Tropical Cyclone (TC)-ocean interactions are critical for TC intensity change because the ocean is the energy source for TCs. Air-sea interaction processes involve energy and momentum exchange between TCs and the ocean and are important on both TC (i.e., short-term) and climate (i.e., long-term) timescales. On shorter timescales, TC-ocean interactions are important for intensity forecasting. The intense winds of TCs significantly impact sea surface temperature (SST) through entrainment mixing and upwelling. The sea state, including waves and spray, also depends on wind speed and affects air-sea enthalpy and momentum exchange. There are many open questions regarding the impact of TCs on ocean biogeochemistry and biological productivity. On longer climate timescales, how the future ocean will evolve has strong implications for TC activity projections, with important societal implications. Meanwhile, natural inter-annual (e.g., ENSO) and inter-decadal (e.g., the Pacific Decadal Oscillation and Atlantic Multidecadal Oscillation) variability and global warming also affect the ocean, TCs, and their interactions. This session welcomes submissions under the broad subject of TC-ocean physical and biogeochemical interactions from weather to climate timescales. It intends to provide a friendly platform for interactions among oceanographers, atmospheric scientists, and climatologists in this multi-disciplinary field.