Relative Impact of Polar Winds in HARMONIE-AROME
In the framework of the Applicate project (https://applicate.eu), ECMWF (European Centre for Medium-Range Weather Forecasts) performed several observation denial experiments. Access to the results of these experiments opens a good opportunity for us to accomplish the tasks described in our Alertness project to study the impact of Arctic observations with our operational regional Arctic model AROME-Arctic, which is based on the HARMONIE-AROME numerical weather prediction system.
This presentation discusses the relative impact of the polar winds in HARMONIE-AROME regional model through observing system experiments (OSE) during YOPP Arctic winter and summer special observing periods (SOP); The relative impact of observation is assessed through local data assimilation as well as through lateral boundary conditions.
