Arctic Tundra Shifts from Carbon Sink to Source Amid Rising Emissions

The Arctic tundra, traditionally a carbon sink, is now emitting more carbon dioxide than it absorbs due to increased wildfires and warming temperatures, according to NOAA's 2024 Arctic Report Card. The region is warming up to four times faster than the global average, leading to permafrost thaw and the release of trapped carbon. This shift exacerbates climate change impacts, with wildfires further accelerating permafrost thaw and carbon emissions. Scientists emphasize the need for comprehensive understanding to address this environmental crisis.