NOAA cooled the years of Lewiston-Auburn Maine’s past by an accumulated 151°F! (55,188 heating degree day units). - See more at: NoTricksZone Not here to worship what is known but to question it Jacob Bronowski. Climate news from Germany in English by Pierre L. Gosselin
They assumed no one would archive temperature data. But I did. My research indicated they used the same algorithm across the United States at the same time. Fortunately I had archived their data from 2013 for Maine and recently compared it to their 2015 data (see above table).
As an engineering physicist and heat transfer specialist, I have worked with heating and cooling degree days for forty years. It is alarming when one discovers multi-million dollar websites have been corrupted with bogus data because the facts do not match up with agendas.
this brings up a point I have made numerous times over the last five years. when you do a research paper, do you have to make perfectly clear which years's version you are using? because the 'facts and figures' change over and over again.