Showing posts with label Season. Show all posts
Showing posts with label Season. Show all posts

Tuesday, June 25, 2013

Ice Breaking News: This Is Your 2013 Arctic Freezing Season On Crack

Image of massive Arctic sea ice cracks showing temperature of the ice and the cracks between floes. Via Arctic Sea Ice blog.

By Neven Acropolis

The sea ice cap on top of the Arctic Ocean is often imagined to be a monolithic, continuous sheet of ice floating on water. A closer look quickly shows it is rather a collection of larger and smaller pieces of sea ice. Of course, we have all seen the images of ice floes separated by open water during summer, but even during winter the ice pack gets fractured, leading to leads that quickly freeze over again.

This explains how from the 1950's onwards submarines were able to emerge at the North Pole (the image on top is showing the USS Connecticut as it surfaces in the Arctic Circle on March 19th 2011; copyright: Kevin S. O’Brien, U.S. Navy). The subs couldn’t break through the thick ice and had to look for a lead where the ice was thinner.

Strangely enough those who deny the reality and potential consequences of AGW still like to abuse this event and claim it somehow proves that nothing unusual is happening up North. It doesn’t prove or disprove anything, as cracks and leads have always been a normal feature of the Arctic sea ice pack. But ‘normal’ is a word that has become less and less applicable to the Arctic in recent times. The 2012 melting season was the latest climax in a series of record years, that showed conclusively that the ice is thinner than it has been for a very long time.

We don’t even have to await the coming melting season to see this re-confirmed. We can see it right now, at the end of the freezing season. Like I just said, cracks are a regular feature of the Arctic, but this video below, made by NOAA’s Visualization Lab, shows a cracking event that is very rare, if not unique:

Ice, however thin, doesn’t fracture by itself. It needs wind to pull the ice pack apart. This wind was provided by a big, intense and stubborn high pressure area that started about a month ago and kicked the Beaufort Gyre into action, which is an ocean circulation pattern that transports the ice in a clockwise fashion from the North American coast towards Siberia.

This short animation of ASCAT radar images shows the movement in 10 day intervals from January 1st onwards, compared to the previous three winters. The black dot represents the North Pole, the white mass below it is the northern part of the Greenland Ice Sheet, the brighter colours represent thicker multi-year ice that survived last year’s melting season:

Aside from the red circle showing the start of the cracking event, there is clearly another big difference with previous years (blue rectangles). At the end of the previous three freezing seasons some of the multi-year ice in that disappearing safe haven north of Greenland and the Canadian Archipelago was transported into the Beaufort Sea. This buffer zone of thicker, older ice actually prevented an ice massacre in the 2010 and 2011 melting seasons, but unexpectedly didn’t stand a chance in 2012. That means that this melting season there is no buffer zone on the Pacific side of the Arctic.

On top of that there is this cracking event, the effects of which are difficult to predict. Even though sea ice extent and area have reached their annual peak and temperatures aren’t as low as they used to be, it is still quite cold in the Arctic. The labyrinth of leads that stretches all the way to Greenland due to another intense high pressure area, is freezing over again with a thin layer of ice (see yesterday’s satellite image). A possible outcome could be that when the Sun starts to beat down on this part of the Arctic from May onwards, the thin ice will quickly disappear leaving behind stretches of open water well inside the ice pack. Under the right circumstances this could significantly accelerate melting. Never mind the fact that the ice pack has started to break up in ever smaller parts so early in the year, making it much easier to move the ice around.

What about those big high pressure areas causing all that thin ice to crack and get caught up in the Beaufort Gyre? Not only have they been spurring on the spectacular cracking event of recent weeks, they are also helping winter to keep parts of the US and Europe in its icy grip. The highs are tied to a sudden stratospheric warming event (SSW) that has effectively made the Polar Vortex collapse relatively early, after it was already considerably weakened by a SSW in January. The Polar Vortex normally keeps cold air from spilling out all over the Northern Hemisphere. As Andrew Freedman wrote on Climate Central a couple of days ago:

The weather map across the Northern Hemisphere features a sprawling and unusually strong area of High pressure over Greenland that is serving as an atmospheric stop sign, slowing weather systems as they move from west to east, and allowing storms to deepen off the eastern seaboard and tap into more cold air than they otherwise might have.

