This is an electronic version of an article published in Global Change Biology.
Complete citation information for the final version of the paper, as published in the print edition of Global Change Biology,
is available from the Wiley Online Library, accessible via the journal’s website at: Onset of Spring Starting Earlier Across the Northern Hemisphere
Additional and enhanced graphics related to this article
Annual average temperature trends by station 1961-2000 (gif)
Spring average temperature trends by station 1961-2000 (gif)
Summer average temperature trends by station 1961-2000 (gif)
Autumn average temperature trends by station 1961-2000 (gif)
Winter average temperature trends by station 1961-2000 (gif)
Autumn first -2.2ºC freeze date trends by station 1961-2000 (gif)
Spring indices winter chill date trends by station 1961-2000 (gif)
Figure 1, Spring indices first leaf date trends by station 1961-2000 (gif)
Figure 2, Spring indices first leaf date trend for the NH, 1955-2002 (jpg)
Spring indices first bloom date trends by station 1961-2000 (gif)
Spring indices first bloom date trend for the NH, 1955-2002 (jpg)
Figure 3, Spring last -2.2ºC freeze date trends by station 1961-2000 (jpg)
Figure 4, Last -2.2ºC freeze date trend for the NH, 1955-2002 (jpg)
Spring 5ºC “permanent crossing” date trends by station 1961-2000 (gif)
Spring 5ºC “permanent crossing” date trend for the NH, 1955-2002 (jpg)
5ºC “growing season” length trends by station 1961-2000 (gif)
5ºC “growing season” length trend for the NH, 1955-2002 (jpg)
-2.2ºC freeze period length trends by station 1961-2000 (gif)
Figure 5, Spring “damage index” trends by station 1961-2000 (gif)
