Historical datasets show large regional variations in climate changes over the past millenium. (giss.nasa.gov)
And within the next few days, NOAA will release a new historical dataset ending at June 2015, which will likely include some 80 % of the monthly records back to 1880 being «adjusted» once again. (c3headlines.com)
The HadCRUT series has not had a major (entire historical dataset) revision this year from what we know. (c3headlines.com)