Before Hansen corrupted his own data ten years ago, the world’s best collection of weather stations (the US) showed that the 1930s was the warmest decade.
We know that earth warmed from 1880 to 1930, and then cooled until the 1970s. We know that earth warmed from the late 1970s until the year 2001. Is it warmer now than the 1930s? I doubt it.
We know that glaciers were receding from 1880-1950. We know that they were expanding during the 1970s. That information alone tells me that GISS/HadCRUT/BEST/NCDC are all complete crap, unless the freezing point of water has changed.
The people managing the data sets have proven themselves to be as crooked as a dog’s hind leg. Let’s look at what was really going on in the 1930s, going in reverse chronological order. The 1930s were hot and dry, all over the planet.1930 s news papers