Actually this is a natural cycle. We used to have ice boat races on the Hudson until about a hundred years ago when it got too warm in the winter. Ice boats were the fastest things on earth till around 1900. It was a big thing with the millionaires who built all those lovely mansions along the Hudson near where I grew up.
It's just going to go back to the cold part of the cycle called "The Little Ice Age" for a while. No big deal in human terms. More sea ice up north, more hurricaines down south. It doesn't stop so much as just slow down a little. There is still going to be cold air and cold water and hot air and hot water, just not as much as the last few hundred years or so.
Well, we think. A good volcano could kick us into a "Year Without A Summer" event, otherwise known as "Eighteen Hundred And Froze To Death". Mass famine and the death of hundreds of millions of people.
Then we'll be thankfull for all that CO2 to moderate things. The coal and oil corporation people will be heroes.
There isn't anything we can do about it anyway, so we'll see what happens.