Assimilation of Aeolus HLOS Winds in HARMONIE-AROME at Met Norway
The wind observations from the ESA Earth Explorer satellite mission Aeolus is tested in the HARMONIE-AROME 3D-VAR data assimilation system. The Aeolus measures the horizontal line of sight (HLOS) wind from the space both in the clear sky and cloudy conditions from the ground up to 30km in the atmosphere. Such observations are important for the initialization of meso-scale weather features in the LAM NWP models. We will show the result from data denial and sensitivity trials for our Arctic domain operational forecasting system, AROME-Arctic, and present tuning and quality control strategies to improve the impact of Aeolus wind data assimilation on the analysis and short range forecasts.
