Team finds subtropical waters flushing through Greenland fjord
February 14, 2010
Recent changes in ocean circulation in the North Atlantic are delivering larger amounts of subtropical waters to the high latitudes. A research team led by Fiamma Straneo, a physical oceanographer at Woods Hole Oceanographic Institution, found that subtropical waters are reaching Greenland's glaciers, driving melting and likely triggering an acceleration of ice loss. Melting ice also means more fresh water in the ocean, which could flood into the North Atlantic and disrupt a global system of currents, known as the Ocean Conveyor. (Jack Cook, Woods Hole Oceanographic Institution)
Waters from warmer latitudes -- or subtropical waters -- are reaching Greenland's glaciers, driving melting and likely triggering an acceleration of ice loss, reports a team of researchers led by Fiamma Straneo, a physical oceanographer from the Woods Hole Oceanographic Institution (WHOI).
"This is the first time we've seen waters this warm in any of the fjords in Greenland," says Straneo. "The subtropical waters are flowing through the fjord very quickly, so they can transport heat and drive melting at the end of the glacier."
Greenland's ice sheet, which is two-miles thick and covers an area about the size of Mexico, has lost mass at an accelerated rate over the last decade. The ice sheet's contribution to sea level rise during that time frame doubled due to increased melting and, to a greater extent, the widespread acceleration of outlet glaciers around Greenland.
While melting due to warming air temperatures is a known event, scientists are just beginning to learn more about the ocean's impact — in particular, the influence of currents — on the ice sheet.
"Among the mechanisms that we suspected might be triggering this acceleration are recent changes in ocean circulation in the North Atlantic, which are delivering larger amounts of subtropical waters to the high latitudes," says Straneo. But a lack of observations and measurements from Greenland's glaciers prior to the acceleration made it difficult to confirm.
The research team, which included colleagues from University of Maine, conducted two extensive surveys during July and September of 2008, collecting both ship-based and moored oceanographic data from Sermilik Fjord — a large glacial fjord in East Greenland.
Sermilik Fjord, which is 100 kilometers (approximately 62 miles) long, connects Helheim Glacier with the Irminger Sea. In 2003 alone, Helheim Glacier retreated several kilometers and almost doubled its flow speed.
Deep inside the Sermilik Fjord, researchers found subtropical water as warm as 39 degrees Fahrenheit (4 degrees Celsius). The team also reconstructed seasonal temperatures on the shelf using data collected by 19 hooded seals tagged with satellite-linked temperature depth-recorders. The data revealed that the shelf waters warm from July to December, and that subtropical waters are present on the shelf year round.
"This is the first extensive survey of one of these fjords that shows us how these warm waters circulate and how vigorous the circulation is," says Straneo. "Changes in the large-scale ocean circulation of the North Atlantic are propagating to the glaciers very quickly — not in a matter of years, but a matter of months. It's a very rapid communication."
Straneo adds that the study highlights how little is known about ocean-glacier interactions, which is a connection not currently included in climate models.
"We need more continuous observations to fully understand how they work, and to be able to better predict sea-level rise in the future," says Straneo.
Provided by Woods Hole Oceanographic Institution
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Feb 14, 2010
Rank: 3.1 / 5 (14)
BTW - when Greenland was last settled ca. 1200 yrs ago how much of the glacier coverage had melted and how high had the sea level risen at the peak of that melt??
Feb 14, 2010
Rank: 2.9 / 5 (14)
http://www.dailym...sed.html
Feb 14, 2010
Rank: 2.9 / 5 (14)
Also, the Daily Mail is probably not the best source for anything remotely scientific.
Feb 14, 2010
Rank: 3.1 / 5 (19)
Check the data. On the downside, however, various web sites have not as of yet corrected their quotations of the old 1998 data and information. It may be a while before they catch up.
Of course, that 1934 record is not conducive to conclusions regarding the anthropogenic nature claimed these days for global warming. So, the 1998 information is highly unlikely to meet revision any time soon.
Feb 14, 2010
Rank: 3.9 / 5 (15)
Feb 14, 2010
Rank: 3.5 / 5 (8)
Aww. You spoiled the fun.
Feb 15, 2010
Rank: 2.3 / 5 (16)
THERE has been no global warming for 15 years, a key scientist admitted yesterday in a major U-turn
http://www.dailye...w/158214
Feb 15, 2010
Rank: 3.5 / 5 (16)
Feb 15, 2010
Rank: 2.4 / 5 (17)
For the AGW believers, UFO researchers could use some of your help. Also Noble prize committee is looking to get back Al Gores Noble prize.
