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Buffer increases in atmospheric CO2...i.e. it's only going to get worse...Faster.
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AI Overview

Both boreal forests and oceans are indeed showing signs of a diminishing capacity to absorb and buffer atmospheric carbon dioxide (CO2), a concerning trend for the global climate.

Boreal forests
Carbon storage: Boreal forests, or taiga, represent a vast biome with significant carbon storage, particularly within their extensive soils due to slow decomposition rates in colder climates.

Risks to carbon sink: Climate change-related factors such as increased wildfires, insect outbreaks, and logging are impacting boreal forests' ability to function as carbon sinks.
Potential tipping point: Some research suggests these forests are at risk of reaching a tipping point, potentially becoming a net source of CO2 rather than a sink, exacerbating global warming.

Oceans
Ocean absorption of warming: Oceans have historically absorbed a substantial portion of the heat from fossil fuel emissions, leading to warming and acidification.
Decreasing buffer capacity: Studies indicate that the ocean's capacity to buffer excess anthropogenic CO2 is decreasing, potentially reducing the proportion of atmospheric CO2 absorbed by oceans in the future.

Ocean acidification: The increasing absorption of CO2 by oceans leads to ocean acidification, which harms marine ecosystems and organisms reliant on carbonate for their shells and structures, like shellfish and corals.

In summary: The declining ability of both boreal forests and oceans to act as carbon sinks and buffers is a critical aspect of climate change, highlighting the urgency of reducing greenhouse gas emissions and adopting sustainable land management practices to mitigate these impacts.
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