That is not your typical fair weather area of High pressure, either. Some computer models have been projecting that, sometime during the next couple of days, the Greenland High could come close to setting the mark for the highest atmospheric pressure ever recorded.

The blocking pattern has helped direct cold air into the lower 48 states as well as parts of Europe, while the Arctic has been experiencing dramatically warmer-than-average conditions, particularly along the west coast of Greenland and in northeastern Canada. Blocking patterns are often associated with extreme weather events, from heat waves like the one that occurred last March, to historic cold air outbreaks and blizzards.

Another atmospheric blocking event on a large scale. What a coincidence. Below there’s a composite image of the two recent high pressure areas, the extremely negative Arctic Oscillation Index and temperature anomalies for the Arctic since January 1st (click for a larger version):

As can be seen on the image in the lower right corner, temperatures in the past three months have been anomalously high over Greenland and Baffin Bay, where sea ice area has already started to drop. This doesn’t bode well with last year’s events in mind, when almost all of the Greenland Ice Sheet was melting at one point (something which allegedly only occured once since the Holocene Climatic Optimum) and wild streams washed away bridges and heavy machinery, culminating in a record yearly amount of 570 Gt of melted volume.

So is there any good news with regards to the Arctic? Well, more and more oil companies are deciding that Arctic drilling is too difficult and therefore not worth the investment. But when it comes to sea ice I can only offer one thin sliver of hope. According to the PIOMAS sea ice volume model, our best tool for estimating the volume and average thickness of the ice pack, there is approximately as much ice as there was last year. Even though average thickness figures (calculated by dividing the volume by total area) suggest that the volume increase occured on the outer edges of the ice pack where ice will melt out anyway, it is still mildly comforting, as volume numbers were quite a bit below those of previous years so far:

Although the melting season has now officially started and sea ice area/extent has started to decrease, the ice will thicken some more until the Sun takes over the entire Arctic Circle. Perhaps weather conditions will be mild, gigantic cyclones leave the ice alone, and the ice turns out to be sturdier after all. But given the current status a new record is a very definite possibility. It’s not for nothing that we are entering the period that according to [early versions of] Wieslaw Maslowski’s model could see an ice-free Arctic (sea ice area below 1 million km2) for the first time in a very long time. This will probably have consequences, if they aren’t already upon us.

We’ll have to wait and see…

– by Neven Acropolis, who oversees the Arctic Sea Ice blog.

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Tuesday, February 12, 2013

Flu Season Fuels Debate Over Paid Sick Time Laws

Timothy A. Clary | AFP | Getty Images A man is given a flu shot by at the medical offices of Yaffe Ruden & Associates in New York.

Sniffling, groggy and afraid she had caught the flu, Diana Zavala dragged herself in to work anyway for a day she felt she couldn't afford to miss.

A school speech therapist who works as an independent contractor, she doesn't have paid sick days. So the mother of two reported to work and hoped for the best — and was aching, shivering and coughing by the end of the day. She stayed home the next day, then loaded up on medicine and returned to work.

"It's a balancing act" between physical health and financial well-being, she said.

An unusually early and vigorous flu season is drawing attention to a cause that has scored victories but also hit roadblocks in recent years: mandatory paid sick leave for the 40 percent of American private-sector workers — more than 40 million people — who don't have it.

Supporters and opponents are particularly watching New York City, where lawmakers are weighing a sick leave proposal amid a competitive mayoral race.

Pointing to a flu outbreak that the governor has called a public health emergency, dozens of doctors, nurses, lawmakers and activists — some in surgical masks — rallied Friday on the City Hall steps to call for passage of the measure, which has awaited a City Council vote for nearly three years. Two likely mayoral contenders have also pressed the point.

The flu spike is making people more aware of the argument for sick pay, said Ellen Bravo, executive director of Family Values at Work, which promotes paid sick time initiatives around the country. "There's people who say, 'OK, I get it — you don't want your server coughing on your food,'" she said.

