Global warming may be much more catastrophic (and happen much quicker) than we imagined

2016-03-22T13:50:00-04:00

An influential group of scientists led by James Hansen, the former NASA scientist often credited with having drawn the first major attention to climate change in 1988 congressional testimony, has published a dire climate study that suggests the impact of global warming will be quicker and more catastrophic than generally envisioned.

James Hansen, an indisputably important climate scientist and activist, alongside a group of other influential experts, has released a new, 52-page paper that revises much of mainstream expectations for global warming. Hansen has called it the most important work he's done.

A synthesis of paleoclimatology, climate models, and modern observations, the document suggests that global warming will have a more violent and catastrophic impact than previously expected.

The scientists involved believe that Greenland and Antarctica could experience ice melt at much faster rates than imagined (up to several meters in a century), and that the melt could create a feedback loop further intensifying the effects of global warming.

In short, the cold, fresh water from the melted ice sheets would trap a layer of warm seawater beneath it, leading to a process known as "stratification." Such "blobs" of cold water – which could perhaps already be forming off the coast of Greenland (see image above) – would...

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Global warming may be much more catastrophic (and happen much quicker) than we imagined