The first long-term WATERHYPERNET prototype deployment was made at Acqua Alta Oceanogaphic Tower in the Adriatic Sea in September 2019 in collaboration with CNR. The equipment has functioned successfully, providing data every day since then. Radiometers were swapped in October 2020 by CNR and the system has successfully resumed functioning. The radiometers will now be recalibrated to assess any change during the year, before data processing is finalised.