segunda-feira, 23 de Novembro de 2009
Um pequeno apontamento de história
Não conhecia este episódio, mas sabia das críticas ao modo como Eisenhower tinha conduzido a ofensiva alianda em 1944, e que teria contribuído para o adiamento do fim da guerra para o ano seguinte: ele não estava, efectivamente, na mesma divisão de outros grandes generais da IIGG (muito mais do lado dos alemães do que do lado dos aliados):
Op-Ed Contributor - How World War II Wasn’t Won - NYTimes.com: "Sixty-five years ago, in November 1944, the war in Europe was at a stalemate. A resurgent Wehrmacht had halted the Allied armies along Germany’s borders after its headlong retreat across northern France following D-Day. From Holland to France, the front was static — yet thousands of Allied soldiers continued to die in futile battles to reach the Rhine River.
One Allied army, however, was still on the move. The Sixth Army Group reached the Rhine at Strasbourg, France, on Nov. 24, and its commander, Lt. Gen. Jacob L. Devers, looked across its muddy waters into Germany. His force, made up of the United States Seventh and French First Armies, 350,000 men, had landed Aug. 15 near Marseille — an invasion largely overlooked by history but regarded at the time as “the second D-Day” — and advanced through southern France to Strasbourg. No other Allied army had yet reached the Rhine, not even hard-charging George Patton’s.[...]"
E continua ...
As figuras acima foram retiradas do artigo de James Hansen, referenciado por último (muito bom - pelo menos esse deviam ler).
- Permafrost thaw threatens Russia oil and gas complex: study: "Thawing permafrost caused by global warming is costing Russian energy firms billions of dollars annually in damage control and shrinking Russia's territory, Greenpeace warned in a new study Friday."
- Climate change sceptics and lobbyists put world at risk, says top adviser | Environment | The Guardian: "Climate change sceptics and fossil fuel companies that have lobbied against action on greenhouse gas emissions have squandered the world's chance to avoid dangerous global warming, a key adviser to the government has said."
- Climate Feedback: Is east Antarctic ice melting?:
"The ice sheet covering east Antarctica may have been melting since
2006, according to new research, contradicting previous suggestions
that it has remained stable or even grown in mass."
- Tipping Points: Melting Ice, Rising Oceans | SolveClimate.com:
"Global warming is a time bomb.
There may still be time to defuse it, but that requires policy-makers
to take the actions that are needed, not the ineffectual actions they
are discussing.
Despite the publicity that global warming has received, there is a
large gap between what is understood by the relevant scientific
community, and what is known by the people who need to know, the public
and policymakers. Global warming is small compared to day-to-day
weather fluctuations, so it is hard for people to recognize that we
have a crisis – but we do.
The climate system has great inertia, caused, e.g., by the
4-kilometer-deep ocean and the thick ice sheets on Antarctica and
Greenland, which have only partly responded to the human-made changes
of atmospheric composition. That inertia is not our friend. It is a
Trojan horse. By the time the public notices that change is underway
the momentum of the climate system may be sufficient to guarantee much
larger changes. The climate system can pass tipping points, such that
large change continues out of our control.
The bad news is that we have already passed into a dangerous range of
atmospheric carbon dioxide.
The good news is that if we act smart and promptly it is still feasible
to achieve a safe level of atmospheric gases, and the actions needed to
achieve that would have multiple benefits in addition to climate
stability.
There are several climate tipping points of special concern.[...]"
Astronomy Picture of the Day - 23 de Novembro: Adeus à Terra
Explanation: Goodbye Earth. Earlier this month, ESA's interplanetary Rosetta spacecraft zoomed past the Earth on its way back across the Solar System. Pictured above, Earth showed a bright crescent phase featuring the South Pole to the passing rocket ship. Launched from Earth in 2004, Rosetta used the gravity of the Earth to help propel it out past Mars and toward a 2014 rendezvous with Comet Churyumov-Gerasimenko. Last year, the robot spacecraft passed asteroid 2867 Steins, and next year it is scheduled to pass enigmatic asteroid 21 Lutetia. If all goes well, Rosetta will release a probe that will land on the 15-km diameter comet in 2014."
Astronomy Picture of the Day (Archive, 2009 November 23)
Para nos preocuparmo-nos com os EUA (e com esta Administração)
Qualquer dos três artigos devem ser lidos na totalidade. No entanto, se Obama conseguir fazer com que a legislação sobre a saúde e a sobre questões energéticas e ambientais passem, o quadro tenderá a ficar menos sombrio.
[...] But while our culture of imagination is still vibrant, the other critical factor that still differentiates countries today — and is not a commodity — is good governance, which can harness creativity. And that we may be losing. I am talking about the ability of a society’s leaders to think long term, address their problems with the optimal legislation and attract capable people into government. What I increasingly fear today is that America is only able to produce “suboptimal” responses to its biggest problems — education, debt, financial regulation, health care, energy and environment. [...]
