ive always had this thought on temps going up a little...

its not CO2 for one, and while it is the cycle of our earth, there is 1 thing that can possibly be causing a discrepancy...

its well known that the recorded "hottest temperature" on earth is in Death Valley, well that is air temp that they use...

the actual hottest surface tempurature on earth is in Iran, in the Lut desert, and it has reached over 175 degrees...

so...

here we are in the world, evolving, taking out forests, and laying down concrete and houses and huge buildings, cities, towns, ect...

anyone every think about the after effects of that?

concrete roads and highways, will get blasted with sun, and retain the heat, houses will as well on comp roofing and even concrete shingle roofing..

then what do you have?

radiant heaters for the most part, getting up to extremely high numbers, after baking in the sun all day, and radiating that heat throughout until cooled off... which will then increase the air temperature surrounding it... the Lut desert is in between 2 mountain ranges, so its higher elevation will allow it to cool quicker than Death Valley, which is a tan concrete like substance that gets baked with sun all day then releases heat increasing the temperature in the air, but since its not higher in elevation, night temps dont get low enough to drop the air temp as drastically as Lut...

just one of my thoughts on the subject...