Trees and Land Absorbed Almost No CO2 Last Year - Slashdot

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Posted by BeauHD from the accelerated-heating dept.

The Earth’s natural carbon sinks — oceans, forests, and soils — are increasingly struggling to absorb human carbon emissions as global temperatures rise, raising concerns that achieving net-zero targets may become impossible. “In 2023, the hottest year ever recorded, preliminary findings by an international team of researchers show the amount of carbon absorbed by land has temporarily collapsed,” reports The Guardian. “The final result was that forest, plants and soil — as a net category — absorbed almost no carbon.” The Guardian reports: The 2023 breakdown of the land carbon sink could be temporary: without the pressures of drought or wildfires, land would return to absorbing carbon again. But it demonstrates the fragility of these ecosystems, with massive implications for the climate crisis. Reaching net zero is impossible without nature. In the absence of technology that can remove atmospheric carbon on a large scale, the Earth’s vast forests, grasslands, peat bogs and oceans are the only option for absorbing human carbon pollution, which reached a record 37.4bn tonnes in 2023.

At least 118 countries are relying on the land to meet national climate targets. But rising temperatures, increased extreme weather and droughts are pushing the ecosystems into uncharted territory. The kind of rapid land sink collapse seen in 2023 has not been factored into most climate models. If it continues, it raises the prospect of rapid global heating beyond what those models have predicted.

“We’re seeing cracks in the resilience of the Earth’s systems. We’re seeing massive cracks on land — terrestrial ecosystems are losing their carbon store and carbon uptake capacity, but the oceans are also showing signs of instability,” Johan Rockstrom, director of the Potsdam Institute for Climate Impact Research, told an event at New York Climate Week in September.

“Nature has so far balanced our abuse. This is coming to an end.”

A method of solution is perfect if we can forsee from the start, and even prove, that following that method we shall attain our aim. — Leibnitz

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