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Global models have been used in numerical weather prediction and climate research for a long time. Numerical weather prediction models make a forecast of the atmospheric state for up to two weeks based on an optimally determined initial state.
General circulation model ECHAM
Das globale Klimamodell ECHAM wurde am Max-Planck-Institut für Meteorologie in Hamburg und von der Universität Hamburg auf der Grundlage des europäischen Wettervorhersage Modells entwickelt. Verschiedene Modellversionen werden derzeit operationell verwendet: ECHAM4 seit 1996 und ECHAM5 seit Anfang 2004.
The global atmosphere-chemistry model EMAC
The numerical model EMAC (short for ECHAM/MESSy Atmospheric Chemistry) is a modular global climate and chemistry simulation system with sub-models for the calculation of processes in the troposphere and the middle atmosphere, its interaction with the ocean and land surfaces, and anthropogenic influences.
Mesoscale models are numerical tools which resolve atmospheric processes of spatial scales between 2 and 1000 km. They solve the conservation equations of mass, momentum, internal energy and diverse air constituents with different physical approximations.
Microscale models of the atmosphere are designed to simulate small-scale flow systems (e.g. turbulence, vortices, air flows over obstacles) with a horizontal length scale ranging between a few meters and some 100 m.
Sound propagation models
The Institute of Atmospheric Physics develops and operates advanced sound propagation models. In combination with meteorological mesoscale and microscale models they describe the system of atmosphere, topography and sound waves in a consistent manner.
Contrail Cirrus Prediction Tool (CoCiP)
The "Contrail Cirrus Prediction Tool" CoCiP has been developed to simulate contrail cirrus resulting from a single flight as well as from a fleet of cruising aircraft, flight by flight, regionally or globally. The method predicts contrail cirrus for given air traffic and weather prediction data.
Radiative Transfer Models
To study the radiation in the Earth's atmosphere and its interaction with water and ice clouds, aerosols, and molecules, we are developing and using several radiative transfer models, including a Matrix-Operator model (MOM), the libRadtran package, and the three-dimensional MYSTIC code.
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