Distribution and characteristics of global total column ozone（60°N—60°S）data retrieved from the Atmospheric Infrared Sounder（AIRS）

the TIROS Operational Vertical Sounder（TOVS） and Total Ozone Mapping Spectrometer（TOMS） during 2003—2005 are investigated and compared in this study

showing that the total column ozone in North hemisphere has an evident seasonal variation with a maximum of 322.25DU in spring and a minimum of 277.83DU in autumn

decreasing by 45DU.Whereas it is unapparent in South hemisphere.The global total column ozone is latitude-dependent with about 250—270DU at lower latitude and 294/279DU at North hemisphere/South Hemisphere higher latitude.Comparison among three datasets indicates the global mean total column ozone retrieved from the AIRS is larger by 3—5DU than those from TOVS and TOMS

and significant abnormality appears in Antarctic continent and deserts.A comparison of satellite ozone data with ground-based data shows that TOMS retrieved value is lower than ground-based measurements.Further evidence depicts that AIRS/TOMS retrieved values have the moderately good agreement and relationship with the ground-based ozone data.