In North America, tundra productivity for the 2019 growing season (the most recent data
available) rebounded strongly from the previous year, in tandem with record summer warmth
following the cold summer of 2018.
• Since 2016, greenness trends have diverged strongly by continent; peak summer greenness has
declined sharply in North America but has remained above the long-term mean in Eurasia.
• The long-term satellite record (1982-2019) indicates \»greening\» across most of the Arctic but
some regions exhibit \»browning,\» underscoring the dynamic linkages that exist between tundra
ecosystems and other elements of a changing Arctic system.
