Height Resolved Ozone Climatologies in the Arctic Winter Based on Ozone Sounding and GOMOS/Envisat Profiles

Ozone climatologies are useful e.g. in satellite retrieval algorithms and for atmospheric modeling purposes. Due to various principles, resolution and geometry of column ozone measurements, it is not straightforward to compare ozone soundings with either ground based or satellite data. Furthermore, during the last years the height domain of global chemistry coupled climate models has increased significantly. In order to study the performance of a model in describing e.g. the polar vortices a high resolution ozone profile climatology is needed. As the GOMOS (Global Ozone Monitoring by Occultation of Stars) profiles are night-time measurements the data is especially valuable for this purpose. A height resolved climatology is also useful in ozone sonde studies as a residual ozone climatology (improving the total ozone estimation from sonde profiles). Star occultation remote sensing used in GOMOS/Envisat and ozone sondes are unique tools for obtaining high resolution ozone profiles from the ground to the upper mesosphere (100 km) in the polar winter. Quality controlled profiles of the GOMOS and Arctic ozone soundings were used to form a height resolved ozone climatology for the polar winter atmosphere. As a first application the climatology was tested in supplementing the ozone sonde profiles above the balloon burst point. A case study with soundings from Sodankylä is shown. The total column ozone data obtained in this way is compared to both ground based and satellite (OMI/EOS-Aura) data.