The standard answer is that we need better leaders. The real answer is that we need better citizens. We need citizens who will convey to their leaders that they are ready to sacrifice, even pay, yes, higher taxes, and will not punish politicians who ask them to do the hard things. Otherwise, folks, we’re in trouble. A great power that can only produce suboptimal responses to its biggest challenges will, in time, fade from being a great power — no matter how much imagination it generates.
- Op-Ed Columnist - The Phantom Menace - NYTimes.com: "A funny thing happened on the way to a new New Deal. A year ago, the only thing we had to fear was fear itself; today, the reigning doctrine in Washington appears to be “Be afraid. Be very afraid.” What happened? To be sure, “centrists” in the Senate have hobbled efforts to rescue the economy. But the evidence suggests that in addition to facing political opposition, President Obama and his inner circle have been intimidated by scare stories from Wall Street. Consider the contrast between what Mr. Obama’s advisers were saying on the eve of his inauguration, and what he himself is saying now."
- Economist's View: "America's Broken Politics" Jeffrey Sachs says government is broken:
America's broken politics, by Jeff Sachs, Project Syndicate: ...The difficulties that Barack Obama is having in passing his basic program, whether in healthcare, climate change, or financial reform, are hard to understand at first glance.[...] Part of the cause for these huge divergences ... is that America is an increasingly polarized society. [...] American politics has become venomous as the belief has grown, especially on the vocal far right, that government policy is a "zero-sum" struggle between different social groups and politics. [...] Moreover, the political process itself is broken. [...] An equally deep crisis stems from the role of big money in politics.[...] Many observers regard the lobbying process as a kind of legalized corruption...[...] Finally, policy paralysis around the US federal budget may be playing the biggest role of all in America's incipient governance crisis. The US public is rabidly opposed to paying higher taxes, yet the trend level of taxation (at about 18% of national income) is not sufficient to pay for the core functions of government. ...[...]"
Chocolate preto e os mistérios de algumas decisões empresariais
Aquilo que é dito na nota do NYT referida ao fim deixa-ne perplexo, a mim, enquanto economista e apreciador de chocolate puro (com o mínimo possível de açúcar). O que poderá justificar que se abastarde um produto de qualidade cujo mercado está em crescimento? Mistérios do capitalismo norte-americano.
Vejam que vale a pena: Op-Ed Contributor - My Chocolate Meltdown - NYTimes.com
Idiotices
Estas declarações são uma tontice. Se não houver sector pesqueiro dentro de alguns anos é porque o peixe desapareceu devido a uma exploração desmesurada dos pesqueiros, e à degradação ambiental dos mares. Nas pescas a questão da eficácia e eficiência, e longo da sua rendibilidade, está subordinada a uma exploração sustentada dos recursos. Os economistas, para além dos contributos para a mera gestão empresarial, podem aí ser úteis - mas não era disso que a senhora falava - porque podem determinar o que será uma exploração economica sustentável daqueles recursos: - como deveria ser bom de ver, e está demonstrado na literatura, esse nível de exploração economicamente sustentado, fica aquém do nível de exploração biológica sustentável.
Pescas O sector tem de ter mais economistas para se tornar rentável Cármen Fraga - Expresso.pt: "Porto, 22 Nov (Lusa) - A presidente da Comissão de Pescas do Parlamento Europeu, Cármen Fraga, defende que as pescas têm de ter mais economistas para serem rentáveis, caso contrário, 'dentro de uns anos não há sector pesqueiro'.
'A pesca tem de ser tratada como uma actividade económica em que se fala de eficácia e eficiência. Os preços do peixe continuam a ser os mesmos de há 20 anos, enquanto os custos de produção não pararam de aumentar', disse à Lusa Cármen Fraga, à margem do seminário 'A reforma da Política Comum de Pesca'.
Em entrevista à Lusa, a política espanhola defendeu que 'a pesca tem de ter mais economistas, porque tem de se começar a falar de rentabilidade'."
Leituras sobre a conjuntura económica e economia (III)
- Stabilities and instabilities in the macroeconomy | vox - Research-based policy analysis and commentary from leading economists Economics lacks an anchored understanding of the nature of the reality that economics is supposed to illuminate. This column, which introduces a new CEPR Policy Insight, says that instability of leverage, connectivity, and the potential instability of the price level have all been neglected in stable-with-frictions macro theory. Technical innovations will not bring real progress as long as “stability-with-frictions” remains the ruling paradigm. Meanwhile, governments are not prepared to face another crisis.
- Economist's View: "What if a Recovery Is All in Your Head?": "Robert Shiller wonders if the recovery is based upon a self-fulfilling prophecy: What if a Recovery Is All in Your Head?
