I need some help in understanding the concept of global warming.
It seems to me that in order to prove any type of change in any area of inquiry, one must first establish a base measurement. To prove that earth's average temperature has warmed over this past century, one must prove the base average temperature one hundred years ago.
So not only do we need an accurate temperature reading from the year 1907, but in order to reach a global average, we need about 10,000 such readings from around the world, from areas populated and remote.
I wonder who in the world, in 1907 or even 1947, possessed the inclination or the instruments needed to establish even one, precise temperature reading at any one point on earth?
An "average" earth temperature would then require accurate readings from about 10,000 points on the globe, all on the same day, at the same hour of the day. This, of course, must include all unpopulated areas such as parts of Africa, Siberia, Gobi Desert, and thousands of ocean surface locations.
Finally, I presume that any year's average temperature, at any particular location, requires these same accurate readings taken at least four times a year, once during each of the four seasons.
As soon as I resolve these minor objections, I just might convert to the church of global warming and climate change.