Chill out, man, it's coooooool!
Lowering the temperature of the eqm system will increase the solubility of CO2, by LCP causing an eqm shift to the right and the formation of more H2CO3. This occurs by the following:
CO2(g) + H2O(l) ---> H2CO3(aq)
Lowering the temperature of the eqm mixture below the melting point of water, however, will cause solid ice to freeze out of solution, leading to the evolution of CO(sub)2 gas from solution and its enclosure within teenie weenie confined spaces, then... BOOOOOOM!!! (or something a little less ostentatious)
H2CO3(aq) ---> H2O(s) + CO2(g)