A significant source of inhomogeneity in spatial averages computed from these analyses arises from spurious changes in the climatology as the mean location of the network changes over time. (waclimate.net)
If I have understand it correctly, the fact that the NOAA approach to TOBS correction (based on metadata) and the BEST approach (which ignores the metadata and just looks for inhomogeneities in the data) give similar results is extremely compelling. (skepticalscience.com)
We suggest in an upcoming paper that the temperature in 1940 - 45 is exaggerated because of data inhomogeneity in WW II. (realclimate.org)