THE INFLUENCE OF OROGRAPHY DURING DEEP MEDITERRANEAN CYCLOGENESIS 11-15 NOVEMBER 2004

The deep cyclogenesis causing a range of severe weather events took place over the Mediterranean Sea from 11- 15 November 2004. The first phase of the event was analysed by a series of numerical experiments using the MM5 forecast model. Factor separation method was applied to investigate the cyclogenetic and cyclolytic influences of orography, upper-level potential vorticity and latent heat flux from the sea as well as their mutual synergies in the cyclone initiation and movement in the lee of Atlas Mountains. Results of model simulations show that pure orographic effect is responsible for generation of the low-level shallow vortex in the lee, while upper-level PV anomaly is a dominant effect in the later stage of lee formation. In addition, upperlevel PV anomaly is crucial for advection of the system to the Mediterranean Sea, where the cyclone experienced a severe deeping in the mature stage of its development

PannEx: The Pannonian Basin Experiment

The almost closed structure of the Pannonian Basin makes it an exceptional natural laboratory for the study of the water and energy cycles, focusing on the physical processes of relevance. The Pannonian Basin Experiment, under the umbrella of the Global Energy and Water Exchanges project of the World Climate Research Programme, aims to achieve a better understanding of the Earth System components and their interactions in the Pannonian Basin. The scientific basis of the PannEx supports research that can better translate and deliver relevant climate data, information and knowledge for societal decision making through the national hydro-meteorological and climate services, research institutes and universities. We outline the framework for the development of the PannEx in the light of international efforts to provide scientific support and involve international research community in integrated approach towards identifying and increasing adaptation capacity in the face of climate change in the Pannonian Basin. As such, PannEx dedicated observational and modeling efforts also strive to reach results with the global impact. © 2018 The Author