Large CO2 and CH4 Emissions from Polygonal Tundra During Spring Thaw in Northern Alaska Findings mean the Arctic may be even less of a carbon sink than previously thought. Measurements of a large pulse of carbon gases emitted from the tundra ecosystem were made near Barrow, Alaska, in May 2014. The pulse was large enough … Continue reading Large CO2 and CH4 Emissions from Polygonal Tundra During Spring Thaw in Northern Alaska