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O2 ocean levels decreasing?" (Read 418 times)

lee

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O2 ocean levels decreasing?"
Feb 3^rd, 2022 at 3:46pm

Ocean deoxygenation (i.e., loss of oxygen) due to climate change can result in marine environment deterioration. Here we applied a time of emergence method to detect when and where the signals of oceanic oxygen change would emerge from its internal variability in the epipelagic, mesopelagic, and bathypelagic zones. The results from climate model simulations under low-emission conditions (XGHG) and high-emission conditions (RCP8.5) show that the emergence of deoxygenation is projected to occur earliest and most widespread in the mesopelagic zone. Under the RCP8.5 scenario, more than 72% of the global ocean is projected to experience an emergence of deoxygenation before 2080 for all three vertical zones. Regionally, the emergence of deoxygenation is projected to be widespread below the epipelagic zone of the western North Pacific, North Atlantic, and Southern Oceans before 2080. ToE and the spatial coverage of deoxygenation are both important for fisheries and other marine resources protection."

https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL095370

Well the models tell them so. The models even give them DATA. Roll Eyes

RCP8.5? Oh dear.

How much was that ocean warming again? 14 +/-11 Zettajoules or 0.005ºC +/-0.004ºC. And apparently the models can tell the difference.

Of course fish can move habitat. Fish have survived warmer (less O2).

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Jasin

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Re: O2 ocean levels decreasing?"
Reply #1 - Feb 3^rd, 2022 at 7:39pm

Heaps of de-oxygenated 'DEAD ZONES' everywhere around the world now.

Trawlers running chains across fertile ocean floors to turn them into dust and wastelands.
Pollutants and Farm runoffs - sterilising the ocean environments.

So far, Humans have proven to be nothing but a Parasite, a Virus and a Cancerous growth to Life on this Planet.
Humans are nothing but Death, to this world so far.

The insanity of NASA and Scientists cracking a fat over trying to colonise Mars. Roll Eyes

F*uckwits!

AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.

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lee Gold Member Offline Australian Politics Posts: 18040 Gender:	Re: O2 ocean levels decreasing?" Reply #2 - Feb 3^rd, 2022 at 8:19pm Do you have a link for that?
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Jasin Gold Member Offline Posts: 49757 Gender:	Re: O2 ocean levels decreasing?" Reply #3 - Feb 4^th, 2022 at 8:52pm lee wrote on Feb 3^rd, 2022 at 8:19pm: Do you have a link for that? Look up Black Sea and other places where 'dead zones' are growing due to lack of oxygen in the depths.
Back to top	AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY. IP Logged

lee

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Re: O2 ocean levels decreasing?"
Reply #4 - Feb 4^th, 2022 at 9:07pm

Jasin wrote on Feb 4^th, 2022 at 8:52pm:

Look up Black Sea and other places where 'dead zones' are growing due to lack of oxygen in the depths.

Strange that none of them differentiate between natural causes and man.

"Although it was already known that some serious dead zones too place during the ice age, UCSC's scientists analyzed rock sediment from the Bering Sea, and found that dead zones have regularly occurred in the Pacific Ocean during significant warming events for millions of years. And now, it's believed that more intense bouts of hypoxia are happening more frequently, because both temperatures and sea levels are rising at an alarmingly quick rate."

https://www.weforum.org/agenda/2021/06/dead-zones-have-been-around-for-millions-...

I have seen that farm runoff may be a cause. However -

"At 2,116 square miles 5480 square kilometers, the 2020 hypoxic zone in the Gulf of Mexico is the 3rd smallest ever measured in the 34-year record, measured from July 25 to August"

https://oceanservice.noaa.gov/podcast/feb18/nop13-hypoxia.html

But no evidence of reduced farm run-off. Bizarre.

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Jasin

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Re: O2 ocean levels decreasing?"
Reply #5 - Feb 6^th, 2022 at 7:32pm

Yes, well - there is always the open debate wether it is a natural occurance or Human-made??
It's a hard call really. We Humans are a part of this natural world, so even if we are accelerating change or extinction levels (which is more obvious, since the dawn of Sapiens who exterminated many Mega Fauna around the world) - maybe this too is a natural occurance?

When it comes to 'life' on this planet - humans have so far only contributed to a parasitic, cancerous, exploitive effort.

AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.

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Laugh till you cry Gold Member Offline Posts: 16619 In your happy place Gender:	Re: O2 ocean levels decreasing?" Reply #6 - Feb 6^th, 2022 at 8:34pm The great philosopher George W Bush said that Fish and folks can coexist peacefully. What say you FleaDriver?
Back to top	Please don't thank me. Effusive fawning and obeisance of disciples, mendicants, and foot-kissers embarrass me. IP Logged

Jasin Gold Member Offline Posts: 49757 Gender:	Re: O2 ocean levels decreasing?" Reply #7 - Feb 6^th, 2022 at 8:38pm Fish can talk. Ltyc can only dribble.
Back to top	AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY. IP Logged

Laugh till you cry Gold Member Offline Posts: 16619 In your happy place Gender:	Re: O2 ocean levels decreasing?" Reply #8 - Feb 6^th, 2022 at 8:47pm Jasin wrote on Feb 6^th, 2022 at 8:38pm: Fish can talk. Ltyc can only dribble. JaSin DoLittle squeaks.
Back to top	Please don't thank me. Effusive fawning and obeisance of disciples, mendicants, and foot-kissers embarrass me. IP Logged

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