Feb 15, 2010
Rank: 2.8 / 5 (11)
Wrong. The Northwest passage was open, again, during this period so you'll have to say that the northern hemisphere was, at a minimum, affected.
Feb 15, 2010
Rank: 3 / 5 (14)
You mean that 1934 was only thought to apply only to the US. Various groups have been accused of smoothing out a so-called 'blip' from between 1920 and 1940, a signal that was felt over areas even beyond the US.
In fact, I recently read a paper only a very few years old that presented some relatively new data that shows it happened elsewhere, including in Greenland.
New data is coming in from all over, not all of which has as of yet been published. But, it also points to this missing 'blip' in the temperature signal.
I would not hold on to this idea that it only applied to the US too doggedly because it could well go the way of the IPCC glacial and other claims. What will you say then? :)
Feb 15, 2010
Rank: 3.5 / 5 (13)
http://docs.lib.n...589a.pdf
It would appear that the warming that led up to the 1934 warmest year also was affecting the Arctic, which, I should not need to mention, is outside the US, and that this was known in climate circles of the period.
One wonders why it is that things like this are not discussed as openly these days by most climate scientists.
Feb 15, 2010
Rank: 3.5 / 5 (16)
Interesting. No?
Feb 15, 2010
Rank: 3.5 / 5 (13)
Feb 15, 2010
Rank: 3 / 5 (12)
I would like to thank the NOAA Central Library Data Imaging Project for making this information available.
To search through other articles (somewhat incomplete as of yet, unfortunately, but still of interest) of the same publication, go here:
http://docs.lib.n...iew.html
Feb 15, 2010
Rank: 2.7 / 5 (14)
Err, there is a vibrant and thriving population on Greenland, approx 57,000!
False- the correction showed that the 48 continental US states (approx 2% of Earth's surface!) had their warmest year in 1934, not the global mean. I think you will find that 1934 is way down the list of global warmest years.
Feb 15, 2010
Rank: 2.1 / 5 (11)
For the moment on websites and other places that have not been updated, yes. See up a few posts. :)
Feb 15, 2010
Rank: 2.4 / 5 (11)
Feb 15, 2010
Rank: 2.6 / 5 (10)
What are you talking about? You exhibit all the signs of trollness by rampant sockpuppeteering.
As to what I said about references, see above as to where they are and will be. This is one case where patience is a wonderful virtue. CRU ssmoothed away a so-called 1934 'blip' and eventually that is about to be exposed similarly to how the glacier data was exposed and so forth. Patience and time will reveal all. :)
Feb 15, 2010
Rank: 1 / 5 (8)
Why don't you make up your own name and come out of hiding you little dirtbag
Feb 15, 2010
Rank: 2.4 / 5 (9)
http://p38assn.or...girl.htm
Feb 15, 2010
Rank: 3.7 / 5 (9)
why do you think ice has to melt from the top down?
Feb 15, 2010
Rank: 3.5 / 5 (8)
Reminds me of the Austin Powers movie when the one guard is yelling "Nooooo!" at the slowly oncoming steamroller.
I suspect that if coastal drowning should ever happen, people will be savvy enough to "get out of the way" by then.
Feb 16, 2010
Rank: 3.7 / 5 (7)
Good question with a number of mechanisms at work. You have conduction (the same way a coin placed on top of ice will appear to bore a hole in the ice), you have the weight of the aeroplane melting the ice (think how ice skater blades work), and you also have additional snow fall on top of this.
Feb 16, 2010
Rank: 4.2 / 5 (6)
Feb 16, 2010
Rank: 1.5 / 5 (8)
Feb 16, 2010
Rank: 2.8 / 5 (9)
I generally do not link to blogs. Are there any papers? Certainly. However, very, very few are available publically as of yet. In addition, there are others yet to come. In such a case, patience is a virtue.
Additionally, see several posts above where I quoted a November 1922 article in MWR which desribes "unheard-of" ice-free Arctic waters all the way up to 81 degrees N latitude and 29 E, as well as vanished glaciers, etc. Things were already getting warmer by that time all the way across the Arctic from the US.
In addition, never mind the Northwest Passage in 1934--the Northeast Passage was open. Should I find things publically available I'll link to them.
Feb 16, 2010
Rank: 2.9 / 5 (9)
Go ahead and give it a try. Read the snippets I quoted above or actually read the entire article and note the similarity of phraseology to what is being said about the Arctic and glaciers today. Again, I should not need to remind you that Spitsbergen is by no means part of or near the contiguous US. 1934 also has some very interesting reports from all over the Arctic.
