squealing usage(s) from Bee dictionary

  1. In climate terms, squealing may involve increased variability of the weather sudden shifts from hot temperatures to colder ones and back again.

In nonlinear far from equilibrium systems, when a threshold for abrupt change is approached, the variables may begin to fluctuate rapidly. Such rapid uncommon fluctuation is called squealing. It's like the wheel wobbling before it shoots off its axis.

 

Oh look, our weather is squealing!

 

Erratic, Extreme Day-To-Day Weather Puts Climate Change in New Light

 

The first climate study to focus on variations in daily weather conditions has found that day-to-day weather has grown increasingly erratic and extreme, with significant fluctuations in sunshine and rainfall affecting more than a third of the planet.

...swings from thunderstorms to dry days rose considerably since the late 1990s.

 

One way to visualize this is by imagining time as a vertical line, moving from left to right in this chart. Think of the white space as clear days and a black line as a rainy day. Under usual conditions there are occasional rainy days separated by clear expanses. Then rainy days begin to happen more frequently, slowly at first. But the instability isn't linear, it rises exponentially after a threshold is crossed. (The chart has nothing to do with weather. It illustrates nonlinear change.)

I find that deeply disturbing

Tags: Climate Destabilization, nonlinear, squealing

Views: 235

Replies to This Discussion

That's a new term for me.

I am very interested in this topic and ecology issues.

Thanks for the post -- I'll follow the link to the article and comment some more.

I just love the LOLcat you made!

 

I will watch this video -- thanks!

That was a great video showing the Texas wildfires, Texas climate and ecological issues.

I really appreciate you posting this.

I will go to that website and look around some more.

Thanks!

On a larger scale, wild shifts in day-to-day conditions would diminish the ability of trees and plants to remove carbon from the atmosphere, Medvigy said. In 2010, he and Harvard University researchers reported in the journal the Proceedings of the National Academy of Sciences that erratic rain and sunlight impair photosynthesis. That study concluded that this effect upsets the structure of ecosystems, as certain plants and trees -- particularly broad-leafed trees more than conifers -- adapt better than others.

In the context of the current study, Medvigy said, the impact of variability on photosynthesis could mean that more carbon will remain in the atmosphere than climate models currently anticipate, considering that the models factor in normal plant-based carbon absorption. Moreover, if the meteorological tumult he and Beaulieu observed is caused by greenhouse gases, these fluctuations could become self-perpetuating by increasingly trapping the gases that agitated weather patterns in the first place.

"We have not yet looked for direct ties between weather variability and increased carbon dioxide concentration in the atmosphere, but I would not be surprised if they are connected in some way," Medvigy said.

I read that study - thanks for posting the link. I try to read up on climate change as much as possible. I like to keep current with the new studies.

We actually got some rain here in TX! Yea!

 New evidence has surfaced that may explain one mechanism for Global Warming increasing severe weather.

Global Winds Could Explain Record Rains, Tornadoes

Jet streams that are usually separate can sit on top of one another, creating a super jetstream.

A superjet and its circulating winds carry roughly twice as much energy as a typical jet stream...

"There is reason to believe that in a warmer climate, this kind of overlapping of the jet streams that can lead to high-impact weather may be more frequent," Martin says.

That idea can be tested,...

There was more extreme weather in 2011 than in the entire 1980 decade.

Extreme Weather Disasters 2011: Billion-Dollar Catastrophes Smash U...

This article is a bit behind in the science,

Scientists blame an unlucky combination of global warming and freak chance. They say even with the long-predicted increase in weather extremes triggered by manmade climate change, 2011 in the U.S. was wilder than they predicted. For example, the six large outbreaks of twisters can't be attributed to global warming, scientists say.

The author hadn't read the article above, explaining how jet streams moving on top of one another can generate twisters.

As futile climate talks come to a close, new research indicates that the goal we're failing to meet is way too low

Limiting human-caused warming to 2 degrees ... would be a prescription for disaster.

...every degree Celsius of global temperature rise will ultimately equate to 20 meters of sea level rise.

...temperatures at the poles during previous epochs -- when sea level was tens of meters higher -- is not too far removed from the temperatures Earth could reach this century on a "business as usual" trajectory.

"Earth is poised to experience strong amplifying feedbacks in response to moderate additional global warming."

In periods when carbon dioxide has increased due to natural causes, the rate of increase averaged about .0001 parts per million per year -- in other words, one hundred parts per million every million years. Fossil fuel burning is now causing carbon dioxide concentrations to increase at two parts per million per year.

Paleoclimate Record Points Toward Potential Rapid Climate Changes

One sign of this acceleration is that in 2010 so much ice melted

in southern Greenland... large portions of the island's bedrock rose an additional quarter of an inch ...

Greenland ice loss lifts bedrock

So, my take home from this is that what we're doing right now, "warming at a rate of more than .1 degree Celsius every decade" where "every degree Celsius of global temperature rise will ultimately equate to 20 meters of sea level rise" means that every year we're causing around 8 inches of sea level rise in a century or so. Did I calculate this wrong? Please tell me I'm wrong.

Here's a US map showing new broken records for freezing, snow, rain, heat, and drought from Jan through Oct.

Extreme weather map

Looks like I have some catching up to do. I just noticed all the new links to visit here.

Another hint of Climate Destabilization,

December 14, 2011ARCTICThe Russian research vessel Academician Lavrentiev conducted a survey of 10,000 square miles of sea off the coast of eastern Siberia. They made a terrifying discovery – huge plumes of methane bubbles rising to the surface from the seabed. “He found more than 100 fountains, some more than a kilometer across,’ said Dr Igor Semiletov, “These are methane fields on a scale not seen before. The emissions went directly into the atmosphere. This is the first time that we’ve found continuous, powerful and impressive seeping structures, more than 1,000 meters in diameter.

Researchers shocked to find thousands of spewing methane fountains ...


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