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	VALIDATION Ground-based and ship-borne validation Aircraft-borne Validation Balloon-borne Validation Satellite Validation Chemistry Models  MISSION Objectives Retrieval SCIAMACHY Level 2 Operational Products Coverage Validation		SATELLITE VALIDATION   The satellite validation project, located at the University of Bremen, utilizes the data of other, well established satellite instruments to perform quick validation on a global scale for a wide range of SCIAMACHY products. Total columns as well as profiles from the SCIAMACHY limb measurements are validated. With SOLSTICE and SUSIM also the solar irradiance has been compared. The following table gives a list of the available resourses. MIPAS and GOMOS a used for intercomparisons.   Instrument  Species  GOME  O3, NO2, H2O BrO, OClO, SO2, HCHO, clouds and aerosols  OSIRIS  O3, O2, O4, NO, NO2, aerosols, T, p  TOMS,   O3, SO2  HALOE  CO2, H2O, O3, NO2, HF, HCl, CH4, NO  SAGE II + III   O3, OClO, BrO, NO2, NO3 aerosols, water vapour, T, p  SBUV II   O3  SABER  O3, H2O profiles  SOLSTICE  solar UV radiation (115 to 430nm)  SUSIM   solar ultraviolet energy  POAM III   NO2, O3, H2O, aerosols  MIPAS  O3, H2O, N2O, NOx, N2O5 ClONO2, CH4, CFCs, p, T  GOMOS   O3, NO2, NO3, H2O, T and aerosols