Wind speed profiles measuredduring one year by means of a SODAR-RASS system located within a large park were examined for the Urban Boundary Layer (UBL) over Rome, Italy. These data, combined with ultrasonic anemometer and temperature measurement performed near the ground were used to analyze the vertical structure of the boundary layer. About 52000 vertical profiles of wind speed and temperature were used for the analysis, allowing investigation for a large variety of stability conditions. The applicability of the Monin-Obukhov (MO) similarity theory - developed over rural terrain - was tested up to 200 m above ground level. The results show a gradual, continuous worsening with height of the MO similarity performance for all stability conditions, reaching maximum errors of the order of 300% at 200 m.
Wind profiles in an urban area / A., Pelliccioni; Monti, Paolo; C., Gariazzo; Leuzzi, Giovanni. - STAMPA. - (2011), pp. 574-578. (Intervento presentato al convegno 14th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2011 tenutosi a Kos Island; Greece nel 2-6 Ottobre 2011).
Wind profiles in an urban area
MONTI, Paolo;LEUZZI, Giovanni
2011
Abstract
Wind speed profiles measuredduring one year by means of a SODAR-RASS system located within a large park were examined for the Urban Boundary Layer (UBL) over Rome, Italy. These data, combined with ultrasonic anemometer and temperature measurement performed near the ground were used to analyze the vertical structure of the boundary layer. About 52000 vertical profiles of wind speed and temperature were used for the analysis, allowing investigation for a large variety of stability conditions. The applicability of the Monin-Obukhov (MO) similarity theory - developed over rural terrain - was tested up to 200 m above ground level. The results show a gradual, continuous worsening with height of the MO similarity performance for all stability conditions, reaching maximum errors of the order of 300% at 200 m.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
