1. BrO vertical profiles from SCIAMACHY limb measurements: Validation of scientific product using balloon-borne and ground-based measurements
Retrievals by : S. Kühl7 , A. Rozanov1, C. Sioris3, J. Pukite7, H. Bovensmann1,
J. P. Burrows1, C. McLinden5, B.-M. Sinnhuber1, T. Wagner2,7
Validation data from : M. Dorf2, F. Goutail8, F. Hendrick4, F. Stroh9,
K. Pfeilsticker2, M. van Roozendael4
1Institute of Environmental Physics, University of Bremen, Germany
2 Institute of Environmental Physics, University of Heidelberg, Germany
3Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
4Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium
5Meteorological Service of Canada, Toronto, Canada
6Jet Propulsion Laboratory, Pasadena, California, USA
7Max Planck Institute for Chemistry, Mainz, Germany
8Service d’Aeronomie - CNRS, France
9Juelich Research Center, Germany

2. Comparison with DOAS-Balloon (M.Dorf)
IUP, University of Bremen:
Alexei Rozanov
Satellite Group Mainz-Heidelberg (MPI, IUP):
Sven Kühl, Janis Pukite
Harvard-Smithsonian Center for Astrophysics (SAO):
Chris Sioris
Comparison with DOAS-Balloon (M.Dorf)
Comparison with TRIPLE (F. Stroh)
Ground based (F. Hendrick)
Tropical profiles: ground based
and SAOZ (F. Goutail)

4. Ground based: same day sunrise at Harestua, Norway (60.2oN, 10.8oE)
Northern latitudes, Spring
Balloon flight: March 23rd, 2003; Kiruna (67.9oN, 21.1oE); 15: :09
Ground based: same day sunrise at Harestua, Norway (60.2oN, 10.8oE)
Backward match:
March 23rd, 2003; 11:07 UT;
Orbit 5545; State 7; 75oN,16oE
Forward match:
March 24th, 2003; 9:01 UT;
Orbit 5558; State 10; 56oN, 26oE

5. October 9th, 2003; Air sur l’Adour (43.7oN, 0.3oW)
Midlatitudes, Autumn
Backward match:
October 9th, 2003; 9:51 UT;
Orbit 8407; State 9; 41oN,8oE
Forward match:
October 10th, 2003; 9:20 UT;
Orbit 8421; State 9; 41oN, 16oE

6. Tropics, Summer

7. Statistics for all Balloon-DOAS comparisons (IUP Bremen)
3 DOAS flights, 6 matches
Very good agreement with balloon-born DOAS in the entire altitude range, relative deviations between -10% at lower altitudes and 20% at higher altitudes

8. Ground based: average of 7 profiles measured on August 29th, September 2nd, 9th, 27th, 28th, November 21st, and December 11th, 2004 over Reunion Island (21oS, 55oE)
SAOZ: average of 3 flights on November 29th, 1997, January 31st, 2004, and February 5th, 2004 over Bauru (22.4oS, 49.0oW)
SCIAMACHY IUP: zonally averaged profiles between 19oS and 23oS measured on September 2nd, 9th, 27th, 28th, November 21st, and December 11th, 2004
SCIAMACHY SAO: zonally averaged profiles between 19oS and 23oS measured on December 11th, 2004

9. Comparison to Balloon in situ

11. Summary
SCIAMACHY retrievals of different groups are mostly in agreement within error bars.
Below 20 km SAO retrieval tend to produce higher values with quite large uncertainties as compared to Bremen and Mainz-Heidelberg results
Very good agreement with balloon-born DOAS in the entire altitude range, relative deviations between -10% at lower altitudes and 20% at higher altitudes
Variable degree of agreement with TRIPLE
Very good agreement for the forward match on June 9th, 2003
Disagreement for the flight on March 6th, 2003, further investigations necessary