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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 NASA Langley Research Center. SAGE III Data Product. SAGE III vs SAGE II O 3. SAGE III : 9-May-02 Lat: 50.04 o N to 50.56 o N

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initial comparison of sage iii data with gomos and sciamachy

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

NASA Langley Research Center

sage iii vs sage ii o 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:

9-May-02

Lat: 52.11oN to 52.84oN

Lon: 66o E to 162o E

5 Profiles

sage iii vs sage ii no 2
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:

9-May-02

Lat: 52.11oN to 52.84oN

Lon: 66o E to 162o E

5 Profiles

sage iii vs sage ii aerosol extinction 1020 nm
SAGE III vs SAGE II Aerosol Extinction 1020 nm

SAGE III:

9-May-02

Lat: 50.04oN to 50.56oN

Lon: 77o E to 164o E

7 Profiles

SAGE II:

9-May-02

Lat: 52.11oN to 52.84oN

Lon: 66o E to 162o E

5 Profiles

sage iii vs sage ii aerosol extinction 525 nm
SAGE III vs SAGE II Aerosol Extinction 525 nm

SAGE III:

9-May-02

Lat: 50.04oN to 50.56oN

Lon: 77o E to 164o E

7 Profiles

SAGE II:

9-May-02

Lat: 52.11oN to 52.84oN

Lon: 66o E to 162o E

5 Profiles

sage iii data comparison summary o 3
SAGE III data comparison summary (O3)

Lat = 3-5 o

Lon = 10-25 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

sage iii data comparison summary no 2
SAGE III data comparison summary (NO2)

Lat = 3-5 o

Lon = 10-25 o

sage iii vs gomos o 3
SAGE III vs. GOMOS (O3)

302 Profile

Lat = 5 o

Lon = 15 o

time = 3h

sage iii vs gomos no 2
SAGE III vs. GOMOS (NO2)

302 Profile

Lat = 5 o

Lon = 15 o

time = 3h

sage iii vs sciamachy limb scattering no 2
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.

sage iii vs sciamachy solar occultation no 2
SAGE III vs. SCIAMACHY Solar Occultation (NO2)

SCIAMACHY NO2

Processed by Jerome Meyer,

Anke Schliesier (Bremen

University).

summary and conclusion
Summary and Conclusion
  • GOMOS O3 agree to 10% of SAGE II in the 20-50 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 23-35 km.
  • SCIAMACHY limb scattering NO2 retrieval by (SAO) is encouraging, and agree to 10% in the 20-33 km.
  • SCIAMACHY Solar occultation NO2 retrieval by (Bremen Group) is good, and agree to 20-25% in the 18-34 km.