Advocates have cast paid sick time as both a workforce issue akin to parental leave and "living wage" laws, and a public health priority.

But to some business owners, paid sick leave is an impractical and unfair burden for small operations. Critics also say the timing is bad, given the choppy economy and the hardships inflicted by super storm Sandy.

Michael Sinesky, an owner of seven bars and restaurants around the city, was against the sick time proposal before Sandy. And after the storm shut down four of his restaurants for days or weeks, costing hundreds of thousands of dollars that his insurers have yet to pay, "we're in survival mode."

"We're at the point, right now, where we cannot afford additional social initiatives," said Sinesky, whose roughly 500 employees switch shifts if they can't work, an arrangement that some restaurateurs say benefits workers because paid sick time wouldn't include tips.

Employees without sick days are more likely to go to work with a contagious illness, send an ill child to school or day care and use hospital emergency rooms for care, according to a 2010 survey by the University of Chicago's National Opinion Research Center. A 2011 study in the American Journal of Public Health estimated that a lack of sick time helped spread 5 million cases of flu-like illness during the 2009 swine flu outbreak.

To be sure, many employees entitled to sick time go to work ill anyway, out of dedication or at least a desire to project it. But the work-through-it ethic is shifting somewhat amid growing awareness about spreading sickness.

"Right now, where companies' incentives lie is butting right up against this concern over people coming into the workplace, infecting others and bringing productivity of a whole company down," said John A. Challenger, CEO of employer consulting firm Challenger, Gray & Christmas.

Paid sick day requirements are often popular in polls, but only four places have them: San Francisco, Seattle, Washington, D.C., and the state of Connecticut. The specific provisions vary.

Milwaukee voters approved a sick time requirement in 2008, but the state Legislature passed a law blocking it. Philadelphia's mayor vetoed a sick leave measure in 2011; lawmakers have since instituted a sick time requirement for businesses with city contracts. Voters rejected a paid sick day measure in Denver in 2011.

In New York, City Councilwoman Gale Brewer's proposal would require up to five paid sick days a year at businesses with at least five employees. It wouldn't include independent contractors, such as Zavala, who supports the idea nonetheless.

The idea boasts such supporters as feminist Gloria Steinem and "Sex and the City" actress Cynthia Nixon, as well as a majority of City Council members and a coalition of unions, women's groups and public health advocates. But it also faces influential opponents, including business groups, Mayor Michael Bloomberg and City Council Speaker Christine Quinn, who has virtually complete control over what matters come to a vote.

Quinn, who is expected to run for mayor, said she considers paid sick leave a worthy goal but doesn't think it would be wise to implement it in a sluggish economy. Two of her likely opponents, Public Advocate Bill de Blasio and Comptroller John Liu, have reiterated calls for paid sick leave in light of the flu season.

While the debate plays out, Emilio Palaguachi is recovering from the flu and looking for a job. The father of four was abruptly fired without explanation earlier this month from his job at a deli after taking a day off to go to a doctor, he said. His former employer couldn't be reached by telephone.

"I needed work," Palaguachi said after Friday's City Hall rally, but "I needed to see the doctor because I'm sick."


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Friday, February 8, 2013

Florida Business Leaders Vow To Block Paid Sick Day Laws During Worst Flu Season In A Decade

The U.S. is currently experiencing its worst flu season in a decade, but many workers can’t heed the advice of public health experts to stay home when they’re sick due to a lack of paid sick days. And Florida business leaders are looking to keep it that way:

The Florida Chamber of Commerce said Wednesday that one of its top legislative priorities this year would be blocking local governments from adopting paid sick-time measures such as the one pending in Orange County.

At a news conference in Tallahassee, Chamber President Mark Wilson said his powerful business group wants a law that would ban cities and counties from creating varying paid-sick-leave rules across the state.

The passage of local sick-time laws would, Wilson said, “make pockets of Florida very uncompetitive.”

