Excellent animation by Leo Murray explaining climate system feedbacks and the potential for us to pass “tipping points” that could make our efforts to reduce emissions completely redundant. More information (including script and references) at wakeupfreakout.org. Hat-tip to Peter “Crock of the Week” Sinclair for finding it…
Tag: methane
The gas almost works (more methane)
Atmospheric methane levels continued to increase in 2009, the World Meteorological Organisation’s annual Greenhouse Gas Bulletin (summary PDF) confirmed this week. Methane averaged 1803 ppb over the year, up 5 ppb on 2008, and now contributes 18.1% of the radiative forcing caused by current greenhouse gas levels. The Bulletin suggests that “likely causes were above average wetland methane emissions due to exceptionally warm temperatures at high northern latitudes in 2007 and heavy precipitation in tropical wetlands in 2007 and 2008. However, it cautions that the reasons for the recent increases are not yet fully understood.”
A hint that the rise might be continuing this year is contained in this rather striking graph of methane levels recorded recently at the Mt Zeppelin recording station (a misty mountain?) in Ny Ã…lesund, Svalbard…
Buffoons in arms: Goddard joins Monckton at SPPI
Oh frabjous day! Steven Goddard is joining “potty peer” Christopher, Viscount Monckton of Brenchley as one of the slithy toves contributing to the Science and Public Policy Institute‘s never-ending stream of climate denier propaganda, and on the evidence of his first “paper” he will be a valuable* addition to the team. The SPPI pantheon is in dire need of a fillip, given Monckton’s lacklustre recent performance (of which more later), and so Goddard is given his head to produce a truly wondrous counterblast to the recent NOAA 2010 Arctic Report Card — To a geologist, “the past is key to the future”. To give you a flavour of his wisdom, here are Goddard’s conclusions:
- The widespread belief that the poles are rapidly melting down is incorrect, particularly in the Southern Hemisphere.
- Arctic temperatures are cyclical. Much of the Arctic has been warmer during the last 100 years.
- The satellite record from 1979-2010 coincided with the warm phase of the PDO. It covers less than one half of an Arctic temperature cycle. Given this cyclical behavior, it makes little scientific sense to extrapolate linearly based on a time period which is too short. Until satellites record at least one entire Arctic cycle, the extrapolations are misleading.
- There is little (if any) evidence linking recent changes in the Arctic to CO2. At this point there is no solid reason to believe we are seeing anything other than natural Arctic cycles. Greenland temperatures are cooler than 70 years ago.
Great stuff. Either completely wrong, not supported by the evidence or pure wishful thinking. Positively Moncktonian in its cavalier disregard for the facts, but lacking the great man’s prolix delivery and intellectual turgidity…
Followers of events in the Arctic will know Goddard as the erstwhile author of numerous and inventive “sea ice updates” at Anthony Watts’ µWatts blog — a man with an amazing ability to conjure cooling out of nothing. A few months ago an obdurate Goddard appears to have strained the patience of the saintly Watts and he departed to set up his own blog called, with no apparent hint of irony, Real Science.
To illustrate just how far Goddard’s SPPI opus stays from reality, let’s consider his claim that “Greenland temperatures are cooler than 70 years ago“. To arrive at this conclusion he chooses two Greenland temperature stations from the NASA GISTEMP dataset (Godthab Nuuk and Angmagssalik), plots their annual averages over the last 100 years, finds two periods of warming, and then — after long detours around sea ice and CO2 — declares that Greenland has cooled over the last 70 years. Cherry-picking at its finest…
What does the NOAA Arctic Report Card have to say about current Greenland temperatures?
A clear pattern of exceptional and record-setting warm air temperatures is evident at long-term meteorological stations around Greenland. For instance:
Nuuk (64.2°N along Greenland’s west coast): Year 2010 summer, spring, and winter 2009/2010 were the warmest on record since record keeping began in 1873.
Temperature records were being set all round Greenland during the last year, leading to a record ice melt season: the area of the ice sheet that melted was 8% greater than the previous record, set in 2007, and melt continued for much longer than usual:
The melt duration was as much as 50 days greater than average in areas of west Greenland that had an elevation between 1200 and 2400 meters above sea level.
The obvious disconnect between Goddard’s reporting and the real state of Greenland goes a long way to suggest why he was dropped by Watts, and it says just as much about SPPI’s decision to run his material. To paraphrase former NZ prime minister Rob Muldoon, Goddard’s move has raised the average IQ at both places…
Meanwhile, followers of the antics of Monckton will be puzzled by the poor quality of his recent output, and mystified by his inability to carry the floor at a recent debate in Cork. The peer’s attempted rebuttal of the dismemberment of his testimony to Congress earlier this year is thin stuff, long on words (of course) but woefully short of substance.
Slightly meatier is his attempt to debunk a recent keynote address given by Obama’s science adviser John Holdren in Oslo in September. Here’s a chunk of classic Monckton:
On go the lurid scares. “Melting permafrost” is next. The fact that many of the burial grounds of the Vikings around the Hvalsey settlement are still under permafrost to this day, when they were certainly not under permafrost when the bodies were buried, is conveniently overlooked.
