Is global collapse imminent? (2014) [pdf]
sustainable.unimelb.edu.au
sustainable.unimelb.edu.au
The paper might not be right on all points or might be completely wrong entirely. But it is right on one thing.
If you have have ever taken care of plants, what happens with a plant before it dies is something very odd - nothing.
It will look a little weak, but then it will suddenly completely die - almost overnight, shedding all leaves and going dry.
One thing's for sure, these predictions are exactly like a broken clock.
P.S: Shell is starting an exploration of oil in the Arctic, after Obama's executive order. I don't think the bit about investment in new rigs is well-founded.
In the case of Iran it's more just to try to hurt their economy.
- a reduction in Chinese demand
- increased shale oil production
- Saudi desire to reduce competition from high cost producers including Russia and shale oil
- the failure of ISIS to capture the Iraqi oil fields
- unanticipated increased production from Libya
That's just first order causes. Second order causes are things like the US desire to hurt Russian foreign exchange by hitting their exports, and Saudi desires to decrease investment in new technology.
Now all of a sudden the rhetoric is the slowdown the last quarter was due to the falling price of oil leading to a decrease in manufacturing orders for pipelines and rigs. The shift being that US produces most of its own oil (or used to before the latest Price Wars). If consumer confidence is low, the energy savings are paying down debt or going to savings, so now oil price falling is a net loss to the economy? Very hard to believe this, but that's the "word on the street".
Not like the price of gas actually stayed low for long, refineries tightened up and the price recovered significantly, even while oil remains down 50%. Oh well...
No, this is what happens exactly: "Recovery rates reflect distance to a tipping point in a living system" doi:10.1038/nature10723 [pdf:] http://vasilisdakos.info/wp-content/uploads/2012/01/veraart-... --> https://scholar.google.com/scholar?cites=1425709102799954480...
It's the observation that large and complex systems tend to fail suddenly and catastrophically.
http://cassandralegacy.blogspot.com/2014/12/fossil-fuels-are...
We see this in business as well: the falls of MCI-Worldcom, Enron, and the collapses of multiple financial bubbles follow this dynamic.
And people have been looking at the exhaustion of fossil fuels since the late 18th century. Yes, 18th, not 19th, with the first questions arising over how long Britain's coal would last.
In that time, the three big developments have been accessing petroleum (1859), commercial electricity generation (1870s), and nuclear fission (1935).
Petroleum replaced one fossil fuel with another (albeit a vastly more useful one). Electricity allowed for energy generation and use to be decoupled by thousands of miles, if necessary (transmission losses for long-distance electricity are quite low). And nuclear fission offered one possible out, though it's been a highly problematic option.
Wind and water power have been utilized by humans for centuries, if not longer. Solar power has progressed hugely in recent decades, but it's far more fundamentally limited than many people realize. Raw availability at Earth's surface is ~8,000x present human energy consumption. Factor in land area (30% of total), population and per-capita energy growth (roughly doubling energy demand even at a small fraction of present US energy use levels), total conversion efficiencies (you're left with about 1% of the available incident energy after PV conversion, capacity factor, spacing factors, and inverters), and we're down to a 20x surplus of solar energy as available capacity if you pave over the entire Earth's landmass.
You start rapidly arriving at the conclusion that either we're 1) not going to see levels of resource consumption comparable to those of the advanced world, or 2) not for projected populations, or both.
You can hypothesize alternatives, but most are assuming tremendous advances which have been exceptionally non-forthcoming.
I am MUCH more scared of a nuclear war breaking out over diminishing oil resources than I am about peaceful nuclear energy. That would be mankind's biggest and worst irony.
IMHO, it is bordering on insane to not consider peaceful nuclear energy as someone who is keen on saving the planet.
Sure, conserving, saving, making everything more efficient is fine and laudable. But one still has to support the energy needs of some 7e9 people.
https://www.reddit.com/r/dredmorbius/comments/2awjj2/thought...
The issues are multiple, many are not technical in nature (which means that the solutions are also not technical in nature).
Among them: risk, particularly systemic risk (not strictly limited to fallout or acute plant operational scenarios -- think Japan stressing its grid and industrial capacity following Fukushima), scale (Derek Abbott, "Is Nuclear Power Globally Scalable", IEEE), Proliferation, the 10,000 year perspective (language, cultures, institutions...), credibility.
The near-term prospects are also not great. For once-through conventional plants, there's about an 80 year fuel reserve, 6 if we go all-out nuclear. Advanced thorium designs aren't proven and are likely 20-25+ years from deployment (those are ambitious Chinese estimates). Controlled energy-positive fusion strikes me as a "never going to happen" option, and quite likely with even greater systemic risks than fission (fission reactions aren't that hard to make happen, fusion is very hard). I'm aware of claims that uranium can be extracted from seawater -- that strikes me as possibly but not hugely credible.
And nuclear fails (of and by itself) to address numerous other concerns, notably a liquid fuels replacement, or scarce minerals availability -- humans are running short of numerous resources, not just energy.
It's also worth noting that one of nuclear's harshest critics was one of its most effective engineers: US Navy Admiral Hyman G. Rickover, father of the nuclear navy.
http://www-pub.iaea.org/iaeameetings/cn216pn/Thursday/Sessio...
