Climate Change – an alternative approach

The key objective in the face of climate change is to reduce the atmospheric concentration of carbon dioxide from the combustion of fossil fuel. Certainly there are other aspects, it would be useful not to cut down forests for example and there are other greenhouse gasses but as this is The Oil Drum we’ll focus on fossil fuels and CO2.

The entire debate when it comes to fossil fuels and climate change is focused on demand, the consumption of fossil fuels and the resultant emissions. This is not the only approach. Here I propose an alternative approach that totally ignores emissions but instead focuses on the extraction of fossil fuels from the ground.

Last month I was at an event where George Monbiot (www.monbiot.com), the environmentalist writer for The Guardian newspaper and energetic campaigner on climate change gave a speech. The speeches and Q&A sessions were interesting enough but as the event wore on I grew more and more uneasy as it dawned on me that the speakers and several hundred people in the room were missing what seemed to me to be the key issue.

People were only talking about demand. About aviation expansion, food miles, road construction, China’s coal power stations etc.. This created an unwieldy monster with 6.5 billion individuals and millions of corporate and government stakeholders. The way forward seemed impossible.

This observation characterises the whole climate change debate – it only considers demand. The solution is identified as behavioural and technological change delivering reduced demand and resulting emissions. The Kyoto Protocol, whilst its objective is:

“stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system.”
...attempts to achieve this by signatories all reducing their emissions by agreed percentages. The language of the climate change debate is emissions, national and per person. Carbon trading and offsetting is presented as a way of using the market to achieve cost effective emission reductions.

I think there are problems with such a demand focused approach.

Let’s go back to first principles. Climate change is largely caused by increased CO2 concentrations in the atmosphere. This comes about from the combustion of carbon rich fossil fuels pumped or mined from the Earth. To be successful, any action that hopes to reduce the atmospheric CO2 concentration from what it would otherwise have been must result in reduced fossil fuel extraction from the Earth (one exception to this rule is post-combustion sequestration). When considering action the following simple test should always be applied:

    Will considered action leave fossil fuels in the ground that would otherwise be extracted?
This seems blindingly obvious however I don’t see anyone asking or evaluating this question, certainly nobody did in the meeting last month. When I started looking at this I realised it was not at all obvious that the current approaches to climate change would pass that test. The difficulty is that the relationship between demand and supply is anything but absolute.

One comment from Monbiot particularly grated. He was talking about flying to Sydney and stated that if you chose not to fly you were making an immediate carbon saving (as apposed to offsetting the flight where the saving was at least delayed if it ever happened at all). Does tearing up your ticket to Sydney reduce carbon emissions? Ask the question, have some fossil fuels been left in the ground that would otherwise be extracted? The answer, absolutely not, and I’m not talking about how the plane’s still going to fly without you.

I’m talking about the fact that oil extraction is not determined by demand, it’s determined by supply. It has been since earlier this decade when the market price diverged markedly from the production costs.


Source: EIA

We know the market price has diverged from production costs as the amount of money the oil companies are spending on exploration and production has not increased in step – resulting in a the large profits reported in recent years.


Source: Energy Watch Group Oil report Oct 2007

When a market exhibits this it means there is shortage, marginal supply is no longer determined by marginal price as it would be in a normal market and as such whether you fly to Sydney or not, even assuming British Airways then burns less oil that day as a result, does absolutely nothing for global oil production. It fails the test and does nothing for atmospheric CO2 concentrations.

With BA bidding for slightly less fuel, the market price will be marginally reduced enabling the previously marginally out-priced consumer to take up the slack. Some reallocation will have occurred, however Exxon’s production and resultant global CO2 emissions will remain unchanged.

An Alternative Approach

There is another way. Instead of attempting to change the behaviour or technology of billions of stakeholders we could instead just concentrate on the few dozen fossil fuel producing countries. A few dozen vs. billions – that has to be easier?

If a government accepts that climate change is serious, that atmospheric concentrations of CO2 must be reduced, all they have to do is to reduce the extraction of fossil fuel from their territory. We don’t even need to worry that there could be dozens of companies operating in a country – the government licences their operations.

