Fig. 1: Map of the Chinese Coast.
From: Increasing tropical cyclone residence time along the Chinese coastline driven by track rotation

The blue solid line on the map represents the studied Chinese coastline, extending from Fangchenggang City in the south to Dandong City in the north. This coastline is derived from GSHHG coastal data at a coarse resolution. The green shaded area outlines the coastal buffer zone along the blue solid line, with a width of 200 km. The dashed red line divides the buffer zone into southern ( ≤ 26°N) and northern ( > 26°N) regions for separate analysis. The black lines depict the tracks of two tropical cyclones (TCs), In-fa (2021) and Saola (2023), which are notable for their prolonged durations within the coastal regions.