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Initial comparison of SAGE III data with GOMOS and SCIAMACHY

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Presentation on theme: "Initial comparison of SAGE III data with GOMOS and SCIAMACHY"— Presentation transcript:

1 Initial comparison of SAGE III data with GOMOS and SCIAMACHY
Ghassan Taha University of Arizona and NASA Langley Research Center W. P. Chu, and C.L. Trepte

2 SAGE III Data Product

3 SAGE III vs SAGE II O3 SAGE III: 9-May-02 Lat: 50.04oN to 50.56oN
Lon: 77o E to 164o E 7 Profiles SAGE II: Lat: 52.11oN to 52.84oN Lon: 66o E to 162o E 5 Profiles

4 SAGE III vs SAGE II NO2 SAGE III: 9-May-02 Lat: 50.04oN to 50.56oN
Lon: 77o E to 164o E 7 Profiles SAGE II: Lat: 52.11oN to 52.84oN Lon: 66o E to 162o E 5 Profiles

5 SAGE III vs SAGE II Aerosol Extinction 1020 nm
9-May-02 Lat: 50.04oN to 50.56oN Lon: 77o E to 164o E 7 Profiles SAGE II: Lat: 52.11oN to 52.84oN Lon: 66o E to 162o E 5 Profiles

6 SAGE III vs SAGE II Aerosol Extinction 525 nm
9-May-02 Lat: 50.04oN to 50.56oN Lon: 77o E to 164o E 7 Profiles SAGE II: Lat: 52.11oN to 52.84oN Lon: 66o E to 162o E 5 Profiles

7 SAGE III data comparison summary (O3)
Lat = 3-5 o Lon = o -Payern Ozonesonde data provided by Rene Stubi, Swiss Meteorological Institute, MCH -Hohenpeissenberg Ozonesonde data provided by Wolfgang Steinbrecht, Deutscher Wetterdienst, DWD -Hohenpeissenberg Lidar data provided by Hans Claude, Deutscher Wetterdienst, DWD -Bern MWR data provided by Niklaus Kaempfer, University of Bern, UBERN

8 SAGE III data comparison summary (NO2)
Lat = 3-5 o Lon = o

9 SAGE III vs. GOMOS (O3) 302 Profile Lat = 5 o Lon = 15 o time = 3h

10 SAGE III vs. GOMOS -1

11 SAGE III vs. GOMOS -2

12 SAGE III vs. GOMOS -3

13 SAGE III vs. GOMOS -4

14 SAGE III vs. GOMOS (NO2) 302 Profile Lat = 5 o Lon = 15 o time = 3h

15 SAGE III vs. GOMOS -1

16 SAGE III vs. GOMOS -2

17 SAGE III vs. SCIAMACHY limb Scattering (NO2)
SCIAMACHY NO2 Processed by Chris Sioris (Smithsonian Astrophysical Observatory) -TH correction of 2.6 km -Photochemistry correction for local sunrise.

18 SAGE III vs. SCIAMACHY Solar Occultation (NO2)
SCIAMACHY NO2 Processed by Jerome Meyer, Anke Schliesier (Bremen University).

19 Summary and Conclusion
GOMOS O3 agree to 10% of SAGE II in the km. There is an obvious bias at higher altitude, although it shows similar shape. GOMOS NO2 in general is noisy, but when it averaged, it agree to 10% of SAGE III in the km. SCIAMACHY limb scattering NO2 retrieval by (SAO) is encouraging, and agree to 10% in the km. SCIAMACHY Solar occultation NO2 retrieval by (Bremen Group) is good, and agree to 20-25% in the km.

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