Alienwise writes "Judith Curry reports a scientific concept of a atmosphere CO2 sequestration plant. It would be base on Antartic in order to profit from the cold weather, which would be facilitate to create CO2 snow, which would then be burried. The plant could be powered by windmills. There is much more in the original paper, whose abstract can be viewed at http://journals.ametsoc.org/doi/abs/10.1175/JAMC-D-12-0110.1"
Link to Original Source