- Cozido à portuguesa | Pedro Carvalho | Económico Diz-se que um optimista é um pessimista mal informado. Nos últimos dias, temos sido bombardeados com indicadores macro capazes de desalentar o mais inabalável dos optimistas que esteja minimamente informado sobre o actual estado da economia nacional. A Comissão Europeia veio dizer que Portugal voltará a divergir da zona euro em 2010 e 2011 e a OCDE diz que a nossa economia tem um potencial de crescimento de apenas 1% entre 2012 e 2017, o terceiro pior registo entre os 24 países analisados pela organização [...] E qual é a receita para contrariar um crescimento anémico, um desemprego galopante e contas públicas descontroladas? [...] Há receitas para todos os gostos, mas os ingredientes são, mais ou menos, os mesmos. [...] não podemos dar a volta à crise sem reformas estruturais, sem inovação, educação, conhecimento, novas tecnologias, produtividade e contas públicas equilibradas. Cozinhando assim a retoma, com uma visão integrada, vamos criar condições para gerar mais riqueza e, se a Lei de Okun estiver certa, a economia voltará a criar empregos de forma sustentável. Caso contrário [...]"
O financiamento das despesas de saúde é um problema de todos, e vai piorar
The Health Care Challenge: Not Just a U.S. Problem « iMFdirect: "Health spending in OECD countries increased from 4½ percent of GDP in 1960 to 12½ percent in 2007 (see Figure 1). What accounts for this dramatic increase? Income growth, insurance, demographics, and technological change all contributed, but the latter was the key driver. Public spending for health care also increased sharply (by 5½ percentage points of GDP) during this period (see Figure 2)."
domingo, 22 de Novembro de 2009
E continua ... Sem comentário
MEP clashes with bishop over 'climate alarmism'! Climate Ark
"A controversial Conservative Euro MP has careered into a clash with a bishop over his claim that the Church of England has "abandoned religion" to preach the gospel of climate change. Roger Helmer, Tory MEP for the East Midlands, has infuriated the Church with the accusation that it is more interested in "climate alarmism" than its traditional teachings."
O que se vê a infra-vermelho
Ring of Stars in Centaurus A Uncovered | Universe Today: "Centaurus A (NGC 5128) is one of the most studied objects in the Southern sky, because it is the giant elliptical galaxy with the closest proximity to our own Milky Way. It lies 11 million light years away from the Milky Way, and is believe to have merged with another gaseous galaxy about 200 to 700 million years ago. The result of this galactic mashup: the birth of hundreds of thousands of stars in a kiloparsec-spanning ring near the core."
E continua ... Chuva e desvio de e-mails
___________
PS (I): Sobre os e-mails e outros assuntos: Open Left:: Climate change news on 3 fronts--denialism, nuclear and coal-shows complexity of struggle
PS (II): Sobre o mesmo assunto:
In the trenches on climate change, hostility among foes:
"Electronic files that were stolen from a prominent climate research
center and made public last week provide a rare glimpse into the
behind-the-scenes battle to shape the public perception of global
warming.
While few U.S. politicians bother to question whether humans are
changing the world's climate -- nearly three years ago the U.N.
Intergovernmental Panel on Climate Change concluded the evidence was
unequivocal -- public debate persists. And the newly disclosed private
exchanges among climate scientists at Britain's Climate Research Unit
of the University of East Anglia reveal an intellectual circle that
appears to feel very much under attack, and eager to punish its
enemies.
In one e-mail, the center's director, Phil Jones, writes Pennsylvania
State University's Michael E. Mann and questions whether the work of
academics that question the link between human activities and global
warming deserve to make it into the prestigious IPCC report, which
represents the global consensus view on climate science."
_______
PS (23.11.09): E ainda este: Newtongate: The final nail in the coffin of Renaissance and Enlightenment “thinking” « Climate Progress: "The blog Carbon Fixated has a must-read post that provides some perspective on the scandal du jour:"
PS (II): E mais este:
The theft and web publication by climate change deniers of private emails from the University of East Anglia's Climatic Research Unit is an extremely worrying development in the tortured politics of global warming.
[...] the deniers are
now declaring war on the scientists themselves. Like the creationists they unconsciously mimic, they make no distinction between the political and the scientific sphere – it is open season in both.
And the strategy is simple. Given that scientists are one of society's most trusted groups
(unlike journalists or politicians), the climate denial movement has
begun a battle to undermine public trust in climate scientists
themselves. No more will the legions of anonymous researchers who
collect and interpret data from meteorological stations, satellites and
ice cores be considered above the fray – they now run the risk of
personal attacks, exposure of their private lives and vilification.
[...]
None of
this would matter if the public weren't fooled. But they are. Polls
show climate "scepticism" is rising, perhaps even to a majority
position, on both sides of the Atlantic. Presumably public trust in climate change
scientists is falling commensurately. This will in turn undermine
consensus in mitigating climate change – which is of course the very
intention of the deniers in the first place.
