Polar Push & Bounce Back -Trends at the Extremes NEW ZT

**NEW ZETATALK**

This blog is about the Arctic,Antarctica and Extreme Northern/Southern Hemispheres.  Are New Trends happening at the Poles? Weather Patterns, Charts, Images and Unusual Anomalies may be telling us something!

According to the Zetas,  the Wobble Effect has now combined with a new Polar Push!!  

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https://poleshift.ning.com/forum/topics/zetatalk-chat-for-november-...

Both poles the sea ice loss is off the charts this month!  Seems something has changed?
[and from another] Is it related to the warming of the oceans from the bottom and the wobble? Where will this lead?[and from another]
https://www.wunderground.com/blog/JeffMasters/crazy-cryosphere-reco...
Sea ice extent and area have both plummeted to record lows for this time of year in both the Arctic and Antarctic. Such dramatic losses rarely occur at the same time, which means that the global total of sea ice coverage is phenomenally low for this time of year. The weirdness extends to midlatitudes: North America as well as the Arctic have been bathed in unusual mildness over the last several weeks, while Eurasia deals with a vast zone of above-average snowfall and below-average temperatures. [and from another]
https://www.theguardian.com/environment/2016/nov/22/extraordinarily...



SOZT
It is clear from the charts that the Earth wobble has increased. First, despite Siberia being on the same latitude with Eastern Canada and Europe, there are vast temperature differences. The globe around the Arctic seems to be divided in half in this way at the current time. Just months ago, in July,
http://www.zetatalk.com/ning/23jy2016.htm
we stated that the hot and cold regions in the Northern Hemisphere were divided into four parts, due to the Polar Push and Bounce Back, and the lean to the Left and Right. Now the increased wobble has created a duality, not the quadrant arrangement of the Figure 8 that had been present since 2004.  

The Polar Push wherein the N Pole of Earth is shoved away from the approaching N Pole of Nibiru continues to create cold temperatures in Siberia, where the magnetic N Pole of Earth currently resides. This has also warmed Antarctica, which is getting more sunlight.  The Bounce Back is more fierce, so that Europe and eastern N America are also getting more sunlight, and thus the melting Arctic. What is missing is the temperature anomalies due to the tilt to the Left and Right. They have been lost in the more aggressive back and forth motion of the Polar Push and Bounce Back.  
EOZT

Prior ZT: http://www.zetatalk.com/ning/23jy2016.htm
The weather maps continue to document the daily Earth wobble, showing abnormal heat over the N American southwest and up into Alaska, and abnormal heat through Europe. Both these regions come under more equatorial sun due to the wobble, due to the lean to the left and then to the right. This is distinctly balanced by cold spots in between. Canada’s eastern provinces and the region above Hudson Bay receive less sunlight due this tilt to one side and then the other. Russia’s Far East and the Siberian region above China of course are pushed into the cold by the daily Polar Push, when the N Pole of Nibiru shoves the Earth magnetic N Pole away.

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The Polar Push Effect:

http://zetatalk.com/index/zeta103.htm

 

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Ecliptic Rise

http://www.zetatalk.com/index/earthtil.htm

Planet X approaches from the south, and the Pole Shift occurs because the S. Pole is pulled north with the N. Pole of Planet X during the passage. This stress is already evident in that many have noted that the Sun is too far south, rising too far to the south, for the time of year. Possible explanations for this are that the S. Pole has been pulled toward Planet X, creating a different tilt, but the constellations seem to be in their proper place. An alternate explanation is that the Earth's plane of the Ecliptic has changed, rising up, putting the Northern Hemisphere into a different slant, and placing the S. Pole more in line with the N. Pole of Planet X, an alignment Magnets Prefer.    

Natives to the Arctic,  the Inuit years ago already noticed many changes:

Uqalurait: the Snow is Speaking
November 23, 2009
http://www.isuma.tv/hi/en/inuit-knowledge-and-climate-change/uqalur...

An Igloolik elder, describes that uqalurait are changing because the earth itself has "tilted" and has thrown off the consistent wind patterns of the past. The earth tilting on its axis is another re-occuring observation that we are hearing from Inuit, which they know because of how the sun, moon and stars have changed in the sky. Indeed, elders simultaneously know the complexities of the cosmos, land, wind and sky.

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Both Poles are affected!

https://www.wunderground.com/blog/JeffMasters/crazy-cryosphere-reco...

