Nine years of temporal and spatial low-mode internal wave variability in the Atlantic Basin at 26N

Although internal waves have been studied in numerous process studies, there are few observations of their long-term variability at seasonal and longer time scales. The collaborative US/UK Atlantic Meridional Overturning Circulation (AMOC) moored array (MOCHA/WBTS/Rapid_MOC projects) has been deployed across the south Atlantic basin at 26 N for over 9 years and is a unique platform which is leveraged here to examine this low-frequency variability. Hourly full-depth measurements at 8 moorings are used to examine the wind and tidally generated internal wave field. Variability at weather, seasonal and longer time scales will be discussed, as well as cross-basin propagation. Particular attention will paid to the Western Boundary, the Mid-Atlantic Ridge and the Eastern Boundary and potential internal wave sources and sinks will be identified.