Tag: ice

Santa’s blues

Polarbear.jpg What’s a Christmas icon to do, when all the ice at the North Pole disappears in summer? This startling question is posed by the latest flush of media attention to events in the Arctic. First there was a National Geographic story on June 20th speculating that the North Pole would be ice free this summer (note: this is nothing to do with record minima, just do with ice around the pole itself). This was picked up by CNN, who went to Mark Serreze of the NSIDC in Boulder, Colorado for comment:

“We kind of have an informal betting pool going around in our center and that betting pool is ‘does the North Pole melt out this summer?’ and it may well,” said the center’s senior research scientist, Mark Serreze. It’s a 50-50 bet that the thin Arctic sea ice, which was frozen in autumn, will completely melt away at the geographic North Pole, Serreze said.

And then everything went quiet, until The Independent in Britain (referred to as The Indescribablyoverhyped on climate matters by Stoat) picked up the story and ran with it under the headline – Exclusive: no ice at the North Pole:

It seems unthinkable, but for the first time in human history, ice is on course to disappear entirely from the North Pole this year.

They seem to be having problems with their choice of tense, and quite how they can justify the “exclusive” tag escapes me… The Drudge Report noticed, and then everyone in the world had to have a go [Telegraph, AP(*)]. Andy Revkin at DotEarth covers it well, and RealClimate chips in with its own analysis. It won’t be long before the usual denialist sites will be spluttering with indignation, despite the fact that the North Pole has a very good chance of being open ocean this summer – even if a new record minimum is not set.

None of this has any relevance to the odds of my winning my various sea-ice bets, but it does give me a chance to post a few interesting Arctic-related links from the last week… As part of its beat-up, The Independent went to Peter Wadhams, professor of ocean physics at Cambridge University, for his impressions on the changes in the Arctic, and the BBC’s been carrying a blog from Liz Kalaugher aboard a Canadian icebreaker that over-wintered near Banks Island. Interesting stuff – note Liz’s comments about the weather. Meanwhile, across the melting ice, the Russian defence establishment is beginning to get worried about the impact of melting permafrost.

(*) The AP story uncovers this truly remarkable and hitherto unnoticed fact: “That pushed the older thicker sea ice that had been over the North Pole south toward Greenland and eventually out of the Arctic, Serreze said. That left just a thin one-year layer of ice that previously covered part of Siberia.” So that ice has somehow left the land and started floating towards the Pole. Be afraid, be very afraid…

The denial twist

hansen.jpg James Hansen [CV], the most outspoken climate scientist in the world, has been stirring up something of a furore. Invited by the Democrats to speak in Washington on the 20th anniversary of his famous 1988 testimony to Congress on the dangers of global warming, he used to opportunity to complain about the funding of climate disinformation campaigns by fossil fuel companies [full text]:

Special interests have blocked transition to our renewable energy future. Instead of moving heavily into renewable energies, fossil companies choose to spread doubt about global warming, as tobacco companies discredited the smoking-cancer link. Methods are sophisticated, including funding to help shape school textbook discussions of global warming. CEOs of fossil energy companies know what they are doing and are aware of long-term consequences of continued business as usual. In my opinion, these CEOs should be tried for high crimes against humanity and nature. Conviction of ExxonMobil and Peabody Coal CEOs will be no consolation, if we pass on a runaway climate to our children.

Prosecuted for “high crimes against humanity and nature”. That’s a pretty radical view and not surprisingly the climate disinformers have been hard at work trying to rubbish the idea – and Hansen and his work.

Continue reading “The denial twist”

Sight of the wind

windturbine.gif Time for me to front up on wind power. As I mentioned last year, our local lines company, Mainpower, is planning a windfarm on the ridge of Mt Cass above the eastern edge of the Waipara Valley. That’s a good chunk of the skyline visible from my veranda. Some of it will be hidden behind Mt Brown, but I’ll still have windmills to tilt at (though no donkey). The resource consent application has now been lodged with the Hurunui District Council [here]. Getting that together has been a major undertaking for one of HT’s regular commenters, Andrew Hurley, as he blogs at the Mainpower development blog (needs more posts Andrew!). There’s a lot of interesting stuff both in the application and in Mainpower’s resource pages.

