Within the Unit for Environment and Energy Modeling (UTMEA), the Laboratory Earth Observations and Analyses within UTMEA (UTMEA-TER) carries out long-term observations of stratospheric chemistry and mesosphere in Greenland, Thule station. Stratospheric processes (evolution in atmospheric temperature, ozone depletion) and chemistry are monitored and investigated by stratospheric lidar as well as spectrometers, in strong cooperation with INGV and DMI. Since 1990 numerous measurement campaigns have been carried out, also on the international level (EASOE, SESAME, THESEO, ESMOS/Arctic. ENEA’s Diagnostics and Metrology Laboratory (UTAPRAD-DIM) has been participating in polar campaigns since the late 1990's. In particular, it has developed the laser spectrofluorimeter CASPER (patented) and prototypes of different lidar fluorosensor: for ships, underwater remotely operated vehicles and patented miniature Unmanned Aerial Vehicles. These instruments participated in 3 oceanographic cruises (2006, 2007 and 2008) at Svalbard, on board of the "Oceania" in the context of a collaboration with the Institute of Oceanology of the Polish Academy of Sciences. Their use is also envisaged under the Italian-Canadian CLIMAT (complementary use of lidar to improve bio-optical models derived from satellite system in the St. Lawrence).