20 February 2011

The Natural Chaos of Climate

Earth's climate is driven by ongoing cycles on many levels. When natural resonant cycles overlap -- at whatever level -- they can contribute to a chaotic pattern.
When the overlap starts, many higher-order resonances are also involved so fairly large areas of phase space have their tori destroyed and the ensuing chaos is "widespread" since trajectories are now free to wander between regions that previously were separated by nonresonant tori. _Wolfram
We begin with a pictorial overview of the natural components of climate -- sun, ocean, land, atmosphere, volcanoes, ice & snow, living organisms -- all of which appear to be subject to periodic cycling of various types, with potentially chaotic overlap.
Volcanoes can exert very strong influences on climate. It appears as if volcanic activity can occur at widely separated locations almost simultaneously, due to underlying geologic activity. Whether or not such tectonic movements occur "cyclically," the impact of such large scale volcanic activity can easily contribute to a naturally chaotic climate.
Natural ocean oscillations are thought to be driven by periodic solar variation, pictured below. These ocean oscillations such as El Nino (PDF) drive cycles of atmospheric heating and cooling, cycles of ice & snow, and strongly influence populations of living organisms worldwide.
Solar variation influences the size of the heliosphere, and determine the extent of galactic cosmic ray infiltration into the solar system and Earth's climatic system. This cyclic variation of cosmic ray bombardment on Earth's atsmosphere is thought to influence the amount of cloud formation in the atmosphere, which influences planetary ensolation and radiative heat balance.
The Milankovich orbital cycles occur with different periodicity in the tens of thousands of years, creating overlapping resonances with potential chaotic results on climate.
Another multi-thousand year orbital cycle which could easily influence global climate, is the slightly varying angle of Earth's solar orbit to the ecliptic. As the planet falls slightly below the plane and risis slightly above the plane of the ecliptic -- over tens of thousands of years -- the thickness of intervening dust between Earth and Sun varies. This periodically alters the ensolation of the Earth's system. Such cycles may have subtle effects, but in combination with other overlapping resonances, these overlapping effects may push the system into a chaotic result.
The image above illustrates the heliosphere, which can expand and contract according to the Sun's periodic activity. The fluctuating heliosphere is an important line of defense against galactic cosmic rays -- which are very likely to influence Earth's climate.
The Solar system is passing through an enormous interstellar cloud, which may or may not have an influence on climate. But it is a rather fascinating topic all the same.

Understanding natural chaos in climate is a crucial matter for policy-makers, who must determine the fate of US$trillions of future spending of tax dollars.

For science to provide the greatest benefit to those who fund it, it must focus upon genuine problems which need to be solved. As long as scientists have open, sceptical minds, they are more able to look at problems from varying perspectives -- from the close-in small picture, to the far-out big picture.

The last thing that tax-paying humans need is for their tax-paid scientists to fly off on a narrow tangent which ignores the larger picture. That would be a very wasteful tragedy.

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28 December 2010

Debt, Power, and Revolution: In Media Res

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We are living in interesting times, and any attempt to predict exactly how our world dynamics will resolve is doomed to fail. Here are some things that are happening around the world.

The Western World


The western world is looking at massive and growing debt combined with an enormous demographic transition. That particular combination points to a coming of potentially cataclysmic change in the everyday existence of most of the region's residents.
...once the fatal spiral begins, how can a state escape disaster? There are only eight options: (1) higher taxes; (2) less spending; (3) more growth; (4) more lenient interest rates; (5) worse inflation; (6) war; (7) external aid; or (8) default. All eight options have been used in the past, but only one of them is both plausible and desirable today: growth. A growing economy (which raises tax revenue) permits the absorption of debt and restores sustainable public finances. Then borrowing can resume—if it will encourage further growth. Responsible governments do not finance their everyday expenses by borrowing, and they keep their investments at a level they can repay.

History offers one final lesson. The power of sovereign states can foster a sense of impunity that encourages excessive debt. In the past, sovereign states have sometimes rid themselves of creditors by simply driving them out (as they did repeatedly with Europe’s Jews), by tormenting them, or by simply refusing to pay. When modern states borrow from a range of anonymous investors on global markets, sovereign immunity protects their assets against seizure—China cannot seize the White House as collateral for U.S. Treasury debt. But creditors can still negotiate, even with sovereign debtors. When a state loses the market’s confidence, the threat of a financial cutoff is a jolt back to reality. Just ask Greece, as its leaders scramble to reduce its public deficit as quickly as possible. The West needs to wake up now, shake off the yoke of public debt, and take the path of liberty. That path is long and difficult. It means balancing budgets and stabilizing the financial sector. But the great reward will be a return to confidence and growth—for those who put in the effort, and for those with the audacity to see it through. _Newsweek


Russia


The recent second conviction of former Yukos head Khodorkovsky opens a window on what may be one of many potentially fatal dynamics at the core of Russian power.
the real meaning of the Khodorkovsky case is that the authorities are weak, and scared. If the first trial of Khodorkovsky was a kind of perverse victory for Putin over the once-powerful oligarchs, the second trial shows that the Kremlin is afraid of showing what it sees as weakness. More, the ham-handedness of the charges themselves, and the heavy police presence and mass arrests at the trial today, betrays a dangerous amateurishness. Totalitarianism is scary. Incompetent totalitarianism is actually scarier.

