The true cause of the increased heat all over the Earth

The UN Climate debate in Poland reached to a goal of lowering the temperature of the planet by 2 degrees
Therefore, they have been glad with such a solution of the problem as they deem it
But they don't know that the genuine reason for the generalized elevation of the temperature on the planet
is the earth has become somewhat nearer to the sun than it had been before
While the greenhouse effect may be of minor importance in relation to the real reason which is the distance between Earth and Sun has become somewhat shorter than it was before