[Ed. – This isn’t definitive in itself, but as “tonyheller” says, it’s especially interesting because the observations are tropospheric, and not influenced by surface heat effects. They’re also of particular interest because they represent a very extended period of observations from a consistent source: one whose conditions for observations don’t keep changing over time. There are graphs at the link.]
In their “hottest year ever” press briefing, NOAA included this graph, which stated that they have a 58 year long radiosonde temperature record. But they only showed the last 37 years in the graph.
Here is why they are hiding the rest of the data. The earlier data showed as much pre-1979 cooling as the post-1979 warming.
I combined the two graphs at the same scale below, and put a horizontal red reference line in, which shows that the earth’s atmosphere has not warmed at all since the late 1950’s. …
[I]t gets worse.