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A Chinese stalagmite is said to show 9,000 years of North Atlantic cooling

A post says the record places the coldest North Atlantic temperature values within the past 200 years.

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1 Source, 1d ago, first seen 1d ago

TLDR

A post claims researchers used a Chinese stalagmite’s chemistry to trace North Atlantic temperatures through changes in the Asian monsoon. It says the record shows a 9,000-year cooling trend, with its coldest values in the past 200 years. The post attributes earlier cold events to orbital cycles, sea-ice feedbacks and internal ocean variability rather than CO2.

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9.2K

1 Source, first seen 1d ago

415 likes18 comments106 saves199 reposts

Combined views

9.2K

1 Source, first seen 1d ago

415 likes18 comments106 saves199 reposts

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1 Source

@ElectroversenetA new study shows the North Atlantic is at its coldest point in 9,000 years. Researchers used a finely layered Chinese stalagmite (a natural rain recording climate tape) to track North Atlantic temperatures. When the ocean cools and sea ice grows, the Asian monsoon weakens and the stalagmite's chemistry shifts. It's a direct proxy. The results show a nine millennia cooling trend, with the coldest values in the last 200 years. The record captures the big cold events of the past, all driven by orbital cycles, sea ice feedbacks and internal ocean variability, say the researchers, not CO2. The slight warming observed since the 1800s didn't start from normal. It started from the coldest North Atlantic baseline in 9,000 years.1d
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    1 Source

    @ElectroversenetA new study shows the North Atlantic is at its coldest point in 9,000 years. Researchers used a finely layered Chinese stalagmite (a natural rain recording climate tape) to track North Atlantic temperatures. When the ocean cools and sea ice grows, the Asian monsoon weakens and the stalagmite's chemistry shifts. It's a direct proxy. The results show a nine millennia cooling trend, with the coldest values in the last 200 years. The record captures the big cold events of the past, all driven by orbital cycles, sea ice feedbacks and internal ocean variability, say the researchers, not CO2. The slight warming observed since the 1800s didn't start from normal. It started from the coldest North Atlantic baseline in 9,000 years.1d
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