Some of the scientists whose private emails have been exposed write for the blog RealClimate,
where they argue that the revealed correspondence shows "no evidence of
any worldwide conspiracy ... no admission that global warming is a
hoax, no evidence of the falsifying of data" and so on. But as George Marshall, a writer on climate change who specialises in the psychology of denial on the issue, puts it: "This is hardly the point. This is an orchestrated smear campaign and does not require balance or context."
Não sei se se aplica ao caso dos Açores
WHOI : Oceanus : The Promise and Perils of Seafloor Mining "Can minerals be extracted from the seafloor without environmental impacts?"
Leituras sobre a conjuntura económica e economia (II)
- RGE - Is King Euro Naked? Europeans may find several historical and theoretical reasons why a political government for the euro area would be desirable. But after the global crisis there are technical reasons why it is more than desirable. That conclusion is a necessity in light of three increasingly important aspects of current monetary developments in Europe: (1) the lack of an exchange rate policy; (2) the absence of a European fiscal authority guaranteeing the stability of sovereign bonds; and (3) the collusive relationship developing between the European Central Bank (ECB), the banks, and the national governments hiding the costs to the taxpayers.
- RGE - Post-Crisis: What Should Be the Goal of a Fiscal Exit Strategy? One obvious fallout of the global financial crisis is a huge deterioration in fiscal conditions, particularly in advanced countries. [...] It really boils down to “plain vanilla” deficits—revenue losses from the recession, fiscal stimulus, and some underlying spending increases that would have occurred even without a recession. [...]The first step is to stabilize the debt-to-GDP ratio.[...] But is stabilizing debt ratios at their post-crisis level enough?
- RGE - Balancing Fiscal Support with Fiscal Solvency As I noted in my last post, government deficits in many countries—particularly in advanced countries—have jumped dramatically in the wake of the global crisis, and government debt has reached levels that could jeopardize longer term macroeconomic stability and growth. [...] The challenge for policymakers is to formulate strategies for fiscal solvency—what we often call “exit strategies”—and communicate these strategies to the general public.[...] Are there actions that governments can undertake today to enhance their credibility without negatively affecting aggregate demand?
- RGE - Just How Much of a Eurozone Rebound Really Was There in Q3? [...] So evidently we are out of recession, but are we out of the woods yet?
- RGE - ECB Shows the Exit: Timing and Signposts [...] the central bank is increasingly feeling the need to regain control of market interest rates via a progressive mopping up of excess liquidity. [...] As a result, ECB figures confirm that banks’ net asset purchases of government bonds more than tripled and now stand at EUR 150bn: banks enjoyed a positive carry which was much needed for their impaired bottom lines, and governments were able to finance the heaviest supply in history which allowed them to undertake a significant (though not dramatic) fiscal easing. Something for everyone. Faced with a stabilizing macro and financial picture, the question is: what’s next?
- McKinsey & Company - Imbalances that strain the eurozone: "[...] Much less noticed has been the steady rise in current account deficits and surpluses among eurozone countries since the adoption of the common currency in 1999. [...] Although the eurozone's collective current account has seen only modest deficits and surpluses, the sum of the absolute value of its current deficits and surpluses rose at a 16.3 percent annual rate after 2000—more than twice as fast as the 6.7 percent annual pace of increase in the 1990s. To put this in perspective, the U.S. current account deficit grew by 7 percent per year during this period, while China's surplus grew at a 43 percent annual rate.
[...] Meanwhile, Greece, Italy, Portugal, and Spain have run growing current
account deficits since 2000, both with other eurozone countries and
with the rest of the world. Spain's overall current account deficit
reached $154 billion in 2008, the largest of any country in the
eurozone, and equal to roughly 10 percent of GDP—much bigger
proportionally than the U.S. deficit at its peak. Greece and Portugal
had even bigger current account deficits relative to GDP in 2008.
[...] In deficit countries, foreign capital flows fell sharply in 2008, by
some 28 percent in Spain and 30 percent in Portugal, for example,
contributing to deep recessions. Today, after the wage and price
run—ups that occurred in the deficit countries during the boom, their
exports are less competitive on world markets than those of other
eurozone countries. [...]
[...] In addition, running a continued current account deficit adds to the
national debt, whether it is in the form of government debt (as in
Italy) or private debt (as in Spain, Portugal, and Greece). And at some
point, these debts must be repaid. Although the use of a common
currency removes the risk of a sudden currency depreciation causing the
value of foreign debt to soar, the repayment will still represent a
transfer of wealth and income out of the country to investors
elsewhere.
[...] It will also require adopting policies to promote higher
productivity growth in the deficit countries of Southern Europe, which
will raise incomes and create more competitive exports. [...]"
