For anyone who knows anything about climate change, the news is not good. There is a large and growing crack in the fourth-largest Antarctic ice shelf, known as the Larsen C.
Larsen C, according to the British Antarctic Survey, is “slightly smaller than Scotland.” It’s called an ice “shelf” because the entirety of this country-sized area is covered by 350-meter-thick ice that is floating on top of deep ocean waters.What they found is deeply disturbing:
The crack in Larsen C grew around 30 kilometers (18.6 miles) in length between 2011 and 2015. And as it grew, also became wider — by 2015, yawning some 200 meters in length. Since then, growth has only continued — and now, a team of researchers monitoring Larsen C say that with the intense winter polar night over Antarctica coming to an end, they’ve been able to catch of glimpse of what happened to the crack during the time when it could not be observed by satellite.
The rift had grown another 22 kilometers (13.67 miles) since it was last observed in March 2016, and has widened to about 350 meters, ... The full length of the rift is now 130 km, or over 80 miles.This means that at some time, likely in the next few years, another major chunk of ice will be lost, and ultimately that will be bad news for rising sea levels:
Researchers have estimated that the loss of all the ice that the Larsen C ice shelf currently holds back would raise global sea levels by 10 centimeters, or just under 4 inches.At least equal in consequence is the loss of reflective surface area, meaning that more and more heat will be absorbed by the ocean, adding to an already warming planet, the release of methane, etc. An ugly feedback loop.
Closer to home, there are these worrisome images of a world in the grips of dangerous, if not yet runaway, climate change:
Why do I continue to post such material? In many ways, considering who reads my blog, I am preaching to the converted. But on the other hand, perhaps someone will send a link to a skeptic, at least causing him or her a moment or two of introspection. If that is too far-fetched an aspiration, it at least provides, I hope, a little bit more information for those keen to understand how our world is being destroyed while our 'leaders' mouth platitudes and we blithely continue our indulgent, self-destructive and heedless ways.