Three mm per year is not very impressive, nor is 1 degree Celsius over a 150 year period. Your doom predictions assume that we'll suddenly accelerate in the near future at a rate not been seen for more than 16000 years. Doesn't look likely to me.
But, what can I say, I'm not a climatologist. What I can point to is your wildly unrealistic suggestions as to what to do about it.
On the say so of heavily government dependent scientists and ideologically driven activists we are supposed to spend 20 trillion dollars fixing a problem that doesn't yet exist and may never exist. Europe presumably must spend an equivalent sum, derailing both our economies and driving us into poverty.
Meanwhile, China, India, Indonesia and Brazil keep chugging along using coal and oil as much as they please. Do you really believe these countries are going to stop using the energy they need to lift themselves out of poverty? Turn off the lights, limit manufacturing, disallow car ownership and all that jazz?
Of course they are not. This whole children's crusade is a waste of your time and our public money. If you want to help the environment you should campaign on more pressing and more solvable matters like cleaning up plastics, protecting animals and figuring out what happened to all the insects.