I hope to be able to locate some of this material in publically available sources to which I can link for readers here.
Feb 16, 2010
Rank: 2.3 / 5 (9)
http://www.nypost...vafbIbGK
Can we all agree that AGW is a hoax so we can move onto real problems facing mankind?
Feb 16, 2010
Rank: 3.6 / 5 (9)
I've read the full transcript of Phil Jones' interview, did you? Do you understand it or do you just jump to conclusions because you want to?
Has there been significant warming over the last 15 years? No. The warming was 0.12 deg C positive since 1995. Was there significant cooling over the last 15 years? No, there was 0.12 deg C negative change in the global temperature over the last 15 years. (all of these are ONLY land based CRU measurements, btw).
Is this statistically significant given massive amounts of proxy data that show that the rate of warming over a global average was much higher than anything seen before? No.
Feb 16, 2010
Rank: 3.5 / 5 (10)
Chylek et al., 2006, "Greenland warming of 1920–1930 and 1995–2005"
http://www.agu.or...10.shtml
Snippets from the article itself can be found here if the reader is unable to purchase access to the full article:
http://meteo.lcd....ing.html
It is a curious thing to see that the years 1920-1930 warmed 50% more quickly than 1995-2005 in Greenland, making current warming there not so 'unprecedented.'
Feb 16, 2010
Rank: 3.1 / 5 (10)
IF it were an article by itself, I might be inclined to take it with a grain or two of salt. But, it is not. It is more a repeat of news articles I have seen elsewhere in other countries prior to publication in the US.
I am pleased that Professor Jones has gone on record as stating that the present warming has not been statistically significant. That is indeed what the full, unvarnished raw data evidence shows before being smoothed by CRU and others.
I also feel for him. What he described of his office and vast array of papers and other items pretty well matches the description of my office! I certainly can see how he lost the data he lost. I have found I have done similar things so I cannot really judge him too harshly.
Reminds me I have a New Year's resolution to clean up the old office to keep. :)
Feb 16, 2010
Rank: 2.5 / 5 (6)
The length of time is what is insignificant. But you can keep trying to make it seem significant enough to kill the science of global warming, but denialists frustration when this makes no difference will be very satisfying.
Feb 16, 2010
Rank: 2.4 / 5 (7)
Feb 16, 2010
Rank: 2.5 / 5 (8)
Actual scientific acknowledgement from the experts, not from a bunch of amateurs that think the free-market is a gift from a beneficial god.
Feb 16, 2010
Rank: 3 / 5 (9)
2) Find a source for the global warming trend (~0.2 deg C per decade) that has occurred since the beginning of the industrial age and that the causes of the previous warming are also responsible for the current decade long plateau.
For those that want the source of Prof. Phil Jones' interview without the right-wing blather:
http://news.bbc.c...1670.stm
Feb 16, 2010
Rank: 3.1 / 5 (8)
All of us agree the world temp has not risen the last 15 years. Since the temp has not risen, CO2 cant be the cause of AGW, because CO2 levels have risen, but there hasnt been any increase in temperatures.
You believe in AGW because I cant prove that CO2 wont raise temperatures, even though temps havent risen while CO2 levels have increased.
I can quit trying to convince you that there is no AGW because your religion wont allow you to think anything different than there is AGW. Lying scientists, fraud, bad models, scientific proof that your position is false wont convince you.
Feb 16, 2010
Rank: 4.1 / 5 (9)
Feb 16, 2010
Rank: 3.9 / 5 (7)
There should have been a pronounced and statistically significant drop in global temperatures. There wasn't and the last few months have been noteworthy for their record breaking warmth.
Feb 16, 2010
Rank: 4.2 / 5 (5)
Compare to February 1998- http://www.osdpd....1998.gif
The UAH temperatures are here: http://vortex.nss...hmam_5.2
Feb 16, 2010
Rank: 2.8 / 5 (8)
Based on the horrible science did the temp raise between .5 and .7? Thats open to debate. We've been told for years that temps are going up, but only in the last year or two have scientist admitted that temps have not gone up the last 15 years. If they cant get the last 15 years straight, my assumption is that there might not even have been a rise outside of normal fluctuations before.
However IF the temp did rise, is it outside of normal fluctuation? Based on all the evidence it is within normal range.
Feb 16, 2010
Rank: 3.7 / 5 (11)
JayK, sorry to go back a good amount of posts on this subject but you stated the above, and then posted the transcript.
Mr. Jones seems quite certain about his 1995 statement.
