[palmer]

spring is earlier and fall is later

There's been global warming, who knew? The problem is that looking closely you won't find a very good match to the GISS data. Take almost any example at random (e.g. http://www.ouranos.ca/doc/Indicateurs/Vincent.pdf) and you will see overall warming with no particular match to GISS. Different parameters (e.g. record lows vs last frost) have very different curves. A lot of them are flat since the 1970's where GISS has its big warming.

[cogitator]

Flat?

NASA SCIENTISTS DISCOVER SPRING THAW MAKES A DIFFERENCE

"Using a suite of microwave remote sensing instruments aboard satellites, scientists at NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif., and the University of Montana, Missoula, have observed a recent trend of earlier thawing across the northern high latitudes. This regional thawing trend, advancing almost one day a year since 1988, has the potential to alter the cycle of atmospheric carbon dioxide intake and release by vegetation and soils across the region, potentially resulting in changes in Earth's climate."

A lot more here: Maps