What is the root cause of sea level rise?

Due to the climate warming, the temperature is rising from the surface of seawater to the depth of about two kilometers, which leads to the volume expansion of seawater. The sea level rise caused by this reason accounts for about two thirds, and only about 30% of the sea level rise comes from the melting of ice and snow. However, with the increase of ice and snow melting in the future, its impact on sea level rise will be greater and greater. The harm of sea level rise in extended data

The accelerated rise of sea level has become or will become a major disaster in coastal areas. In the past 100 years, the global average sea level has risen by about 12 cm. After 100 years, the sea level will rise by about 1 m by 2 100 years. If no protective measures are taken, large areas of land and many coastal cities will be flooded first.

Nearly 70% of the world's coastal areas, especially the vast and flat delta plains, will become Zeguo, and seawater can invade 20-30 to 50-60 kilometers, or even further. Many world-famous cities, such as new york, London, Amsterdam, Venice, Sydney, Tokyo, Rio de Janeiro, Tianjin, Shanghai and Guangzhou, will be flooded. Some low-lying island countries in the South Pacific and Indian Ocean will be semi-submerged.