Objective Objectives : To identify and minimise the tendency and forcing errors in four different atmospheric general circulation models (GCMs). The improved models will be developed and tested with special attention to simulation of regional climate over Europe and to seasonal prediction of climate. Brief Description of the Research Project : Two state-of-the-art atmospheric climate models and two simpler GCMs will be used. Different techniques will be applied to calculate the forcing errors, but the basic method, to be tested in all four GCMs, consists of a simple four dimensional data assimilation technique called nudging. In nudging a given model is constantly relaxed towards data which varies in time. In the present application these data will be the ECMWF Re-Analyses (ERA) and the magnitude of the relaxation will with different constraints be used as a measure of the models forcing errors. The work will have an iterative character where improvement of the GCMs will be guided by the temporal and spatial distribution of the forcing errors and by the characteristics of the systematic errors seen in climate runs. The improvement of the GCMs will follow two lines, improvement of physical parameterization, and developments of empirical parameterization of the forcing errors. The performance of physical parameterization will be validated with special attention to simulation of regional climate over Europe and elsewhere since such errors severely degrades the performance of regional climate models which receive boundary conditions from the GCMs. Along the second line the focus will be on testing the seasonal prediction capabilities of GCMs which include the empirical parameterization or correction of their forcing errors. Such dynamical within-forecast corrections will be compared with the more normal a posteriori (or after-the fact) empirical corrections (used e. g. in the PROVOST project). Programme(s) FP4-ENV 2C - Specific programme of research and technological development in the field of environment and climate, 1994-1998 Topic(s) 010103 - Climate variability, simulation of climate and prediction of climate change Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator DANISH METEOROLOGICAL INSTITUTE Address 100,lyngbyvej 100 2100 Koepenhagen Denmark See on map EU contribution No data Participants (4) Sort alphabetically Sort by EU Contribution Expand all Collapse all CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France EU contribution € 0,00 Address Ecole polytechnique 91128 Palaiseau See on map Other funding No data CONSORZIO INTERUNIVERSITARIO PER LA GESTIONE DEL CENTRO DI CALCOLO ELETTRONICO DELL'ITALIA NORD ORIENTALE Italy EU contribution € 0,00 Address Via magnanelli 6/3 Cantagallo See on map Links Website Opens in new window Other funding No data MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V. Germany EU contribution € 0,00 Address Bundesstra¯e 55 20146 Hamburg See on map Other funding No data METEO-FRANCE France EU contribution € 0,00 Address 42,avenue g. coriolis 42 31057 Toulouse See on map Other funding No data
