Forecast and simulation of stratospheric ozone filaments: A validation of a high-resolution potential vorticity advection model by airborne ozone lidar measurements in winter 1998/1999

摘要: In the framework of Third European Stratospheric Experiment on Ozone project Meridional Transport in Lower Stratosphere (METRO) an airborne ozone lidar has been flown French Falcon (Mystere 20) during winter 1998/1999 to investigate polar and subtropical filaments at midlatitudes. The objective METRO is quantify proportion transport air their mixing into midlatitude masses. dynamical evolution northern hemisphere was simulated using a high-resolution advection model for potential vorticity (PV): Modele Isentropique de Mesoechelle l'Ozone Stratospherique par Advection (MIMOSA). To validate further studies, it first utilized forecast appearance inside range airplane so that each flight campaign could be planned precisely. vertical distribution measured along tracks then compared respective PV by model. Correlation coefficients between 0.5 0.7 found over altitude where were observed show good agreement filaments. An improvement correlation up 0.8 horizontal shifting profiles against showed small displacements less than 1° modeled can occur. These explained uncertainties input wind velocity data data. Thus we conclude MIMOSA reproduces position, size, structure intrusions well expected accuracy. suitable tool studies quantification global, long-term mid-latitudes.