|
Il RADAR in banda X a L'Aquila |
|
Seminario del 16 maggio 2013 |
|
Mercoledì 08 Maggio 2013 09:18 |
A numerical study of a (possible) downslope windstorm in southern Brazil Ernani de Lima NascimentoProfessor of Meteorology Dept. Physics - Universidade Federal de Santa Maria Rio Grande do Sul, Brasile Giovedì 16 Maggio 2013 h. 15:00, Sala Riunioni 1° piano Facoltà di Scienze MFN, Coppito, L’Aquila Abstract: A downslope windstorm is a mesoscale phenomenon associated with strong gusty winds that arise from the interaction between the atmospheric flow and the local terrain, being typically associated with the manifestation of atmospheric gravity waves. Downslope windstorms can last for several hours and are often accompanied by significant warming. In this presentation some preliminary evidences are shown in support of the hypothesis that a local cold-season windstorm observed in southern Brazil – known as “Vento Norte” – is in fact a topographically-induced windstorm that occurs at and just downstream of a modest but steep topographic feature. These evidences are based on surface and upper-air observations performed in central Rio Grande do Sul, the southernmost state in Brazil. It also will be shown how the numerical approach, utilizing the Weather Research and Forecasting Model (WRF), will be employed to provide relevant additional understating about the “Vento Norte”. >>> SCARICA LA LOCANDINA <<< |
English Version
Immagine Europa
