Fast Computation of CO2 Cooling Rates for a Mars GCM

We present and discuss a new parameterization of the radiative cooling rates by CO2 at 15-micron in the Martian atmosphere. The new scheme, which is under development, is specially designed to be implemented in Mars’ global circulation models. It builds and improves upon a previous parameterization, currently in use in most GCMs. We will discuss briefly the needs for the present update and the improvements expected.