To grasp just how simple this is we can return to oil. Oil is extracted from ~98 countries in the world today. In ~60 of these countries oil extraction is already in terminal decline (Oil Depletion Atlas). Would the US sign up to an international climate change bill that only had one clause:

    Annual oil extraction from the USA will reduce from year to year.
Almost 40 years after peak production, the US will have no difficulty signing that bill. There are arguably only about 30 countries in the world with an ability to maintain or increase oil production. Convince the governments of these 30 countries to reduce their annual oil extraction rather than maintain or increase it and global CO2 emissions from oil are guaranteed to fall. Of course the countries artificially curtaining their production may feel this unfair, why should they alone bear the cost? This issue of fairness could be addressed two ways, by asking all countries to artificially curtail extraction or by financially compensating those concerned. See Ecuador below.

We haven’t had to convince billions of people, we haven’t had to build new vehicle fleets or infrastructure, we haven’t had to do anything other than pass and enforce a single line of legislation in a couple of dozen governments, many of whom already agree that climate change is serious enough to do something about. The resulting impact on emissions would be immediate.

The same can be said for coal. Here the numbers are even better; only 10 countries are responsible for 96% of the world’s hard coal extraction (World Coal Institute). Convince these governments to extract less and the job is done. Also six countries (USA, China, India, Russia, South Africa, Australia) hold 84% of world hard coal reserves. Four out of these six (USA, Russia, China, Australia) also account for 78% of world brown coal reserves (COAL - The Roundup).

Partial Adoption

Another problem with the conventional demand based approach is that a partial solution doesn’t cut it. If the UK reduced the oil consumption by 10%, that newly freed up resource would be consumed by another country. However with the supply focused approach, if Saudi Arabia reduced its oil extraction by 10%, close to 1 million barrels per day, global oil supply (and the CO2 emissions associated with it) would fall. In the alternative approach, one stakeholder can make a difference. The same can not be said for the current approach.

Oil Depletion Protocol

In the case of oil there already exists a framework to mandate reduced extraction rates from countries that otherwise would increase their production. The Oil Depletion Protocol originally proposed by Colin Campbell states amongst other things:
No country shall produce oil at above its current Depletion Rate.
www.oildepletionprotocol.org
Depletion rate is defined as annual production as a percentage of the estimated amount left to produce.

Ecuador

A supply side approach has also been suggested by Ecuador with respect to their largest untapped oil fields in the heart of the Ecuadorian Amazon.
Ecuadorian President Rafael Correa and his government say that if the international community can compensate the country with half of the forecasted lost revenues, Ecuador will leave the oil in Yasuni National Park undisturbed to protect the park's biodiversity and indigenous peoples living in voluntary isolation.

"The first option is to leave that oil in the ground, but the international community would have to compensate us for immense sacrifice that a poor country like Ecuador would have to make," said Correa in a recent radio address.

President Correa estimates the compensation figure at around US$350 million per year.

...

The oil fields, known as Ishpingo-Tiputini-Tambococha, ITT, are the largest untapped oil fields in Ecuador. They have been estimated by Ecuador's government and analysts to contain 900 million to one billion barrels of oil equivalent, about a quarter of the country's known reserves.

Reference

This approach passes the test. Fossil fuels will be left in the ground that would otherwise be extracted. The report was from April 2007, I’m not aware of subsequent developments.

Such wealth transfer is not without its problems though as a recent communication with David Fleming highlighted. It would transfer a lot of money to low-dependency nations, which might well be spent building highly energy dependent systems. Money will be transferred away from high-dependency nations, just when they need it to achieve the massive turn round in their economies. Traditional societies could be disrupted by sudden inflows of wealth.

Tradable Energy Quotas (TEQs)

Whilst this article has considered supply reductions and is critical of the current demand driven approach, if implemented without addressing demand the consequence could be brutal. The traditional market based approach could lead to a highly inequitable collapse in order for demand to match supply.

