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Branden bij Bordeaux laaien toch weer op, nog eens 55.000 mensen geëvacueerd

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Drying Lakebeds Are Releasing Massive Amounts of Carbon, Study Finds

"In many parts of the world, lakes are drying out at a scale so massive that scientists are warning they may be emitting enough greenhouse gases to rival our fossil fuel habit," reports ScienceAlert:

In a new study published in Science, scientists say the Aral Sea — the world's largest desiccated lake — has emitted a whopping 204 megatons (~225 million US tons) of carbon dioxide since it was drained in the 1960s... The study estimates that between 1960 and 2022, the evaporating sea has released 204 megatons of carbon dioxide into the atmosphere, based on site surveys and core samples collected from across the dry lakebed...

The new study suggests that rehydrating the entire basin could come with enormous benefits to the environment, not just within the sea itself, but at a global level. "There is a hidden carbon treasure beneath the Aral Sea," says biochemist Rafael Marcé from the Spanish National Research Council. "If these sediments remain exposed, carbon will continue to be released into the atmosphere. If the sea is re-flooded, that same carbon could shift from being a source of emissions to becoming part of the climate solution." According to the researchers' calculations, re-flooding the lakebed could prevent the release of the estimated 165 megatons of carbon that remain.
The study also revealed that nearly one-fifth of the Aral Sea's carbon emissions are actually being released as wind blows away sediment on the lakebed, a factor that researchers had not accounted for in the past.




Thanks to Slashdot reader schwit1 for sharing the article.

Read more of this story at Slashdot.

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Minder lezen, Meer weten.

Nog eens 55.000 evacuaties door brand nabij Bordeaux

BORDEAUX (ANP/AFP) - De prefectuur van Gironde heeft opdracht gegeven voor de evacuatie van nog eens 55.000 mensen in de buitenwijken van Bordeaux vanwege bosbranden.

Volgens brandweermensen ter plaatse is de brand opnieuw opgelaaid. Er bestond eerder hoop dat de brand zich niet verder zou uitbreiden, omdat de temperaturen waren gedaald en de lucht vochtiger was geworden.

In het gebied waren al 167.000 mensen geëvacueerd.


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