Pro: Cost data are provided (but without comparison to existing uranium mining costs). Quick check suggests that recent prices are on the order of $83/kg, vs, > $1,000/kg given in the study.
http://www.indexmundi.com/commodities/?commodity=uranium
If I'm reading that correctly they're delivering 1 kg of natural (non-enriched) uranium for about $1,000. The energy value delivered by that (at $0.09/kWh) is around 1,000x greater, which is a good thing.
Con:
This appears to be largely theoretical, there are no large-scale deployments, and questions of viability, durability, maintenance, recovery (of both filtration material and uranium from it), etc., isn't given. This is very immature technology (See: http://redd.it/24sdvf).
For building out infrastructures we'll be needing likely within a few decades, if not earlier, that's not much lead time.
I'd really like to see some field-trial data and comprehensive cost and durablility discussion. Marine environments are harsh.
I haven't tried to figure it out very carefully, but I imagine the cost estimates include production, deployment and collection of the harvester material, and that the degradation of the material is factored in (it wouldn't be all that surprising if the estimates treated it as disposable after 1 or few uses, because that is an easy way to make a conservative estimate).
Assume good faith.
As with risks, there are issues in how costs are computed in that for much of the present economy they're predicated on underpriced fossil fuels. Another longer discussion I don't have time for here, but it's something Charles A.F. Hall discusses in his analysis of the Cobb-Douglas production function.
One of my favorite books (and a book referenced by the link above) is "The Collapse of Complex Societies" by Joseph A Tainter, he gives a great study on the nature of collapse with lots of examples (note, some of the examples are a little dated and dubious like the Ik). He also gave a few presentations on this: https://www.youtube.com/watch?v=G0R09YzyuCI
I'd argue that a society that is actually better is not necessarily at all a more complex one. It is the one that reacts more favorably to change.
I'm not saying Mr. Tainter's work is worthless, it's just that I see it not that solid to consider it as a foundation to build upon.
For instance, many models have over-forcast surface warming and it hasn't happened. Probably because the deep oceans have acted as heat sinks. Not because the basic principal of the earth heating in response to CO2 is incorrect. That's what happens when you try to models complex systems with incomplete understanding... which was my original point.
Models have been "failing" for the past 20 years and they still provide useful information. No one in their right mind is questioning the conclusions. If anything the issue is whether we're facing an apocalypse by 2040 or if things are merely going be catastrophic by 2100.
And just to note: even though the above conclusions show that models have very wide margins, what is indisputable is that no one is claiming that things will get better or that we are not in for major catastrophe. If that isn't a useful model, I don't now what is.
Right... like the hundreds of thousands of refuges fleeing rising sea levels that was to happen by 2010. Pardon my scepticism. We don't know what is going to happen by 2040 and retrofitting models then saying "oh, now it's all figured out!" doesn't take future things you haven't figured out into account.
http://www.spiegel.de/international/world/feared-migration-h...
So in answer to your question.. no, I'm not speculating.
* This is basically one quote by one dude with dubious methodologies in a very novel field of research. If you had taken the time to understand a little bit more about the field instead of, you know, basing yourself entirely on the position of one academic, you would find that it's still a very contentious topic (see http://www.sciencedirect.com/science/article/pii/S0959378011...)
* The consensus is, however, that there are at least 25 million current displaced people from climate events. A lot of people consider that many of the current events of violence in the Middle East have been triggered by increases in prices of staple foods which have contributed towards destabilizing societies. While this is hard to quantify, there is a lot of research efforts towards underestanding that better.
* Absolutely none of what you quoted has any relation whatsoever to the predicting powers of the climate models, which work in considerably longer cycles but, again, have thus far been very useful at explaining the current changes in climate. They explain the melting of the Antactic ice shelves, the Greenland glaciers, the drying of California and the destabilization of the Jet Stream, leading to the current freak weather events in the East Coast and Europe. Again, this was all predicted 15 years ago to a disturbingly high degree of accuracy.
You're showing that you've really no understanding the depths of climate science. You can't say that the fact that there are a lot of unknowns in some parts of the models, or worse yet, the sociological responses to those known changes, invalidates the rest of our understanding. It sounds to me that your expectations of how models work is unrealistic or that it somehow discredits the established body of knowledge that we have.
What's important is that we understand very well how ecosystems are degrading, what are the most likely things to happen to the climate, and how the impacts will be felt. The fact that we can't yet quantify some things such as specific plant responses, particular microclimate changes, or mass-scale social behaviors (which, might I remind you, is still not understood by anyone on the world) is to be expected, and there are thousands of people currently working on filling us in on that knowledge.
Human caused climate events? Source?
Let's get out of the weeds back and back up to the original point. Well funded models have failed in their predictions. Many.
"there are thousands of people currently working on filling us in on that knowledge"
Great. I am in sure in time we will become much better at modeling complex systems. But I hope you understand my skepticism of this article.
Collapse of Antarctic ice shelves? Predicted. Ice cover of the Arctic? Surprisingly well predicted. Atmospheric CO2 ppm? Same thing.
Ok. You don't know what you are talking about do you?
That's my point about models. For such a complex system they are very difficult to make with any accuracy, and there are any number of factors that can throw them off. I see this same lack of dimensionality in this article. Has nothing to do with man affecting the climate which most reasonable people agree is likely occurring.
That's not it at all. I'm pretty sure human induced climate change is happening. Not a denialist. Unlike those for instance who refuse to acknowledge so many climate change models have completely failed to mirror reality.