dispersion – Inverse Model). It has been developed at the Rhenish Institute for Environmental Research at the University of Cologne (RIU) in strong collaboration with ICE-3 at Forschungszentrum Jülich. EURAD-IM is widely used and applied to several air pollution studies and analyses.

WRF

The Weather Research and Forecasting model is a mesoscale meteorological model that is developed and maintained by NCAR (National Center for Atmospheric Research) and widely used in atmospheric research. It provides a combination of numerous parameterizations to assess the atmospheric state at regional scale.

ESIAS

Both EURAD-IM and WRF are extended by an ensemble setup within the Ensemble for Stochastic Integration of Atmospheric Simulations (ESIAS). This ensemble system can provide pure ensemble forecasts and ensemble data assimilation analysis to enable the investigation of forecast uncertainties. New ensemble data assimilation techniques are developed within ESIAS to analyse the influence of input data to the predictability. The complexity of the models and the inversion methods enforce the application of high performance computing facilities as they are hosted at Forschungszentrum Jülich.

The Modular Earth Submodel System (MESSy)

MESSy is a software providing a framework for a standardized, bottom-up implementation of Earth System Models (or parts of those) with flexible complexity. "Bottom-up" means, the MESSy software provides an infrastructure with generalized interfaces for the standardized control and interconnection (=coupling) of "low-level ESM components" (dynamic cores, physical parameterizations, chemistry packages, diagnostics etc.), which are called submodels. MESSy is a multi-institutional community project: https://www.messy-interface.org/

The most frequently applied MESSy configurations used to investigate ICE-3’s research themes are:

• The global model ECHAM5/MESSy
• The global-regional modelling system MECO(n)
• The chemical box model CAABA/MECCA
• The atmospheric chemistry MESSy DWARF