Sentences with phrase «warming in a feedback loop»

Not exact matches

Polyakov says a positive feedback loop is underway, in which less summer sea ice will lead to warmer winter waters and even less summer ice in subsequent years.

The release of that carbon can, in turn, cause additional warming and the release of more carbon, something scientists call a positive feedback loop.

The warming, in turn, could further reduce cloud cover, possibly producing a feedback loop.

Vegetation change underway in boreal forests as a result of climate change creates a feedback loop that prompts more warming, scientists say

Sea ice reflects most of the sun's energy, he explained, whereas the open ocean absorbs more energy, and thus the disappearance of sea ice triggers even more warming, in a positive - feedback loop called albedo.

The feedback loops work like this: During a warm summer with clear skies and lots of solar radiation pouring in, the surface starts to melt.

That means that especially in places like Finland, Siberia, and Canada this feedback loop may reduce warming substantially.

The carbon dioxide amplifies the warming power of carbon pollution in a vicious feedback loop.

«Some feedback loop or other processes that aren't accounted for in these models — the same ones used by the IPCC for current best estimates of 21st Century warming — caused a substantial portion of the warming that occurred during the PETM (Palaeocene - Eocene thermal maximum of 55 million years ago)», oceanographer Gerald Dickens, a professor of Earth science at Rice University and study co-author said.

This in turn leads to substantially more warming, creating a feedback loop.

Capturing more carbon means less ends up in the atmosphere to warm the planet — this is the negative feedback loop.

At the same time, warming in the Arctic is leading to a worrisome feedback loop.

This causes a warming / CO2 feedback loop and we end up perhaps 5C warmer in an interglacial.

How many feedback loops do we need to see in the news before we realize that an unstoppable, runaway, warming event is taking place?

The water vapour theory suggests that a small increase in CO2 will result in a large positive feedback loop from water vapour and this feedback loop will lead to dangerous warming.

Interested in status of latest estimate of when irreversible tipping point thresholds of various cascading feedback loops of global warming might be exceeded...

Now, if warming also causes increased CO2, then we may be talking about a positive feedback loop in which the warming spirals upwards, which amplifies the warming effect of whatever CO2 we humans contribute to the atmosphere.

I'm not saying this is like arranging deck chairs on the Titanic as it either A) more quickly or B) more slowly heads toward the ice berg, but I think we (as people, if not as scientists) should now start being concerned about reaching milestones in the warming (whether we reach them faster or slower) at which positive feedback loops kick in — even if this is difficult scientifically to quantify or prove.

However, what you don't seem to appreciate is the risk of methane feedback, where the warming effect of the methane leads to further methane emissions in a vicious feedback loop.

A positive cloud feedback loop posits a scenario whereby an initial warming of the planet, caused, for example, by increases in greenhouse gases, causes clouds to trap more energy and lead to further warming.

Mike Roddy has referred to many times before in here; the feedback loops, I've read terms like «Committed Warming» referring to the fact that no matter what we try to do or not do to mitigate climate change, it is still predicted to get considerably warmer for at least the next 100 years.

Such a feedback loop could result in accelerated warming throughout the globe, which will strongly impact ongoing climate change mitigation and adaptation efforts.

As a result, the government has had to import more diesel, borrowing about $ 30 million this year alone to make up for the electricity shortfall, hurting its budget and increasing climate - warming emissions in a catastrophic feedback loop.

The study, which has not yet been peer reviewed, brings new importance to a feedback loop in the ocean near Antarctica that results in cooler freshwater from melting glaciers forcing warmer, saltier water underneath the ice sheets, speeding up the melting rate.

The retreat of glaciers and shrinking of the Greenland ice sheet in the Arctic, for example, is predicted to cause significant sea - level rise, changes in the salinity of our oceans, and altered feedback loops that will make the Arctic warm up even faster.

«In this condition, the ice sheet will continue to absorb more solar energy in a self - reinforcing feedback loop that amplifies the effect of warming,» wrote Ohio State polar researcher Jason Box on the meltfactor.org bloIn this condition, the ice sheet will continue to absorb more solar energy in a self - reinforcing feedback loop that amplifies the effect of warming,» wrote Ohio State polar researcher Jason Box on the meltfactor.org bloin a self - reinforcing feedback loop that amplifies the effect of warming,» wrote Ohio State polar researcher Jason Box on the meltfactor.org blog.

When other feedback loops are included, the total warming from a potential 1 °C change caused by CO2 is, in reality, as much as 3 °C.

In review, the AGW theory is based on a CO2 - induced warming of the lower atmosphere, at a rapid and accelerating warming rate - this being a result of the theory's speculative positive feedback loop.

