Previous: Radiative transfer model Next: Polar Stratospheric Clouds Up: Ext. Abst.

4. Seasonnal variation of the AMF

Figure 1 shows the relative effect on ozone AMF due to ozone and density profiles variation during the year for high, middle and tropical latitudes. The amplitude of the variations is larger than the error due to instrumental and spectral analysis errors (1%<) but significant enough to have an effect on trend analysis and need to be corrected. This figure justify the use of SAOZ AMF for the whole network and indicate the amplitude of the biais in SAOZ ozone total column when looking at real-time data as provided for satellite or other instrumental validation. Effects of day to day variations cannot be accounted for using this method but will be reduced when making monthly averages (see below).

Previous: Radiative transfer model Next: Polar Stratospheric Clouds Up: Ext. Abst.