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Preliminary Results of Trace Gas Retrieval from SCIAMACHY Data: Insights and Validation

The Bremen group presents preliminary results from SCIAMACHY, focusing on retrieving trace gases from uncalibrated level 0 data utilizing nadir, limb, and occultation observation geometries. The initial findings indicate that SCIAMACHY is functioning optimally. Notable results include differential retrievals of O3 using Huggins and Chappuis bands and NO2 measurements. These observations build confidence in the data quality. A detailed validation review is scheduled for December, where further validation of SCIAMACHY products will be discussed.

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Preliminary Results of Trace Gas Retrieval from SCIAMACHY Data: Insights and Validation

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  1. Early Results from SCIAMACHY H. Bovensmann, M. Buchwitz, J. Kaiser, J. Meyer, S. Noel, A. Schlesier, J. Skupin, A. Richter, A. Rozanov, V. Rozanov, Ch. v. Savigny, M. Wuttke, J. P. BurrowsUniversity of BremenSeptember 2002

  2. Remark • These first results are a preliminary attempt of the Bremen group on retrieving trace gases from uncalibrated level 0 (raw) data in the three observation geometries nadir, limb and occultation. • These preliminary results should give confidence that SCIAMACHY is in good shape. • First results on validation of SCIAMACHY products will be reported at the Validation Review in the second week of December.

  3. Ozon from Limb Preliminary results! Rozanov: Differential retrieval employing O3 Huggins and Chappuis bands Savigny: 3 wavelength retrieval employing O3 Chappuis bands

  4. O3 SCIAMACHY and GOME O3 measured with SCIAMACHY: Assimilated GOME O3 Data: CTM assimilation (NCAR-ROSE) Courtesy of Michael Bittner (DLR-DFD) Savigny et al. 07/2002 Preliminary results!

  5. NO2 from limb Preliminary results! A. Rozanov et al. 07/2002 SCIAMACHY: 58° N, 110° W, SZA = 68 deg POAM: 62° N, 110° W Green curve: simulation with 2 D Model at 58° N, 110° W, SZA = 68 deg Blue curves: simulation with 2 D Model at corresponding SZA. NOx wasscaled to the POAM measurement and used as input to simulate thediurnal variation of the NO2 vertical profile backward to SZA = 68 deg. (All model runs by Miriam von Koenig)

  6. First observations of noctilucent clouds UV limb radiance profiles with NLC without NLC Orbit 1779, state 2, lat: 32° N, long: 21° E Orbit 1779, state 23, lat: 81° N, long: 87° E NLC/PMC

  7. Global Mesospheric O3 Preliminary results! Savigny et al. 08/2002

  8. NO2 Profile from Solar Occulation compared to POAM III J. Meyer & A. Schlesier 07/2002 Preliminary results!

  9. GOME – SCIA Nadir:NO2 from 425 – 450 nm Preliminary results !!

  10. GOME – SCIA Nadir: NO2 from 425 – 450 nm

  11. Conclusion • SCIAMACHY is delivering very exciting data • These preliminary results gives confidence that SCIAMACHY is in good shape. • We can expect a high data quality after validation and optimisation of the operational data products.

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