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THE Oceans & Seas Thread pt 3

Re: THE Oceans & Seas Thread pt 3

Unread postby dohboi » Fri 22 May 2020, 11:10:21

Microplastic pollution in oceans vastly underestimated – study

Particles may outnumber zooplankton, which underpin marine life and regulate climate


https://www.theguardian.com/environment ... ated-study
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Re: THE Oceans & Seas Thread pt 3

Unread postby Keith_McClary » Thu 18 Jun 2020, 23:55:15

rockdoc123 wrote:why use the term "acidification" when "reduced alkalinity" is accurate?

Why use the term "warming" when "reduced coolness" is accurate?
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Re: THE Oceans & Seas Thread pt 3

Unread postby rockdoc123 » Fri 19 Jun 2020, 15:21:28

Why use the term "warming" when "reduced coolness" is accurate?


simply because warm is a relative term. -45 C is warmer than -50 C. A temperature rise from -50 C to -45 C in a decade hence demonstrates warming at a rate greater than if the same increase occurred over 3 decades.

Acidity, on the other hand is not a relative term when compared with the defined terms of "neutral" (ph=7.0) and alkaline (ph > 7.0). A solution with a pH of 5.0 would be more acidic than a solution of 6.0 although both are acidic. A solution with a pH of 7.5 is less alkaline than a solution with a pH of 8.0 although both are alkaline.
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Re: THE Oceans & Seas Thread pt 3

Unread postby jedrider » Wed 01 Jul 2020, 19:56:56

The BLOB, that sink hole in the North Atlantic sea, portends some sinister events about to unfold:

Why Earth has a stubborn spot that's cooling
https://mashable.com/article/cold-blob-atlantic-ocean-climate-change/

I didn't quite connect with the article, but it's like the belly button of the Oceans.

Of course, that begs the question of where the asshole is located??

That could be distributed, though, maybe everywhere.
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Re: THE Oceans & Seas Thread pt 3

Unread postby dohboi » Wed 01 Jul 2020, 20:38:32

As I understand it, it is partly driven by Greenland Ice Sheet melt, which has been going off the charts this year.
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Re: THE Oceans & Seas Thread pt 3

Unread postby JuanP » Wed 01 Jul 2020, 22:13:21

dohboi wrote:As I understand it, it is partly driven by Greenland Ice Sheet melt, which has been going off the charts this year.


That is my understanding, too. The fact that the melting Greenland ice sheets are made of freshwater while the ocean's water is saltwater is a factor in this, too, IIRC. The colder freshwater stays close to the surface while the hotter saltwater is underneath it because it is heavier.
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Re: THE Oceans & Seas Thread pt 3

Unread postby dissident » Thu 02 Jul 2020, 17:46:14

It is not simply some fresh water flux from Greenland. The atmospheric storm tracks (baroclinic eddy statistically populated pathways) are changing too. This interacts with the ocean to change the THC. Warming is a multi-variate problem that has shown almost no negative feedback channels.

The oft-mentioned salinity dilution effect on the THC has become an idee fixe with nothing else getting attention. If you notice the cold anomaly is rather far from the Greenland Sea where the salinity-driven component of the THC in the form of very narrow columns of downwelling is concentrated. And since this is not a single variable problem, raising other effects is not denying the salinity dilution contribution. This isn't retarded politics with its zero-sum retard-think.

One of the most prominent features of the coupling of the storm tracks with the ocean in the North Atlantic and North Pacific are the associated "oscillations" in sea surface temperatures and sea level pressure (NAO, NPO). These features are nonlinear since the sea surface temperatures also affect the storm tracks.

Upthread we have the number of 10,000 years thrown around for the current global ocean warming. This is a very misleading number. The seabed core analysis in the Barents Sea by a team of German climatologists has revealed warming not seen since the Miocene which is over 15,000 million years ago. The polar ocean regions are a more useful indicator of climate change than low and tropical latitudes since the relative change at low latitudes is tiny.
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