- arquivo: Ausência de caminho?| Pedro Adão e Silva [...] Moral da história: sem o pacote de estímulos, a recessão teria sido bem mais profunda e o desemprego ainda pior. Foi quebrado o ciclo vicioso que nos ameaçava, mas os riscos estão longe de terem sido eliminados. Que fazer agora? Estamos perante um dilema dramático: não temos recursos para manter a economia alimentada pelo consumo público, mas não há condições para não o fazer.
Há três caminhos possíveis, todos muito exíguos: diminuir a despesa
(sendo que a que resta é tremendamente rígida); aumentar impostos (não
se vê quais) e estimular a economia, continuando a aumentar a despesa.
Provavelmente, é preciso fazer de tudo um pouco. Mas também é
necessário que nos libertemos dos que, enquanto se entretêm a repetir
que o cenário é negro, não conseguem vislumbrar nenhum caminho.
Publicada por
José Matias
em
21:49
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comentários
Etiquetas: conjuntura económica, europa-economia-países, país
sábado, 21 de Novembro de 2009
Ganhos financeiros da eficiência energética - sinais promissores do mercado
E continua ...
- Greenland ice loss behind a sixth of sea-level rise | Climate Ark: "Greenland lost 1500 cubic kilometres of ice between 2000 and 2008, making it responsible for one-sixth of global sea-level rise. Even worse, there are signs that the rate of ice loss is increasing."
- Permafrost thaw threatens Russia oil and gas complex: study| Climate Ark:
"Thawing permafrost caused by global warming is costing Russian energy
firms billions of dollars annually in damage control and shrinking
Russia's territory, Greenpeace warned in a new study Friday.
According to the report by the environmental watchdog, up to 55 billion
roubles (1.9 billion dollars) a year is spent on repairs to
infrastructure and pipelines damaged by changes in the permafrost in
western Siberia.
'For Russia, the biggest threat of the permafrost melt is to oil and
gas company infrastructure,' said Vladimir Chuprov, who heads
Greenpeace's energy programme in Russia.
He said that the group had consulted with experts at gas giant Gazprom
in writing its report, which detailed the destruction to infrastructure
such as pipelines caused by rising temperatures and resulting melt
water.
'These are people who see what is happening and are already feeling the
economic consequences of it,' he told reporters in Moscow."
Recomendação forte de leitura
"O Espectáculo da Vida - a prova da evolução", Richard Dawkins, Casa das Letras, é um livro magnífico de divulgação e pedagogia científica. Um dos aspectos mais sinistros dos tempos que correm é a dimensão significativa do combate dos fundamentalistas (e dos ignorantes de todo o tipo) à ciência, e em particular à teoria [na acepção de conjunto de explicações comprovadas e validadas científicamente, e não na acepção de hipótese] da evolução pelo mecanismo da selecção natural - este livro de Dawkins lembra nomeadamente isso.
Abaixo: um exemplo (mais um) da actuação recente da evolução por selecção natural :
'Gene change in cannibals reveals evolution in action ' by Andy Coghlan - NewScientist - RichardDawkins.net:
"It's a snapshot of human evolution in progress. A genetic mutation
protecting against kuru – a brain disease passed on by eating human
brains – only emerged and spread in the last 200 years.
When members of the Fore people in Papua New Guinea died, others would
eat the dead person's brain during funeral rituals as a mark of
respect. Kuru passed on in this way killed at least 2500 Fore in the
20th century until the cause was identified in the late 1950s and the
practice halted.
Identification of kuru and how it was spread helped researchers
identify how BSE – mad cow disease – spread through the feeding of
infected cattle brains to other animals, and how this eventually led to
variant Creutzfeldt-Jakob disease (vCJD), which has killed 166 people
so far in the UK.
Simon Mead of the British prion research centre at University College
London says the discovery of an 'anti-kuru' gene is the most clear-cut
evidence yet of human evolution in action."
Chavez quer ressuscitar a Contabilidade Nacional tal como era praticada, e teorizada, nos países socialistas [como era mesmo denominada?], ou trata-se de mais um episódio da incomodidade dos políticos (de alguns) com o PIB: "mata-se o mensageiro que traz as más notícias"
Venezuela’s Chavez Slams GDP Methodology After Third-Quarter Contraction - Real Time Economics - WSJ: "Venezuelan President Hugo Chavez said Wednesday he plans to come up with a new, socialist-friendly way of measuring economic growth, one day after gross domestic product data indicated his country is in recession.
Hugo Chavez takes aim at statistics. (AFP/Getty Images)
Oil-rich Venezuela’s economy shrank 4.5% in the third quarter, the country’s central bank reported Tuesday. This comes after the economy shrank 2.4% in the second quarter.
“We simply can’t permit that they continue calculating GDP with the old capitalist method,” President Chavez said in a televised speech before members of his socialist party. “It’s harmful.”"