Feb 16, 2010
Rank: 3 / 5 (8)
Never mind, I tried to engage you, that was my mistake. You can believe you have some sort of "science" and that all of these nitpicking little issues somehow debunks the broader science of climate change, but the fact is that you have no facts, you have nothing other than emotional feelings that say that global warming hasn't and isn't happening, so you'll stick your fingers in your ears and sing.
I hope it's a good song, cuz you'll be humming it for a long long time. The science isn't going away, articles and journals will still have an abundance of entries that show global warming and its effects, while the number of entries that show the science is wrong will be limited to blogs that say that snowfall is an indication that global warming is false.
Feb 16, 2010
Rank: 4.1 / 5 (9)
Yes, you caught me. I went back and read through his statements again, and he qualifies his claim as 1995-2010 shows a statistically negligible amount of warming at .12 deg C, while when you shorten the sample period to 2002-2010 you can show another statistically insignificant .12 deg C cooling.
The way that the Daily Fail wrote it was misleading and the only way to get the full understanding of his quote was to read the full transcript.
Feb 16, 2010
Rank: 3.6 / 5 (8)
Feb 16, 2010
Rank: 3.4 / 5 (8)
I actually think the BBC did a pretty horrible job of question selection. They seemed use questions that would badger Jones. The media failure only started there and has continued. Jones was ill advised to do that interview at all.
Feb 16, 2010
Rank: 3.2 / 5 (5)
You'd think the one thing we'd all want is more neutral data.
Feb 16, 2010
Rank: 3.9 / 5 (7)
Feb 16, 2010
Rank: 4.6 / 5 (7)
Typically researchers will publish their collection methods, especially in an immature field, so that other can determine standards and improve methodology. There are a fair many journals designed specifically around observation methodology and equipment calibration technique.
And yes, they are very boring.
Feb 16, 2010
Rank: 3.7 / 5 (6)
Observational technology and equipment calibration technique articles also have hypothesis and conclusions.
For another researcher to get the data and methodologies the authors will provide full documentation upon a justifiable request.
Feb 16, 2010
Rank: 2.6 / 5 (9)
But, we still have not reached the temps of the MWP, RWP, or of the periods before that.
Feb 16, 2010
Rank: 3.5 / 5 (6)
A lot of scientists are playing team sports. "If you're not on my team's side, I'm not sharing my research."
Or my description is lacking.
All of the papers have hypotheses and are primarily in regards to how to properly model and observe chaotic systems. Data normalization (smoothing) and so forth.
Feb 16, 2010
Rank: 3 / 5 (7)
Relating to the subtropical waters mentioned above, this is not the first time that this has been seen, except perhaps in this specific area.
A similar phenomenon was noted in 1922 in another area of the Arctic closer to Europe.
Feb 16, 2010
Rank: 3.7 / 5 (6)
The journals I work from appear to be busier than normal with acceptance rates actually increasing, if anything. Of course, that's just a personal observation. I would imagine that the controversy surrounding climate science journals might make the review process much more difficult and finding peers to do the review itself might be nigh impossible. I'd imagine no one wants to touch peer-review in climate science with a 10 foot insulated pole right now. It is climate-science journals where they are trying to publish, right?
Feb 16, 2010
Rank: 3.9 / 5 (7)
Feb 16, 2010
Rank: 2.6 / 5 (8)
Feb 16, 2010
Rank: 3.7 / 5 (6)
"Greenland ice loss driven by warming seas: study"
And the opening paragraph was
"Arctic Ocean off the coast of Greenland. Greenland's continent-sized icesheet is being significantly eroded by winds and currents that drive warmer water into fjords, where it carves out the base of coastal glaciers, according to studies released Sunday"
That article is now gone completely, replaced by this one.
Feb 16, 2010
Rank: 3 / 5 (8)
Excellent! I am pleased that this tacit admission was made regarding the fact that the models are deficient and need improvement. Perhaps with more articles like this one we may well see more of a drive to improve before explicit reliance on them.
Feb 16, 2010
Rank: 3.7 / 5 (9)
Every time the sun goes down I become a sunrise denialist.
Feb 16, 2010
Rank: 3.1 / 5 (8)
The globe has warmed but that warming has been "statistically insignificant," to quote climate scientist, Dr. Phil Jones. If the AGW crowd had been right it should have warmed much more significantly than it has.
Feb 17, 2010
Rank: 2.6 / 5 (5)
Nope, for the most part it's metrology, (not meteorology but the study of measurement and precision).
From the "New" Article:
The Ocean Conveyor was disproved recently. No such construct exists.
