Tropical cyclone is one of the most destructive natural disasters around the world, causing significant economic losses and casualties to the coasts and inland proximity when they make landfall. Some studies suggested that the decay of tropical cyclone intensity after landfall is slowing down. However, here we show that its long-term trend is uncertain and not universal, but spatial, temporal, data, and methodology dependent such that any claim of a climate trend could be misleading at present. The decay highly depends on the landfalling track modes, with the effective area of moisture supply from the ocean playing a vital role.

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Paper 1: Chan, K.T.F., Zhang, K., Wu, Y. et al. Landfalling hurricane track modes and decay. Nature 606, E7–E11 (2022). https://doi.org/10.1038/s41586-022-04791-1

Paper 2: Chan, K.T.F., Chan, J.C.L., Zhang, K. et al. Uncertainties in tropical cyclone landfall decay. npj Clim Atmos Sci 5, 93 (2022). https://doi.org/10.1038/s41612-022-00320-z