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By combining a hurricane model and coupled ocean-atmosphere general circulation model to investigate the early Pliocene, Emanuel, Brierley and co-author Alexey Fedorov observed how vertical ocean mixing by hurricanes near the equator caused shallow parcels of water to heat up and later resurface in the eastern equatorial Pacific as part of the ocean wind-driven circulation. The researchers conclude from this pattern that frequent hurricanes in the central Pacific likely strengthened the warm pool in the eastern equatorial Pacific, which in turn increased hurricane frequency — an interaction described by Emanuel as a “two-way feedback process.”�The researchers believe that in addition to creating more hurricanes, the intense hurricane activity likely created a permanent El Nino like state in which very warm water in the eastern Pacific near the equator extended to higher latitudes. The El Nino weather pattern, which is caused when warm water replaces cold water in the Pacific, can impact the global climate by intermittently altering atmospheric circulation, temperature and precipitation patterns.The research suggests that Earth’s climate system may have at least two states — the one we currently live in that has relatively few tropical cyclones and relatively cold water, including in the eastern part of the Pacific, and the one during the Pliocene that featured warm sea surface temperatures, permanent El Nino conditions and high tropical cyclone activity.Although the paper does not suggest a direct link with current climate models, Fedorov said it is possible that future global warming could cause Earth to transition into a different equilibrium state that has more hurricanes and permanent El Nino conditions. “So far, there is no evidence in our simulations that this transition is going to occur at least in the next century. However, it’s still possible that the condition can occur in the future.”�Whether our future world is characterized by a mean state that is more El Nino-like remains one of the most important unanswered questions in climate dynamics, according to Matt Huber, a professor in Purdue University’s Department of Earth and Atmospheric Sciences. The Pliocene was a warmer time than now with high carbon dioxide levels. The present study found that hurricanes influenced by weakened atmospheric circulation — possibly related to high levels of carbon dioxide — contributed to very warm temperatures in the Pacific Ocean, which in turn led to more frequent and intense hurricanes. The research indicates that Earth’s climate may have multiple states based on this feedback cycle, meaning that the climate could change qualitatively in response to the effects of global warming.

Why haven't the President and Senate Democrats pulled the reconciliation trigger before now? I haven't spoken directly with the President or with Harry Reid but I've spent the last several weeks sounding out contacts on the Hill and in the White House to find an answer. Here are the theories. None of them justifies waiting any longer. Reconciliation is too extreme a measure to use on a piece of legislation so important. I hear this a lot but it's bunk. George W. Bush used reconciliation to enact his giant tax cut bill in 2003 (he garnered only 50 votes for it in the Senate, forcing Vice President Cheney to cast the deciding vote). Six years before that, Bill Clinton rounded up 51 votes to enact the Children's Health Insurance Program (CHIP), the largest expansion of taxpayer-funded health insurance coverage for children in the U.S. since Medicaid began in the 1960s. Through reconciliation, we also got Medicare Advantage. Also through reconciliation came the COBRA act, which gives Americans a bit of healthcare protection after they lose a job ("reconciliaton is the "R" in the COBRA acronym.) These were all big, important pieces of legislation, and all were enacted by 51 votes in the Senate. Use of reconciliation would infuriate Senate Republicans. It may. So what? They haven't given Obama a single vote on any major issue since he first began wining and dining them at the White House. In fact, Senate Minority Leader Mitch McConnell and company have been doing everything in their power to undermine the President. They're using the same playbook Republicans used in the first two years of the Clinton administration, hoping to discredit the President and score large victories in the midterm elections by burying his biggest legislative initiative. Indeed, Obama could credibly argue that Senate Republicans have altered the rules of the Senate by demanding 60 votes on almost every initiative - a far more extensive use of the filibuster than at any time in modern history - so it's only right that he, the President, now resort to reconciliation. Obama needs Republican votes on military policy so he doesn't dare antagonize them on health care. I hear this from some quarters but I don't buy it. While it's true that Dems are skeptical of Obama's escalation of the war in Afghanistan and that Republicans are his major backers, it seems doubtful R's would withdraw their support if the President forced their hand on health care. Foreign policy is the one area where Republicans have offered a halfway consistent (and always bellicose) voice, and Dick Cheney et al would excoriate them if they failed to back a strong military presence in the Middle East. This is truer now than ever. Reid fears he can't even get 51 votes in the Senate now, after Scott Brown's win. Reid counts noses better than I do, but if Senate Democrats can't come up with even 51 votes for the health care reforms they enacted weeks ago they give new definition to the term "spineless." Besides, if this is the case, Obama ought to be banging Senate heads together. A president has huge bargaining leverage because he presides over an almost infinite list of future deals. Lyndon Johnson wasn't afraid to use his power to the fullest to get Medicare enacted. If Obama can't get 51 Senate votes out of 58 or 59 Dems and Independents, he definitely won't be able to get 51 Senate votes after November. Inevitably, the Senate will lose some Democrats. Now's his last opportunity. House and Senate Democrats are telling Obama they don't want to take another vote on health care or even enact it before November's midterms because they're afraid it will jeopardize their chances of being reelected and may threaten their control over the House and Senate. I hear this repeatedly but if it's true Republicans have done a far better job scaring Americans about health care reform than any pollster has been able to uncover. Most polls still show a majority of Americans still in favor of the basic tenets of reform - expanded coverage, regulations barring insurers from refusing coverage because of someone's preexisting conditions and preventing insurers from kicking someone off the rolls because they get sick, requirements that employers provide coverage or pay into a common pool, and so on. And now that many private insurers are hiking up premiums, co-pays, and deductibles, the public is even readier to embrace reform.