Any Governments favouring a more orderly response would be wise to adopt Tradable Energy Quotas (TEQs) as detailed here: www.teqs.net

TEQs is an energy-based, national system that enables a country to reduce its reliance on fossil fuel fast whilst ensuring fair access to energy for all.

Conclusion

Attempting to reduce atmospheric concentrations by demand side approaches is unlikely to succeed as it relies on billions of stakeholders making behavioural and technological changes. A partial adoption delivers a disproportionably small response and possibly none at all.

A supply side approach achieved through extraction limits, agreed by a small number of governments removes the complexity associated with billions of stakeholders. There also exists the opportunity to compensate this small number of countries for lost revenue.

Whilst this artificial limitation of global fossil fuel supplies will create energy shortages, if the climate change predictions are correct this is likely to be preferable to the impact of climate change from unchecked extraction and combustion of fossil fuels. In any event, as fossil fuels are finite their reduced supply is inevitable. Should we reduce their supply before and in mitigation of dangerous climate change or after and cause dangerous climate change?

shouldn't the real alternative be in here?
http://www.energy.iastate.edu/becon/downloadNH3/AmmoniaMtg07.html

Very nice link. The solid state method of ammonia production looks very useful. I looked at another low pressure method here, which is thermal so that solar energy can be used without conversion. Might be cheaper that using electricity but the energy reduction reported in your link looks quite good.

Chris

SSAS only need part of its energy input in electricity, the rest is in heat.

Yes, I saw that in the last slide. Seems clever.

Whilst I think it is important to approach the problem of climate change from all angles, I feel you are unduly haranguing demand-side activists. I've been witness to your views on this subject developing over the last few months but I maintain that I don't think its helpful to make this distinction, if only to tell activists, who are trying to improve energy efficiency and cut demand, that they are 'doing it all wrong'.

Besides this, I think there are some flaws in the argument that require further consideration. Within the few dozen governments that we should 'just' focus on, it seems to me from Strahan's map, with the exception of Canada, (and perhaps parts of Southern America, based on more socialist regimes) The governments who you would need to approach to curb supply, are the least likely governments to prioritise climate change above national profits. Kazakhstan has still yet to ratify the kyoto protocol and Iraq hasn't even noticed it was created. What's more, the coal producing countries you mentioned are those most robustly opposed to legal emissions limits - what makes you think they'll jump at the chance to stop taking coal out of the ground.

If America needs to be paid not to take coal out of the ground in order to convince them its a good idea, who the hell is going to pay them??
If supply is to be cut in countries where oil has not already peaked, and they are to be convinced by the Western world (consisting of the most oil dependent countries), how do you expect this to come about without the behavioural change needed to induce leaders to do the convincing on behalf of the oil dependent countries. Put another way, what leader would willingly ask a major oil producer to cap and reduce their output, while their population maintains a soaring demand for that oil.

More than anything, I think your analysis shows your pessimism for grassroots groups such as your local Transition group, which I note today has put together a programme of events with national level spokesmen for the largest transition community in the UK after a mere few months of existing.

Those of us choosing not to fly are a growing number, and your presumption is that any fuel I don't burn will lower the price so that other people will just burn it anyway. Again this underlines a fundamental pessimism that a critical mass of people making different choices has no impact on leaving fossil fuel in the ground. Though I think Monbiot could benefit from entertaining this tactic, it is one-dimensional to take this test mentioned as the only yard stick of success. By making different choices about the way we consume fossil fuel at an individual level we raise awareness in our own communities about these issues, engage others with this debate, question societal values about oil dependence and much more. If oil producing nations are expected to impose policies that cap oil production whilst Americans are still lusting after 4mpg monster cars, I wonder how long it will be before another oil producing nation is 'occupied' and such policies reversed.

It would be comforting to accept your arguement, Louise, to feel that our no-flying and transitioning are doing good, are keeping fossil fuels in the ground. However, the difference between the oil price and the production cost demonstrates that Chris's pessimism is justified. Fuels that you and I don't burn will be burnt by others entering the market.

Nobody is suggesting that empowering the leaders of fossil fuel rich nations to forego production is going to be easy but it is the only way to stop the carbon being burnt.