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The Zetas describe the Final Days of the Wobble:

http://www.zetatalk.com/index/zeta582.htm

During the last weeks, the Earth changes from being in an end-to-end alignment with Planet X to being in a side-by-side alignment. It is during the end-to-end alignment, when Planet X is pointing its N Pole directly at the Earth, that the lean to the left and 3 days of darkness occur. But as Planet X continues in its retrograde orbit, its N Pole is no longer coming from the right, but is located to the left of the Earth, and the Earth adjusts by slinging its N Pole to the right. Thus, during the 6 days of sunrise west, the Earth still has its N Pole tipped away from the Sun and the approaching Planet X, but rather than a lean to the left, it has a lean to the right.
 
It is at this point that the Earth switches from being in an end-to-end alignment to being in a side-by-side alignment with Planet X. When Planet X is just at the Ecliptic, it stands upright in alignment with the Sun. As it switches from pointing its N Pole at Earth the Earth follows suit.
ZetaTalk: September 12, 2009

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Some charts to follow and/or post in this blog are HERE:

Climate ReAnalyzer

http://cci-reanalyzer.org

Google has the biggest collection of charts to view/post here!

https://sites.google.com/site/arcticseaicegraphs/

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NEW ZETATALK SEPT 30, 2017 **

http://zetatalk.com/ning/30sp2017.htm

With a stronger Polar Push the bounce back would likewise be more extreme, and the bounce back occurs when the Sun is over the Atlantic.  As the wobble continued to get worse, the Figure 8 corrective lean to the right and left also got more extreme. This sets the stage for the current 2017 hurricane season.

(Modified Earth images are from Google Earth)

Sunlight on Earth reflection based on image in the Planet X Related Captures Blog

The Figure 8 of the wobble creates a churning in the Atlantic:

1.) First land on either side of the Atlantic is pushed under water during the Polar Push,

2.) Then the N American Continent is slung to the East

3.) Then to the West as the day dawns and

4.) Then the bounce back pulls this land back up to the North. 

The wobble, in short, is churning the North Atlantic in a circular motion. Where this fits with the Coriolis effect, where the winds and water curl up from the Equator in a circular motion, moving clockwise in the Northern Hemisphere, the lean to the left does a direct clash, pushing the storm back in a path toward the US coastline.

This is the current Wobble pattern, but the Wobble is subject to change:

5.) A lean into Opposition has occurred, the N Pole leaning toward the Sun. **NEW LEAN**

6.) And a temporary Lean to the Left could occur,

7.) as well as a temporary Day of Darkness for the Northern Hemisphere.

This is not a static situation. (this will occur more than once, in other words).

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Comment by SongStar101 on April 2, 2022 at 11:28am

Both of the planet's poles experience extreme heat, and Antarctica breaks records

https://www.npr.org/2022/03/19/1087752486/antarctica-record-heat-ar...

Earth's poles are undergoing simultaneous freakish extreme heat with parts of Antarctica more than 70 degrees (40 degrees Celsius) warmer than average and areas of the Arctic more than 50 degrees (30 degrees Celsius) warmer than average.

Weather stations in Antarctica shattered records Friday as the region neared autumn. The two-mile high (3,234 meters) Concordia station was at 10 degrees (-12.2 degrees Celsius),which is about 70 degrees warmer than average, while the even higher Vostok station hit a shade above 0 degrees (-17.7 degrees Celsius), beating its all-time record by about 27 degrees (15 degrees Celsius), according to a tweet from extreme weather record tracker Maximiliano Herrera.

The coastal Terra Nova Base was far above freezing at 44.6 degrees (7 degrees Celsius).

It caught officials at the National Snow and Ice Data Center in Boulder, Colorado, by surprise because they were paying attention to the Arctic where it was 50 degrees warmer than average and areas around the North Pole were nearing or at the melting point, which is really unusual for mid-March, said center ice scientist Walt Meier.

"They are opposite seasons. You don't see the north and the south (poles) both melting at the same time," Meier told The Associated Press Friday evening. "It's definitely an unusual occurrence."

"It's pretty stunning," Meier added.

"Wow. I have never seen anything like this in the Antarctic," said University of Colorado ice scientist Ted Scambos, who returned recently from an expedition to the continent.

"Not a good sign when you see that sort of thing happen," said University of Wisconsin meteorologist Matthew Lazzara.

