Sea-level rise

Let’s get back to climate change for a short while: There now seems to be a model to actually explain sea-level rise from 1900 till today. The good news is that the current prediction models from 1950 onwards appear to be correct – so the projected 40-50 cm rise over the next 80 years should be correct.

Ice-mass loss—predominantly from glaciers—has caused twice as much sea-level rise since 1900 as has thermal expansion. Mass loss from glaciers and the Greenland Ice Sheet explains the high rates of global sea-level rise during the 1940s, while a sharp increase in water impoundment by artificial reservoirs is the main cause of the lower-than-average rates during the 1970s. The acceleration in sea-level rise since the 1970s is caused by the combination of thermal expansion of the ocean and increased ice-mass loss from Greenland.

 

 

 

 

 

 

 

 

 

 

 

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