- Joined
- Dec 22, 2012
- Messages
- 66,698
- Reaction score
- 22,241
- Location
- Portlandia
- Gender
- Male
- Political Leaning
- Libertarian - Right
What do we know about Arctic sea ice trends?
[FONT=&]Posted on August 16, 2017 | 25 comments[/FONT]
by Dr. Ronan Connolly & Dr. Michael Connolly
Satellite observations indicate that the average Arctic sea ice extent has generally decreased since the start of the satellite records in October 1978. Is this period long enough to assess whether the current sea level trend is unusual, and to what extent the decline is caused by humans?
Continue reading →
Summary
- After re-calibrating the pre-satellite data, it now transpires that Arctic sea ice has alternated between periods of sea ice retreat and growth. The satellite record coincidentally began at the end of one of the sea ice growth periods. This has led to people mistakenly thinking the post-1978 sea ice retreat is unusual.
- The results from new sea ice proxies taken from ocean sediment cores suggest that Arctic sea ice extent has varied substantially over the last 10,000 years. They also suggest that Arctic sea ice extent was actually less before the Bronze Age than it is today.
- The current Global Climate Models are unable to reproduce the observed Arctic sea ice changes since 1901, and they seem to drastically underestimate the natural sea ice variability
[h=2]Antarctica – 91 volcanoes coincidentally found under glaciers warming “due to climate change”[/h]
It’s possibly the densest concentration of volcanoes in the world, some as high as 4km and we didn’t even know these existed til recently. Despite that overwhelming ignorance, we’re 97.00% certain that all the warming in Antarctica is due to your car and airconditioner. Robin McKie, The Guardian writer, talks about the recent discovery of so many volcanoes under the ice. Not surprisingly, we have no data on how active these volcanoes are. However because we *know* climate change is definitely wrecking Antarctica, it follows that your car, air conditioner and pet dog could melt more ice, take the pressure off the tectonic plate and set one off. Then things will really get out of hand.
Anyhow, it’s just a coincidence that all the warming in Antarctica is where the volcanoes are.
Spread the hagtag #allvolcanosmatter.
[h=3]From The Guardian: Scientists discover 91 volcanoes below Antarctic ice sheet[/h]Scientists have uncovered the largest volcanic region on Earth – two kilometres below the surface of the vast ice sheet that covers west Antarctica.
The project, by Edinburgh University researchers, has revealed almost 100 volcanoes – with the highest as tall as the Eiger, which stands at almost 4,000 metres in Switzerland.
Geologists say this huge region is likely to dwarf that of east Africa’s volcanic ridge, currently rated the densest concentration of volcanoes in the world.
These newly discovered volcanoes range in height from 100 to 3,850 metres. All are covered in ice, which sometimes lies in layers that are more than 4km thick in the region. These active peaks are concentrated in a region known as the west Antarctic rift system, which stretches 3,500km from Antarctica’s Ross ice shelf to the Antarctic peninsula.
Who’s responsible for lava?
(Regulate now!)
[h=2]Antarctica – 91 volcanoes coincidentally found under glaciers warming “due to climate change”[/h]
It’s possibly the densest concentration of volcanoes in the world, some as high as 4km and we didn’t even know these existed til recently. Despite that overwhelming ignorance, we’re 97.00% certain that all the warming in Antarctica is due to your car and airconditioner. Robin McKie, The Guardian writer, talks about the recent discovery of so many volcanoes under the ice. Not surprisingly, we have no data on how active these volcanoes are. However because we *know* climate change is definitely wrecking Antarctica, it follows that your car, air conditioner and pet dog could melt more ice, take the pressure off the tectonic plate and set one off. Then things will really get out of hand.
Anyhow, it’s just a coincidence that all the warming in Antarctica is where the volcanoes are.
Spread the hagtag #allvolcanosmatter.
[h=3]From The Guardian: Scientists discover 91 volcanoes below Antarctic ice sheet[/h]Scientists have uncovered the largest volcanic region on Earth – two kilometres below the surface of the vast ice sheet that covers west Antarctica.
The project, by Edinburgh University researchers, has revealed almost 100 volcanoes – with the highest as tall as the Eiger, which stands at almost 4,000 metres in Switzerland.
Geologists say this huge region is likely to dwarf that of east Africa’s volcanic ridge, currently rated the densest concentration of volcanoes in the world.
