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Improving models simulating key climate patterns in the Northern Hemisphere
Phys.org ^ | March 22, 2023 | by Li Yuan, Chinese Academy of Sciences

Posted on 03/22/2023 6:40:55 AM PDT by Oldeconomybuyer

The warm Arctic-cold Eurasia (WACE) climate pattern is the main feature of winter temperatures in the Northern Hemisphere in the last 20 years. Extreme cold events related to this pattern have occurred frequently there.

The ability of climate models to simulate WACE directly affects the skill in simulating winter temperature. Past studies have shown that previous generations of climate models were poor at simulating midlatitude atmospheric response to sea ice, making them simulate a weaker than observed WACE.

Now, scientists from the Institute of Atmospheric Physics of the Chinese Academy of Sciences, China Meteorological Administration and Nanjing University of Information Science and Technology have evaluated the ability of CMIP6 models (i.e., models participating in phase 6 of the Coupled Model Intercomparison Project) to simulate WACE and revealed the key factors influencing the differences in simulation capability.

The findings were published in Advances in Atmospheric Sciences.

Results showed that the CMIP6 multi-model ensemble mean was better able to simulate WACE, but there were still large gaps among individual models. Models with good ability in simulating climatic states and extremes of Eurasian winter temperatures also showed more skill in simulating WACE.

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


TOPICS: Miscellaneous; Outdoors; Science
KEYWORDS: globalwarming; hoax; models; propaganda; socialism

1 posted on 03/22/2023 6:40:55 AM PDT by Oldeconomybuyer
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To: Oldeconomybuyer

Remember back when Pangaea existed?


2 posted on 03/22/2023 6:43:34 AM PDT by rktman (Destroy America from within? Check! WTH? Enlisted USN 1967 to end up with this? šŸ˜•)
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To: Oldeconomybuyer

Warm is good for humans. Review the Roman literature.


3 posted on 03/22/2023 6:43:52 AM PDT by Paladin2
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To: rktman
Remember back when Pangaea existed?

Oh man, we used to load up the ol' station wagon and drive across the world.

4 posted on 03/22/2023 6:45:06 AM PDT by Sirius Lee (They intend to murder us. Prep if you want to live and live like you are prepping for eternal life)
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To: rktman

5 posted on 03/22/2023 6:46:35 AM PDT by dfwgator (Endut! Hoch Hech!)
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To: Oldeconomybuyer

“Improving climate models” = ‘the phony ones we’ve been using to scare the ignorant haven’t matched actual climate’


6 posted on 03/22/2023 6:53:58 AM PDT by G Larry ( "woke" means 'stupid enough to fall for the promotion of every human weakness into a virtue')
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To: G Larry

Right. There are about 33 general climate models recognized by the IPCC, none of them are accurate none of them even agree with each other.


7 posted on 03/22/2023 6:59:27 AM PDT by hinckley buzzard ( Resist the narrative.)
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To: Oldeconomybuyer

“Now, scientists from the Institute of Atmospheric Physics of the Chinese Academy of Sciences, China Meteorological Administration and Nanjing University of Information Science and Technology have evaluated the ability of CMIP6 models (i.e., models participating in phase 6 of the Coupled Model Intercomparison Project) to simulate WACE and revealed the key factors influencing the differences in simulation capability.”

In other words, climate models are still extremely unreliable and should not be used as evidence to steal money from Americans and give it to tin pot dictators and the WEF.


8 posted on 03/22/2023 7:03:18 AM PDT by EQAndyBuzz (ā€œRacistā€ is the new ā€œNaziā€.)
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To: Oldeconomybuyer

Our local TV weather guy often shows the score of models he uses for his forecasts. The models for predicted snowfalls frequently show estimates ranging from a trace to multiple inches with no relative agreement. If these much vaunted models canā€™t reasonably estimate local snowfall for a 48 hour period how can models predict global climate decades in the future?


9 posted on 03/22/2023 7:05:44 AM PDT by The Great RJ
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To: Oldeconomybuyer

Amazing!! They make computer models of what already has happened and claim high accuracy in predicting what has already happened.


10 posted on 03/22/2023 7:13:51 AM PDT by pfflier
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To: Oldeconomybuyer
Well...there are some weather models I can get behind...


11 posted on 03/22/2023 7:17:20 AM PDT by moovova ("The NEXT election is the most important election of our lifetimes!ā€œ LOL...)
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To: Oldeconomybuyer
Oh, sooooo the old models were wrong!

Models are not science. Models are always abstractions of what is being modeled. That means you never have all the variables, data, and behavior. Proof: if you did, you would have the real thing. The scientific process requires peer review and peer replication of experiment results. Pumping the same data through a model will always yield the same results. Peer review then amounts to monkeys pushing a button on a computer.

I am not saying modeling is useless. I spent nearly 30 years modeling software as a software engineer. But that is just a step in creating software. Ultimately, the actual software was written. The real thing was created, in full, without abstraction. It was concrete.

Climate models are never the real thing. A real, concrete climate requires a duplicate of Earth, the Sun, the moon and everything that influences climate.

12 posted on 03/22/2023 7:19:24 AM PDT by ConservativeInPA ("How did you go bankrupt?" Bill asked. "Two ways," Mike said. "Gradually and then suddenly." )
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To: hinckley buzzard

I am not aware of a single climate model or simulation that has successfully completed Independent Verification & Validation (IV&V).

I have yet to see a climate model or simulation that can return a consistent result for the same set of test inputs.


13 posted on 03/22/2023 7:29:19 AM PDT by Natty Bumppo@frontier.net (We are the dangerous ones, who stand between all we love and a more dangerous world.)
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To: hinckley buzzard

The best prediction has the Russian model (forgot the name).
Unlike the others, it does not follow the heard mentality of the others.


14 posted on 03/22/2023 7:44:50 AM PDT by AZJeep
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To: hinckley buzzard
Right. There are about 33 general climate models recognized by the IPCC, none of them are accurate none of them even agree with each other.

Interesting. Just out of curiosity, a brief online search didnā€™t yield evidence that the IPCC has adopted 33 climate models. Maybe Iā€™m not looking in the right place.

15 posted on 03/22/2023 8:20:48 AM PDT by yelostar (Stay strong. Stay fierce. Stay SKEPTICAL. Never surrender your freedom, and donā€™t buy the narratives)
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To: moovova

Real or implants?


16 posted on 03/22/2023 9:17:35 AM PDT by MikeSteelBe (The South will be in the right in the next war of Northern aggression.)
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To: Oldeconomybuyer

Computer models = GIGO


17 posted on 03/22/2023 10:20:25 AM PDT by JimRed (TERM LIMITS, NOW! Militia to the border! TRUTH is the new HATE SPEECH.)
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To: AZJeep
The best prediction has the Russian model (forgot the name). Unlike the others, it does not follow the heard mentality of the others.
When that idiot Michael Mann went looking to count tree rings in Siberia, he already knew what he wanted to find. Confirmation bias is of the worst evils in this world.
18 posted on 03/22/2023 2:50:49 PM PDT by nicollo ("I said no!")
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To: MikeSteelBe

“Real or implants?”

Who cares, LOL. As long as she’ll escort me to the next Annual Moovova Extended Family Picnic.

I want to see some jaws drop.


19 posted on 03/23/2023 5:37:06 AM PDT by moovova ("The NEXT election is the most important election of our lifetimes!ā€œ LOL...)
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