SSTL entered a contract with ESA on 11th October 2021 to provide under the new Scout small scientific satellite programme a mission called HydroGNSS to measure climate change variables using GNSS Reflectometry. SSTL is working on the project with scientific partners from Sapienza, IEEC, FMI, Tor Vergata, CNR/IFAC, NOC, Nottingham and others.
More information can be found in these links:
Youtube animation
https://www.sstl.co.uk/media-hub/latest-news/2021/sstl-hydrognss-climate-mission-given-green-light-b