These newly discovered volcanoes range in height from 100 to 3,850 metres. All are covered in ice, which sometimes lies in layers that are more than 4km thick in the region. These active peaks are concentrated in a region known as the west Antarctic rift system, which stretches 3,500km from Antarctica’s Ross ice shelf to the Antarctic peninsula.
Who’s responsible for lava?
(Regulate now!)
A friend and former colleague is doing work in Russia right now about the permafrost, which has begun to melt more drastically in the past three years. The greenland and polar ice sheet diminishment are well known, but not enough attention is being brought to the permafrost. If the permafrost melts even by 25% we are totally screwed because of the levels of methane that will be released.
Methane?? Those folks who claim climate change is bogus, say that supporters or zealot's as they characterize proponents of climate, say that proponents of the science only site one cause. co2. But here's methane. More potent of a greenhouse has than co2.
The idea that mostly-dormant volcanoes are appreciably heating an entire continent is hilarious.
Methane?? Those folks who claim climate change is bogus, say that supporters or zealot's as they characterize proponents of climate, say that proponents of the science only site one cause. co2. But here's methane. More potent of a greenhouse has than co2.
And you know they are "mostly dormant" how?
[h=1]Volcano discovered smoldering under a kilometer of ice in West Antarctica[/h]From the Washington University in St. Louis Its heat may increase the rate of ice loss from one of the continent’s major ice streams It wasn’t what they were looking for but that only made the discovery all the more exciting. In January 2010 a team of scientists had set up two crossing lines of…
November 17, 2013 in Volcanoes.
Because highly active volcanoes are, uh, rather loud.
The idea that mostly-dormant volcanoes are appreciably heating an entire continent is hilarious.
First off, most of these alarmists simply don't believe in GOD ---- much less, that there was once a terrible Flood and an ark built by Noah with his family. They don't even wish to imagine that this Flood was likely some 5000 years ago (perhaps even more recent).
I certainly believe that we shouldn't waste things and spoil the environment, but if unborn babies can be thrown away and people continue to pollute their own bodies through, smoking, excessive drinking, tattoos, drugs, sexual abuse, etc. without any regard for the CREATOR of this environment --------------- what makes anyone imagine that these same folks are up to saving a planet.
Do all us skeptics a favour and stay off our side
I think he's on the correct side- the side of illogical fantasy and distrust and misunderstanding of science.
He's a bit more self aware than some of you guys, tho.
Do all us skeptics a favour and stay off our side
Fake News. The Earth is flat: it doesn't have any poles!
Real sea level rise: a lost continent called Zealandia submerged]File this under Nasty Nature. This is the sort of thing planet Earth throws at life.
The is real “sea level rise” — where most of a continent (called Zealandia) sinks under the waves — and — as far as we know, though I could be wrong — fossil fuel use was minimal circa 50 -80 million years ago. Can Exxon be blamed?
Looks like someone is confused by the concept that effects may have multiple causes.
[h=2]Real sea level rise: a lost continent called Zealandia submerged[/h]
File this under Nasty Nature. This is the sort of thing planet Earth throws at life.
The is real “sea level rise” — where most of a continent (called Zealandia) sinks under the waves — and — as far as we know, though I could be wrong — fossil fuel use was minimal circa 50 -80 million years ago. Can Exxon be blamed?
New Zealanders may be feeling a bit cheesed that they carelessly lost something like 80% of their land. (Call that “Old Zealand” which was once as big as India.) Given that it is one kilometer underwater, it looks like it isn’t coming back soon. But think of all the national parks, reefs, etc that were destroyed?
The story is that the Pacific Rim of Fire “buckled” 40-50 million years ago, and Zealandia sunk a lot deeper. There is a suggestion that it was originally submerged about 80 million years ago (or so), when this renegade land split from Australia and Antarctica.
Since 1,000 tide gauges estimate current sea level rise at around 1 mm a year, real climate change puts the current panic about sea levels into perspective. Even the next ice age, with a 125m sea level drop, is not going to uncover all this lost real-estate.
Keep reading →
Given that sort of capacity for upward and downward movement of the sea floor, to what degree is the possibility that any sea level changes are due to relatively slight changes in the altitude of parts of the sea floor.
I put out there the idea that since we are over due an earthquake storm the pressure of the driving component of the tectonic system, the mid ocean ridge, will be increasing resulting in it getting higher as the height of it is a function of the lateral force exerted on it by the resistance of the ocean floor/continents to it's push.
Just how accurate are our maps of the ocean floor?
The US Navy's maps of the ocean floor are extremely accurate.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?