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Topic: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial (Read 110 times) previous topic - next topic

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Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial
Haven't had a good look at this yet. It's an epic project. Following Dave's primitive ramblings on C14 I thought this might be interesting.

https://www.nature.com/articles/s41467-017-00577-6
"That which can be asserted with evidence can also be dismissed without evidence." (Dave Hawkins)

  • F X
  • The one and only
Re: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial
Reply #1
pity reply
"If you pick up a starving dog and make him prosperous he will not bite you. This is the principal difference between a dog and man."
― Mark Twain 🔭

Re: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial
Reply #2
Quote
An ensemble of transient meltwater simulations shows that Antarctic-sourced salinity anomalies can generate climate changes that are propagated globally via an atmospheric Rossby wave train.

Here we see a cameo of everything that has gone so horribly wrong with climate science.  Now we codify a model in a deeply non-linear system with ill-understood or unknown feedbacks, don't demonstrate any predictive skill yet claim it has some relevance.  This model is entirely unvalidated and has zero demonstrated predictive skill.  So what we do then is to make more of them and call them an 'ensemble' in an effort to credit them with more skill en masse than any individual model.  The paradigm has become that the average of invented bullshit must be true.

The "ensemble of transient meltwater simulations" shows precisely the square root of fuck all other than the guesses of the people who codified the simulations.

  • MikeS
Re: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial
Reply #3
Cephus0 becomes a climatologist modeling genius ITT.

  • F X
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Re: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial
Reply #4
Here we see a cameo of everything that has gone so horribly wrong with climate science.
I disagree.  They are trying to figure out why things happened as they did, in the past.   The deep ocean conveyor is a very important thing to understand.
"If you pick up a starving dog and make him prosperous he will not bite you. This is the principal difference between a dog and man."
― Mark Twain 🔭

  • F X
  • The one and only
Re: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial
Reply #5
While the amount of heat transported by the oceans is estimated to equal the atmosphere, the mechanism is driven by salinity and the sinking of cold water.  Fresh water from melting ice (on land) can change the amount of deep water transport, seriously changing the global climate.

https://oceanservice.noaa.gov/facts/conveyor.html

Changes in the arctic actually can change the climate in Antarctica, and possibly the other way around.  It's complicated, but fascinating.
"If you pick up a starving dog and make him prosperous he will not bite you. This is the principal difference between a dog and man."
― Mark Twain 🔭