At international wildlife meeting today Canada is fighting to continue to trophy hunt endangered polar bears: Russia says NYET! Here’s what’s going in the Arctic – Stephen
Ice-free summer in the Arctic is just a matter of time – mostly likely within the next 5 years. Here’s a “six-pack” of my recent articles on how global warming is transforming the Arctic:
[This is my first exclusive blog post – virtually everything else on this site are my published articles. Not sure if I’ll have time to do more. Let me know what you think – Stephen ]
A new study released Feb 13 revealed that the volume of Arctic sea ice is declining rapidly. Ice volume in September 2012 had fallen 80 percent compared with the volume of ice in September 1980 according to the latest data from European Space Agency satellite, CryoSat-2. As the Arctic heats up Most of the ice loss has been in recent years. Between 2003 and 2012 the volume declined a whopping 36 percent. Summers with a sea ice-free Arctic are only a few years away, scientists now agree. This will have significant and permanent impacts on weather patterns in the Northern Hemisphere.
The impacts are already being felt across the entire northern hemisphere. The loss of sea ice in recent years has been affecting weather patterns, recent research has shown. The all-important jet stream – the west-to-east winds that are the boundary between the cold Arctic and the warm mid-latitudes – is slowing down, moving north and become more erratic.
When continent-sized areas of the Arctic Ocean flip from the all-white ice to dark blue, tremendous amounts of heat are absorbed from the 24-hour summer sun. When the bitter cold Arctic winter sets in over the next few weeks, all the heat in the ocean must be released into the atmosphere before ice can form again.
The Arctic will be ice-covered in winter for decades to come but what’s fundamentally changed is that every fall, unprecedented amounts of heat and water vapour will be released into the atmosphere.
“The polar meltdown shows we’re teetering on the brink of climate change catastrophe,” said Shaye Wolf, climate science director at the Center for Biological Diversity’s Climate Law Institute.
As the sea ice declines, Arctic temperatures increase, thawing more and more permafrost, which will release more climate-heating carbon and methane. Permafrost is frozen soil, sediment and rock spanning 13 million square kilometres of the land in Alaska, Canada, Siberia and parts of Europe. It has twice the carbon that the atmosphere currently holds.
A Swedish study released Feb 17 has found a link between sea ice declines and increases in methane emissions. Methane has 40x the warming of carbon. This is may lead to an even faster meltdown of the Arctic risking the release of huge amounts of permafrost carbon and methane.
The melt of Arctic sea ice has reached its lowest point this year, shrinking 18 percent from last year’s near-record low.
Summer ice this year is half what it was 30 years ago and is now affecting weather patterns. The massive declines in ice in recent summers have shocked scientists and Arctic experts. Some predict that in just a few years we will witness an event that hasn’t happened in millions of years: the complete loss of summer ice.
“Few of us were prepared for how rapidly the changes would actually occur” as a result of the burning fossil fuels that are warming the planet, said Serreze.
“We could see an essentially ice-free Arctic ocean in late summer by the year 2030,” he told IPS.
Not long ago experts thought the soonest the Arctic would be ice-free was 2070. Now it’s anywhere from four to 18 years away.
The impacts are already being felt across the entire northern hemisphere. The loss of sea ice in recent years has been affecting weather patterns, recent research has shown. The all-important jet stream – the west-to-east winds that are the boundary between the cold Arctic and the warm mid-latitudes – is slowing down, moving north and become more erratic.
“Europe, eastern Asia and eastern North America is connected to unique physical processes in the Arctic,” said James Overland of the NOAA/Pacific Marine Environmental Laboratory in the United States.
“In future, cold and snowy winters will be the rule rather than the exception” in these regions, Overland told IPS in Oslo in 2010.
The summer’s record loss of Arctic sea ice may mean a cold winter for the UK and northern Europe, Jennifer Francis, a researcher at Rutgers University, told the Guardian last week.
The region has been prone to bad winters after summers with very low sea ice, such as 2011 and 2007, Francis said. Continue reading →
This is an analysis piece from 2011. I will be interviewing experts around the world for a new article on this year’s record breaking melt of Arctic ice. — Stephen
Rapidly warming planet biggest threat to all nations
Military budget more than enough to convert USA to 100% renewable energy
Analysis by Stephen Leahy
UXBRIDGE, Canada, Sep 15, 2011 (IPS)
All the analysis and commentary about safety and security on the tenth anniversary of 9/11 ignored by far the biggest ongoing threat to global security: climate change.
