Graphical abstract from Sun et al. 2021. It has drawn much attention how tropical cyclones (TCs) are controlled by the lower boundary ocean condition, yet less studies are focused on the other way. Furthermore, sea surface temperature (SST) has been examined comprehensively in the literature on its relationship with TCs, but sea surface salinity (SSS) receives much less attention. We will fill these gaps in TC studies and better understand TC variability from a fresh perspective. Related publications: Sun, J., Vecchi, G. A., & Soden, B. J. (2021). Influence of vertical wind shear on the ocean response to tropical cyclones based on satellite observations. Geophysical Research Letters, 48, e2021GL095451. doi:10.1029/2021GL095451 Sun, J.; Vecchi, G.; Soden, B. Sea Surface Salinity Response to Tropical Cyclones Based on Satellite Observations. Remote Sens. 2021, 13, 420. doi:10.3390/rs13030420