Conservatives have spent a significant amount of effort to block paid sick days laws in Florida and elsewhere in the country. Wisconsin Republicans even went so far as to pass a law preventing any city in the state from passing a paid sick days law after Milwaukee adopted one.

But the complaints from businesses about paid sick days making Florida “uncompetitive” ring hollow. As Jane Farrell and Joanna Ventnor noted, “A study of Connecticut’s policy mandating five days of sick leave found that full use of this leave would cost an employer only 0.4 percent of their sales revenue on average. Without paid sick days, employees come to work unhealthy, costing employers $160 billion per year due to lower productivity levels.”

40 percent of private sector workers, 79 percent of food workers, and 80 percent of low-income workers have no paid sick days. The U.S. is alone in the developed world in not mandating some sort of paid sick leave for workers. And Florida’s business community is doing its best to keep it that way, despite the consequences.


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Wednesday, January 23, 2013

CDC: This Year’s Flu Season Is Officially An Epidemic

The Centers for Disease Control and Prevention made it official on Friday: This year’s severe flu season is an epidemic . It passed the threshold last week, with 7.3 percent of deaths from influenza or pneumonia. Forty-seven states are now reporting widespread activity after the season got to an especially early start.

Vaccination remains the “best tool we have to prevent the flu,” and the best time to receive a vaccine is before the season even starts. Even so, well over half of Americans neglect to get their flu shots. With the season well underway, some areas are reporting vaccine shortages.

One interesting measurement of flu season trends is Google search data for flu-related terms, which has skyrocketed in recent weeks. But this chart from the CDC, showing hospital visitors with flu-like symptoms, might provide a more appropriate context:


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Wednesday, January 16, 2013

Current Flu Season Is ‘Wreaking Havoc’ On ERs, Forcing Hospitals To Turn Away Sick Patients

Health care professionals warned that the 2012-2013 flu season would be worse than usual, with both a higher incidence of the infection and earlier onset of the flu. The numbers so far have confirmed their predictions — as ThinkProgress reported on Monday, well over half of U.S. states have been experiencing severe influenza activity.

And now Fox News is reporting that emergency rooms in states particularly hard hit by the flu — such as Illinois — are being forced to turn away sick flu patients. 11 Chicago-area hospitals alone are being forced to turn away sick Americans in the face of a particularly nasty flu season and the resulting patient burden:

This year’s predominant flu (76 percent) is very similar to a type that caused a severe season in 2003-2004, when the flu shot wasn’t a good match and there were more than 40,000 associated deaths, said Dr. Marc Siegel, a member of the Fox News Medical A Team. [...]

Melaney Arnold, spokeswoman for the Illinois Dept. of Health, said nearly 150 people have been admitted to intensive care units with the flu this season, and five have died.

Northwestern Medical Center in Chicago is one example of a hospital on bypass status. So if you’re in an ambulance because you have the flu, this hospital will have to turn you away. That doesn’t mean people can’t walk in there and still get treatment if they’re OK to do so, but it’s going to be a long wait.

The Advocate Good Samaritan Hospital in Downers Grove, Ill., reported that its emergency room has up to a three-hour wait, and a Good Samaritan doctor described the situation as “chaotic.”

“It’s not like you can just see them and out the door they go. They’re here for a while unfortunately, getting treatments,” said Dr. Tom Mullin of Good Samaritan. “Most of them we can fortunately discharge them home and treat them as an outpatient. But, it’s wreaking havoc on every emergency department in the city and the suburbs, I’ll tell you that.”

While it’s impossible to completely control an ever-mutating pathogen such as the influenza virus, flu vaccinations have proven to be the number one way to fight the pandemic. Unfortunately, a meager 37 percent of Americans have received their flu shots this year, keeping with low historical averages.

Americans’ reticence towards vaccinations has been a vexing dilemma for public health officials, driven largely by misinformation regarding vaccine safety and fact-free smear campaigns claiming that vaccines such as the HPV shot can result in sexual promiscuity and autism. Access is certainly another part of the equation. Fortunately, Obamacare has expanded free preventative health care services such as vaccinations to make them available to the Americans who previously couldn’t afford that care.


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