Apesar de tudo é pior do que o ataque às sondagens.
O aumento da capacidade produtiva da China justifica-se?
TheMoneyIllusion » Say’s Law in China "
"Is China producing too much of everything? Say’s Law says that’s
impossible. Then how about too much housing? Perhaps, but here are
some relevant estimates (or I should say guesstimates, as I had trouble
finding data)"
Teoria económica da Mafia
Creative contract enforcement in Italy – Chris Blattman: "[...]
The book [...] essentially advances an economic theory of the mafia: they are entrepreneurs and firms who collude and compete; the good they sell is not violence, or stolen property, but protection.
That is, they enforce contracts in places the government can’t or won’t, like illegal and illicit markets, or areas where the police and courts are weak. They actively compete with the police to provide protection, and this good is in high demand. Every transaction done under the table cannot seek protection from the courts, and the mafia step naturally into this gap.
Their name is their trademark, and they prevent new entry by force but also by complex social rules and ethnic identity.
Naturally the mafia also help create demand for the product, through intimidation and threat, but the real demand for services comes from government regulation or government failure. Every tariff or ban or rule creates an incentive for a black market, and the market evolves contract enforcement mechanisms where the state does not."
Leituras sobre a conjuntura económica e economia (I)
- Cenário de choque divulgado pela Société Générale - Expresso.pt: "Não sendo uma previsão, mas 'uma exploração de perigos', o panorama para os próximos três a quatro anos nos países desenvolvidos, alvitrado pelo relatório negro de 68 páginas divulgado ontem pela Société Générale (SG), aponta para crescimento 'anémico' à japonesa, regresso à ortodoxia orçamental, riscos de inflação ou de estagflação em 2012 [...], e de oportunidades em algumas commodities que denotam tendência altista. A questão crítica, segundo o relatório de choque, poderia resumir-se à expressão de campanha política: É a dívida (pública), estúpido! Intitulado 'Worst-Case Debt Scenario', com a assinatura do analista de estratégia Daniel Fermon [...]
- "Where will we be in one year? | Free exchange | Economist.com: "The good news is, the OECD's latest economic forecast revises up sharply projected economic growth for member nations. The bad news is, that still leaves OECD economies in pretty dismal shape. [...] And as you can see, things will like be as bad or worse in the euro zone, particularly around the periphery. So where will we be in one year? Well, if things continue on in this manner, the developed world will be concluding a second consecutive year of near-record high unemployment, and entering a third. The international economic institutional architecture developed in the wake of the Second World War has simply not been tested under these circumstances."
- Top-down versus bottom-up macroeconomics | vox - Research-based policy analysis and commentary from leading economists: "Hayek argued that no individual is capable of understanding the full complexity of a market system. Instead, individuals only understand small bits of the total information. The main function of markets consists in aggregating this diverse information. If there were individuals capable of understanding the whole picture, we would not need markets. This was in fact Hayek’s criticism of the “socialist” economists who took the view that the central planner understood the whole picture and would therefore be able to compute the whole set of optimal prices, making the market system superfluous.
Rational
expectations models as intellectual heirs of central planning [?]
My contention is that the rational expectations models are the
intellectual heirs of these central-planning models. Not in the sense
that individuals in these rational expectations models aim at planning
the whole, but
in the sense that, as the central planner, they understand the whole
picture. These individuals use this superior information to obtain the
“optimum optimorum” for their own private welfare. In this sense, they are top-down models."
- Balancing Fiscal Support with Fiscal Solvency « iMFdirect: "As I noted in my last post, government deficits in many countries—particularly in advanced countries—have jumped dramatically in the wake of the global crisis, and government debt has reached levels that could jeopardize longer term macroeconomic stability and growth. These countries will need to tighten fiscal policy significantly sometime down the road, especially where demographic trends are pushing up health and pension spending. But fiscal deficits cannot be lowered in the immediate future. For the time being, fiscal (and monetary) policies must continue to support economic activity. The economic recovery is uneven and could be threatened by any premature withdrawal of policy support. Private demand is still unable to stand on its own two feet. This gives rise to a policy conundrum. How can we reconcile the competing requirements of short-term support for the economy and longer term fiscal solvency?"
sexta-feira, 20 de Novembro de 2009
Açores e renováveis: muito bem!
:ILHAS: Eficiência energética:
"[...] em Outubro deste ano, a ilha das Flores esteve 12 dias a funcionar exclusivamente com recurso a energias renováveis, numa situação inédita a nível nacional e que nos deixa a todos, acredito, orgulhosos. As Flores, a par com São Miguel, são as ilhas dos Açores onde a taxa de penetração das renováveis tem, neste momento, maior incidência, se bem que existam características endógenas favoráveis para que, a curto prazo, a contribuição das energias renováveis na produção de energia eléctrica no arquipélago passe de 28% para 75%, até 2018."