Lazzara monitors temperatures at East Antarctica's Dome C-ii and logged 14 degrees (-10 degrees Celsius) Friday, where the normal is -45 degrees (-43 degrees Celsius): "That's a temperature that you should see in January, not March. January is summer there. That's dramatic."

Experts advise it's not clear whether the record heat is indeed part of climate change

The Antarctic warm spell was first reported by The Washington Post.

The Antarctic continent as a whole on Friday was about 8.6 degrees (4.8 degrees Celsius) warmer than a baseline temperature between 1979 and 2000, according to the University of Maine's Climate Reanalyzer, based on U.S. National Oceanic Atmospheric Administration weather models. That 8-degree heating over an already warmed-up average is unusual, think of it as if the entire United States was 8 degrees hotter than normal, Meier said.


At the same time, on Friday the Arctic as a whole was 6 degrees (3.3 degrees) warmer than the 1979 to 2000 average.

By comparison, the world as a whole was only 1.1 degrees (0.6 degrees Celsius) above the 1979 to 2000 average. Globally the 1979 to 2000 average is about half a degree (.3 degrees Celsius) warmer than the 20th century average.

What makes the Antarctic warming really weird is that the southern continent — except for its vulnerable peninsula which is warming quickly and losing ice rapidly — has not been warming much, especially when compared to the rest of the globe, Meier said.

Antarctica did set a record for the lowest summer sea ice — records go back to 1979 — with it shrinking to 741,000 square miles (1.9 million square kilometers) in late February, the snow and ice data center reported.

What likely happened was "a big atmospheric river" pumped in warm and moist air from the Pacific southward, Meier said.

And in the Arctic, which has been warming two to three times faster than the rest of the globe and is considered vulnerable to climate change, warm Atlantic air was coming north off the coast of Greenland.

Comment by SongStar101 on July 5, 2020 at 12:58am

100-Degree Fahrenheit Temperature Confirmed in Siberia; 90s Measured at Russian Arctic Coast

https://weather.com/news/climate/news/2020-07-02-russia-100-degree-...

At a Glance

  • One city in northern Russia soared to 100 degrees Fahrenheit on June 20.
  • This extreme temperature record was confirmed by a Russian met agency Tuesday.
  • On June 30, a location along Russia's Arctic coast soared into the 90s.
  • These temperatures may be the hottest on record anywhere in the Arctic.
  • Siberia has seen the planet's largest temperature anomalies so far in 2020.
  • This is an area more known for its extreme winter cold, rather than searing heat.

Russian meteorologists have confirmed a Siberian town smashed its all-time record high during a June heat wave, possibly the hottest temperature on record so far north in the Arctic, continuing an off-the-charts warm year in what is typically one of coldest places on Earth.

On June 20, the high temperature in Verkhoyansk, a town in northeast Russia about 260 miles south of the Arctic coast and about 6 miles north of the Arctic Circle, topped out at 38 degrees Celsius, or 100.4 degrees Fahrenheit.

This extreme temperature was confirmed by the Russian Federal Service for Hydrometeorological and Environmental Monitoring after a request from the World Meteorological Organization, topping the city's previous record set on July 25, 1988. Temperature records in Verkhoyansk date to 1885.

It may also have been the hottest temperature on record north of the Arctic Circle, according to Etienne Kapikian, a meteorologist with Meteo France.

The average high in late June in Verkhoyansk is only in the upper 60s, or around 20 degrees Celsius.

Let that soak in for a moment.

Siberia, one of the world's coldest places in winter, reached 100 degrees (F) this year before Dallas or Houston did.

To escape the heat, children were seen swimming in a lake near Verkhoyansk, Sunday, a lake that would be frozen solid in the depths of winter, when average temperatures in Russia's "Pole of Cold" typically plunge into the minus 40s and 50s Celsius.

Verkhoyansk once plunged to minus 67.8 degree Celsius - minus 90 degrees Fahrenheit - on Feb. 5 and 7, 1892.

This is 105.8 degrees Celsius colder than its just-recorded all-time record high. That's a difference in extremes larger than the difference between water's freezing and boiling points, likely the largest spread between all-time record high and low temperatures anywhere on Earth.

That wasn't the only eye-popping extreme of this June Russian heat wave.

Ten days later, Ust'-Olenek, Russia, soared to 34.3 degrees Celsius (93.7 degrees Fahrenheit). The average high temperatures, there, are only around 10 to 12 degrees Celsius (50 to 54 degrees Fahrenheit), according to meteorologist Scott Duncan.

