Sensitivity analysis and application of KLIMA algorithm to GOSAT and OCO validation

The present document constitutes the final report of the KLIMA-IASI project carried out by IFAC-CNR with the contribution of IUP, University of Bremen and supported by ESA-ESRIN under contract n. 21612/08/I-OL. The report describes the activities conducted by the IFAC-CNR team for the adaptation and optimization of the KLIMA algorithm to the retrieval of carbon dioxide vertical distribution and columnar values from thermal infrared spectral radiances observed by the IASI spectrometer, on-board the MetOp-A satellite, the integration of this retrieval algorithm into the ESA Grid Processing On-Demand (G-POD) operative system for bulk processing of IASI data and the results of inter-comparison of KLIMA Level 2 (L2) products with EUMETSAT L2 operational products, with TANSO-FTS/GOSAT L2 products and with selected TCCON ground stations products. We also report a brief description of the KLIMA-IASI algorithm and conclusions of the sensitivity tests performed during the Phase 1 of this project. The results of the work executed by IUP University of Bremen under WP-5100 (Analysis of SCIAMACHY CO2 retrieval) are described in details in the Technical Report IUP-TR-SCIAGHG-08-001 (Initial application of WFM-DOAS CO2 and CH4 retrieval algorithm to SCIAMACHY Level 1 (L1) version 6) and are reported in summary in Sect. 4.4 of this document.