A few days ago, I made a global temperature anomaly graph dating back to 1880. I even explained the reasons for why I doubted all 1880 – Present global temperature graphs, including my own.
However, yesterday, I found a global temperature anomaly graph from the National Academy of Sciences from 1975, which is pictured below.
The old graph I made included data from NOAA (1880 – 1978) and data from the UAH (1979-Present). However, after finding the 1975 graph, I decided I needed to revise my old graph. So, I decided to use data from NOAA for the years 1880 and 1969-1978, the National Academy of Sciences data for the years 1890-1968, and UAH for 1979-Present.
Now, just because I revised the graph doesn’t mean it is 100% accurate, nor does it mean the old one was accurate either. Either of them could be right or wrong, in which I explain that here.
However, the data shows that the new graph (directly above) is probably the most accurate global temperature graph in existance for the period 1880-Present. If this is true, then only three of the past 15 years (not 10 as NASA says) would feature the “hottest years evah!”
1938 was likely by far the warmest year in the instrumental record. 2016 was not even close to 1938, but it did make 2nd place and 1937 and 1998 tied for 3rd. 1939 was 4th and 1940 was 5th. Just like the U.S., it does turn out that the 1930s were likely the warmest decade on record. The 2000s were simply not.
The video from which I got the NAS data came from here. Will be put into MLA format later today. https://youtu.be/gKgazkoHlTE