wp_no=4006 wp_name=Validation of GOME-2 CHOCHO column list_of_product_IDs=O3M-59,O3M-60 wp_start=02/2017 wp_end=12/2021 wp_responsible=BIRA no_of_participants=1 BIRA 0.5 2 1.5 0 0 0 10000 wp_objectives: The objective of the WP is the validation of the O3M SAF CHOCHO total column products. wp_methodology: Validation (VAL) consists in a full investigation of the geophysical coherence of the data and of its quality. Validation exercises are required to assess new products or in case of major algorithmic revision. They make full use of all existing correlative data and lead to the production of a comprehensive validation report. VAL tasks: - verification of the geophysical coherence of the GOME-2/Metop-A/B/C CHOCHO total columns - comparison to independent satellite data sets as available - comparisons against ground-based MAXDOAS measurements in Xianghe, Bujumbura and Reunion Island wp_datasources: - GOME-2/Metop-A/B/C CHOCHO total column data processed by DLR - CHOCHO column from other satellites - CHOCHO column and profile data from MAXDOAS instrument operated in Xianghe (China, 40N, 116E) and Bujumbura (Burundi, 3S, 29E), archived and quality-controlled at BIRA, and possibly other BIRA stations wp_deliverables: - GOME-2 CHOCHO Validation Report End