Spatial distribution of the changes in dates of BGS, EGS, LGS and PGS over the past three decades in the Northern Hemisphere.

Positive values (red colors) represent later onset (BGS), later finish (EGS), longer duration (LGS) and later peak of the growing season. (a), (e), (i): changes in dates of vegetation green-up for 1982–1992, 1992–2002 and 2002–2012, respectively (days yr^-1). (b), (f), (k): changes in dates of vegetation senescence for 1982–1992, 1992–2002 and 2002–2012, respectively (days yr^-1). (c), (g), (l): changes in dates of vegetation growing season length for 1982–1992, 1992–2002 and 2002–2012, respectively (days yr^-1). (d), (h), (m): changes in dates of vegetation growing peak for 1982–1992, 1992–2002 and 2002–2012, respectively (days yr^-1).