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How can man-made climate change be proven?
Phys.Org ^ | November 9, 2017 | by Lukas Gud­munds­son

Posted on 11/09/2017 11:40:58 AM PST by Oldeconomybuyer

If observed climate variables such as temperature or precipitation change over time, it raises the question as to whether human influence plays a role. To investigate this, scientists are applying a method for estimating causal relationships.

The fact that greenhouse gases emitted by humans are changing the global climate system is scientifically undisputed. Climate researchers often look to the future with their models and try to calculate how the increasing concentration of CO2 in the atmosphere will affect various climate variables.

To test whether these climate variables are influenced by rising greenhouse gas emissions from human activities, scientists have developed the detection and attribution method.

The method involves a combined analysis of long observation series and simulation experiments in which climate models are calculated both with and without human influence in order to compare them with the actual observations. If the latter are only reproduced by the simulations with emissions, it can be concluded that man-made climate change is demonstrable in the observations.

The detection and attribution method is an important instrument for climate research and was used in the last UN climate report in the chapter on the evidence of man-made climate change.

(Excerpt) Read more at phys.org ...


TOPICS: Culture/Society; Government; News/Current Events; Politics/Elections
KEYWORDS: fakescience; globalwarming; hoax; propaganda; socialism
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1 posted on 11/09/2017 11:40:58 AM PST by Oldeconomybuyer
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To: Oldeconomybuyer

Interestingly newseek reported just this week that a big reason that the Ross Ice Shelf keeps melting & cleaving is that there’s a large volcano network underneath it (about the size of Yellowstone’s).

Funny how for decades environmentalists have been saying it’s caused by carbon, now they’re forced to admit it’s volcanics.

http://www.newsweek.com/antarctica-melting-below-mantle-plume-almost-hot-yellowstone-supervolcano-705086


2 posted on 11/09/2017 11:46:00 AM PST by Thalean
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To: Oldeconomybuyer

That’s the beauty of it. It can never be proven BECAUSE it is always changing.


3 posted on 11/09/2017 11:49:10 AM PST by Sacajaweau
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To: Oldeconomybuyer

Well, when absolutely nothing changes in fifty years, we will have our answer.


4 posted on 11/09/2017 11:49:35 AM PST by heights
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To: Oldeconomybuyer

Yup.


5 posted on 11/09/2017 11:50:48 AM PST by sauropod (I am His and He is Mine)
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To: Oldeconomybuyer

Utilize liberal media, politicians and celebrities to keep pounding the meme and eventually it becomes (accepted) fact.


6 posted on 11/09/2017 11:50:48 AM PST by umgud
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To: Oldeconomybuyer

Here’s an even greater challenge. Can it ever be disproven?


7 posted on 11/09/2017 11:51:26 AM PST by GMMC0987
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To: Oldeconomybuyer

Biased headline and article.

Assumes the man-made climate change mantra is true and all that is lacking is a way to prove it.


8 posted on 11/09/2017 11:51:33 AM PST by Vlad The Inhaler (United We Stand - Divided We Fall. Remember: Diversity is the opposite of unity.)
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To: Oldeconomybuyer
How can man-made climate change be proven?

Well.....it can’t....because it doesn’t exist

9 posted on 11/09/2017 11:52:29 AM PST by Vaquero (Don't pick a fight with an old guy. If he is too old to fight, he'll just kill you.)
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To: Oldeconomybuyer
The answer to that question is well known - the signal for anthropogenic climate change, is increase warming in tropical mid-troposphere.


According to the 'climate change' theory, the real warming is not caused by CO2, it's by a positive feedback of increased water vapor. The CO2 is simply a trigger that starts the positive feedback.

So, if 'global warming' is occurring, we should see increased levels of water vapor in the atmosphere. But, since level of water vapor (humidity levels) constantly change, how do you get a constant measurement. There are places in the tropics that maintain a constant level of humidity. If the theory is correct, you should see this humidity move up into higher levels of the atmosphere.

So, the signature for man-made global warming, is warming in the tropics, it's in EVERY climate model, and is called the 'tropical mid-troposphere hotspot', and climatologists have been looking for it for decades, the problem is they haven't been able to find it, because it doesn't exist!
10 posted on 11/09/2017 11:56:19 AM PST by MMaschin (The difference between strategy and tactics!)
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To: Oldeconomybuyer

All the doomsday predictions are so far into the future that no one living today will be alive at that time. The claims of model accuracy is questionable; they can’t reliably tell me if it will rain two weeks from today.

How can they predict volcanic activity anytime in the future? If they could, earthquakes wouldn’t be a surprise.

Sun activity is as unpredictable as volcanic years into the future.

The idea is to frighten people enough so they can tax the hell out of them. These liberals wear me out.


11 posted on 11/09/2017 11:58:12 AM PST by Joe Bfstplk (A Texas Deplorable.)
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To: Oldeconomybuyer
...simulation experiments in which climate models are calculated both with and without human influence...

Translation: The answer will be whatever we want it to be.

12 posted on 11/09/2017 11:58:20 AM PST by BitWielder1 (I'd rather have Unequal Wealth than Equal Poverty.)
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To: Oldeconomybuyer

Double whammy. The scientific method says nothing about “proving” anything, and fails on yet another level when scrutinizing a political lie.


13 posted on 11/09/2017 11:59:09 AM PST by SpaceBar
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To: Sacajaweau

Yep. You cannot prove it’s man-made but you sure can convince a lot of stupid people that it is!


14 posted on 11/09/2017 12:00:49 PM PST by Maskot (Put every dem/lib in prison...like yesterday.)
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To: Oldeconomybuyer

https://www.bing.com/videos/search?q=climate+change+professor+nobel+prize&&view=detail&mid=6D055AC5195C997970D16D055AC5195C997970D1&FORM=VRDGAR


15 posted on 11/09/2017 12:01:22 PM PST by Sacajaweau
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To: Sacajaweau

Please read the link of my last post. You will never doubt again.


16 posted on 11/09/2017 12:02:00 PM PST by Sacajaweau
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To: Sacajaweau

bump


17 posted on 11/09/2017 12:02:58 PM PST by Bob434
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To: SpaceBar

Just because the earth “was” a certain temperature at a certain time...doesn’t mean it should always be that temperature. In fact, it’s ridiculous.


18 posted on 11/09/2017 12:03:38 PM PST by Sacajaweau
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To: Oldeconomybuyer

If some of their predictions would ever come true we might believe them. How many times have they predicted that Miami would be underwater in 10 years if we don’t...give them totalitarian government? It’s very much unlike the prediction for the solar eclipse in August which was spot on.


19 posted on 11/09/2017 12:06:50 PM PST by libertylover (Kurt Schlicter: "They wonder why they got Trump. They are why they got Trump")
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To: Oldeconomybuyer

“The fact that greenhouse gases emitted by humans are changing the global climate system is scientifically undisputed.”

Well I guess that settles it then. No need to prove anything. What a ridiculous thing to say given the headline. It just proves pure propaganda.


20 posted on 11/09/2017 12:07:26 PM PST by Revel
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