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Posted on 09/03/2009 5:15:51 PM PDT by nickcarraway
Arctic temperatures are now higher than at any time in the last 2,000 years, research reveals.
Changes to the Earth's orbit drove centuries of cooling, but temperatures rose fast in the last 100 years as human greenhouse gas emissions rose.
Scientists took evidence from ice cores, tree rings and lake sediments.
Writing in the journal Science, they say this confirms that the Arctic is very sensitive both to changes in solar heating and to greenhouse warming.
The 23 sites sampled were good enough to provide a decade-by-decade picture of temperatures across the region.
The result is a "hockey stick"-like curve in which the last decade - 1998-2008 - stands out as the warmest in the entire series.
"The most pervasive signal in the reconstruction, the most prominent trend, is the overall cooling that took place for the first 1,900 years [of the record]," said study leader Darrell Kaufman from Northern Arizona University in Flagstaff, US.
"The 20th Century stands out in strong contrast to the cooling that should have continued. The last half-century was the warmest of the 2,000-year temperature record, and the last 10 years have been especially dramatic," he told BBC News.
On average, the region cooled at a rate of 0.2C per millennium until about 1900. Since then, it has warmed by about 1.2C.
Much debate on climate change has centred on the Mediaeval Warm Period, or Mediaeval Climate Anomaly - a period about 1,000 years ago when, historical records suggest, Vikings colonised Greenland and may have grown grapes in Newfoundland.
The new analysis shows that temperatures were indeed warmer in this region 1,000 years ago than they were 100 years ago - but not as warm as they are now, or 1,000 years previously.
(Excerpt) Read more at news.bbc.co.uk ...
Because 2,000 years ago we had SUVs running around the planet and big scary factories.
The use of tree rings completely invalidates the study. The technique has been shown to be fatally flawed. No further analysis or argument necessary.
(Besides that... I bet when Marco Polo in 1290 was able to sail through the Bering Strait all the way past Hudson Bay in the Arctic there is some minor reason to believe that it was warmer then... Oh, but these people don’t believe in the Medieval Warm Period in Europe despite the wine grapes being grown in Ireland at the time...)
Now, about the "researcher", if you read the news report closely you will observe that he has rejected the Sun as a source of heat.
The man is certifiably mad.
I remember seeing 5000 Greenland Vikings growing crops and tending to sheep and sneaking off to America to pillage the Iroquois just last week.
It’s been so warm.
Baltimore Maryland, August 31
58 degrees
Funny they can pinpoint the exact temperatures in the region for every year for the last 2,000 years and can declare with absolute certainty that at no point in the past 2,000 years was there a maximum above the current temperatures, and that they can do so to a tenth of a degree.
I smell Hocus Pocus, or something closely approximating magic but definitely derived from a pile of manure.
Oh. I wasn’t aware that they were taking temperature readings 2000 years ago. Or 200 for that matter - in the arctic...
More BS
Quick - where’s that “Oh no, not that $hit again?”?
These environmentalist whack jobs are total Bozos.
I can see being advocates of not polluting the water table we drink from, but the rest is pretty much BS.
Also note that the Antarctica ice growth this winter in the southern hemisphere is higher than last year and higher than the average of 1979-2000.
If it’s shaped like a hockey stick, there are two forces at work:1) the answer is known and you have to work backwards to the basic data; and 2)you really have no clue to what’s happening and so you make this up as you go along.
In Marco Polo’s “Book of Travels” he states that he traveled north (by compass) until he reached a place where the Pole Star appeared in the south (by compass).
The Pole star actually IS over the North Pole (within a degree or so). Take a look at a map that has North Pole and Magnetic North Pole depicted... and see how it is possible that his statement is true, instead of baffling, as it was to him.
Then why is there (a lot) more ice in the Arctic now than there was 2 years ago?
Then why is there (a lot) more ice in the Arctic now than there was 2 years ago?
When I was doing science we always had to include some kind of error analysis. The precision of any average number in a study cannot be lower than the precision of the numbers being averaged. Are they implying that lake sediments, tree rings and ice cores can reveal temperatures to an accuracy of 1/10 of a degree C?
In other words, they have no clue.
Magnetic North is located in North Central Canada. If you were in Manchuria your compass would point to Canada and the Pole Star would be on your Left, to Magnetic South.
What was the Arctic temp 1238 years ago, anyone?
Just reading about the four active volcanoes in Antarctica. Three of them are in West Antarctica where the Leftwingtard econuts claim the "ice is melting".
Yup, shur nuff', put a glacier on top an active volcano and you'll get some melt water.
Silly people, everybody knows that all life on earth was wiped out over 180 yrs ago because wars in Europe, cutting trees down, tobacco use, and emiting CO2.
