Arctic Tundra Transitions from Carbon Sink to Carbon Source Amid Rising Temperatures

The Arctic tundra, traditionally a significant carbon sink, is now emitting more carbon dioxide than it absorbs. This shift is primarily due to increasing temperatures leading to permafrost thaw and intensified wildfires, which release stored carbon into the atmosphere. These developments exacerbate global warming and pose challenges to climate mitigation efforts.

Important Points

• Permafrost Thaw: Warming temperatures cause permafrost to thaw, releasing long-stored carbon dioxide and methane into the atmosphere.
• Increased Wildfires: The frequency and intensity of wildfires in the Arctic have risen, further contributing to carbon emissions.
• Ecosystem Impacts: The transition from a carbon sink to a source affects local wildlife and human communities, disrupting traditional food sources and livelihoods.
• Global Climate Implications: Additional greenhouse gases from the Arctic contribute to global warming, creating feedback loops that may lead to more rapid and severe climate changes.

Read More Here: The tundra keeps burning and it’s transforming the Arctic