For evidence of just how totalitarian – and now incompetent – Russia’s authorities are, look no further than the desperately eloquent scene in the courtroom during the trial, day in, day out. On one side sat the state prosecutors in their 1980s-style uniforms, surrounded by stacks of paper bulging out of Victorian-style ledgers. They mumbled their evidence in a monotone. At several points in the trial their accusations were so absurd that even the judge burst into laughter (my favorite prosecution malapropism – “The defendant is doing an excellent impression of being a normal person.”) On the other side sat the Khodorkovsky defense team, smartly dressed, each with a laptop. In a glass cage behind them, looking more at ease and in a strange way freer than anyone in the room, sat Khodorkovsky and Lebedev, taking turns to follow the documentary evidence on a large Mac screen set up in front of their box while the other made notes. It was as though two Russias were sparring in the courtroom, one mediocre, nervous and browbeaten, the other smart, modern and surprisingly relaxed. As Khodorkovsky himself said last year, a country that plunders its best companies and jails its brightest businessmen and instead puts its trust in the secret police and bureaucrats has its priorities seriously wrong.

The oligarchs were, unarguably, bad for Russia. They used their money to buy political power, and in the process corrupted the Duma, the press and the government. But the bureaucrat-kleptocrats who succeeded them are far worse. Khodorkovsky, in his years of incarceration in a Siberian labor camp, has transformed himself from a symbol of the hated oligarchy into a bellwether for a different sort of Russian rottenness. The oligarchs abused their money, the Kremlin now abuses power to silence opposition and to cover up the mass theft by the bureaucratic class of what has been estimated as a third of Russia’s GDP, annually. Medvedev is right that Russia is rotting from within; he’s even put his finger on exactly how. But the second conviction of Khodorkovsky shows that Medvedev, with all his brains and talk of reform, hasn’t made a whit of difference. _Newsweek

China


China is widely celebrated as the economic success story for the 21st century. The rapid growth of China's economic and military power suggests that the world may be approaching a change of hegemons. But is it possible that both China's military power, and its economic prospects, may be somewhat overstated?
When a government loses control of monetary policy, inflation follows. A few months ago, only the scariest "China bears" predicted 6% inflation for next year; now the People's Daily is admitting it may reach those levels "in some months."

The nonindependent People's Bank of China, staffed by reform-oriented technocrats, is being allowed to raise interest rates a few basis points. But allocating credit on the basis of its cost threatens the whole political economy. The state-owned companies have become accustomed to negative real interest rates. If the price of capital rises, many of the Communist Party elite will face a crunch. _WSJ
When one looks beneath China's Potemkin facade, one is apt to see enormous corruption, infrastructure overbuild, massive misallocation of resources, and a shockingly shoddy level of construction and impending collapse of poorly-built structure.

Emerging Markets


There is a lot of money to be made in emerging markets, if one understands some of the hazards involved.
...there is evidence of growing state involvement in both the economy and corporate sector across many emerging markets. This could hurt investors in a number of ways, most notably by governments forcing companies to prioritise social or geopolitical objectives over economic returns.

From an economic perspective, the main issue facing investors in emerging market equities is currently the degree of overheating, which is evident across a number of economies in the form of rising inflation and/or current account deficits.

Commodity price increases in particular have had a more inflationary impact on emerging than developed economies, because of their higher weightings in price indices and – more importantly – the narrower output gaps. _FT
There are more reasons for caution in the linked FT article.

One Ring to Bind Them, ... To Rule Them All

The United Nations' Intergovernmental Panel on Climate Change (IPCC) aims to write the rules and set the standards which the entire world will live and work under. The goals of the IPCC are ambitious: a massive transfer of resources from the developed world to the undeveloped world. As justification for this resource transfer, the IPCC claims to be saving the world from a cataclysmic collapse resulting from anthropogenic greenhouse gas-caused climate change. How good is the IPCC's record?
Remember all the media brouhaha about global warming causing hurricanes that commenced following the devastating U.S. 2004 season? Opportunities to capitalize on those disasters were certainly not lost on some U.N. Intergovernmental Panel on Climate Change officials. A special press conference called by IPCC spokesman Kevin Trenberth announced "Experts warn global warming likely to continue spurring more outbreaks of intense activity."

But there was a problem. Christopher Landsea, a top U.S. expert on the subject, repeatedly notified the IPCC that no research had been conducted to support that claim--not in the Atlantic basin, or in any other basin. After receiving no replies, he publicly resigned from all IPCC activities. And while the press conference received tumultuous global media coverage, Mother Nature didn't pay much attention. Subsequent hurricane seasons returned to average patterns noted historically over the past 150 years, before exhibiting recent record lows with no 2010 U.S. landfalls.

