"Climate change is taking place before our eyes, and will continue to do so as a result of the concentration of greenhouse gases in the atmosphere, which have risen constantly and again reached new records," WMO's secretary general Michael Jarraud said.
Some scientists have warned that the world could be closer to a global warming tipping point than previously thought.
In more alarming signs of change from NOAA, the Guardian notes that "Blooms of algae sprouted beneath the permanent sea ice in the middle of the Arctic ocean, feeding off the sunlight filtering through melt pools. The report cites a massive bloom of phytoplankton beneath the Chukchi sea ice stretching for more than 60 miles, as well as algae blooms near melt holes in the central Arctic.
"On land, shrubs are spreading across the lower Arctic because of a longer growing season."
Some tundra plants like moss and lichen are declining.
Perhaps most staggering of all: Conditions are building for Arctic wildfires, the article states.