Fig. 1 Sea level changes along China coast during 1980-2021

Fig. 2 Sea level changes at representative stations along China coast in 2021 (relative to 2020)

Fig. 3 Sea level changes in the coastal areas of China in April (a) and in July (b) during 1980-2021

Fig. 4 The tide and storm surge variation at Zhenhai station in July 2021

Fig. 5 Integrated impacts of sea level rise and extreme sea level events from Shanghai to Zhejiang coast

Fig. 6 Monthly sea level change in the coastal areas from Fujian to Hainan in 2021

Fig. 7 The inundation area and water depth under tide level of 2.5 m

Fig. 8 Time length of saltwater intrusions in Qiantang River Estuary (Nanxing Water-Work) during 2015-2021

Fig. 9 Continuous erosion of coastal segments at Baishawan in Yingkou, Liaoning (a) and Biandangang in Yancheng, Jiangsu (b) during 2012-2021