To reduce supply in the current situation without placing into effect a demand side plan that replaces fossil fuels with alternative energy sources is to beg for disaster on a massive scale. The above paper overlooks entirely the deep dependency that all current human socio-economic structures have upon fossil fuels. The author is in reality proposing that we accomplish by directive precisely what Mother Nature will require through the natural terminal decline of productivity inherent in the concept of Peak Oil. Soon global production of oil will begin its steady terminal decline, providing the restriction upon supply that the Vernons propose. Why take years convincing 30 nations to cut back on production when Nature will do that anyway? And who would enforce this? No one would have the incentive, neither producers, nor consumers.

The article reveals a shocking lack of perception of the catastrophic effects that would ensue upon the heels of such a decision. The global economy would suffer greatly, critical services and food supplies would be at risk, transport upon which 90% of global commerce and we all now depend so heavily upon would be negatively affected and immense pressure would be brought to bear upon the producing countries to increase production. The stronger nations might well say, "Sod it. We'll just take what we need with our military". Weaker nations would likely get very little and people will starve. To the rather naive suggestion that producing countries be compensated for cutting back, just how will that be done when the economy is going to hell in a basket?

Bottom line. It's just not that simple. The things that will help the most to cushion us against the approaching disaster via peak oil are (1) conservation and (2) heavy investments in alternative energy.

We don't have much time. Climate change is no longer humankind's most immediate problem.

Victor, the questions are:

Is natural decline in fossil fuel production fast enough to prevent dangerous climate change?

Is the damage to society by a faster reduction in fossil fuel use worse than the resulting climate change?

I would suggest that we can’t rely on natural depletion alone – Hansen’s business as usual scenario of just burning conventional oil, gas and coal takes us to 580ppm, that’s before looking at unconventionals or any positive feedbacks.


click to enlarge

Regarding the relative damage of rapid fossil fuel loss or climate change, who can tell? What do you think about TEQs as a response to rapid fossil fuel loss?

Nobody is suggesting that empowering the leaders of fossil fuel rich nations to forego production is going to be easy but it is the only way to stop the carbon being burnt.

Impossible is the word that comes to mind when considering any political leadership proposing either supply or demand restraint.

The reality is any political party that proposes that recession is the way forward will either not get voted into power or will be voted out of power. This means the FF will be burned, almost everybody wants growth and a better way of life if possible - get used to it, and plan accordingly. Sadly, it looks like we don't have enough resources or time to waste on unproductive sidetracks.

Regarding the relative damage of rapid fossil fuel loss or climate change, who can tell?

Nobody. This is the big problem - nobody knows what the future will be, and politicians won't do anything that adversely affects society unless you can tell them with precision.

The current statistical probabilities are a completely inadequate tool for anybody to decide which way to progress.

As has always happened in the past, it looks almost certain that nature will decide the way forward, not humans.

If you understand the political process you will realise the world's politicians don't have the solutions to the approaching cluster of problems - so, don't rely on them for you and your family's future well being as it's very probably not a viable plan.

Xeroid.

to prevent dangerous climate change?

shouldn't it be to prevent MORE dangerous or ABRUPT CC?

how dangerous is dangerous? hasn't dangerous CC already occurred and is getting more dangerous everyday? it may indeed be politically "unwise" to state the truth in mass media, but is that so even in TOD?

Is natural decline in fossil fuel production fast enough to prevent dangerous climate change?

Is the damage to society by a faster reduction in fossil fuel use worse than the resulting climate change?

You must first answer whether dangerous climate change is even on the horizon to begin with. How bad will it be? How much will be affected? Not the alarmist Goristic dire pridictions that even the IPCC contradicts, but the solidly understood scientific evidence.

Richard Wakefield
London, Ont.

No one is ahead of their time, just the rest of humanity is slow to catch on.

Richard,

I thought you were now persuaded. The IPCC synthesis report makes a big point that the rate of sea level rise is increasing. I think it is the economists rather than the scientists who are on squishy ground.