This town on Russia's Arctic coast about 2,500 miles northeast of Moscow and over 400 miles north of the Arctic Circle may have registered the farthest north Arctic 90-degree temperature on record, according to an analysis by Alaska-based climatologist Brian Brettschneider.

The following day, Ust'-Olenek only dropped to a low of 22.6 degrees Celsius (72.7 degrees Fahrenheit), on par with an average low temperature in parts of the United States in July.

Expansive blocking high pressure aloft over Siberia was responsible for this latest heat wave, which has been in place since mid-June.

This blocking high hasn't allowed colder air to push south from Russia's Arctic coast.

comments

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#Arctic sea ice extent near Siberia remains well below any previous year in the satellite era record...

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Extremely hot again on the fringe of the Arctic Ocean. An astonishing + 34 °C has just been recorded at a latitude of 73 °N today in Russia. This is about + 20-25 °C warmer than normal. Note how much open water there is compared to normal. Sea ice is taking a hit.

Comment by M. Difato on May 22, 2020 at 3:31pm

Climate change turning Antarctica “green” as algae blooms proliferate

https://en.mercopress.com/2020/05/22/climate-change-turning-antarct...

Antarctica conjures images of an unbroken white wilderness but blooms of algae are giving parts of the frozen continent an increasingly green tinge. Warming temperatures due to climate change are helping the formation and spread of “green snow” and it is becoming so prolific in places that it is even visible from space, according to new research.

While the presence of algae in Antarctica was noted by long-ago expeditions, such as the one undertaken by British explorer Ernest Shackleton, its full extent was unknown.

Now, using data collected over two years by the European Space Agency's Sentinel 2 satellite, together with on-the-ground observations, a research team from the University of Cambridge and the British Antarctic Survey have created the first map of the algae blooms on the Antarctic Peninsula coast.

“We now have a baseline of where the algal blooms are and we can see whether the blooms will start increasing as the models suggest in the future,” Matt Davey of the University of Cambridge's Department of Plant Sciences said..."  

"..Green is not the only splash of color in Antarctica. Researchers are now planning similar studies on red and orange algae, although that is proving harder to map from space.

~

https://www.bbc.com/news/science-environment-52737603?intlink_from_...

"..Detecting the green algae from space was a tricky task.

While it's easy to spot the organisms' discolouration when walking in the snow on the ground, from orbit it becomes much harder to tease out the blooms' signal against what is a highly reflective surface.

Fortunately for the team, the European Union's Sentinel-2 spacecraft have high-fidelity detectors that are sensitive in just the right part of the light spectrum to make the observation.

The study mapped the Antarctic Peninsula, the finger of land which points up from the White Continent towards South America. The blooms are seen predominantly to be on the western side of this feature. Two-thirds were on the many islands that dot the coastline.."

Comment by SongStar101 on July 12, 2019 at 12:17am

Alaska’s exceptional heat wave delivers state’s hottest days on record

https://www.washingtonpost.com/weather/2019/07/09/alaskas-exception...

A satellite view of Alaska on Sunday shows clear skies and smoke from several large fires. (NASA Today)

A heat wave for the record books has roasted our 49th state, sending temperatures into uncharted territory.

Over the weekend, boosted by historic heat in the southern part of the state, Alaska’s average temperature surged to its highest level ever recorded on back-to-back days.

[A giant heat dome over Alaska is set to threaten all-time temperatu...]

“It is likely that Saturday, July 6, 2019, was the warmest day on record statewide (at least in the last 100 years)," tweeted Alaska climatologist Brian Brettschneider. But, he continued, “this distinction only lasted 1 day as Sunday was even warmer!”

Southern Alaska has been the epicenter of the heat. Anchorage posted its hottest day on record Thursday, hitting 90 degrees, and then twice matched its previous all-time highest temperature of 85 degrees Sunday and Monday, notching its warmest week on record in the process. To top or tie an all-time record three times in five days is practically unheard of.

Through Monday, Anchorage had hit 80 degrees or higher six days in row, doubling the previous longest streak of three. Its average temperature over the past 12 days is five degrees higher than any comparable stretch on record.

So far this month, its average temperature is an astounding 12.4 degrees above normal.

