On my blog I write a lot about real problems with climate station data. (realclimate.org)
Each station is local but stations in many regions of the U.S. and Alaska are displayed... thus regional not local if one looks at many climate stations in many states, and regions. (realclimate.org)
Polar and mid-high latitude amplification is an important signature of global warming which explains why warming is not as evident at climate stations in southern regions of the U.S. as it is in the north. (realclimate.org)