Showing posts with label antarctic ice sheet. Show all posts
Showing posts with label antarctic ice sheet. Show all posts

Sunday, June 17, 2018

Monday, July 3, 2017

Truly, Profoundly Disturbing

I have just finished reading a long article in National Geographic, one that, without any use of hyperbole, should disturb all of us deeply and profoundly. But thanks to our capacity to ignore anything that disturbs our worldview, the article's dire warning will likely provoke little concern and no alteration of our bloated, cossetted and unsustainable lifestyles.

The following video summarizes the situation well, but following it I am including some excerpts from the article, although I do recommend taking some time to read the entire piece carefully.



The problem, of course, is earth's warming temperatures, but those rising numbers are much greater in Antarctica, where the ice shelves that hold in the glaciers are melting at unprecedented rates:
Why should we care about Antarctica ice melt? Antarctica's ice shelves are disintegrating and the glaciers behind them are flowing faster into the ocean. This could spell disaster for coastal areas around the world, and scientists are in a race against time to understand how it's happening. Sea levels around the world could rise by 14 feet if all of the ice melted just on West Antarctica.
Large swaths of West Antarctica are hemorrhaging ice these days. The warming has been the most dramatic on the Antarctic Peninsula, a spine of ice-cloaked mountains that reaches 700 miles up toward the tip of South America. Catching the powerful winds and ocean currents that swirl endlessly around Antarctica, the peninsula gets slammed with warm air and water from farther north. Average annual temperatures on its west side have risen nearly 5 degrees Fahrenheit since 1950—several times faster than the rest of the planet—and the winters have warmed an astonishing 9 degrees. Sea ice now forms only four months a year instead of seven.
The ice shelves, Fricker says, “are the canary in the coal mine.” Because they’re already floating, they don’t raise sea level themselves when they melt—but they signal that a rise is imminent, as the glaciers behind them accelerate. Fricker and her team have found that from 1994 to 2012, the amount of ice disappearing from all Antarctic ice shelves, not just the ones in the Amundsen Sea, increased 12-fold, from six cubic miles to 74 cubic miles per year. “I think it’s time for us scientists to stop being so cautious” about communicating the risks, she says.
The video, along with the above three excerpts, are merely the tip of the iceberg, so to speak. Yet the signs are clear, ominous, and accelerating. I have little doubt that the predicted flooding cataclysms will occur much faster than mid-to-late century. Indeed, before my time is up, I fully expect the apocalypse to be well underway.

Friday, May 23, 2014

Prognosis: Grim



Kevin Farmer, the lead letter-writer in today's Star, captures nicely, I think, the irrational nature of humanity that does not bode well for our collective future:

Re: Antarctic melt greatest in 1,000 years, May 16

As humanity continues to avoid meaningful action on climate change, an unavoidable future of climate catastrophe continues to take shape. In that regard, it has been morbidly fascinating to watch people simultaneously over- and under-react to reports that the West Antarctic ice sheet is destined to collapse, committing spaceship Earth and all of its passengers to a rise in sea levels of up to four meters from this impact alone.

Some people are receiving this news as proof of the urgency of climate change. Others are dismissing it as an unstoppable phenomenon the impacts of which will be felt only over a long period of time. They are resigned to climate change that is out of our hands and a problem for future generations. Ironically, it is the former who are under-reacting and the latter who are over-reacting.

The collapse of this ice sheet was set in motion years ago, perhaps decades. This event is not an indication of how urgent climate change is today, but rather how urgent climate change was before the collapse was triggered. To “take the temperature” of the climate crisis today according to this particular news is to under-react to the implications of this event.

We are setting future climate catastrophes in motion today. The urgency of climate change today is properly measured against those outcomes. To consign future generations to the consequences of inaction in the present, because we are already consigned to the consequences of inaction in the past, is to over-react to the implications of this event.

As long as we wait for catastrophes to inform our environmental awareness, these catastrophes will likely be permanent features of a new normal. By all credible accounts, the future impacts of climate change will continuously accelerate and worsen.

The collapse of the West Antarctic ice sheet is part of the new normal. What else are we waiting for? Whatever it is, do we really want it?


Kevin Farmer, Toronto