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Earth is fighting to stay alive. Mass dieoffs, triggered by anthropogenic assault and fallout of planetary defense systems offsetting the impact, could begin anytime!

Posts Tagged ‘Arctic ice extent’

FIRE-EARTH Alert: Low Polar Ice Extents

Posted by feww on January 8, 2017

‘Low sea ice extent continues in both poles’

Arctic sea ice extent for December 2016 averaged 12.10 million km², the second lowest December extent in the satellite record, NSDIC reported.

Sea ice in the Arctic and the Antarctic set record low extents every day in December, continuing the pattern that began in November. Warm atmospheric conditions persisted over the Arctic Ocean, notably in the far northern Atlantic and the northern Bering Sea. Air temperatures near the Antarctic sea ice edge were near average. For the year 2016, sea ice extent in both polar regions was at levels well below what is typical of the past several decades.

It was 20,000 km² more than the record December low in 2010, and 1.03 million km² less than below the long-term average (December 1981 to 2010).

Additional Details:

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How Much Ice Melting in Arctic Sea?

Posted by feww on July 20, 2013

Arctic ice extent fell 61% faster than average first half of July

Arctic ice cover declined at a rate of 132,000 km² per day during the first two weeks of July, which was 61% faster than the average, said the National Snow and Ice Data Center (NSIDC).

  • The average rate of decline calculated over the period 1981 to 2010 is 82,000 km²/day.
  • The fastest ice loss was observed in the Kara sea, where  temperatures were up to 5ºC above average, and East Greenland sea, followed by the Laptev Sea.
  • Sea ice retreated slowest on the Pacific side,  especially in the Beaufort and Chukchi seas.
  • Temperatures over Alaska, Siberia and the Canadian Arctic were up to 5ºC  below average.

ASIE- july 2013
The graph above shows Arctic sea ice extent as of July 19, 2013, along with daily ice extent data for 2012, the record low year. 2013 is shown in blue, and 2012 in green. The gray area around the average line shows the two standard deviation range of the data. Sea Ice Index data. Credit: National Snow and Ice Data Center

sea ice extent 19Jul2013
Arctic sea ice extent for July 19. The orange line shows the 1981 to 2010 median extent for that month. The black cross indicates the geographic North Pole. Credit: National Snow and Ice Data Center

Additional Data

  • Arctic sea ice reached its annual maximum extent at 15.13 million km²on March 10, five days later than the 1979 to 2000 average date of March 10.
  • The 2013 maximum ice extent was 733,000 km² below the 1979 to 2000, and became the 6th lowest in the satellite record, said NSIDC.
  • The lowest maximum extent occurred in 2011; ten lowest maximums have occurred in the last ten years (2004 – 2013).

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Posted in Global Disaster watch, global disasters, global disasters 2013, Significant Event Imagery, significant events | Tagged: , , , , , , , | 1 Comment »

Arctic sea ice may fall to record lows

Posted by feww on September 7, 2011

Arctic ice extent for August fell to 2nd lowest level for the month on satellite record

  • Monthly August ice extent for 1979 to 2011 shows a decline of 9.3% per decade.

  • Greenhouse gases are responsible for half of Arctic ice cover retreat from 1979 to 2005: Study


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Disaster Calendar 2011 – September 7

[September 7, 2011]  Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016.  SYMBOLIC COUNTDOWN: 1,652 Days Left to the ‘Worst Day’ in Human History

  • Arctic Ocean. Satellite data processed by the University of Bremen showed Arctic ice extent on September 5 fell below the same date in 2007.
    • Greenhouse gases are responsible for half of Arctic ice cover retreat from 1979 to 2005.
    • August average Arctic sea ice extent in 2011 fell to the second lowest level for the month since records began in 1979, NSIDC reported.
    • In August, ice extent retreated at a faster than average   pace of 67,700 km²/day . The average decline rate for August 1979 to 2000 was 53,700 km²/day.
    • Average ice extent for August 2011 was 5.52 million km², or 160,000 km² above the record low set inAugust 2007, and 2.15 million km² or 28% below the average for 1979 to 2000.
    • On August 31, 2011 Arctic ice extent was 4.63 million km², or 100,000 km² above the previous record low for the same date, set in 2007.
    • Air temperatures were up to 4 degrees Celsius higher than average (relative to the 1981 to 2010 climatology) over the Arctic Ocean (measured about 1km above the surface).
    • The ice will continue to melt for another couple of weeks.
    • Monthly August ice extent for 1979 to 2011 shows a decline of 9.3% per decade.

