New Study: What’s Scarier than the Permian Extinction? Burn All the Fossil Fuels to Find Out.

[SSDD]

If we're causing the event to occur then we can stop it. Doing nothing is suicidal.

Show me one single shred of observed, measured, quantified, empirical evidence that supports the claim that we are causing it and not simple natural variability...just one single piece of such information...and you know what...you aren't going to be able to provide it because none exists.

 

[SSDD]

Odd how conservatives are drawn to threads like this like moths to a flame. They seem to be filling a need to hear themselves say "everything's fine, nothing to worry about". Probably the same people that find an uneven mole and tell themselves "everything's fine, nothing to worry about".

Best not to pay attention to doctors or scientists because many times they reveal a reality that is just too scary.

Cons don't you have a red cup to protest somewhere? Or some other snowflake non-issue?

You know..if Sir Issac Newton where here today, he would kick you squarely in the nuts for using his name...your position on climate change is entirely due to a belief system...completely lacking any sort of observed, measured, quantified evidence in support.

 

[westwall]

Q. How much must we lower CO2 levels from the current 409PPM in order to end Global Warming as we know it?

A. $15 Trillion

Actually it is 76 trillion dollars and the stated best outcome for that massive expenditure is to lower the global temp by ONE degree in 100 years...maybe.

 

[IsaacNewton]

Humans on the verge of causing Earth’s fastest climate change in 50m years
Posted on 17 April 2017 by dana1981

A new study published in Nature Communications looks at changes in solar activity and carbon dioxide levels over the past 420 million years. The authors found that on our current path, by mid-century humans will be causing the fastest climate change in approximately 50 million years, and if we burn all available fossil fuels, we’ll cause the fastest change in the entire 420 million year record.

Changes in atmospheric carbon dioxide and in the combined solar and carbon dioxide forcing over the past 420 million years. Illustration: Foster et al. (2017); Nature Communications.

The study relates to a scientific conundrum known as the “faint young sun paradox” – that early in Earth’s history, solar output was 70% less intense than it is today, and yet the planet was warm enough to have a liquid ocean. A stronger greenhouse effect due to higher carbon dioxide levels in the atmosphere may be one explanation.

Over time, solar output has grown stronger, and atmospheric carbon dioxide levels have fallen due to an effect known as “weathering” of rocks and an increase in plant life. The authors of this study found that over the past 420 million years, the slow heating of the sun and slow decline of the greenhouse effect have roughly offset each other, leading to a fairly stable long-term global climate.

Changes in the solar and carbon dioxide forcings over the past 420 million years. Illustration: Foster et al. (2017); Nature Communications.

In particular, as shown in the first chart above, Earth’s climate has been fairly stable over the past several million years. The wiggles in the blue line represent transitions in and out of ice ages, due to wobbles in the Earth’s orbit around the sun, amplified by changes in the amount of carbon dioxide in the atmosphere (these are known as Milankovich cycles).

In every case the line is already quite steep due to the hundreds of billions of tons of carbon pollution humans have dumped into the atmosphere thus far. The size of the global energy imbalance we’ve caused is already on par with those previous blue wiggles – Earth’s ice age transitions. If we keep burning lots of fossil fuels, we could soon cause higher carbon dioxide levels and faster climate change than the Earth has seen in 50 million years. If we burn all available fossil fuel reserves (the black “Wink12k” line), we’ll see faster climate change than in the entire 420 million year record.

It’s an alarming proposition. Climate deniers will often argue against taking action to curb carbon pollution because climate changed naturally in the past and carbon dioxide levels were higher in the past. One Republican congressman repeated these talking points in the latest House “Science” committee hearing. While both arguments are technically true, they miss several important points.

The cognitive dissonance and outright lying by many conservatives about this reality will cost the lives of millions of people.

 

[Toddsterpatriot]

Humans on the verge of causing Earth’s fastest climate change in 50m years
Posted on 17 April 2017 by dana1981

A new study published in Nature Communications looks at changes in solar activity and carbon dioxide levels over the past 420 million years. The authors found that on our current path, by mid-century humans will be causing the fastest climate change in approximately 50 million years, and if we burn all available fossil fuels, we’ll cause the fastest change in the entire 420 million year record.

Changes in atmospheric carbon dioxide and in the combined solar and carbon dioxide forcing over the past 420 million years. Illustration: Foster et al. (2017); Nature Communications.

The study relates to a scientific conundrum known as the “faint young sun paradox” – that early in Earth’s history, solar output was 70% less intense than it is today, and yet the planet was warm enough to have a liquid ocean. A stronger greenhouse effect due to higher carbon dioxide levels in the atmosphere may be one explanation.

Over time, solar output has grown stronger, and atmospheric carbon dioxide levels have fallen due to an effect known as “weathering” of rocks and an increase in plant life. The authors of this study found that over the past 420 million years, the slow heating of the sun and slow decline of the greenhouse effect have roughly offset each other, leading to a fairly stable long-term global climate.

Changes in the solar and carbon dioxide forcings over the past 420 million years. Illustration: Foster et al. (2017); Nature Communications.

In particular, as shown in the first chart above, Earth’s climate has been fairly stable over the past several million years. The wiggles in the blue line represent transitions in and out of ice ages, due to wobbles in the Earth’s orbit around the sun, amplified by changes in the amount of carbon dioxide in the atmosphere (these are known as Milankovich cycles).

In every case the line is already quite steep due to the hundreds of billions of tons of carbon pollution humans have dumped into the atmosphere thus far. The size of the global energy imbalance we’ve caused is already on par with those previous blue wiggles – Earth’s ice age transitions. If we keep burning lots of fossil fuels, we could soon cause higher carbon dioxide levels and faster climate change than the Earth has seen in 50 million years. If we burn all available fossil fuel reserves (the black “Wink12k” line), we’ll see faster climate change than in the entire 420 million year record.

It’s an alarming proposition. Climate deniers will often argue against taking action to curb carbon pollution because climate changed naturally in the past and carbon dioxide levels were higher in the past. One Republican congressman repeated these talking points in the latest House “Science” committee hearing. While both arguments are technically true, they miss several important points.

The cognitive dissonance and outright lying by many conservatives about this reality will cost the lives of millions of people.

How many trillions should we spend on windmills and solar?
How much cooler will it be in 2080 if we do?