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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?


To: RetiredNow who wrote (5896)3/10/2009 11:02:48 AM
From: RetiredNow  Read Replies (2) | Respond to of 86355
 
Study Finds Doubling of Atmospheric CO2 from Pre-Industrial Levels Could Result in Dissolution of Coral Reefs

greencarcongress.com
10 March 2009

Researchers at the Carnegie Institution at Stanford University and the Hebrew University of Jerusalem warn that if atmospheric carbon dioxide reaches double pre-industrial levels, coral reefs can be expected to not just stop growing, but also to begin dissolving. Their study will be published online 13 March in the journal Geophysical Research Letters.



Aragonite saturation at different atmospheric CO2 concentrations. Pre-industrial concentration was ~ 280 ppm. Current concentration is >380 ppm. In the absence of strong policy, atmospheric CO2 will reach 550 ppm in several decades. Coral reefs are unlikely to survive in regions colored yellow, orange, or red. Source: Caldeira House testimony Feb 2009.


The impact on reefs is a consequence of both ocean acidification caused by the absorption of carbon dioxide into seawater and rising water temperatures. Previous studies have shown that rising carbon dioxide will slow coral growth, but this is the first study to show that coral reefs can be expected to start dissolving just about everywhere in just a few decades, unless carbon dioxide emissions are cut deeply and soon.

In testimony before the US House of Representatives Subcommittee on Insular Affairs, Oceans and Wildlife of the Committee on Natural Resources on 25 February, study co-author Ken Caldeira of the Carnegie Institution’s Department of Global Ecology said:

Globally, each second, we dump over 1000 tons of carbon dioxide into the atmosphere and, each second, about 300 tons of that carbon dioxide is going into the oceans. We can say with a high degree of certainty that all of this CO2 will make the oceans more acidic—that is simple chemistry taught to freshman college students. It is less certain how coral reefs, and marine ecosystems generally, will respond, but there are several lines of evidence—all of them disturbing.

“Our fossil-fueled lifestyle is killing off coral reefs. If we don’t change our ways soon, in the next few decades we will destroy what took millions of years to create. Coral reefs may be the canary in the coal mine.”
—Ken Caldeira

The study was designed determine the impact of this acidification on coral reefs. The research team, consisting of Jacob Silverman, Caldeira, and Long Cao of the Carnegie Institution as well as Boaz Lazar and Jonathan Erez from The Hebrew University of Jerusalem, used field data from coral reefs to determine the effects of temperature and water chemistry on coral calcification rates.

They input the field data to a model to calculate global seawater temperature and chemistry at different atmospheric levels of CO2 ranging from the pre-industrial value of 280 ppm (parts per million) to 750 ppm. The current atmospheric concentration is more than 380 ppm, and is rapidly rising due to human-caused emissions, primarily through the burning of fossil fuels.

Based on the model results for more than 9,000 reef locations, the researchers determined that at the highest concentration studied, 750 ppm, acidification of seawater would reduce calcification rates of three quarters of the world’s reefs to less than 20% of pre-industrial rates. Field studies suggest that at such low rates, coral growth would not be able to keep up with dissolution and other natural as well as manmade destructive processes attacking reefs.

Prospects for reefs are even worse when the effects of coral bleaching are included in the model. Coral bleaching refers to the loss of symbiotic algae that are essential for healthy growth of coral colonies. Bleaching is already a widespread problem, and high temperatures are among the factors known to promote bleaching.

According to their model, the researchers calculated that under present conditions 30% of reefs have already undergone bleaching and that at CO2 levels of 560 ppm (twice pre-industrial levels) the combined effects of acidification and bleaching will reduce the calcification rates of all the world’s reefs by 80% or more. This lowered calcification rate will render all reefs vulnerable to dissolution, without even considering other threats to reefs, such as pollution.



To: RetiredNow who wrote (5896)3/10/2009 1:44:00 PM
From: Brumar89  Read Replies (1) | Respond to of 86355
 
I was referring to another Krugman column which addressed the Obama administrations policy on banking.

The point was that its not just rightwingers seeing problems in Obama's economic policies.

As another indicator of this see Robert Samuelson's article in Newsweek:

Presidential Double-Talk

By Robert J. SAMUELSON | NEWSWEEK
Published Mar 7, 2009

Uncertainty (too much) and confidence (too little) define this crisis. Investors have surely noted the gap between Obama's rhetoric and his actions.

To those who believe that Barack Obama is a different kind of politician—more honest, more courageous, more upfront—please don't examine his administration's recent budget. If you do, you may sadly conclude that he resembles presidents stretching back to John F. Kennedy in one crucial respect. He won't tax voters for all the government services they want. That's the main reason we've run budget deficits in 43 of the past 48 years.