Sea ice data updated daily, with one-day lag. Orange line in extent image (left) and gray line in time series (right) indicate 1979 to 2000 average extent for the day shown. Click for high-resolution image. Credit: National Snow and Ice Data Center (NSIDC)

Monthly August ice extent for 1979 to 2011 shows a decline of 9.3% per decade. Credit: NSIDC

Other Disasters

Texas Wildfire Stats (issued by TFS)

  • Date: Wednesday, September 7, 2011
  • National Preparedness Level: 3
  • Southern Area Preparedness Level: 4
  • TFS Preparedness Level: 5
  • “Yesterday Texas Forest Service responded to 19 new fires for 1,490 acres, including new large fires in Red River and Rusk counties. In the past seven days Texas Forest Service has responded to 172 fires for 135,051 acres.”
  • “An assessment has been completed on the Bastrop County Complex and 785 homes have been reported destroyed. An additional 238 have been reported lost on other fires in the past three days, for a total of approximately 1,023.”

  • Texas governor Rick Perry is on record as saying climate change  is essentially a hoax:
    • “I just happen to believe the Earth’s temperature has been moving up and down for millenniums now.” Claiming that scientists disagree on the cause he added, “I happen to be one who is skeptical.”
    • “To spend billions of dollars” addressing an issue like that, Perry said, is “not in America’s best interests.
    • “I think there are a substantial number of scientists who have manipulated data so that they will have dollars rolling into their projects. And I think we are seeing almost weekly, or even daily, scientists are coming forward and questioning the original idea that man-made global warming is what is causing the climate to change. I don’t think, from my perspective, that I want America to be engaged in spending that much money on still a scientific theory that has not been proven, and from my perspective, is more and more being put into question.” Perry said.
    • In April Perry issued an official proclamation asking “Texans of all faiths and traditions” to pray for rain over the three-day Easter weekend.
    • “Now, therefore, I, Rick Perry, governor of Texas, under the authority vested in me by the Constitution and Statutes of the State of Texas, do hereby proclaim the three-day period from Friday, April 22, 2011, to Sunday, April 24, 2011, as Days of Prayer for Rain in the State of Texas,” the proclamation, posted on the governor’s website, began.
    • Perry should know that prayers without a “vow of repentance,” a “plea for forgiveness” and a “promise of abstinence” invariably backfire, in his case literally!

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Posted in environment, global deluge, global disasters | Tagged: , , , | 1 Comment »

Arctic ice cover third-smallest area on record

Posted by feww on September 18, 2009

Data reinforces strong negative trend in summertime Arctic sea ice cover

Arctic sea ice cover seems to have reached its minimum extent for 2009, said the National Snow and Ice Data Center (NSIDC), its third-lowest extent on record (the satellite measurements began in 1979). “While this year’s minimum extent is above the record and near-record minimums of the last two years, it further reinforces the strong negative trend in summertime ice extent observed over the past thirty years.”

arctic ice 12-09-09
Daily Arctic sea ice extent on September 12 was 5.10 million square kilometers (1.97 million square miles). The orange line shows the 1979 to 2000 median extent for that day. The black cross indicates the geographic North Pole. Credit: National Snow and Ice Data Center

Summary of Conditions

Arctic sea ice cover fell to 5.10 million square kilometers (1.97 million square miles) on September 12, 2009, which appears to have been the lowest point of the year, since sea ice has now entered  its annual growth growth due to autumn cooling. “The 2009 minimum is the third-lowest recorded since 1979, 580,000 square kilometers (220,000 square miles) above 2008 and 970,000 square kilometers (370,000 square miles) above the record low in 2007.” NSIDC reported.

