Showing posts with label arctic. Show all posts
Showing posts with label arctic. Show all posts

Thursday, February 20, 2014

Understanding the Polar Vortex

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Here's why most of the United States has been in the Deep Freeze this winter:

From the New York Post
“The Big Chill,” NASA’s Goddard Space Flight Center post read. “Blistering cold air from the Arctic plunged southward this winter, breaking US temperature records.”
“A persistent pattern of winds spins high above the Arctic in winter. The winds, known as the polar vortex, typically blow in a fairly tight circular formation. But in late December 2013 and early January 2014, the winds loosened and frigid Arctic air spilled farther south than usual, deep into the continental United States.”

NASA Video Explaining the Polar Vortex








Monday, January 6, 2014

Ice Cold Polar Vortex Takes Over America

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On the heels of a winter storm named "Hercules" that brought blizzard conditions to the Midwest and New England and caused 16 deaths, we now have a phenomenon called the "Winter Vortex" that could be even more dangerous. Over the next 24 hours the Arctic blast is going to make temperatures plummet to below double digits below zero over the northern states and into the south. Also blizzards are happening again, and several states are under states of emergency just due to ice and cold. Is this extreme weather connected to global warming? Probably, yes. Is there anything we can do about it except bundle up and shake a fist at the sky? No.



From Time Magazine:
Meteorologists attribute the “polar vortex” to freezing air from the North Pole being pushed down to as far as the Gulf Coast of the U.S., the Associated Press reports. In Atlanta, temperatures will be in the mid-20s by Tuesday while a wintry mix of rain and snow are expected in parts of Kentucky, Tennessee, West Virginia, northern Arkansas, southern Ohio and southwestern Pennsylvania late into Sunday. The cold front will likely freeze large bodies of water, like the Great Lakes, meaning freezing temperatures could last through winter.

While still digging out from current snowfall, another winter storm will drop more snow and ice onto the the central Plains to the Great Lakes states this weekend. The biggest hit areas will include St. Louis, Indianapolis, Detroit, Cleveland and Buffalo.




Monday, December 3, 2012

Documenting the End of Arctic Ice on our Planet

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It's imperative to pay attention to the disappearance of ancient ice all over the world. It's not an academic question of "when" this will happen anymore. Global Warming is real. It is happening right now and the effects on our planet will be devastating as temperatures and oceans rise.

I saw parts of the movie "Chasing Ice" on PBS a few months ago, and it is amazing. What they are documenting is historic, awe-inspiring and undeniable. And real.

Earth Vision Trust on Facebook
James Balog on Twitter



"A lot of people have told me it's time to stop but I find myself with a profound committment to continuing to tell this story. I feel like I'm in the middle of the biggest story I could possibly ever be in the middle of as an environmental photographer. This is a monumental historic change in the natural landscape, happening in our time."
~ James Balog, "Chasing Ice" Photographer, on PBS News







From the Extreme Ice Survey Website
In 2005, internationally acclaimed nature photojournalist James Balog traveled to Iceland to photograph glaciers for The New Yorker. This led to a 2006 National Geographic assignment to document changing glaciers in various parts of the world. In the course of shooting that story (which became the June 2007 cover story, “The Big Thaw”), Balog, who in addition to being a photographer is a mountaineer with a graduate degree in geomorphology, recognized that extraordinary amounts of ice were vanishing with shocking speed. Features that took centuries to develop were being destroyed in just a few years or even just a few weeks. These changes are the most visually dramatic and immediate manifestations of climate change on our planet today.

Founded in 2007 by James Balog, the Extreme Ice Survey (EIS) is an innovative, long-term photography project that merges art and science to give a “visual voice” to the planet’s changing ecosystems. One aspect of EIS is an extensive portfolio of single-frame photos celebrating the beauty–the art and architecture–of ice. The other aspect of EIS is time-lapse photography; currently, 34 cameras are deployed at 16 glaciers in Greenland, Iceland, the Nepalese Himalaya, Alaska and the Rocky Mountains of the U.S. These cameras record changes in the glaciers every half hour, year-round during daylight, yielding approximately 8,000 frames per camera per year. We edit the time-lapse images into stunning videos that reveal how fast climate change is transforming large regions of the planet. Finally, EIS supplements the time-lapse record with episodic repeat photography in the French and Swiss Alps, Canada, Iceland, and Bolivia.

