‘Terrifying’ New Research Shows Amazon Flipped From Carbon Sink to Carbon Source

‘terrifying’-new-research-shows-amazon-flipped-from-carbon-sink-to-carbon-source

19-07-21 07:03:00,

Recent research has elevated concerns about the Amazon putting more CO2 and other greenhouse gases into the atmosphere than it absorbs, but the new findings, published in the journal Nature, were presented as a “first” by scientists and climate reporters.

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Following years of warnings and mounting fears among scientists, “terrifyingresearch revealed last week that climate change and deforestation have turned parts of the Amazon basin, a crucial “sink,” into a source of planet-heating carbon dioxide.

Though recent research has elevated concerns about the Amazon putting more CO2 and other greenhouse gases into the atmosphere than it absorbs, the new findings, published in the journal Nature, were presented as a “first” by scientists and climate reporters.

From 2010 to 2018, researchers for the new study — led by Luciana Gatti of Brazil’s National Institute for Space Research — conducted “vertical profiling measurements” of carbon dioxide and monoxide a few miles above the tree canopy at four sites in Amazonia.

The researchers found that “Southeastern Amazonia, in particular, acts as a net carbon source” and “total carbon emissions are greater in eastern Amazonia than in the western part.” The former, they noted, has been “subjected to more deforestation, warming, and moisture stress” than the latter in recent decades.

This is the biggest story in the world right now. https://t.co/vItrileKIF

— Ellie Mae O’Hagan (@elliemaeohagan) July 14, 2021

As The New York Times reported last week:

“In an accompanying article in Nature, Scott Denning, a professor in the department of atmospheric science at Colorado State University, wrote that the paper’s “atmospheric profiles show that the uncertain future is happening now.”

“In an emailed response to questions, Dr. Denning praised the new study as the first real large-scale measurement — from various altitudes across thousands of kilometers and remote sectors — of the phenomenon, an advance beyond the traditional measurement at forest sites.

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