Chris

There is no increase in the over all rate of sea level. I noted before I would find refs and here are a few.

http://www.worldclimatereport.com/index.php/2006/12/04/decelerating-the-...

http://www.worldclimatereport.com/index.php/2007/09/14/sea-level-slowdow...

http://www.worldclimatereport.com/index.php/2007/02/09/shocking-facts-ab...

Also note that the amount of snow fall in the Antarctic is increasing, and together with the reduction in Arctic melting is a mere 5% over all reduction in ice between the 2.

I read as much as I can on both sides of the issue, as long as WorldClimateReport reviews PEER REVIEWED papers that contradict the premisses of AGW, I remain skeptical. Especially the hard core extreme alarmist Gorist dogma.

No don't give me the excuse that WCR is funded by Big Oil. A few months back Newsweek tried to do the same thing, but had to retract their own article when it was revealed that, yes, Big Oil in the past 20 years has put in some $18million into challenging AGW theory. But those who work in the theory in the same time frame were funded $50 BILLION. Thus who has money to loose at stake?

And no, the latest IPCC report is 7" to 23" in 100 years. The 7" is the current past average rise that has already been happening for the past 100 years of measurements. That rate has not yet been found to change and the IPCC report admits that.

Richard Wakefield
London, Ont.

No one is ahead of their time, just the rest of humanity is slow to catch on.

why haven't the investment bankers thought about creating yet another derivative that perhaps can make up some of the losses they are suffering from the subprime scandal - write up some put and call options on the coastal properties that have values directly linked to the sea level - the sea-level-rise believers can put their money in puts and doubters can put their money in calls? shouldn't the IPCC members get at least a meaningful percentage of their pay by the type of options according to their opinions?

Richard,

From the synthesis report:

Rising sea level is consistent with warming (Figure SPM.1). Global average sea level has risen since 1961 at an
average rate of 1.8 [1.3 to 2.3]mm/yr and since 1993 at 3.1 [2.4 to 3.8]mm/yr, with contributions from thermal
expansion, melting glaciers and ice caps, and the polar ice sheets. Whether the faster rate for 1993 to 2003 reflects
decadal variation or an increase in the longer-term trend is unclear. {1.1}

You other points are not relevant since you set the criteria that you need to see a change in the rate of sea level rise. Now you've seen it.

Chris

As long as the 'business as usual' people control the media, all the global warming scientists don't matter. It takes waiting till it's too late, till the hurricane surge comes over the levee, the orchards and vinyards run out of irrigation water, the forests burn down and take exurbia with it, and the Arctic ice pack disappears completely, before it is no longer possible to deny global warming.
Which is about where we are right now.
OK, so we denied tenure to people that talked about global warming years ago, when it wasn't too late. So we defunded people by denying them grants to gather the data that tracked global warming years ago, when it wasn't too late. It doesn't matter any more.
The question that matters now is, what can we do. Note, I am not asking what should we do, I am asking what can we do.
If we shut down oil production six years in advance of running out anyway, all that does is piss off the gasoline buyers, the commuters, and make them blame the Liberal environmentalists.
The Conservative denialists get off scott free and walk away with the money, laughing.
And what does it get us?
Better to just let us hit the wall six years harder. What difference does it make? We are in an irreversible climate shift. Six less years of burning oil and we are not going to save Greenland. Those six years are going to increase greenhouse warming by what, six percent? It's a compound interest thing. The last six months of running up your credit cards are not nearly as ruinous as the first six years.
We are not just concerned about the present amount of CO2 in the air, we are concerned about the melted snow that is no longer reflecting sunlight, the treeline moving north across the taiga and higher along the mountain sides, absorbing sunlight as the snow lies below the branches, the CH4 desorbing from the muskeg as the permafrost melts, and bubbling up from the wave stirred hydrates of the Arctic as the wave damping ice pack melts in the summer sun of the Arctic ocean.
Greenhouse gases from oil and coal are no longer the most important part of the global warming problem. The compound interest on the old greenhouse gases are what is more important.
You know, we went through this before in California. The ecofreaks got the government to buy up the last of the old growth forest. We saved about five years worth of lumber industry, and spent the next forty years with the rural areas bitching about us denying them good jobs at good wages, and subsidizing them by supplementing their taxes to compensate them for losing the employment. We got to compensate them eight times for every lost dollar of wages.
Why go through that again?
Hit the wall six years early and destroy the Conservatives as a political philosophy. Works for me.

