In the 70's - Get ready for a Mini-Ice Age
In the 90's - Al Gore said buy a boat, the global heat was going to flood us all.
We wasted trillions of dollars stuffing politicians pockets with that scare.
Now we are starting over.
Upside-down "rivers" of warm ocean water may be one of the causes of Antarctica's ice shelves breaking up, leading to a rise in sea levels. But a new study suggests an increase in sea ice may lead to a much more devastating change in the Earth's climate — another ice age.
Using computer simulations, the research suggests that an increase in sea ice could significantly alter the circulation of the ocean, ultimately leading to a reverse greenhouse effect as carbon dioxide levels in the ocean increase and levels in the air decrease.
The last major ice age ended at the end of the Pleistocene era, about 2.5 million years ago, as glaciers have periodically grown and then gotten smaller. Researchers believe that changes to the Earth's orbit may be partly responsible for some of the Earth's cooling, but additional factors have likely played a part, Jensen added.
“The most plausible explanation is that there was some change in how carbon was divided between the atmosphere and the ocean,” Jansen continued. “There’s no shortage of ideas about how this happens, but it’s not quite clear how they all fit together.”
Researchers also believe a mini-ice age may have occurred roughly 12,800 years ago. It likely stems from an asteroid impact that "rocked the Northern Hemisphere" and led to the Younger Dryas climate event.
Jansen pointed out that the Southern Ocean around Antarctica "plays a key role in ocean circulation" due to the deep waters in the region, leading it to have "outsize[d] consequences."
“What this suggests is that it’s a feedback loop,” said the study's lead author, Alice Marzocchi. “As the temperature drops, less carbon is released into the atmosphere, which triggers more cooling.”
“What surprised me is how much of this increased storage can be attributed to physical changes alone, with Antarctic sea-ice cover being the key player,” Marzocchi added, noting that future study of the ocean and the role it plays in the carbon cycle can help simulate "future environmental change.”
The research has been published in the scientific journal Nature Geoscience.
The key line is, "future study of the ocean and the role it plays in the carbon cycle can help simulate "future environmental change".
Which means we need more money for research.