This is a claim that has popped up in a number of Monckton’s articles, and one that’s often repeated by sceptics who want to pretend that conditions in Greenland are not unusual. Unfortunately, as is so often the case when you look into the details, it turns out that Monckton is talking nonsense. The Citizen’s Challenge blog decided to do some exhumation of the facts, and got in touch with a few experts who know the Hvalsey site well. Here’s what Georg Nyegaard, curator of the Greenland National Museum & Archives had to say:
I know the site of the Hvalsey Fjord Church very well – was the curator of the nearby museum of Qaqortoq for 12 years. You are completely right about your doubts: There is absolutely no permafrost at this site.
I look forward to Monckton’s retraction and apology for so grievously misleading his readers, but history suggests I would not be wise to hold my breath while waiting. But Monckton isn’t finished with permafrost. Here’s his next sentence:
In fact, melting permafrost is nothing but a good thing: despite the lurid tales of methane trapped in the permafrost and waiting to erupt and give the planet a fever, methane is really a non-issue now that the Russian pipeline to Europe has been repaired. There has been no noticeable increase in atmospheric methane since the repairs were completed in the year 2000. If the permafrost were to thaw, billions of acres of productive agricultural land would become available.
Breathtaking stuff. Manages to ignore the evidence, downplay the danger, and blame the Russians, all in one sentence. It’s the sort of claim Monckton can make in a debate, leaving his opponents wondering whether they should unpack the falsehoods or ignore them. But such sophistry didn’t work for the prolix peer when he took part in a debate with Graham Parkes, professor of philosophy and head of the school of sociology and philosophy for University College Cork, at the beginning of October. Scott Mandia has Parkes’ full speech here.
The result? Parkes won the debate by 100 votes to 3. Sic transit gloria Moncktonii…
(*) “Valuable”, in so far as it makes SPPI’s output look even less credible (if that’s possible).
Gone for good: Arctic Ocean ice free all year by the 2040s?
A few days ago I used a combination of Arctic sea ice volume data from the University of Washington’s PIOMAS model and NSIDC sea ice extent numbers to project that the Arctic Ocean would be effectively ice-free in late summer within ten years. The key to that exercise was the rate at which the volume of sea ice has been declining — 350 km3 per year over the last 30 years for the full dataset, 410 km3 per year over the last 20, and 740 km3 over the last decade at summer minimum. The rate of volume decline has obviously been increasing. Using those numbers to project ice extent in the future is one thing, but they also tell us something interesting about the overall Arctic heat budget — and we can use that to make a rough guess about when the Arctic will become ice-free year round. The answer is surprising…
Continue reading “Gone for good: Arctic Ocean ice free all year by the 2040s?”
All around the world
The Arctic Ocean has been circumnavigated by sailing vessels in a single season for the first time. The Norwegian trimaran Northern Passage reports that it has passed 74ºN, traditionally regarded as the eastern end of the NW Passage, and is now sailing into Baffin Bay heading for Pond Inlet. The Russian boat Peter 1is reported to be about one hour’s sailing ahead of them. In their blog post marking the milestone, Thorleif Thorleifsson and Børge Ousland provide this telling comment:
It is, unfortunately, the dramatic changes in Arctic sea ice conditions in recent years that have made this trip possible. On the time of Roald Amundsen it took five to six years to complete the same distance, due to the extremely difficult and demanding ice conditions. Now we have proven that it is possible to make the voyage in a 31-foot fibreglass sailing boat, equipped with a 10 horsepower outboard motor for emergencies. This shows how dramatic and how fast these changes are happening. The changes that we are witnessing will influence climate on a global scale, in addition to the whole range of animal life in the Arctic – especially seals and polar bears, whose lives are dependent on the sea ice.
It is our hope that our voyage will be seen as a strong, visible symbol of the scale and the speed of these changes.
Congratulations to both teams for their remarkable achievement. Given that the first circumnavigation by a sailing vessel was made by the French yacht Vagabond over two seasons as recently as 2002-2003, it’s clear that the pace of change in the Arctic is not slackening. Reflecting that, the Arctic Forum — a meeting of countries with claims to Arctic territory — is currently underway in Moscow. The Independent reports that the mood of the meeting is “conciliatory”, but the pressure to establish territory is growing as the rush to exploit oil, gas and mineral resources intensifies (see BBC for more).
[Updated] And to remind us that what’s at stake in the Arctic is a great deal more than a few billion barrels of oil, Yahoo News carries an IPS story on Arctic warming and the methane problem. If the average global warming is held to 2ºC (which doesn’t seem likely under present policy settings), the Arctic will warm much faster. NSIDC director Mark Serreze is characteristically blunt:
“I hate to say it but I think we are committed to a four- to six-degree warmer Arctic,” Serreze said.
If the Arctic becomes six degrees warmer, then half of the world’s permafrost will likely thaw, probably to a depth of a few metres, releasing most of the carbon and methane accumulated there over thousands of years, said Vladimir Romanovsky of the University of Alaska in Fairbanks and a world expert on permafrost. […]
That would be catastrophic for human civilisation, experts agree.
In other words, we have very good reasons to believe that settling for a 2ºC target would be to acquiesce in a global disaster. We can only hope for two things: that the climate commitment (the inevitable warming “in the pipeline”) does not push the Arctic into a huge release of methane, and that the world’s leaders wake up to the real scale and urgency of the problem. For all our sakes
[Oasis]