Example of unsubstantiated hype. Greenland isn't all going to melt. The last time it was ice free was 180,000 years ago. Other past warm spells did not melt it all, neither will this one. Besides, it would take THOUSANDS of years to melt all that ice even if it warmed with no winters. You can't get past physical laws.

GW is happening, we have to live with it. We should not be spending a dime on trying to stop it as that will use up valuble resources we soon won't have. As oil depletes more people are going to starve to death than people who drown from higher sea levels. Oops, but that isn't happening...

We need to funnel our resources to preparing for a society with dwindling FF supplies. This hype over GW is distracting everyone from that goal, making the time when that realization does happen way too late.

Richard Wakefield
London, Ont.

No one is ahead of their time, just the rest of humanity is slow to catch on.

Greenland isn't all going to melt.

It doesn't all have to melt to cause serious trouble.  Total melting will raise sea levels ~21 feet, but 10% will flood cities, river deltas, etc.

GW is happening, we have to live with it. We should not be spending a dime on trying to stop it as that will use up valuble resources we soon won't have.

Quite wrong.  Many of the options for switching away from fossil fuels (esp. nuclear and some of the biofuels) also have a large impact on AGW emissions.  Relatively minor changes to system designs and incentives can address both problems simultaneously.

I think you are correct that we are beginning to see feedbacks that could ultimately dwarf the effect we have had so far on the climate, but I think you are incorrect that how we behave now makes no difference. Only half of our emissions remain in the atmosphere so drastically reducing our emissions should lead to reduced forcing since the atmospheric concentration of CO2 should begin to come down. We will know if there are feedbacks than need to be handled once we have done this, that is we will see if the carbon dioxide concentration continues to decline or if it begins to rise again. If the latter occurs, we should have time to remove carbon dioxide from the atmosphere ourselves since any feedbacks happening now are still small compared to our emissions.

Chris

Chris, to make the 23" in 100 years the rate must go up THREE TIMES! (for Gore ridiculous 20 feet it would have to rise 10x more than that. Gee, that is a MAGNATUDE more!)

But that rate change is not happening. In the World Climate Report summaries of REFEREED PAPERS is it quite clear that to establish the actual rate of increase is very hard. It goes through cycles of faster rates and slower rates, that at 7" per year has been going on for more than 100 years, long before we came along with FF buring.

If you read the summary in WCR you will note that the rate DROPPED between 1940 and 1993. And the quote you note is very clear that the current increase CANNOT WITH CERTAINTY be because of GW, it might, and most likley is, due to these small fluctations. Besides, this rate change is VERY small, just a few percent change.

Bottom line is the scare mongering of FEET or METERS increase in the next 50 years is PHYSICALLY IMPOSSIBLE.

So if all this melting is going and, and reviews in WCR dispute there is wide scale increases, where is all the water going? This is a serious, and theory breaking, problem. Theories stay or fall on their predictions. If the predictions of feet increases in sea level in the next 100 years does not pan out, the theory is in serious trouble. If there is no change in the rate over the next ten years, the theory is in trouble.

Please, don't just take the IPCC and the Gorites hook line and sinker, read papers that do not support the AGW dogma, there's lots of it. Hence I remain SKEPTICAL (not a denier) that we are contributing 100% to GW and hence can change the current trend.

And BTW, there is an astrophysis, who just died recently, who noted that the changes in the planets around the sun causes the solar system center of gravity to wobble, and with it the sun wobbles causing more or less activity, which affects our climate.

Richard Wakefield
London, Ont.

No one is ahead of their time, just the rest of humanity is slow to catch on.

"...the changes in the planets around the sun causes the solar system center of gravity to wobble, and with it the sun wobbles causing more or less activity, which affects our climate."