Saturday, August 18, 2012

Climate Crisis

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Lots of news about extreme weather conditions that are eventually going to affect all of us.

Governor Quinn of Illinois: We are All Tom Joad
Who can forget the profound desperation in Tom Joad’s heart as he and his family leave Oklahoma’s drought-stricken farms in John Steinbeck’s classic "The Grapes of Wrath?"

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That dusty image — of flattened fields and beaten-down farmers — can be seen today in most counties in my state and others due to the persistent, unprecedented drought now suffocating America’s breadbasket.
The facts are stark.
In Illinois, we’ve experienced the sixth-driest growing season on record. Of 102 counties, 100 are disaster areas. The latest corn conditions show 74 percent of this year’s crop is “poor” or “very poor”, so the cost of corn products ranging from ethanol to tortillas will soar. Barren grazing pastures are forcing livestock farmers to purchase hay at inflated prices. The drought also affects fisheries, wildlife, water levels in navigable waterways and the entire food chain.

Reuters: UN Warns Extreme Weather Affects Food Supply
"It has not been properly recognised yet that we are dealing with a food system here. There is a whole chain that is also going to be affected by climate change," Professor Dr John Porter of the University of Copenhagen said.

"It is more than just the fact that there are droughts in the United States that will reduce yields," he said. Like the other experts, he said was giving personal opinions, not those of the U.N. panel.

After harvest, floods could wash away roads or bridges, for instance, between fields and factories processing the crop. Or warehouses storing food could be damaged by more powerful storms. Such factors were likely to hit poor nations hardest.

"There are reasons to expect more frequent (price) spikes, given that it will be more common to see conditions that are considered extreme," said David Lobell, an assistant professor at Stanford University in California.

Visit NBCNews.com for breaking news, world news, and news about the economy
Visit NBCNews.com for breaking news, world news, and news about the economy


Western Wildfires Threaten Homes
Not only are more wildfires flaring up in the West this year than last, but the nation's fires have gotten bigger, said Jennifer Smith, of the National Interagency Fire Center in Boise, Idaho. As of Thursday, more than 43,000 wildfires had been reported in the U.S. this season, burning a total of nearly 6.4 million acres, or 10,000 square miles, the center said. The 10-year average for the period is 52,535 fires, but covering only 5 million acres, Smith said.
 
 
Guardian UK: Arctic Sea Ice Disappearing
Using instruments on earlier satellites, scientists could see that the area covered by summer sea ice in the Arctic has been dwindling rapidly. But the new measurements indicate that this ice has been thinning dramatically at the same time. For example, in regions north of Canada and Greenland, where ice thickness regularly stayed at around five to six metres in summer a decade ago, levels have dropped to one to three metres. "Preliminary analysis of our data indicates that the rate of loss of sea ice volume in summer in the Arctic may be far larger than we had previously suspected," said Dr Seymour Laxon, of the Centre for Polar Observation and Modelling at University College London (UCL), where CryoSat-2 data is being analysed.

"Very soon we may experience the iconic moment when, one day in the summer, we look at satellite images and see no sea ice coverage in the Arctic, just open water." The consequences of losing the Arctic's ice coverage, even for only part of the year, could be profound. Without the cap's white brilliance to reflect sunlight back into space, the region will heat up even more than at present. As a result, ocean temperatures will rise and methane deposits on the ocean floor could melt, evaporate and bubble into the atmosphere. Scientists have recently reported evidence that methane plumes are now appearing in many areas. Methane is a particularly powerful greenhouse gas and rising levels of it in the atmosphere are only likely to accelerate global warming.