China coastal cities face sea-level rise 20% above global average

Scientists project that melting Antarctic ice will cause sea levels along China's densely populated coasts, including Hong Kong and Shanghai, to rise 15-20% higher than the global average due to gravitational water redistribution. This holds even under the 1.5°C Paris target, posing acute risk to major economic hubs. The finding underscores regional climate vulnerability and potential long-term infrastructure and migration pressures.