“The speculation is that China did send ships to the Arctic Ocean”
Imagine for a sec, if the Chinese had established settlements along the West Coast of the US in the 13th century we might all be speaking Mandarin
You’d be speaking Cantonese. I’d be speaking Mandarin.
Shanghainaise is spoken generally in New York, and Cantonese (also a form of Nam) is spoken in San Fran.
However, because the Chinese didn't tell anybody if they'd discovered America, nor could your typical seacaptain outfit and man the size boats needed to cross the Pacific in those days, North America ended up settled by Europeans (because the trip was shorter, cheaper, and somebody broadcast the news).
Like to add, if the Chinese had found and settled North America, Mandarin would have been relegated to a quaint relic of a past age.
Dumb assholes. If this were true we would be seeing the mainland of Greenland alive with the green shoots of a great thaw, and developing a whole new way of life as it did during the real Medieval warming.
They ended up burning their fleets and outlawing ocean-going vessels.
This chart was created using the same technique but red noise inputs (random data)
Both are explained in this thread: http://www.climateaudit.org/?p=6932
Note that there is a rise, but the temperatures were warmer in the 1930's. Also there are anecdotal reports of less ice (no satellite measurements of course). Obviously as people have pointed out temperatures were warmer in the MWP as well.
Basics:
The Sun,
The sunspot count,
The orbit of the earth,
The earth axis,
The exchange of heat and cold via the exchange of air and ocean currents between the Polar Regions and the Equator,
And
Our atmosphere slowing the impact of the variables.
What we see today is a lag time of 5 to 14 years behind the variables.
The last sunspot cycle was the last peak cycle.
We are now in a minimum cycle and the come in pairs per Joseph D’Aleo.
In short time this will all change.
They probably tested over volcanic vents.
Try again.
He traveled by boat to a place where the south end of the compass was pointing to the Pole Star.
Knowing that Magnetic North is located somewhere East of Hudson Bay in Canada is a good start. Where, then, would have had to be for the Pole Star to be in the (magnetic) south?
So where was the North Magnetic Pole located in the 1300s?
It may have moved faster or slower than at present.
BTW, that Polo Map is clearly a segment of the Piri Ris map showing Puerto Rico (displaced 90 degrees due to the particular sailing rose used to lay out that map (See Hapgood - Maps of the Ancient Sea Kings). That turns Kamchatka into Nova Scotia, Alaska into Greenland, and the rest of it to the right into Europe.
Recall that Polo recounted his adventures as a POW. Plus, although he'd been in the Far East he had not been EVERYWHERE in the Far East so some of his references are "strange".
All of which leads us to wonder where the Chinese got maps of North America ~ one hypothesis is they did some serious global surveying before the climactic disaster that brought about what we call the Greek Dark Age ~ that is, before 1200 BC/BCE. They had the technological capability of building large ships capable of the long voyages needed at that time ~ plus, cocaine was found in the body of Ramses II, whose life fits that timeframe (Rameses II 1279 - 1213 BC ), and if we can have the Chinese sailing around and mapping the Americas we can certainly have them sailing up the Mediterranean to trade blow with the Egyptians ~ right on schedule!
Enjoying the banter.
It took me a while to figure out what “Piri Ris” is, and find it. I see that the suggestion you make of Map with Ship having a (very small) segment in common with Piri Ris would suggest a rotation and then Greenland and Europe. However, the lack of the large Islands of Iceland and British Isles seems rather noticeable. The lack of a lot of clear water between Iceland and Europe is also rather a problem. Nevertheless, I understand your thought.
I’ve not ever seen suggestions that the Chinese may have sailed the Atlantic. I have seen thoughts that they did get to a good portion of the West Coast of the Americas.
As far as to Egypt: clear-ocean going vessels would not be needed to be the drug pusher for Rameses - simple coast vessels would get them easily to the much more accessible Red Sea... as would simple overland trading.
As long as bias is presented as fact - the 'scientists' are nothing but political hacks.
How is ‘zero’ determined on charts like this?
There is about a +-1 degree C variation;
but from what ‘norm’ is it based on?
“We have to get rid of the Medieval Warm Period.”
Looks like that chart uses the average over the interval for zero. Most weather forecasters use a 30 year interval to determine “average”, so when you hear that today is above or below average it probably means it is above or below the 1960-1990 or 1970-2000 average. But that chart looks like they use the whole range for average, then set that to zero to plot deviation from average.
The arctic volcanoes don't put out enough energy to warm the water appreciably. More warming comes from incoming currents and much more warming comes from the annual freeze (freezing water releases heat).
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