structural:reformatting
Climate change

Like the rest of the world, East Asia has been getting warmer due to climate change, and there had been a measurable increase in the frequency and severity of heatwaves. The region is also expected to see the intensification of its monsoon, leading to more flooding. China has notably embarked on the sponge cities program, where cities are designed to increase the area of urban green spaces and permeable pavings in order to help deal with flash floods caused by greater precipitation extremes. Under high-warming scenarios, "critical health thresholds" for heat stress during the 21st century will be at times breached, in areas like the North China Plain.

China, Japan and the Republic of Korea are expected to see some of the largest economic losses caused by sea level rise. The city of Guangzhou is projected to experience the single largest annual economic losses from sea level rise in the world, potentially reaching US$254 million by 2050. Under the highest climate change scenario and in the absence of adaptation, cumulative economic losses caused by sea level rise in Guangzhou would exceed US$1 trillion by 2100. Shanghai is also expected to experience annual losses of around 1% of the local GDP in the absence of adaptation. The Yangtze River basin is a sensitive and biodiverse ecosystem, yet around 20% of its species may be lost throughout the century under 2 °C (3.6 °F) and ~43% under 4.5 °C (8.1 °F).