Combined characterisation of GOME and TOMS total ozone measurements from space using ground-based observations from the NDSC
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Data
2000-12-01
Autores
Lambert, J. C.
Van Roozendael, M.
Simon, P. C.
Pommereau, J. P.
Goutail, F.
Gleason, J. F.
Andersen, S. B.
Arlander, D. W.
Bui Van, N. A. [UNESP]
Claude, H.
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Resumo
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. © 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Earth (planet), Geophysics, Ozone, Satellites, Ground-based observations, Space research, ground-based measurement, ozone, remote sensing, stratosphere
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Advances in Space Research, v. 26, n. 12, p. 1931-1940, 2000.