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Old 25-06-2021, 21:01   #31
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Re: Climate Change - sea level rises.

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Originally Posted by GrimUpNorth View Post
Except when we melt enough of the polar ice and the fresh water disrupts the North Atlantic Conveyor, the corresponding changes to the Gulf Stream could well result in our climate becoming colder which would pretty much screw up your plans!

Spot on.
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Old 25-06-2021, 21:18   #32
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Re: Climate Change - sea level rises.

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Originally Posted by nomadking View Post
As I've previously pointed out, a mere 9,000 years ago Devon Island in Canada within the Arctic Circle was warm enough to grow plants, and yet nowadays is covered in ice and glaciers and is too cold and inhospitable to be inhabited. That's a blink of the eye in geological terms.
As has been previously pointed out, this happened over centuries - we are accelerating the process.
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Old 25-06-2021, 21:20   #33
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Re: Climate Change - sea level rises.

I thought the Climate Change crowd are saying that temperatures are going to rise? If it does cool down that will reverse the thermal expansion component of predicted sea level rises.
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Old 25-06-2021, 21:25   #34
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Re: Climate Change - sea level rises.

"The climate change crowd"?
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Old 25-06-2021, 21:31   #35
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Re: Climate Change - sea level rises.

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Originally Posted by nomadking View Post
I thought the Climate Change crowd are saying that temperatures are going to rise? If it does cool down that will reverse the thermal expansion component of predicted sea level rises.
Just have a read up on the impacts of fresh water in the North Atlantic and it'll tell you everything you need to know. I'm surprised you didn't give us any links or quotes
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Old 25-06-2021, 21:33   #36
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Re: Climate Change - sea level rises.

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Originally Posted by Hugh View Post
As has been previously pointed out, this happened over centuries - we are accelerating the process.
Devon island went from greenery to thick ice over a period of 9,000 years. That's a very big change which must have happened in shorter stages. Broken up into periods of a few centuries at a time is still large natural changes. Split the 9,000 years into just 30 chunks of 3 centuries, and you still have a large change over each 300 years.


Just because that found a plant that is 9,000 years old, doesn't meant that was when all plant life ended on the island. It might've happened just 3,000 years ago.
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Old 25-06-2021, 21:33   #37
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Re: Climate Change - sea level rises.

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Originally Posted by Hugh View Post
"The climate change crowd"?
He probably means those clever enlightened chaps that jet off halfway around the world just to remind people not to leave their TV on standby overnight.
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Old 25-06-2021, 21:39   #38
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Re: Climate Change - sea level rises.

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Originally Posted by GrimUpNorth View Post
Just have a read up on the impacts of fresh water in the North Atlantic and it'll tell you everything you need to know. I'm surprised you didn't give us any links or quotes
The Devon Island thing was in a TV documentary episode of "Arctic Secrets".
How have past predictions of sea level changes gone? Any of them remotely correct?
"Thermal expansion" is where sea levels rise because of warming of the seas cause the water to expand. If the seas cool down, that thermal expansion will obviously reverse.
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Old 26-06-2021, 10:25   #39
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Re: Climate Change - sea level rises.

Quote:
Originally Posted by GrimUpNorth View Post
Except when we melt enough of the polar ice and the fresh water disrupts the North Atlantic Conveyor, the corresponding changes to the Gulf Stream could well result in our climate becoming colder which would pretty much screw up your plans!
No need to be too concerned about the warming, then! We'll have to start burning more fossil fuels to warm the planet up again...

---------- Post added at 10:25 ---------- Previous post was at 10:23 ----------

Quote:
Originally Posted by nomadking View Post
The Devon Island thing was in a TV documentary episode of "Arctic Secrets".
How have past predictions of sea level changes gone? Any of them remotely correct?
"Thermal expansion" is where sea levels rise because of warming of the seas cause the water to expand. If the seas cool down, that thermal expansion will obviously reverse.
The Maldives were meant to be under water by now, weren't they?
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Old 26-06-2021, 10:55   #40
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Re: Climate Change - sea level rises.