Much global warming alarm centers upon concerns that melting glaciers will cause a disastrous sea level rise. A globally viewed December 2005 BBC feature alarmingly reported that two massive glaciers in eastern Greenland, Kangderlugssuaq and Helheim, were melting, with water "racing to the sea." Commentators urgently warned that continued recession would be catastrophic.

Helheim's "erratic" behavior reported then was recently recounted again in a dramatic Nov. 13 New York Times article titled "As Glaciers Melt, Science Seeks Data on Rising Seas." Reporters somehow failed to notice that only 18 months later, and despite slightly warmer temperatures, the melting rate of both glaciers not only slowed down and stopped, but actually reversed. Satellite images revealed that by August 2006 Helheim had advanced beyond its 1933 boundary.

According to two separate NASA studies, one conducted by the Jet Propulsion Laboratory, and the other by the Langley Research Center, the oceans now appear to be heading into another natural periodic cooling phase within a typical 55- to 70-year dipolar warm/cool pattern. Although Greenland has recently been experiencing a slight warming trend, satellite measurements show that the ice cap has been accumulating snow growth at a rate of about 2.1 inches per year. Temperatures only recently began to exceed those of the 1930s and 1940s when many glaciers were probably smaller than now. (We can't be certain, because satellites didn't exist to measure them.)

A recent study conducted by U.S. and Dutch scientists that appeared in the journal Nature Geoscience concluded that previous estimates of Greenland and West Antarctica ice melt rate losses may have been exaggerated by double. Earlier projections apparently failed to account for rebounding changes in the Earth's crust following the last Ice Age (referred to as "glacial isostatic adjustment").

Nils-Axel Morner, head of the Paleogeophysics and Geodynamics department at Stockholm University in Sweden, argues that any concerns regarding rising sea levels are unfounded. _Forbes
The same abysmally misleading alarmism as was applied to glacier melting and sea level rise has been applied to "ocean acidification" and "polar bear extinction". Polar bears are thriving, and ocean pH continues within normal historical ranges -- except in specific third world harbour and river delta areas where dumping of waste will continue regardless of what the IPCC says or does.

It is time for thoughtful humans to understand that they must use their own judgment when evaluating the future prospects of nations, regions, and intergovernmental alliances. Everything is now in a state of flux, due to the collapse of leadership in much of the Anglosphere and in the EU. Debt and demography are combining and building to a coming chaos.

The forces of dissolution have been loosed, consequently. Temptation to revolution, secession, and violence on national & international scales will grow as economic and social conditions deteriorate.

The one counter-trend which can be glimpsed across Europe and the Anglosphere are the popular and grassroots movements -- still small and in minority status -- which are opposing the damning trends of debt and demography. It is possible that these groups will provide a mitigating force, at least in particular regions and countries.

Locate the islands of stability which will provide the safest harbours for you and your families. Hope for the best. Prepare for the worst.

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18 January 2010

A Burst of Consciousness: Out of Chaos


The line between mental chaos and a clear awareness is measured in milliseconds. If the brain can be distracted at just the right time, it will not be able to see what is in front of its nose. Researchers at the Weizman Institute of Science studied patients with implanted brain electrodes (in preparation for surgery). They were able to observe the sudden burst of brain activity in the higher visual brain centers signifying comprehension of an image.
The subjects looked at a computer screen, which briefly presented a 'target' image -- a face, house, or man-made object.

This image was followed by a 'mask' -- a meaningless picture for distraction -- at different time intervals after the target image had been presented. This allowed the experimenter to control the visibility of the images -- the patients sometimes recognized the targets and sometimes failed to do so. By comparing the electrode recordings to the patients' reports of whether they had correctly recognized the image or not, the scientists were able to pinpoint when, where and what was happening in the brain as transitions in perceptual awareness took place.

Malach: 'We found that there was a rapid burst of neural activity occurring in the high-order visual centers of the brain -- centers that are sensitive to entire images of objects, such as faces -- whenever patients had correctly recognized the target image.' The scientists also found that the transition from not seeing to seeing happens abruptly. Fisch: 'When the mask was presented too soon after the target image, it 'killed' the visual input signals, resulting in the patients being unable to recognize the object. The patients suddenly became consciously aware of the target image at a clear threshold, suggesting that the brain needs a specific amount of time to process the input signals in order for conscious perceptual awareness to be 'ignited.'' _SD

Consciousness is a time-critical process. The time constraints of conscious awareness depend upon electro-physiological activity across the cortical and sub-cortical brain. These electro-physiological activities are in turn dependent upon lower level physiological and biochemical activities in cerebral neurons, glia, and vasculature. But there is a great deal of subtle detail hidden out of sight, for now. It will require our brightest scientists to tease out the complexity from the chaos.

Earlier research by same researchers using fMRI to identify neuronal correlates of conscious activity

Global Neuronal Workspace Theory of Consciousness

PDF Look at how prefrontal activity can be temporarily "shut down" by perceptual processes PDF

PDF A glimpse at active unconscious assistance processes in conscious reading of handwritten materials PDF

300 milliseconds to conscious awareness

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