Isso será excelente, mas fico com dúvidas sobre os números: por exemplo, isso acontecerá independentemente do comportamento da procura de electricidade ao longo período até 2018?
Deverão ler a nota do :Ilhas na totalidade.
E continua ... e se o mar satura?
Oceans' uptake of manmade carbon may be slowing:
"The oceans play a key role in regulating climate, absorbing more than a quarter of the carbon dioxide that humans put into the air. Now, the first year-by-year accounting of this mechanism during the industrial era suggests the oceans are struggling to keep up with rising emissions -- a finding with potentially wide implications for future climate. The study appears in this week's issue of the journal Nature."
"The oceans play a key role in regulating climate, absorbing more than a quarter of the carbon dioxide that humans put into the air. Now, the first year-by-year accounting of this mechanism during the industrial era suggests the oceans are struggling to keep up with rising emissions -- a finding with potentially wide implications for future climate. The study appears in this week's issue of the journal Nature."
A Lua e a água - como já disse, e para variar, água na Lua é uma excelente notícia
Op-Ed Contributor - The Wet Side of the Moon - NYTimes.com:
"Picture a habitat atop a hill in warm sunlight on the edge of a crater near the south pole of the Moon. There are metal ores in the rocks nearby and ice in the shadows of the crater below. Solar arrays are set up on the regolith that covers the Moon’s surface. Humans live in sealed, cave-like lava tubes, protected from solar flares and sustained by large surface greenhouses. Imagine the Moon as the first self-sustainable human settlement away from Earth and a high-speed transportation hub for the solar system.
We can finally begin to think seriously about establishing such a self-sufficient home on the Moon because last week, NASA announced that it had discovered large quantities of water there.
While we have known for decades that the Moon had all the raw chemicals necessary for sustaining life, we believed they were trapped in rocks and thus difficult to extract. The discovery of plentiful lunar water is of tremendous importance to humanity and our long-term survival."
E continua ... incêndios na Austrália, mas podem suceder, também, em Portugal
Australia: Heatwave 'connected to climate change' Climate Ark:
"There's a 'high chance' a heatwave sweeping Australia's southern and eastern states is related to climate change, a scientist at the Bureau of Meteorology says. [...] This (the heatwave) is a truly extreme event,' Dr Stern says. 'Many places have established all-time records for the first half of November.' The Meteorologist says the heatwave is caused by the absense of southerly wind flows. 'There is considerable variability in the climate and we do have in the background [that] the globe has warmed up by nearly a degree celcius over the last 50 years, so temperatures are higher now than they were then."
"There's a 'high chance' a heatwave sweeping Australia's southern and eastern states is related to climate change, a scientist at the Bureau of Meteorology says. [...] This (the heatwave) is a truly extreme event,' Dr Stern says. 'Many places have established all-time records for the first half of November.' The Meteorologist says the heatwave is caused by the absense of southerly wind flows. 'There is considerable variability in the climate and we do have in the background [that] the globe has warmed up by nearly a degree celcius over the last 50 years, so temperatures are higher now than they were then."
E pode suceder em Portugal: Incêndios Condições extremas ocorridas na Austrália podem acontecer em Portugal investigador - Expresso.pt
Democracia, incentivos e desenvolvimento
World Poverty Map - Creating a World Without Poverty - Esquire: "What Makes a Nation Rich? One Economist's Big Answer:
Say you're a world leader and you want your country's economy to prosper. According to this Clark Medal winner from MIT, there's a simple solution: start with free elections."
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PS (21.11.09): Sobre o mesmo tópico: Do elections in developing countries improve economic policy? | vox - Research-based policy analysis and commentary from leading economists: "There is some evidence that democracies enjoy better economic growth. How do elections, a core component of democracy, impact economic policy? This says that free and fair elections in developing countries improve economic policy by disciplining governments. But infrequent or uncompetitive elections may actually make things worse."
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PS (21.11.09): Sobre o mesmo tópico: Do elections in developing countries improve economic policy? | vox - Research-based policy analysis and commentary from leading economists: "There is some evidence that democracies enjoy better economic growth. How do elections, a core component of democracy, impact economic policy? This says that free and fair elections in developing countries improve economic policy by disciplining governments. But infrequent or uncompetitive elections may actually make things worse."
Mais um "Pico": "Pico de solo arável"
"At the Carbon Farming conference in Australia earlier this month, speakers pointed to a problem that has worried environmentalists for about a decade: peak soil.
China is losing soil 57 times faster than nature can replace it, [...]. In the United States, conservation practices have helped reduce soil loss, but top soil is still being eroded 10 times faster than it can be replaced, according to the National Academy of Sciences.
This is a concern, not only because it limits the amount of food-producing land, but also because soil and the crops that grow in it can help sequester carbon, so the more of it we lose, the more carbon we leave out in the atmosphere."