The releasing methane then greatly contributes to feedback loops which, in turn, radically worsen the overall warming of the planet.

This in turn leads to substantially more warming, creating a feedback loop.

At a recent debate at Oxford University, organized by the OU Engineering Society, I gave the undergraduates an argument from process engineering (which you will find in outline in my Union College presentation, and in more detail in my Hartford College lecture) to the effect that the closed - loop temperature - feedback gain in the climate system (i.e., the product of the Planck parameter and the net sum of all unamplified feedbacks) can not much exceed 0.1, implying at most 1.3 K of warming per CO2 doubling, compared with the IPCC's central estimate of 3.3 K.

In fact, it was one of my criticisms earlier that AGW theory seems overly intent on finding positive feedback loops, while not considering negative feedbacks seriously enough — one such potential negative feedback is that on a warmer Earth, more water is evaporated into clouds, in turn cooling things back ofIn fact, it was one of my criticisms earlier that AGW theory seems overly intent on finding positive feedback loops, while not considering negative feedbacks seriously enough — one such potential negative feedback is that on a warmer Earth, more water is evaporated into clouds, in turn cooling things back ofin turn cooling things back off.

In one of the troubling feedback loops of the changing climate, dark ice is partially caused by the warmer Arctic summers climate change has brought us: More warmth means less fresh snowfall to cover areas of accumulated sediment, changes to the shape and size of ice grains that make them less reflective, and more liquid near the surface.

CO2 can act as both a primary driver, if humans burn fossil fuels to increase CO2 levels, and a secondary driver (part of the positive feedback loop) if CO2 levels increase naturally as a result of other forcings which cause a warming and which, in turn, lead to increased CO2 levels.

It is worth noting that wildfire incidences like this one, which are occurring across the globe now more frequently, with greater severity, and causing more damage than ever, also function as yet another feedback loop in regard to ACD: As the planet warms, arid regions dry further, causing more wildfires, which warm the planet further, and so the cycle amplifies itself.

There's an interesting diagram here http://ccgi.newbery1.plus.com/blog/?p=322 which tries to analyse the nature of positive feedback loops in the growth of the global warming «story».

If warming and CO2 «trigger multiple feedback loops» then how did the dinosaurs not all burn to death in global temperatures 10C higher and CO2 of 2000 - 3000 ppm?

«We found for a given amount of warming, there is an extra amount of carbon released, which would lead to further warming — in other words, a feedback loop,» says Koven.

In fact, if we continue on our current path of high heat - trapping emissions, the region is projected to see forest fires during June and July at two to three times its current rate.2, 6 Some 1 billion metric tons of organic matter and older - growth trees could burn7, 15 — accelerating the release of stored carbon and creating a dangerous global warming amplification or feedback loop.5, 14

It's even possible that that the Triple R played a role in sustaining itself by reducing North Pacific storm activity and preventing vertical mixing of cooler sub-surface ocean water, culminating in a self - reinforcing feedback loop by which atmospheric ridging led to warm SSTs, which in turn led to more ridging, and so on.

The widely held global warming belief is that human Co2 greenhouse gases will soon cause, via a positive feedback loop, a rapid tipping point warming of the lower atmosphere, resulting in a destruction of Earth's surface and an eventual decimation of civilization.

«The trend in sea ice decline, lack of winter recovery, early onset of spring melting, and warmer - than - average temperatures suggest a system that is trapped in a loop of positive feedbacks, in which responses to inputs into the system cause it to shift even further away from normal.

What happened in the Arctic, was a slow, very slow and gradual decrease in cooling, caused by progressively longer warmer seasons, with a feedback loop of warm air reducing albedo, with reduced albedo increasing warm air.

Feedback loop In a feedback loop, rising temperatures on the Earth change the environment in ways that affect the rate of Feedback loop In a feedback loop, rising temperatures on the Earth change the environment in ways that affect the rate of warminIn a feedback loop, rising temperatures on the Earth change the environment in ways that affect the rate of feedback loop, rising temperatures on the Earth change the environment in ways that affect the rate of warminin ways that affect the rate of warming.

To make matters worse, the earlier loss of snow in the region could trigger the dreaded albedo effect — basically a positive feedback loop in which melting snow exposes the ground, leading to more heat being absorbed and, eventually, more warming.

Those facts are, in principle, taught at school and at university, but one still manages to incriminate CO2 alongside this learning, in using a dirty trick that presents the warming effect of CO2 as minor but exacerbated, through feedback loops, by the other greenhouse effects.

That means that especially in places like Finland, Siberia, and Canada this feedback loop may reduce warming substantially.