来自MSN1 个月
The Arctic tundra was a carbon sink. Now it contributes to global emissions
The Arctic tundra is now emitting more carbon dioxide than it absorbs, according to the latest Arctic Report Card released by the US National Oceanic and Atmospheric Administration (NOAA).
The Globe and Mail22 天
Parts of Canada’s Arctic tundra releasing more carbon than they absorb, study says
A new study suggests regions of the Arctic ... tundra are now releasing more planet-warming gases than they absorb, upending a millennia-old trend. The study published in academic journal Nature ...