Anchorage has logged eight days of 80 degrees or higher this year, doubling the old record of four from 2015. Tuesday’s temperatures should flirt with 80 once again.

www.washingtonpost.com/pb/resources/img/spacer.gif"/>
A map of temperatures compared with normal over the past five days highlights extreme warmth in Alaska. (Weatherbell.com)

Anchorage isn’t alone. It’s a similar story in Juneau, where there have also been eight 80-degree-or-higher days in 2019. This ties 2009 for second most in a year, with the top spot held by 2004, when there were 12 such days.

Other places in southern Alaska that have seen historically high temperatures, especially in the past week, include Kenai, King Salmon and Kodiak.

[Record-crushing heat torches Alaska as Anchorage hits all-time high...]

Alaska climatologist Rick Thoman gathered a list of what he calls the “headline” numbers so far, including all-time and July record high temperatures set since June 30 (it is not a comprehensive list).

The Alaskan heat wave is easing, but it’s not over. The days ahead feature temperatures dropping from record warm to very warm.

Longer-term outlooks generally predict that the warmth will persist, with above-normal readings likely to continue. This is very much in keeping with trends in a warming world.

In recent months and years, abnormally warm weather has seemingly become the new normal in Alaska. As the latest example, the National Oceanic and Atmospheric Administration announced Tuesday that the state had posted its second-warmest June ever recorded.

Comment by SongStar101 on May 23, 2019 at 2:56pm

Nearly 25% of West Antarctic Ice in Danger of Collapse

https://www.livescience.com/65524-antarctica-ice-unstable.html

Glaciers and ice sheets in Antarctica have thinned and weakened dramatically over the past quarter-century, leaving 24% of the ice in the western part of the continent seriously weakened and in danger of collapse.

In some places on Antarctica, glaciers have thinned by approximately 400 feet (122 meters). This staggering loss has little to do with weather fluctuations; rather, it unfolded over decades as Earth's climate warmed, scientists reported in a new study.

And that ice loss is accelerating. The researchers found that West Antarctica's two biggest glaciers — Thwaites and Pine Island — are melting away five times faster now than they were at the beginning of the survey, in 1992. [Antarctica: The Ice-Covered Bottom of the World (Photos)]

To determine these ice changes, the scientists examined regional climate models and satellite data spanning 25 years, they reported May 16 in the journal Geophysical Research Letters.

They consulted 800 million measurements of ice sheet height in Antarctica, recorded between 1992 and 2017 by the European Remote Sensing (ERS) satellites ERS-1 and ERS–2, the Earth-observing satellite Envisat and the environmental research satellite CryoSat-2. All of the satellites were deployed by the European Space Agency.


This map shows changes to the Antarctic ice sheet’s thickness from 1992 to 2017. 

This map shows changes to the Antarctic ice sheet’s thickness from 1992 to 2017. 
Credit: Shepherd et al 2019/Geophysical Research Letters/AGU

Using these measurements, the researchers calculated the volume of Antarctica's ice mass separately from the fluctuating blankets of snowfall that accumulates and recedes in seasonal cycles, determining snowfall volume through computer simulations.

The scientists found that significant areas of the ice sheets across Antarctica showed signs of severe weakness, or "dynamical imbalance." This dynamical imbalance was most widespread in West Antarctica, destabilizing more than 160,000 square miles (415,000 square kilometers) of ice; and the lost mass wasn't being replenished by snowfall.

In the Antarctic Peninsula — the spike of land that extends northward from West Antarctica — an estimated 6,900 square miles (17,900 square km) of ice is also dangerously unstable, as is about 22,000 square miles (57,000 square km) of ice in East Antarctica, according to the study.

"Knowing how much snow has fallen has really helped us to detect the underlying change in glacier ice within the satellite record," said lead study author Andy Shepherd, director of the Centre for Polar Observation and Modeling in the United Kingdom.

"We can see clearly now that a wave of thinning has spread rapidly across some of Antarctica's most vulnerable glaciers, and their losses are driving up sea levels around the planet," Shepherd said in a statement.

Since 1992, melting ice in Antarctica alone has led to sea-level rise of about 0.2 inches (5 millimeters). That may not sound like much, but with the pace of ice melt accelerating — and with Antarctica holding Earth's biggest reserve of frozen, landlocked water — the prospect of much greater sea-level rise is looming, the scientists wrote.

Comment by SongStar101 on April 25, 2019 at 11:14pm

Greenland Is Falling Apart

Since 1972, the giant island’s ice sheet has lost 11 quadrillion pounds of water.

https://www.theatlantic.com/science/archive/2019/04/how-much-ice-ha...

