Pretty close BB those extra 100 per million so the theory goes apparently get all excited. His excitement caused by the IR radiation is a transference of heat that otherwise should have passed straight out into space unless there is a cloud in the way of course. So in theory wherever these extra 100 per million hang out should be a fraction warmer subject to hundreds of other variables of course. See in theory the extra 100 per million CO2 atoms warm the atmosphere.
