Climate is average weather ... to learn why the climate is the way it is today means learning about weather and why the weather is the way it is ... and a lot of why the weather is the way it is has to do with how far we are from the oceans ...
Those who think man is altering the climate generally don't know anything about weather ... even climatologist themselves divorce themselves from advanced meteorology ... the math is too difficult ...
Sidetracking your sidetrack ... but if I've had to tell you this again, then you're still smoking to much pot ...
No, climate is not the average of weather.
Climate is the sum of the energy mechanisms effecting the surface of any particular part of the planet.
For example, since the planet core is liquid, a rotational axis shift is possible, causing massive climate change to localized areas of the surface.
Another thing that can effect climate is ellipse, nutation, and precession of the earth's orbit around the sun.
The intensity of the suns thermonuclear furnace also has cycles.
Etc.
Clearly the atmosphere retains heat.
If not for heat retention, the planet would be over 40 degrees colder, and there would be a much more drastic drop in temperature at night.
The degree of heat retention is dependent upon the gases in the atmosphere.
And we know CO2, methane, water vapor, etc. are all powerful greenhouse gases.
We know greenhouse are warmer because the frequency of the light energy is shifter by the glass, and that prevents as much energy leaving as enters.
And finally, we know the normal climate cycle of warming and ice age cooling is over 110,000 years long, as there have been over a dozen of these cycles recorded on ice cores, etc. So we know where the earth should be in its current natural cycle. It should slightly be in the early cooling phase.
But instead by doubling the amount of CO2 in the atmosphere, by adding over 5 billion tons of carbon to the atmosphere for the last 100 years, we are initiating the start of an additional warming cycle, on top of the previous natural warming cycle.
That will produce a double warming that has not happened in hundreds of millions of years.