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Originally Posted by OLD BOY View Post
No need to be too concerned about the warming, then! We'll have to start burning more fossil fuels to warm the planet up again...

---------- Post added at 10:25 ---------- Previous post was at 10:23 ----------



The Maldives were meant to be under water by now, weren't they?
I don't think that you can use the Maldives to try to back up some peoples dismissal of rising sea levels.

They have always been under threat.

There's is very comprehensive 2021 article by The Earth Observatory (nasa can hardly be described as Climate crisis idiots) and you will see what is happening in the Maldives to try to ensure their survival.
Quote:
snippet ..With more than 80 percent of its 1,190 coral islands standing less than 1 meter above sea level, the Maldives has the lowest terrain of any country in the world. This makes the archipelago in the Indian Ocean particularly vulnerable to sea level rise.
Quote:
snippet ...While the Maldives government has explored plans to purchase land on higher ground in other countries as an insurance policy against sea level rise, planners are also working to enhance the resilience of the country’s current islands. One example is Hulhumalé, a newly constructed artificial island northeast of the capital, Malé.
https://earthobservatory.nasa.gov/im...n-the-maldives
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Old 09-08-2021, 19:51   #41
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Re: Climate Change - sea level rises.

Today's news has confirmed that we are now seeing the effects of our past actions on the planet:

https://www.bbc.co.uk/news/live/scie...nment-58142632

I am surprised that it has started happening so quickly though.
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Old 09-08-2021, 20:21   #42
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Re: Climate Change - sea level rises.

Glaciers have been melting for thousands of years, not just the last few hundred.
Link

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To observe a Holocene environment, simply look around you! The Holocene is the name given to the last 11,700 years* of the Earth's history — the time since the end of the last major glacial epoch, or "ice age." Since then, there have been small-scale climate shifts — notably the "Little Ice Age" between about 1200 and 1700 A.D. — but in general, the Holocene has been a relatively warm period in between ice ages.
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Old 09-08-2021, 20:32   #43
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Re: Climate Change - sea level rises.

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Originally Posted by nomadking View Post
Glaciers have been melting for thousands of years, not just the last few hundred.
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It’s the rapidity of the change, not the change itself, that is the issue.
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Old 09-08-2021, 20:33   #44
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Re: Climate Change - sea level rises.

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Originally Posted by RichardCoulter View Post
Today's news has confirmed that we are now seeing the effects of our past actions on the planet:

https://www.bbc.co.uk/news/live/scie...nment-58142632

I am surprised that it has started happening so quickly though.
Lorry driver shortage, mate.
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Old 09-08-2021, 20:54   #45
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Re: Climate Change - sea level rises.

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Quote:
Recent changes to Lake Hazen, the world’s largest high-Arctic lake, are from increased heat flow from the area’s known geological features, and not from global warming as per the many alarmist media reports.
vidence supporting this is abundant and reliable.Northeast Canada’s Lake Hazen lies adjacent to the world-class Greenland/Iceland mantle plume (Figure 2).
Mantle plumes are narrow streams of deep inner earth sourced hot rock that spread like a ‘mushroom’ cap beneath the Earth’s surface.
They act to significantly warm overlying rocks, warm and chemically alter overlying oceans, and melt overlying ice masses.
Research by the University of Kansas has confirmed the results of three previous studies all indicating that geothermal heat flow from the Greenland/Iceland mantle plume is the dominant and likely sole cause of anomalous Greenland ice sheet melting. (see here, here, here, and here).
The ground-warming and ice-melting power of this geological feature are estimated to cover 720,000 square miles extending from the northern edge of Ellesmere Island to the eastern shore of Iceland.
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Quote:
Other subglacial lakes in Greenland and Antarctica contain fresh water, generated by melting at the base of the ice. Geothermal heat rises from the underlying rock, and is insulated by the thick ice sheet above.


The Canadian ice sheet is not thick enough to provide this insulation

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