Precision measurements of stratospheric ozone profiles by rocket-borne optical ozonesondes

Sunset observations of the upper stratospheric and mesospheric ozone were made at Uchinoura (31.25°N, 131.08°E) with rocket-borne optical ozonesondes, which consist of multi-color solar ultraviolet radiometers and sun tracking devices. Three ozone density profiles were obtained in this study. A comparison with the 30°N zonal and monthly average of the interim reference ozone model shows a variability that our present ozone mixing ratios below −50 km are larger in January and February and smaller in September than those of the model.