Reports [2022] A. Cachard (2022), Study of the intra-seasonal predictability of the ITCZ migration and associated heavy associated rainfall over the northern Indian Ocean basin. Internship report [PFE IENM] (in French) carried out at DESR/LACy in the framework of the PISSARO project. [2021] R. Köth (2021), Diagnosis of the MJO in the South West Indian Ocean basin using S2S intra-seasonal forecast data with artificial intelligence techniques. Internship report [PFE IENM] (in French) carried out at DESR/LACy in the framework of the PISSARO project.