Feb 17, 2010
Rank: 3.5 / 5 (6)
Feb 17, 2010
Rank: 3.9 / 5 (8)
I'm not disputing the known surface and subsurface currents, however, the THC has been shown to be a false model, there was an article on here a month or two ago stating that the newer oceanic floor sensors did not find the predicted Cold water conveyor.
http://www.physor...846.html
Feb 17, 2010
Rank: 3.9 / 5 (7)
As for the THC being a false model? I'd beware making such a black and white statement. It isn't as simple as was believed, and may not account for the majority of European warmth, as was believed, but it still exists, the oceanographers are just trying to fully understand it with the recent revelations.
The theories of a rapid drop of salinity of the northern Atlantic are still valid, as they have some pretty good data that indicates previous shutdowns (geologic time frame) were due to rapid desalinization when fresh waters flooded the Atlantic.
Feb 17, 2010
Rank: 2.9 / 5 (9)
The rapid desalinization was caused by rapidly occurring catastrophic events. (Think 'Lake Agassiz' for example). There is nothing in place at the moment that could cause such a catastrophic event again in the near future, not even GIS melting.
Feb 17, 2010
Rank: 2.8 / 5 (9)
Is that the beginning of the industrial age that
coinsides with the end of the Little Ice Age? Gee, temeratures going up after a cold spell, time for panic.
Feb 17, 2010
Rank: 3 / 5 (8)
Let me know when you'll be publishing that amazing find that you made, I'm sure every journal will be clamoring to be the first to publish it.
Feb 17, 2010
Rank: 3 / 5 (10)
And it's amazing to me how many arrogant idiots fail to see plain facts.
Feb 17, 2010
Rank: 3 / 5 (6)
Any “action” to be taken by a government must now first be sold to the people (or not, if not a democracy). People respond to themes and ideas, not published ephemera in climate journals. The big idea/theme that CS pointed out (and it is a reasonable theme IMHO): is there really a problem that needs solving? Most folks do not see our climate as seriously defective and those who do look at numbers are not shocked especially after hearing the phrase “normal variation”. If climate enthusiasts want to counter big ideas/themes with snooty comments, they do so at the peril of their cause.
Feb 17, 2010
Rank: 3.4 / 5 (9)
The open question is, is man really responsible for any of it today? The jury remains out on that matter. Anyone who says otherwise is trying to sell something.
Feb 19, 2010
Rank: 5 / 5 (2)
It's 34ft above sea level so no problems at all.
Of course, not all the roads leading to the house and town are so high, but that's someone elses problem and couldn't possibly affect me, now could it?
Feb 20, 2010
Rank: 3.7 / 5 (6)
Feb 21, 2010
Rank: not rated yet
Feb 21, 2010
Rank: not rated yet
http://www.gwynne...s/Gwynne Dyer article_ The Northern Passages.txt
Feb 21, 2010
Rank: 2.3 / 5 (3)
By the way, you are wrong. The first recorded captain to navigate the Northwest Passage from Greenland to Alaska successfully was Roald Amundsen, in 1906 (if I recall correctly).
Feb 21, 2010
Rank: 2.3 / 5 (3)
Feb 21, 2010
Rank: 3 / 5 (4)
Nonetheless, I dispute the article which you cite. Take a close look at the Arctic ice data. The Northeast Passage is not really actually 'open,' per se, but icebreakers still are used to traverse this passage at least part of the way.
Oh, and when you do check the ice data, make sure you check the corrected data. The sensor on the satellite malfunctioned and showed much less ice than there really was present at the time.
Feb 22, 2010
Rank: 2.3 / 5 (3)
Feb 22, 2010
Rank: 1 / 5 (1)
Feb 22, 2010
Rank: 1 / 5 (1)
And now he wants anyone that says AGW is an occurring phenomenon to stop posting here. Isn't that sweet?
Feb 22, 2010
Rank: not rated yet
Hardly. That is the job of Al Gore and the IPCC. :)
Feb 22, 2010
Rank: 1 / 5 (1)
In fact, I believe that the earth was much warmer in the ancient past and that there are alternating glacial and warming periods. I also believe that it is possible for temperatures to go up. In fact, in a billion years from now (some say as little as a million) the Sun will ramp up its fusion and begin evaporating the oceans into space. Climate change is unavoidable. It has happened over millions of years and will continue to do so.
Give me strong, incontrovertable evidence that man is responsible and I will look it over and make a decision. For now, I remain a skeptic. And, after what I have come across and seen with my own eyes it is likely I will remain a skeptic for some time.