Author/Authors :
J.-C. Lambert، نويسنده , , M. Van Roozendael، نويسنده , , P.C. Simon، نويسنده , , Franck Pommereau، نويسنده , , F. Goutail، نويسنده , , J.F. Gleason، نويسنده , , S.B. Andersen، نويسنده , , D.W. Arlander، نويسنده , , N.A. Bui Van، نويسنده , , H. Claude Sagi، نويسنده , , J. de La Noë، نويسنده , , M. De Mazière، نويسنده , , V. Dorokhov، نويسنده , , Michael P. Eriksen، نويسنده , , A. Green، نويسنده , , K. Karlsen T?rnkvist، نويسنده , , B.A. K?stad H?iskar، نويسنده , , E. K، نويسنده ,
Abstract :
Several years of total ozone measured from space by the ERS-2 GOME, the Earth Probe TOMS, and the ADEOS TOMS, are compared with high-quality ground-based observations associated with the Network for the Detection of Stratospheric Change (NDSC), over an extended latitude range and a variety of geophysical conditions. The comparisons with each spaceborne sensor are combined altogether for investigating their respective solar zenith angle (SZA) dependence, dispersion, and difference of sensitivity. The space- and ground-based data are found to agree within a few percent on average. However, the analysis highlights for both GOME and TOMS several sources of discrepancies: (i) a SZA dependence with TOMS beyond 80° SZA; (ii) a seasonal SZA dependence with GOME beyond 70° SZA; (iii) a difference of sensitivity with GOME at high latitudes; (iv) a difference of sensitivity to low ozone values between satellite and SAOZ sensors around the southern tropics; (v) a north/south difference of TOMS with the ground-based observations; and (vi) internal inconsistencies in GOME total ozone.
