FSSCat Mission Description and First Scientific Results of the FMPL-2 Onboard 3CAT-5/A. - Adriano Camps; Joan Francesc Muñoz-Martín; Joan Adrià Ruiz-de-Azua; Lara Fernández; Adrian Perez-Portero 001; David Llavería; Christoph Herbert; Miriam Pablos; Alessandro Golkar; Antonio Gutierrrez; Carlos Antonio; Jorge Bandeiras; et al. (IGARSS, 2021)