The effect of changing the concentration of greenhouse gases on the Greenhouse effect in Earth-Like-Planets

We investigate the effect of changes in the concentration of greenhouse gasses on the Greenhouse Effect. We derive a general
scheme which allows us to readily evaluate the effect and estimate what a change in concentration causes. We provide
a general scheme which incorporates the Greenhouse effect (heating) and the antigreenhouse effect (cooling) into a unified picture
and hence can treat cases like Venus (greenhouse so called runaway) and Titan (so called antigreenhouse) and show how the greenhouse
effect behaves throughout a planetary system.

In particular, we discuss the effect of changes in the CO2 and H2O concentrations on the temperature.