Abstract: he desire to do detailed comparisons between variational and more scalable ensemble-based data assimilation systems in a semioperational environment has led to the development of a state-of-the-art EnKF system at ECMWF. A ...

Abstract: he desire to do detailed comparisons between variational and more scalable ensemble-based data assimilation systems in a semioperational environment has led to the development of a state-of-the-art EnKF system at ECMWF, ...

Abstract: The impact of NASA Scatterometer (NSCAT) data on tropical cyclone forecasting on the European Centre for Medium-Range Weather Forecasts four-dimensional variational (4DVAR) data assimilation system is examined. Parallel ...

Abstract: The prime aim of the Atmospheric Dynamics Mission is to demonstrate measurements of vertical wind profiles from space. Extensive studies conducted by the European Space Agency over the past 15 years have culminated in the ...

Abstract: The manuscript addresses the need for tropospheric and stratospheric wind profiles and discusses capabilities to fulfil such need. To follow up the Aeolus mission an international operational UV Doppler Wind Lidar constellation ...

Abstract: nge weather prediction has become more skillful over recent decades, but forecast centers still suffer from occasional very poor forecasts, which are often referred to as ?dropouts? or ?busts.? This study focuses on European ...

Abstract: he ECMWF twentieth century reanalysis (ERA-20C; 1900?2010) assimilates surface pressure and marine wind observations. The reanalysis is single-member, and the background errors are spatiotemporally varying, derived from ...