E existe um problema semelhante nos Açores, embora não saiba do seu grau de virulência - O Professor Farrica referiu o assunto numa aula de sapiência, na Universidade dos Açores, nos primeiros anos da década de 90, mas não me recordo dos pormenores.
Nos próximos anos...
OCDE arrasa Economia portuguesa - Expresso.pt: "As projecções hoje divulgadas, em Paris, dizem que Portugal será o segundo país da OCDE com menor crescimento entre 2011 e 2017. Apenas o Japão está atrás.
Neste período, o crescimento de Portugal será de 1,4%, o segundo mais baixo entre os países da OCDE e o mais reduzido na Zona Euro. Os 16 países da Zona Euro vão crescer 2,1% entre 2011 e 2017. Os 30 da OCDE, crescerão 2,6%."
Preocupações
Economist's View: "Transgressing Planetary Boundaries":
"Transgressing Planetary Boundaries, by Jeff Sachs, Scientific American: We are eating ourselves out of house and home. ... The green revolution that made grain production soar gave humanity some breathing space, but the continuing rise in population and demand for meat production is exhausting that buffer. ...
Food production accounts for a third of all greenhouse gas emissions... Through the clearing of forestland, food production is also responsible for much of the loss of biodiversity. Chemical fertilizers cause massive depositions of nitrogen and phosphorus, which now destroy estuaries in hundreds of river systems and threaten ocean chemistry. Roughly 70 percent of worldwide water use goes to food production, which is implicated in groundwater depletion and ecologically destructive freshwater consumption from California to the Indo-Gangetic Plain to Central Asia to northern China."
Food production accounts for a third of all greenhouse gas emissions... Through the clearing of forestland, food production is also responsible for much of the loss of biodiversity. Chemical fertilizers cause massive depositions of nitrogen and phosphorus, which now destroy estuaries in hundreds of river systems and threaten ocean chemistry. Roughly 70 percent of worldwide water use goes to food production, which is implicated in groundwater depletion and ecologically destructive freshwater consumption from California to the Indo-Gangetic Plain to Central Asia to northern China."
Publicada por
José Matias
em
22:43
0
comentários
Etiquetas: agricultura, aquecimento global, demografia, mar, sustentabilidade
E continua ... Já sucedeu
"The findings, reported this week by scientists from the British Antarctic Survey (BAS), the Open University and University of Bristol in the journal Nature could help us understand more about rapid Antarctic climate changes.
Previous analysis of ice cores has shown that the climate consists of ice ages and warmer interglacial periods roughly every 100,000 years. This new investigation shows temperature 'spikes' within some of the interglacial periods over the last 340,000 years.
This suggests Antarctic temperature shows a high level of sensitivity to greenhouse gases at levels similar to those found today.
Lead author Louise Sime of British Antarctic Survey said,
'We didn't expect to see such warm temperatures, and we don't yet know in detail what caused them. But they indicate that Antarctica's climate may have undergone rapid shifts during past periods of high CO2.'
During the last warm period, about 125,000 years ago, sea level was around 5 metres higher than today."
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PS: Sobre o mesmo ver: Rising CO2 could cause catastrophic sea level rise finds Antarctic study| Climate Ark: "The British Antarctic Survey found that during past periods of high carbon dioxide, temperatures in Antarctica were up to 6C above current levels. This could cause a sea level rise of up six metres, threatening coastal cities like London, New York and San Francisco. It is the latest research to warn of the consequences of increased greenhouse gases on the Earth's climate. Yesterday a study warned that carbon dioxide produced by man is now rising at record rates putting the world on a pathway for a 6C rise in temperature."
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PS: Sobre o mesmo ver: Rising CO2 could cause catastrophic sea level rise finds Antarctic study| Climate Ark: "The British Antarctic Survey found that during past periods of high carbon dioxide, temperatures in Antarctica were up to 6C above current levels. This could cause a sea level rise of up six metres, threatening coastal cities like London, New York and San Francisco. It is the latest research to warn of the consequences of increased greenhouse gases on the Earth's climate. Yesterday a study warned that carbon dioxide produced by man is now rising at record rates putting the world on a pathway for a 6C rise in temperature."
quinta-feira, 19 de Novembro de 2009
História em movimento
Visualizing empires decline from Pedro M Cruz on Vimeo (via Outstanding graphics of the day | Free exchange | Economist.com)
Nota: Pode levar algum tempo a carregar.
E continua ... Publicidade que não engana!
"From a sharp-eyed reader comes this ad for Humble Oil (which later merged with Standard to become, yes, Exxon). It may win the All Time Millenial Award for Maximal Irony. It’s from a 1962 edition of Life Magazine, available on Google Books (click for larger version):"
Uber-ironic 1962 ad touts oil’s ability to melt glaciers! « Climate Progress
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