I read a paper (that I can't seem to find now) that suggested putting such a sunblock up to freeze out all the CO2, then covering the CO2 with 'tarps' and putti

I read a paper (that I can't seem to find now) that suggested putting such a sunblock up to freeze out all the CO2, then covering the CO2 with 'tarps' and putting the oceans on top of the tarps to lock all the CO2 in place.