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Bremen Limb Workshop Satellite group First Heidelberg SCIA Limb Results Thomas Wagner,

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Presentation on theme: "Bremen Limb Workshop Satellite group First Heidelberg SCIA Limb Results Thomas Wagner,"— Presentation transcript:

1 Bremen Limb Workshop Satellite group First Heidelberg SCIA Limb Results Thomas Wagner, S. Beirle, C. Frankenberg, C. v. Friedeburg, M. Grzegorski, J. Hollwedel, S. Kühl, M. F. A. Khokhar, S. Kraus, S. Shangavi, W. Wilms-Grabe, M. Wenig, U. Platt Institut für Umweltphysik, University of Heidelberg, Germany Fit parameters and results Influence of wavelength range & reference spectrum First results Conclusions & outlook

2 Bremen Limb Workshop Satellite group Reference Spectra: O3:Bogumil et al., 223 & 243 K NO2:Vandaele et al., 220 K BrO:Wilmouth et al., 228 K OClO:Krominga et al., 213 K Ring:Calculated (MFC) Polarisation:Ln(Xi) & Ln(Eta) from SCIA Keydata Polynomial:Degree 5 Fraunhofer:One Limb Spectrum per orbit (at lowest tangent height) Shift:Spectrum shifted against Fraunhofer reference (linked to trace gas cross sections)

3 Bremen Limb Workshop Satellite group NO2 BrO O3 Ring NO2 Analysis of limb spectrum at 26.5 km with respect to –2.5 km tangent height

4 Bremen Limb Workshop Satellite group NO2 Analysis of limb spectrum at 26.5 km with respect to –2.5 km tangent height Eta Xi

5 Bremen Limb Workshop Satellite group NO2 Profiles along SCIA Orbit 4615 (DSCDs as function of tangent hight)

6 Bremen Limb Workshop Satellite group Comparison for NO2 analysis with limb or direct sun reference Limb reference Direct sun reference

7 Bremen Limb Workshop Satellite group Direct sun reference Limb reference Spectral shift during a limb scan

8 Bremen Limb Workshop Satellite group BrO Analysis of limb spectrum at 23.3 km with respect to 26.5 km tangent height BrO NO2 O3 Ring

9 Bremen Limb Workshop Satellite group BrO Analysis of limb spectrum at 23.3 km with respect to 26.5 km tangent height Xi Eta

10 Bremen Limb Workshop Satellite group BrO Analysis in different spectral ranges 1.03e e e e14

11 Bremen Limb Workshop Satellite group BrO DSCD for different wavelength ranges

12 Bremen Limb Workshop Satellite group Comparison for BrO analysis with limb or direct sun reference Direct sun reference Limb reference

13 Bremen Limb Workshop Satellite group Comparison for O3 analysis with limb or direct sun reference Direct sun reference Limb reference

14 Bremen Limb Workshop Satellite group Comparison of profile heights BrO NO2 O3

15 Bremen Limb Workshop Satellite group Latitude O3 SCD as function of latitude and tangent height (orbit 6415, )

16 Bremen Limb Workshop Satellite group Latitude NO2 SCD as function of latitude and tangent height (orbit 6415, )

17 Bremen Limb Workshop Satellite group Latitude BrO SCD as function of latitude and tangent height (orbit 6415, )

18 Bremen Limb Workshop Satellite group Conclusions & Outlook Development of limb UV analysis of BrO, NO2 and O3 Polarisation sensitivity complicates DOAS fit Broad spectral range (337 – 357 nm) seems to give most reliable (stable) results Dependence on altitude & latitude seems to be reasonable Determination of absolute SCDs (choice of Fraunh. reference) Further trace gases (OClO) and wavelength ranges (vis) Application of radiative transport and profile inversion


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