Author Topic: Atlantic Meridional Overturning Circulation, aka Gulf Stream  (Read 1395 times)

rcjordan

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Atlantic Meridional Overturning Circulation, aka Gulf Stream
« on: November 12, 2021, 03:16:37 PM »
Debbie: UK, Scandinavia screwed if this progresses.

Concern grows over Atlantic Ocean ‘conveyor belt’ shutdown
https://www.aljazeera.com/news/2021/11/12/concern-grows-over-atlantic-ocean-conveyor-belt-shutdown

creative666

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rcjordan

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #2 on: December 01, 2021, 04:47:40 PM »
Debbie says that she's been seeing Atlantic storm formation shift slightly north over the last 3 or 4 years.  She's not seen this shift confirmed by any weather services, but this year was particularly off the usual pattern. If this shift IS occurring the heavily populated Maryland-Massachusetts coastal corridor and even the UK could be hit.  This year, the US Atlantic coast was repeatedly saved by unusual offshore winds and -maybe- the Saharan dust storms.  The question is whether the changes in the Gulf Stream are behind some of this shifting?

Atlantic hurricanes slightly below normal in 2021 | AccuWeather  (But total storm activity was the 3rd highest)
https://www.accuweather.com/en/hurricane/atlantic-hurricanes-slightly-below-normal-in-2021/1053374

2021 the 3rd most active hurricane season, but that’s not complete picture
https://www.news4jax.com/weather/2021/11/30/2021-the-third-most-active-hurricane-season-but-thats-not-complete-picture/


rcjordan

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #3 on: December 31, 2021, 01:41:21 AM »
>Debbie says that she's been seeing Atlantic storm formation shift slightly north over the last 3 or 4 years.  She's not seen this shift confirmed by any weather services

Bingo!

'been observed that the latitude at which hurricanes reach their maximum intensity has moved northward so that that is a shift'

CT Will be More Susceptible to Hurricanes in The Future – NBC Connecticut
https://www.nbcconnecticut.com/news/local/ct-will-be-more-susceptible-to-hurricanes-in-the-future-study/2681834/

rcjordan

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #4 on: January 13, 2022, 12:04:42 AM »
>Concern grows over Atlantic Ocean ‘conveyor belt’ shutdown

Uh-oh. This has happened before and....

Winter is coming: Researchers uncover a surprising cause of the Little Ice Age | NSF - National Science Foundation
https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=304203&WT.mc_id=USNSF_1

ergophobe

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #5 on: January 13, 2022, 03:29:37 AM »
I was curious what the data sources for that are... unfortunately, I only vaguely understand phrases like

Quote
Stable oxygen isotope (d18O) measurements of two speleothems, collected from Huagapo Cave in the central Peruvian Andes and with overlapping age from 1.1 to 1.4 ka, characterize tropical South American climate variability over the last 7150 years.

It is interesting though. There have been a lot of theories including that the depopulation of the Americas as a result of massive die-off due to introduction of European diseases resulted in massive reforestation and carbon sequestration. AFAIK the current opinion is that that is not a cause or not a significant cause.

Torben

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #6 on: January 13, 2022, 07:57:57 AM »
You'd think that we can fix this with global warming  ;)

rcjordan

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #7 on: January 20, 2022, 09:45:38 PM »
>Little Ice Age > fresh water in the oceans

A68: 'Megaberg' dumped huge volume of fresh water - BBC News
https://www.bbc.com/news/science-environment-60060299

rcjordan

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Re: Atlantic Meridional Overturning Circulation, aka Gulf Stream
« Reply #8 on: April 27, 2022, 09:43:50 PM »
A Major Ocean Current Is at Its Weakest Point in 1,000 Years - Scientific American
https://www.scientificamerican.com/article/a-major-ocean-current-is-at-its-weakest-point-in-1-000-years/