Just days before Sunday’s commemoration of the attacks, German scientists pointed to yet another smoking gun of climate change: the Arctic sea ice reached a new historic minimum ice extent.
The rapidity with which the planet is losing its northern ice cap continues to astonish experts. The defrosting northern pole is one of the prime drivers of Earth’s climate system and is changing global weather patterns in unpredictable ways.
The Arctic ice melt is also accelerating the rate of climate change beyond what humanity is doing with every barrel of oil, tonne of…
Rapidly warming planet biggest threat to all nations
Military budget more than enough to convert USA to 100% renewable energy
Analysis by Stephen Leahy
UXBRIDGE, Canada, Sep 15, 2011 (IPS)
All the analysis and commentary about safety and security on the tenth anniversary of 9/11 ignored by far the biggest ongoing threat to global security: climate change.
Just days before Sunday’s commemoration of the attacks, German scientists pointed to yet another smoking gun of climate change: the Arctic sea ice reached a new historic minimum ice extent.
The rapidity with which the planet is losing its northern ice cap continues to astonish experts. The defrosting northern pole is one of the prime drivers of Earth’s climate system and is changing global weather patterns in unpredictable ways.
The Arctic ice melt is also accelerating the rate of climate change beyond what humanity is doing with every barrel of oil, tonne of coal or cubic metre of gas burned.
On Sep. 8, researchers at the University of Bremen in Germany reported that the Arctic ice melt bettered the previous minimum of 2007. Other research centres using different satellite and analysis tools say the extraordinary decline of ice in 2007 has not yet been exceeded this year and 2011 remains a close second.
Sea Ice Extent 2003-2011
“We think it will end up a little bit short of the record – not that it really matters,” said Mark Serreze, director of the National Snow and Ice Data Center in the U.S. city of Boulder, Colorado.
“What is extraordinary this year is that there was no weird weather pattern that created the perfect conditions for the record melt in 2007,” Serreze told IPS.
Since December of last year the Arctic sea ice has been breaking records with the lowest ever ice cover – lower than the shocker melt down of ice in 2007. This is the latest update from NOAA’s National Snow and Ice Data Center. It shows that the seasonal extant of Arctic sea ice at the end of February, 2011, stood at a record low, well below the prior record set in 2007 and almost 3 million square kilometers below the average for that winter date, when sea ice is usually within days of its greatest seasonal extant for the year.
I’ve written several articles on the latest arctic science and how the decline in sea ice affects weather in the northern hemisphere:
Climate change seems to be behind the shockingly warm temps across much of the eastern Arctic all winter and is likely responsible for the snow has fallen across much of the southern US. Much of Arctic ice sea melted last summer, allowing the Arctic ocean to warm up which then took longer to freeze i.e. late Dec/ Jan. And that changed the wind circulation patterns bringing polar air far south. (See my previous post that explains what is happening East Coast Blizzard and Europe’s Snowmaggddon Reveal Fingerprints of Climate Change
Part of the reason is the heat stored in the Arctic ocean from this summer’s ice melt has delayed the annual freeze up. Here is the very latest satellite measurements which show the Arctic sea ice extent for December as the lowest on record.
2 degrees C of warming could spark runaway global warming
By Stephen Leahy
UXBRIDGE, Canada, Sep 20, 2010 (IPS)
The carbon dioxide emissions from burning fossil fuels have melted the Arctic sea ice to its lowest volume since before the rise of human civilisation, dangerously upsetting the energy balance of the entire planet, climate scientists are reporting.
“The Arctic sea ice has reached its four lowest summer extents (area covered) in the last four years,” said Mark Serreze, director of the National Snow and Ice Data Center in the U.S. city of Boulder, Colorado.
The volume – extent and thickness – of ice left in the Arctic likely reached the lowest ever level this month, Serreze told IPS.
“I stand by my previous statements that the Arctic summer sea ice cover is in a death spiral. It’s not going to recover,” he said.
Ice-free summer in the Arctic is just a matter of time – mostly likely within the next 5 years. Here’s a “six-pack” of my recent articles on how global warming is transforming the Arctic:
Stephen Leahy, International Environmental Journalist 