The KLIMA-IASI Retrieval Code
In this section, a general overview of the KLIMA-IASI prototype software system, as resulting from the adaptation and optimisation work undertaken during Phase 1 of the project, is presented. A brief description of the retrieval code is given, summarizing the basic features of the forward and inverse models. along with the heritage of previously developed codes which have been designed and implemented for different applications. The characteristics of the program, which are directly inherited from existing algorithms, are identified and reference is made to technical documentation and to scientific literature for background information and more detailed description of common choices adopted for forward and inverse modelling by both the KLIMA-IASI and its precursors. The main focus of the section is on the elements of innovation introduced in the KLIMA-IASI retrieval code and on new methodologies that are proposed for both data analysis and diagnostic purposes.
