Here’s an idea I had to stop rising sea level. This plan assumes that we will fail at stopping emissions and that rising sea level will be a reality. It is estimated that sea level has already risen 15cm from 100 years ago and that currently sea level is rising around 1cm every 4 years. So the question here is what could make sea level fall 1cm every 4 years and my idea is to use nuclear power to pump water on to the Antartic continent and accumulate it there to compensate for the 25mm or so that sea level is rising every year. Now in order to calculate if this is feasible first we need to know what is the sea level surface around the world and that is 510 million km2. Then we need to calculate the area of Antartica that is above 500m, as you know for every 500m you go up temperature drops 3C and so far global warming has been .85C in the last 100 years. The area of Antartica is around 14 million Km2. This means that the ratio of oceans to Antartica is around 30 to 1. That means that for every cm we take out of the ocean we need to accumulate 30cm in Antartica. Sounds doable. So if we pumped water above 500m that is the same of 500 years of global warming at current rates and it is safe to say that way before then will have stopped burning fossil fuels so it is very unlikely that the earth will warm more than 3C. So any ice that is now ice at whatever altitude it is it will be ice at 500m higher. But it turns out that Antartica is surprisingly a very high continent. The average height of Antartica is 2500m which means that the average Antartic temperature is 9C lower than at sea level so it is extremely likely that any water pumped over Antartica will freeze there for millions of years.
So now that we know all these the next thing we have to calculate is how much water is there in 25 mm multiplied by 510 million km2 because that is the amount of water than the ice melting is currently pouring in the oceans. And the plan here is that whatever water we are losing at sea level we pump to an altitude where it will stay frozen forever somewhere in Antartica. After that we need to calculate the energy we need to pump that water 500m up. And then we need to build a number of power stations which in my view should be molten salt nuclear reactors because they are much cheaper to build and also use very commonly available fuel. This video shows what China is doing with them and explains there advantages.
So using Wolfram Alpha I came up that there is around 1250km3 of water melting from the ice cap per year in the world. This doesn’t seem to be an impossible volume of water to pump up in Antartica to a level where it will stay frozen forever. If you´d like to please help me complete this calculation, I need to find out the energy that is needed to pump this amount of water up 500m over one year.
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