Here’s the rub. I think global warming’s a huge problem, and subscribe to the view that we need to do more to encourage electricity generation from renewable resources. So can I overcome my latent nimbyism (what, big white things whirring on the skyline?) and welcome the windfarm? To that, the answer is yes. But then the issue becomes complex. Mainpower are asking for consent to build within a “design envelope” which stretches from a lot of little turbines, to a smaller number of really big ones. Which is the least visually intrusive? Depends where you’re looking from.

I’m pondering the options. The little turbines would be more or less invisible from my house – certainly not intrusive – but they would generate the least power and cover the largest area. I’m tempted to prefer the really big turbines, for a variety of reasons. Smaller ecological footprint and significantly greater power generation, but big 125m towers. That would mean making the most of the power available from a good site, and perhaps limit the need for a rash of sites in areas of greater visual beauty.

Submissions close on August 1st. I’m open to debate…

It’s the end of the world as we know it (and I don’t feel fine)

CTarctic110608.jpg For REM, it “starts with an earthquake, birds and snakes, an aeroplane“, for us, it looks like diminishing Arctic sea ice is the sign. Over at Open Mind, the blogger formerly known as Tamino looks in some detail at the sea ice/rapid warming paper I linked to yesterday. His post makes for sober reading. David Lawrence and his team at NCAR and the NSIDC examined runs of the NCAR-based CCSM climate model that included episodes of rapid sea ice loss, and looked at what happened to climate of the Arctic during those periods. They found that the rate of warming increased 3.5 times faster than the average rate models project over the coming century. From the press release:

While this warming is largest over the ocean, the simulations suggest that it can penetrate as far as 900 miles inland. The simulations also indicate that the warming acceleration during such events is especially pronounced in autumn. The decade during which a rapid sea-ice loss event occurs could see autumn temperatures warm by as much as 9 degrees F (5 degrees C) along the Arctic coasts of Russia, Alaska, and Canada.

This is what it looks like in their nifty graphic:

permafrost.jpg

This is what we saw last winter.

200712-200802-pg.gif

Looks as though the process the paper describes is already under way. Canada’s a bit cooler, but then it still has some ice left at the moment…

And the end of the world? Go and re-read my recent post on methane hydrates in the shallow seas north of Siberia. Consider what Lawrence et al have to say about permafrost. Then ponder the meaning of “positive feedbacks in the carbon cycle”. What’s happening up North could make any efforts to reduce global emissions irrelevant, or at best, mean that reaching a relatively low stabilisation target (450ppm?) suddenly a lot harder. Just to make things even harder, we have 30 years of warming to go, even if we could stabilise atmospheric greenhouse gases today.

I’m going to enlarge my veggie garden, and re-examine my thoughts on resilience as a response to climate change.

[Update: Joe Romm at Climate Progress has good coverage.]

[Update 2: Nature‘s In The Field blog reports reactions to the Lawrence et al paper from aboard a ship cruising the Arctic, and in passing confirms some of my thoughts…]

Like takin’ candy from a baby

CTarctic110608.jpg Another day, another bet on sea ice. A few days ago, a regular reader of HT emailed to ask me if I could provide some support in a long series of comments to a post at Poneke! about the showing of Swindle. So I did (my contributions start here). And now I have another bet on this northern hemisphere summer’s sea ice minimum, with a commenter calling himself “malcolm” taking the Stoat position (cold side = more ice than last year, not something out of the Kama Sutra). So here’s an update on events up North. Consider it a form guide, if you will.

Continue reading “Like takin’ candy from a baby”