Sen. Scott Brown (R-MA) broke with his party and voted with the Democrats. So did Sen. Olympia Snowe (R-ME). It had been uncertain earlier in the day whether any Republicans would help Democrats reach 60 votes and overcome the threat of a GOP filibuster. With Sen. Frank Lautenberg (D-NJ) out of the Senate after being diagnosed with stomach cancer, Democrats needed at least two Republican votes to overcome a GOP filibuster threat. "Work with us on this," Senate Majority Leader Harry Reid said moments before the vote. "Show us you're serious about legislating." Reid also warned Republicans: Fail to support this bill, and the minority would "confirm their reputation as the 'Party of No.'" The bill, which is much smaller than some original proposals, would exempt businesses from paying Social Security payroll taxes this year after hiring from the nation's pool of millions of unemployed. The Build-America Bonds Act of 2009 would be renewed by the jobs bill. The scaled-down bill would also extend some tax breaks for small businesses, renew highway programs through December, and put $20 billion in the highway trust fund.

Proponents of comprehensive regulatory reform hope for sweeping measures to protect consumers from predatory lending, rein in high-stakes Wall Street trading in arcane derivatives, boost capital requirements for banks that want to bet big with depositors' money and spread some regulatory sunshine on the dark pools of the “shadow banking system” that caught regulators flat-footed when the market spiraled into the abyss in the fall of 2008. “We cannot afford to let the status quo continue,” Sheila Bair, head of the Federal Deposit Insurance Corp., told a meeting of business economists in Washington. The final law is still in doubt. Sen. Christopher Dodd, D-Conn., has pressed for reform during a year of intensely partisan bickering. On Friday, Dodd — a lame duck who announced his retirement after disclosures that he accepted favorable terms from subprime lender Countrywide Financial — claimed that the Senate Banking Committee he chairs was “days away” from wrapping up a bill. Any resolution faces a major political hurdle that has drawn the most public attention: a proposal to create a new agency to protect consumers from predatory lending and other abusive financial practices. While the "systemic risks" to the financial system may represent a bigger threat in dollar terms, voters might be more focused on the consumer impact.Dodd said that’s not hard to understand.“The subject matter of derivatives and swaps and the issue of systemic risk and too-big-to- fail seem somewhat removed from the general public,” he told CNBC after the Senate compromise was reached. “Watching my credit card go to 32 percent rates and huge fees, watching prepayment penalties on mortgages, these are things that millions of people understand.”