Increase in local rainfall total associated with the slowdown of tropical cyclones over the coast of China

The moving speed of tropical cyclones (TCs) is an essential factor that determines the amount of TC-induced rainfall in a specific region. Our study shows a significant decrease in TC moving speed over the coast of China during 1961-2017. The slowdown can be found in observations and GCM simulations. Statistical analysis of the long-term observations exhibits significantly larger amounts of local rainfall total when TC translation speeds are low, suggesting that TCs with lower translation speeds are more likely to induce heavy rainfall with high total amounts.