Showing posts with label climate feedback loops. Show all posts
Showing posts with label climate feedback loops. Show all posts

Wednesday, October 23, 2019

As The Dust Settles....



I will offer no analysis of our federal election; I will only say that from my perspective (my disappointment that the Greens did not do better notwithstanding), the fact of a minority government is the best of all outcomes. The question of whether or not Justin can find within himself the capacity to play nice with others is yet to be determined, but for the sake of the country, we can only hope he does.

While many pressing issues stand to be addressed, pharmacare being uppermost in Jagmeet Singh's mind, I do hope that effective action to address climate change will also be on the agenda. This latest report reminds us that we have little time to lose:
Research has found Arctic soil has warmed to the point where it releases more carbon in winter than northern plants can absorb during the summer.

The finding means the extensive belt of tundra around the globe — a vast reserve of carbon that dwarfs what's held in the atmosphere — is becoming a source of greenhouse gas emissions responsible for climate change.

The research by scientists in 12 countries and from dozens of institutions is the latest warning that northern natural systems that once reliably kept carbon out of the atmosphere are starting to release it.
While this is only one of several feedback loops exacerbating climate change, it is a potent one.
The scientists placed carbon dioxide monitors along the ground at more than 100 sites around the circumpolar Arctic to see what was actually happening and took more than 1,000 measurements.

They found much more carbon was being released than previously thought. The results found carbon dioxide emissions of 1.7 billion tonnes a year are about twice as high as previous estimates.

Arctic plants are thought to take in just over one billion tonnes of the gas from the atmosphere every year during growing season. The net result is that Arctic soil around the globe is probably already releasing more than 600 million tonnes of CO2 annually.
And the process is accelerating.
Under a business-as-usual scenario, emissions from northern soil would be likely to release 41 per cent more carbon by the end of the century.

But the Arctic is already warming at three times the pace of the rest of the globe. Even if significant mitigation efforts are made, those emissions will increase by 17 per cent, said the report.
Our house is on fire. Only resolute, principled politics holds any hope of containing the conflagration.

Sunday, March 3, 2019

You Probably Don't Want To Hear This

.... but new research suggests that yet another climate-change feedback loop could be in the offing as we plunge headlong toward disaster:
The stratocumulus clouds, the layer of cloud shielding us from the direct rays of the sun could vanish one day. That’s according to a new research by a team of scientists. As Eric Sorensen reports, if this happens, it could lead to rapid global warming.



Watching the story, one is reminded of how, for millennia, the earth provided the kind of balance that allowed life to flourish. Clearly, all the signs suggest that nurturing environment is rapidly changing, and we have no one to blame but ourselves.

Thursday, August 23, 2018

It's All Connected

Humans are a lamentably short-sighted species. Sure, we understand some of the basic underlying principles that govern our existence, but that knowledge seems to have little overall impact on the way we conduct ourselves.

Take, for example, cause and effect. We understand that if we hit our hand with a hammer, pain and possible fractures will ensue. Similarly, we know that if we toss a match into flammable material, a fire will follow. Ergo, unless there is something really wrong with us or our intent is to build a bonfire, we tend to avoid such behaviours. Beyond understanding such immediate consequences, however, our thinking tends to get a tad fuzzy.

Take, for example, the ever-increasing occurrences of forest fires. We know beyond a doubt that climate change is greatly exacerbating their threat, the fire season starting earlier and, in some cases becoming a year-round phenomenon. Yet when we think of the consequences of forest fires, we tend to think only of their relatively short-term effects: property destruction, carbon release and future mudslides, the absorption capacity of the land having severely been compromised.

As the following report shows, however, there are much more insidious cnsequences, ones that remind us that when we talk of ecological systems, everything is interconnected.