A reader has sent in these maps observing some features live on from year to year. “Compared to 2014, west of Strasbourg is more or less the same in 2013, and there is another one near Manosque, northeast of Marseilles, repeatedly. The Paris heat island is in all of them, and the last 3 years Chalons en Champagne is always too cold and inland from Brest too warm.” I agree the French data looks poorly calibrated – will try and get a new 2010 map with the same normals period as the others.
2008 – 2009 – 2010 – 2011 – 2012 – 2013 – 2014 –