Ralf Weisse

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An analysis of the storm climate of the Northeast Atlantic and the North Sea as simulated by a regional climate model for the past 44 years is presented. The model simulates the period 1958-2001 driven by the National Center for Environmental Prediction's (NCEP's) weather re-analysis. Comparison with observations shows that the model is capable of(More)
Climatic fluctuations on a decadal timescale in the North Atlantic in a global ocean general circulation model were considered. The analysis was carried out for the 3800-year sto-chastic forcing simulation of Mikolajewicz and Maier-Reimer in which the Hamburg Large-Scale Geostrophic ocean model was driven by monthly climatologies of wind stress, air(More)
Regional atmospheric models have matured in the past few years. They now find broad applications that range from process studies, reconstruction of recent and paleoclimates, simulation of pathways and deposition of anthropogenic matter, construction of plausible scenarios of future climate change, and regional weather analysis. The initial major(More)
Sea level rise, especially combined with possible changes in storm surges and increased river discharge resulting from climate change, poses a major threat in low-lying river deltas. In this study we focus on a specific example of such a delta: the Netherlands. To evaluate whether the country's flood protection strategy is capable of coping with future(More)
Interannual fluctuations in the Antarctic Circumpolar Current (ACC) were considered. In the present study we analyze a mode of variability in the Hamburg Large-Scale Geostrophic ocean general circulation model which was driven by stochastic atmospheric forcing. The short-term atmospheric weather fluctuations were represented by a number of spatially(More)
The paper describes the initial efforts in a project whose objective is to obtain a 40-year hindcast of wind, sea level and wave climatology for European waters. The 40-year global atmospheric re-analysis carried out by the (NCAR) will be used as forcing of limited area atmospheric models. The fine grid atmospheric fields will be used to force(More)
In this article, we discuss the advisory capacity of climate science for political, economical and societal decisions. To provide options, open up perspectives and to enhance the understanding for the dynamics of climate is a task we name climate service. After a general discussion, experiences of providing this service on a regional and local scale during(More)