At sunset, buoy technicians on the 2022 research cruise put on the final touches—the underwater sensors. After deploying the buoy, they attach 11 sensors to the wire that will hang 500 meters underwater from the hull to collect data on salinity, currents and subsurface temperatures. The mast has 4-7 weather sensors. Weather buoys ensure more accurate and timely forecasts of extreme weather events. NOAA photo.