Total Crapola! (no surprise you don't understand AGW)

http://www.canada.com/nationalpost/financialpost/comment/story.html?id=b...

And you know this for a fact? Where have you published refuting this? And I do understand AGW, that's why I reject it.

Richard Wakefield
London, Ont.

No one is ahead of their time, just the rest of humanity is slow to catch on.

No, you don't understand it.  If you did, you'd understand that the glacial cycles correspond to Earth's orbital eccentricity and axial tilt/precession.  Jupiter influences Earth's orbital eccentricity IIRC, but that's already accounted for.

Could it be that one aging scientist could be right, and the entire IPCC is wrong?  Far more likely that the aging scientist is getting senile, and you're latching onto his claims because they align with what you want to believe.

These are different issues entirely. You were concerned with observed changes. Those are observed. How well projections work is another matter. It is not too hard to say that with the present trend of the rate of sea level rise doubling every decade we would see 3 meters a year in 100 years. Or we might project a linear rate of increase so that the rate is 3 cm/year in 100 years and it takes 30 years to get one meter. As the IPCC points out, the current rate of sea level rise is consistent with model expectations as is the observed increase in the rate. What we do know is that thermal expansion alone gives a couple of meters once the oceans have fully mixed so you'd need quite a lot of snow piling up somewhere to counter that. We also know that just a couple of degrees or so more warming gives us about 25 meters of sea level rise from melting which could come fast or slow. The science is beginning to favor fast. The reason we know about the 25 meters is because that is what it did last time. The maxium observed rate of increase for sea level is about 5 meters per century but that is likely a lower limit since decade level rates can't be discerned, so five meters in a decade could have happened. Some evidence of destructive flooding suggest pulses are involved in these kinds of things. At least meters in a half a century have been observed so this is not physically impossible. In our present situation of very rapid climate change, it might be more likely to be expected than not.

For those who like more direct evidence than the rate of sea level rise I think this link demostrates our situation very clearly. In another 40 years, the Mountain Ash that used to range down to West Virginia won't have a habitat in the lower 48. That is much less time than the life of a tree. You can see why mass extinction is expected from the climate change we are causing.

Chris

As the IPCC points out, the current rate of sea level rise is consistent with model expectations as is the observed increase in the rate.

That is NOT what the IPCC says. It clearly notes that the current (small) rate change cannot with certainty be known to be by anything other than normal variations. You even posted that quote.

What we do know is that thermal expansion alone gives a couple of meters once the oceans have fully mixed so you'd need quite a lot of snow piling up somewhere to counter that

Unsubstantiated speculation. The oceans will never "fully mix" it will always have warm sections, and deep cold sections, and have currents that circulate. It's gone on like that for 4 billion years.

The maxium observed rate of increase for sea level is about 5 meters per century but that is likely a lower limit since decade level rates can't be discerned, so five meters in a decade could have happened.
...
At least meters in a half a century have been observed so this is not physically impossible.

When and where did this happen? Post a link to the reference to support this. There is nothing in the past 100 year measurements that shows this. Go to the Tide and Currents website and give me the link of the place where that happened.

The graphs I've seen published shows that at the end of the last ice age the rate of sea level was much faster than today, but has since dramatically slowed down (to the current 7"/Cy on average) looking like the left half of a bell curve.

Richard Wakefield
London, Ont.

No one is ahead of their time, just the rest of humanity is slow to catch on.

Richard,

You need to read the synthesis report. Clearly, the increased rate of sea level rise is taken as supportive evidence. It is important to caution that past performance may not be inticative of future results. We don't know if we are settling into 3 mm/yr of if the trend will change in the near future, perhaps to 6 mm/year.

You clearly don't understand thermal expansion. There are temperature variations in the oceans. But those deltas are not what mixing is about. The deltas may remain the same (or get back to what they were) but the deep water is warmer with mixing. The whole scale shifts preserving the deltas. So, there are portions of the oceans now that have yet to warm, but very predictably will which leads to more thermal expansion.