Barack Obama is a great pretender. He constantly says he's doing things that he isn't, and he relies on his powerful rhetoric to obscure the difference.
He has made "responsibility" a personal theme, and the budget's cover line is "A New Era of Responsibility." He claims that the budget begins "making the tough choices necessary to restore fiscal discipline." It doesn't.

Let's recognize that, with today's depressed economy, big deficits are unavoidable for some years. Let's also assume that Obama wins reelection. By his last year, 2016, the economy will have presumably long recovered. What, then, does his final budget look like? Well, it runs a $637 billion deficit, equal to 3.2 percent of the economy (gross domestic product), projects Obama's Office of Management and Budget. Just for the record, that would roughly match Ronald Reagan's last deficit, 3.1 percent of GDP in 1988, so fiercely criticized by Democrats.

As a society, we should be willing to pay in taxes what it costs government to provide desired services. If benefits don't seem equal to burdens, then the spending isn't worth having (granting exceptions for deficits in wartime and economic slumps).

If Obama were "responsible," he would be leading a candid conversation about government's size and role.
Who deserves support and why? How big can government grow before higher taxes and deficits harm long-term economic growth? Although Obama claims to be doing this, he hasn't confronted entitlement psychology—the belief that government benefits once conferred should never be revoked—and asked whether some significant spending no longer serves any "public interest."

Is it in the public interest for the well-off elderly (say, a couple with $125,000 of income) to be subsidized, through Social Security and Medicare, by poorer young and middle-aged workers? Are any farm subsidies justified when farming seems no more insecure than countless other sectors (say, the news media) and subsidies aren't essential for food production? We wouldn't starve without agricultural subsidies.

Given the aging of American society, government faces huge pressures to expand—and intense conflicts between spending on the elderly and spending on everything else. But even before the full force of the baby boom hits (in 2016, only about a quarter of baby boomers will have reached 65), Obama's government will have grown. In 2016, federal spending is projected to be 22.4 percent of GDP, up from 21 percent in 2008; federal taxes, 19.2 percent of GDP, up from 17.7 percent.

It would also be "responsible" for Obama to acknowledge the big gamble in his budget. Defense—a.k.a. national security—has long been government's first job. In Obama's budget, defense spending drops from 20 percent of the total in 2008 to 14 percent in 2016, the smallest share since the 1930s. The decline, reflecting large savings from an Iraq troop drawdown, presumes a much safer world. If the world doesn't cooperate, Obama's deficits would grow.

The gap between Obama rhetoric and Obama reality is not confined to the budget. Nor are the consequences. Since the start of 2009, the stock market has declined 23.68 percent (through March 6), a paper loss of $2.6 trillion, says Wilshire Associates. The Wall Street Journal's editorial page attributes all the decline to Obama's policies. That's unfair; the economy's continuing deterioration explains much of the fall. Still, Obama isn't blameless.

Confidence (too little) and uncertainty (too much) are at the core of this crisis. All of Obama's double-talk threatens to reduce the first and raise the second. Investors and traders have surely noticed the discrepancies between Obama's words and actions.

Obama says he's focused singlemindedly on reviving the economy, but he's also using the crisis as a vehicle to advance an ambitious long-term agenda to reengineer the U.S. economy.


A point Warren Buffet made recently btw.
Message 25479031


The two sometimes collide. The $787 billion "stimulus" is weaker than necessary, because almost $200 billion of the impact occurs after 2010. Many of these extended projects (high-speed rail, computerized medical records) can't be accomplished quickly. When Congress debates Obama's sweeping health-care and energy proposals, industries, regions and governmental philosophies will clash. Will this improve confidence? Reduce uncertainty?

A prudent president would have made a "tough choice"— concentrated on the economy, deferred his more contentious agenda. Similarly, Obama claims to seek bipartisanship but, in reality, doesn't. His bipartisanship consists of sprinkling his cabinet with token Republicans and inviting some Republican members of Congress to the White House to watch the Super Bowl. It does not consist of fashioning proposals that would attract bipartisan support on their merits. Instead, he clings to dubious, partisan policies (mortgage cramdown, union checkoff) that arouse fierce opposition.

It is Obama's conceit—perhaps his cockiness—that he can ignore these blatant inconsistencies. Like many smart people, he believes he can talk his way around any problem. Perhaps he can. In this, he has an ally in much of the mainstream media, which seem so enthralled with him that they can't recognize glaring contradictions. During the campaign, Obama claimed he would change Washington's petty partisanship; he also advocated a highly partisan agenda. Both claims could not be true. The media barely noticed; the same obliviousness persists. But Obama still runs a risk: that his overworked rhetoric loses its power and boomerangs on him.

newsweek.com