The 2009 minimum ice cover

  • 1.61 million square kilometers (620,000 square miles) below the 1979 to 2000 average minimum and
  • 1.28 million square kilometers (490,000 square miles) below the thirty-year 1979 to 2008 average minimum.

ice exten curve
The graph above shows daily sea ice extent as of September 15, 2009. The solid light blue line indicates 2009; dark blue shows 2008, dashed green indicates 2007; light green shows 2005, and solid gray indicates average extent from 1979 to 2000. The gray area around the average line shows the two standard deviation range of the data. Sea Ice Index data. Credit: National Snow and Ice Data Center

Conditions in context

This year, the minimum extent did not fall as low as the minimums of the last two years, because temperatures through the summer were relatively cooler. The Chukchi and Beaufort seas were especially cool compared to 2007. Winds also tended to disperse the ice pack over a larger region.

While the ice extent this year is higher than the last two years, scientists do not consider this to be a recovery. Despite conditions less favorable to ice loss, the 2009 minimum extent is still 24% below the 1979-2000 average, and 20% below the thirty-year 1979-2008 average minimum. In addition, the Arctic is still dominated by younger, thinner ice, which is more vulnerable to seasonal melt. The long-term decline in summer extent is expected to continue in future years.

arctic ice difference
This image compares differences in ice-covered areas between September 12, 2009, the date of this year’s minimum, and September 16, 2007, the record low minimum extent. Light gray shading indicates the region where ice occurred in both 2007 and 2009, while white and dark gray areas show ice cover unique to 2009 and to 2007, respectively. Sea Ice Index data. About the data. Credit: National Snow and Ice Data Center

Comparison of the 2009 and 2007 September minima

The spatial pattern of the 2009 minimum extent was different than that of 2007, partly because of differing wind patterns. Compared to this year, 2007 had substantially more ice loss in the central Arctic, north of the Chukchi and East Siberian Seas because winds pushed ice in these regions northward. However, this year the Arctic lost more ice in the Beaufort Sea than 2007 because of southwesterly winds pushing the ice edge toward the northeast. Overall, the pattern of ice loss is similar to 2008 (not shown), although it resulted from different atmospheric circulation patterns.

Once again this year, the Northern Sea Route through the Arctic Ocean along the coast of Siberia opened. Although some ice remained in certain regions, two German ships managed to navigate the passage with Russian icebreaker escorts. Russian vessels have traversed the passage many times over the years, but as ice extent drops there is more interest from other nations. As in 2008, the shallow Amundsen’s Northwest Passage briefly opened, but the deeper Parry’s Channel of the Northwest Passage did not. In 2007, both channels were open.

Notes on interpretation of  “minimum”

To overcome the seasonal variability of sea ice, NSIDC uses a five-day running mean value to decide the minimum cover. “We have now seen four days of gains in extent. It is still possible that ice extent could fall slightly, because of either further melting or a contraction in the area of the pack due to the motion of the ice.”

“For example, in 2005, the time series began to level out in early September, prompting speculation that we had reached the minimum. However, the sea ice contracted later in the season, again reducing sea ice extent and causing a further drop in the absolute minimum. When all the data for September are in, we will confirm the minimum ice extent for the season.” NSIDC said.

Final analysis pending

NSIDC says it will issue a formal press release in early October, “with full analysis of the melt season, and graphics comparing this year to the long-term record.”  They will also report the monthly average September sea ice cover, “the measure scientists rely on for accurate analysis and comparison over the long term. ” They will also  continue to report  their analysis of sea ice conditions as frequently as the changing sea ice conditions demands. They will also continue to update their near-real-time daily image of the ice extent.

How does the loss of ice cover affect us and other animals?

  • Pristine Arctic regions would be spoiled by additional shipping, as new maritime routes open.
  • The Arctic ice cap, regulats Earth’s climate system by reflecting sunlight back into space, among other functions.
  • Less ice also means darker, more sunlight-absorbing sea surface which additionally accelerate the climate change positive feedback loop, contributing to chaotic climate patterns.
  • Polar bears and many marine species lose their habitats.
  • Warmer [and dirtier] waters increase mosquito reproduction, which in turn increase the incidence of infectious diseases.
  • For other damaging effects, see links below.

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Posted in Amundsen's Channel, atmospheric circulation pattern, Beaufort sea, Chukchi Sea, East Siberian Sea, ice cover comparison, Northwest Passage, polar bears, shrinking polar cap | Tagged: , , , , , , | Leave a Comment »