The Greenland Ice Sheet is the world’s second-largest reservoir of fresh water sitting on the world’s largest island. It is almost mind-bogglingly huge.

If Greenland were suddenly transported to the central United States, it would be a very bad day for about 65 million people, who would be crushed instantly. But for the sake of science journalism, imagine that Greenland’s southernmost tip displaced Brownsville, Texas—the state’s southernmost city—so that its icy glaciers kissed mainland Mexico and the Gulf thereof. Even then, Greenland would stretch all the way north, clear across the United States, its northern tenth crossing the Canadian border into Ontario and Manitoba. Kansas City, Oklahoma City, and Iowa City would all be goners. So too would San Antonio, Memphis, and Minneapolis. Its easternmost peaks would slam St. Louis and play in Peoria; its northwestern glaciers would rout Rapid City, South Dakota, and meander into Montana. At its center point, near Des Moines, roughly two miles of ice would rise from the surface.

Suffice it to say: The Greenland Ice Sheet, which contains enough water to refill the Great Lakes 115 times over, is very large. And it is also falling apart.

A new study finds that the Greenland Ice Sheet added a quarter inch of water to global sea levels in just the past eight years. The research, published Monday in the journal Proceedings of the National Academy of Sciences, covers nearly 20 years previously not included in our detailed understanding of the troubled Greenland Ice Sheet. It finds that climate change has already bled trillions of tons of ice from the island reservoir, with more loss than expected coming from its unstable northern half.




“The glaciers are still being pushed out of balance,” Eric Rignot, a senior scientist at NASA and an author of the paper, told me. “Even though the ice sheet has [sometimes] been extremely cold and had low surface melt in the last year, the glaciers are still speeding up, and the ice sheet is still losing mass.”

The paper casts the transformation of the Greenland Ice Sheet as one of the profound geological shifts of our time. Scientists measure the mass of ice sheets in “gigatons”—each unit equal to 1 billion metric tons, or roughly the same amount of water that New York or Los Angeles uses in a year. Greenland, according to the study, has lost 4,976 gigatons of water since 1972. That’s enough water to fill 16 trillion bathtubs or 1.3 quadrillion gallon jugs. That much water weighs about 11 quadrillion pounds. (A quadrillion is 1 with 15 zeros after it.)

More worryingly, the paper finds that Greenland lost about half of that ice—roughly 2,200 gigatons—in the years between 2010 and 2018. The ice sheet has also failed to gain mass in any year since 1998.

This melting isn’t happening at a steady pace, in other words. Greenland’s demise seems to be accelerating. Think of Greenland as a huge inland ice sea, surrounded by faster-moving ice rivers (which are glaciers) that empty the sea and carry ice to the ocean. The paper finds that those rivers are speeding up, carrying ice out of the island’s core nearly twice as fast now as they did in the 1990s or 2000s.

That’s an alarming result, because it means glaciers might now be shrinking Greenland from the bottom faster than hot weather can melt it from the top. And researchers believe that bottom-melting glaciers are less stable and more prone to rapid collapse. “If there’s a risk of rapid sea-level rise in the future, it will be associated with glaciers speeding up, and not anything happening at the surface,” Rignot said.

The paper’s findings are stirring in part because they go much further back in time. “A lot of the publications [about Greenland’s mass] start in 2000 or 2002, some go back to 1992, but this is the first time we go back another 20 years,” Rignot said. Historically, most studies of Greenland combine data from radar flybys, GPS beacons, and laser or gravity-sensing satellites. But there’s not enough data from before 1992 to be useful, so that’s when estimates usually stop.

Rignot and his colleagues helped hit upon a new resource. The U.S. Geological Survey’s Landsat satellites have circled the planet nonstop since 1972, imaging every speck of land on Earth every 16 days. This archive—which is a kind of Earth-science version of taking a photo of yourself every day for years—includes hundreds of images of Greenland. Rignot and his team taught a computer how to read those pictures of its icy surface, zooming in especially on the dozens of glaciers that connect the interior ice sheet to the sea.


“It’s looking at two different pictures of a glacier, before and after. [In each frame,] the rocks don’t move but the glacier moves, so it can compare and cross-correlate image points,” Rignot said. “Then the algorithm searches around the window for where the pixel might have gone.”

The team ultimately used this technique to calculate the speed of Greenland’s glaciers from 1972 to 1992. Then they combined that data with modern observations of the ice sheet to estimate its historical mass. (They used a similar method to estimate Antarctica’s ice loss in a paper published earlier this year.)

