OZONE LAYER ABOVE CHINA AS SEEN BY SATELLITES

The Dragon-Star project work has concentrated on the studies of the middle atmosphere in global and local scale using satellite and ground based measurements as well modelling. In this article we present results from analy- sis of measurements of ozone profiles from GOMOS on ENVISAT and total ozone measurements from OMI on EOS-Aura. The ozone layer above China has been shown to display both characteristics of the tropical ozone layer and the more dynamic polar ozone layer. The annual variation in the northern part of China is large whereas the southern part situation is relatively stable. On daily scale ozone can show large variations because of plane- tary wave disturbances and more local weather patterns. A peculiar low ozone values are evident above the Ti- betan plateau.