From a Gaia / EMF
standpoint once that channel opened up the coriolis effect is going
to take cold air falling down from Antarctica and RIGHT turn it such
that some of the strongest winds in the world are in the Southern
oceans moving from WEST to EAST. This leads to induction AGAINST
cirrus given the current orientation of the earth's EMF. Further,
there can be no currents inducting for it and the currents are cold
at the surface and connected by current and by EMF. If the earth's
EMF reverses, you have a snow making BOMB by cirrus enhancement,
which would make Antarctica warmer, yes, but with plenty of snow/ice
being added. It's no win.
As far as CO2--less land to weather--so less Gaia, less carbon
eroded, and less burning--less of a carbon cycle.
CO2 is in the context of conductivity of rain and changes erosion,
changes ocean conductivity.