It is during periods of catastrophic deglaciation that the highest rates of sea level rise are measured. You might want to read Hansen et al. in Philispohical Transactions this year for a masterful treatment. Read it carefully, and you'll be well repayed for the effort.

Chris

Chris, to make the 23" in 100 years the rate must go up THREE TIMES!

The pace of melting of the Greenland ice cap has tripled in just the last 5 years.  It is a fait accompli.

Chris,

The presentation at the Houston ASPO meeting from NASA GISS pretty much said that peak oil as typically portrayed here together with peak coal, similar to the way Dave Rutledge or the Energy Watch Group look at that, together look like Hansen's alternative scenario (which is lower than any scenario considered by the IPCC) rather than his BAU scenarios. However, NASA GISS is moving to the view that the level of dangerous climate change lies below 450 ppm CO2. You can understand why if you read Hansen et al.'s treatment of slow feedbacks in their recent Phliosophical Transactions publication linked here.

I feel that you are correct to point out unconventional oil, and I hope Dave will look at "acts of desperation" coal since that seems to be the basic model for coal in any case, but some depletion models look a lot different from the Hansen or other BAU models.

Chris

Hi mdsolar,

What are "acts of desperation" coal?

Thanks,
Dave

Hi Dave,

I'm thinking of very thin or very deep coal seams that we would not consider economical but which exist. The effort in Utah seems to me to be an act of desperation, but one could imagine even greater brazenness. I'm wondering if desperation could be quantified in mining deaths per ton? If so, then we have a long way to go to match early 20th centrury desperation levels in the US while deperation tolerance may be higher elsewhere.

Chris

Chris,

Due to depletion of reserves the peak of CO2 emissions might happen 60 years sooner than Hansen projects. The CEO of ConocoPhilips is on record claiming that oil production will never go above 100 million barrels a day. World oil production has declined in the last 2 years. Why keep treating the conventional nightmare CO2 scenarios seriously?

The article reveals a shocking lack of perception of the catastrophic effects that would ensue upon the heels of such a decision.

Not necessarily. Economies react sensibly to slow changes, catastrophic change comes only from catastrophic changes.

For example, we can say that a depletion in supply of 0.01% a year could definitely be compensated for without any significant trouble at all by efficiency gains, putting alternate means of energy generation, and so on; a depletion of 50% a year would definitely make a mess. So, somewhere between 0.01% and 50% depletion is a level which will allow for useful change but cause no economic disaster.

You also neglect to recall that the essence of the idea of peak oil is that a big drop in supply is inevitable. Whether peak oil is today or in 100 years, at some point there'll be a dramatic drop in supply - and we'll have to adjust then. Do you imagine that change forced upon us by physical limits is somehow less painful than change we choose to go through by treaty and law?

We're climbing down a cliff, and the rope is unravelling. So, we can either try to climb down before it breaks, or we can just hang around waiting until it breaks and drops us.

Hi Biff,

We haven't been introduced, but Chris has mentioned fondly the Lincolnshire life.
I believe empowering the leaders of fossil fuel nations to forgo production is not just 'not easy' but impossible without the backing of the majority of the global community.

While I suppose one could imagine circumstances in which people are aware of the problem, insist on the capping of production in oil-rich countries, and yet decide not to change their own behaviour, I struggle to think of an individual example where someone who fully understands the gravity of this issue has not changed their behaviour where they felt able. It seems that if you are convinced that individual action / government action on the demand-side does nothing, you lose the platfrom from which you could insist suppliers cut their production.

On discussing this further with Chris, I better understand that there are grounds on which to say that right now, the choice not to fly (etc.) does not directly stop any particular quantity of oil being extracted owing to the divergence of the cost of extraction and price of oil as you say, however the direct effect is inconsequential if it builds on the culture that is necessary to make direct caps and reductions. On both demand-side and supply side, attitude change is the most crucial factor, but I adamantly believe that if an attitude change can be achieved, the demand-side changes will happen as a consequence. If an attitude change cannot be achieved, attempts by a few enlightened individuals to try to cap supply will be either short-lived or have adverse consequences.