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Five Nordic countries launched the Nordic Carbon Removal Association. Their report estimates Nordics could remove 85โ160 MtCOโ by 2050, covering 60% of Europeโs need, creating โฌ9โ17B GDP and 148,000 jobs.
๐จA new study has revealed for the first time that ancient carbon, stored in landscapes for thousands of years or more, can find its way back to the atmosphere as COโ is released from the surfaces of rivers at a rate of 1.2 billion tonnes per year.
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2/ To understand the true source of river COโ, researchers compiled a global dataset of 1,195 radiocarbon measurements of dissolved inorganic carbon (DIC), COโ & CHโ from rivers & streams.
This let them determine whether the emitted carbon was modernโor much older.
3/ Using radiocarbon signatures (ยนโดC), they found that 59% of river COโ emissions come from "old" Cโmillennia-old soil carbon & even petrogenic carbon (rock-derived, >55,000 years old)
Only ~41% came from recent biological sources like plants & microbes (decadal carbon).
๐จA NEW study explores a theoretical #geoengineering approach to combat global warming โ by altering Earthโs orbit.
Simulations suggest that shifting Earth ~5.8% farther from the Sun could cool the planet by roughly 7K, effectively offsetting projected warming.
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2/ Climate models suggest global temperatures could rise by 7K by 2100, driven by greenhouse gas emissions.
This study asks: what if, instead of changing the atmosphere, we changed our position in space?
Specifically: increase Earthโs orbital radius.
3/ Basically, the paper builds on the science of Milankovitch cycles which is slow, natural variations in Earthโs orbit and tilt that have triggered past ice ages.
These cycles show that even slight orbital changes can dramatically affect climate.
CALL FOR RESEARCH PRESENTATION PROPOSALโRFF and the Harvard Solar Geoengineering Research Program invite individuals to present research at their upcoming workshop