Rignot and his colleagues relied on another new resource too: OMG!

As in, literally, the project is named OMG, short for Oceans Melting Greenland. OMG is a five-year NASA mission, started in 2016, to study how warmer oceans are eroding Greenland’s waterfront glaciers. Rignot helps lead it. “Thanks to OMG, we’ve been able to construct a [bedrock] model of Greenland that is pretty good under the ice, and is very, very good underneath the ocean,” he said.

Brad Lipovsky, a glaciologist at Harvard who was not connected to the research, said in an email that the results “seem plausible at first glance,” but that scientists would need to carefully check some of the team’s methodology. The overall story of Greenland, he said, is that the ice sheet’s flow is slowly accelerating. This “makes sense,” he said, “because it takes the slowly flowing ice sheet a lot longer to respond than the rapidly evolving atmosphere.”

Rignot believes that the new study should make glaciologists look anew at the speed with which Greenland could collapse. The ice sheet’s bleeding-out could eventually raise global sea levels by as much as 25 feet. So the key question, Rignot said, is “How fast can you make these entities fall apart?” The answer will matter to all of us. The surface of Greenland doesn’t have to move through magic to other parts of the world—already, today, its deluge is on its way.


Comment by SongStar101 on April 16, 2019 at 2:02pm

Arctic is warmest it's been in 10,000 years, study suggests

Permafrost samples suggest Arctic is 2 C warmer than previous record highs thousands of years ago

CBC News · Posted: Apr 12, 2019 4:00 AM CT | Last Updated: April 12
A polar bear wanders along Hudson Bay. New research suggests the Arctic is warmer than at any time in the past 10,000 years. (iStock)

New research suggests Canada's Arctic is the warmest it has been in 10,000 years — and the temperatures are still climbing.

The study was recently published in the scientific journal Nature Communications.

Researchers studied permafrost samples in the Yukon near the Dempster Highway and determined that temperatures in the Arctic today are almost 2 C warmer than at any time in the past 10,000 years.

The temperatures recorded today are even higher than the previous highs believed to have occurred during the early Holocene period, about 9,900 and 6,400 years ago, when Earth's axis was tilted more strongly toward the sun, the report states.

Duane Froese, a professor at the University of Alberta and a co-author of the study, suggests that time period may actually be much longer.

"I would guess we're getting back over 100,000 years since we've seen temperatures at least this warm," he said.

Research shows warming Arctic 

This study adds to the growing research showing dramatic warming in the Arctic.

Last month, the UN released its environment report on the Arctic, which describes scenarios where Arctic winter temperatures increase by three to five degrees by 2050 compared to 1986-2005.

Permafrost thaw is altering the western Arctic landscape on Banks Island. Researcher Duane Froese predicts there will be more instances of permafrost melt as the temperatures warm. (Submitted by Antoni Lewkowicz.) 

Another study, published earlier this week, suggests the Arctic will no longer look the same, with greening tundra and warmer winters.

But people living in the Arctic are already taking action.

The Vuntut Gwich'in First Nation in Old Crow, Yukon, is set to declare a state of emergency due to climate change as they watch the effects unfold firsthand in their community. That includes rising temperatures, less snow cover, warmer winters and thawing permafrost.

Froese says these effects will only continue, especially as the permafrost melts, which may happen more slowly or less dramatically than melting glaciers.

"Permafrost behaves a bit different," Froese said. "It has all the insulation of the vegetation and soil on the surface of it that slows the penetration of heat into the ground.

"Particularly in the western Arctic, we're starting to see big, big changes from those warmer temperatures and melting permafrost."

Comment by SongStar101 on March 28, 2019 at 10:12pm

"Complete Collapse": Iceberg Twice The Size Of NYC Set To Break Off Antarctica

https://www.zerohedge.com/news/2019-02-28/complete-collapse-iceberg...

Dangerous cracks developing across Antarctica’s Brunt Ice Shelf are due to unleash a massive iceberg twice the size of New York City, according to NASA researchers who warn when it breaks, it could destabilize the entire shelf.

NASA recently released images acquired by Landsat satellites of Antarctica’s Brunt Ice Shelf, where a rift is visibly slicing through the shelf. Researchers said the crack had been stable for more than three decades, but since, has been moving north at about 2.5 miles per year.

  • “The near-term future of Brunt Ice Shelf likely depends on where the existing rifts merge relative to the McDonald Ice Rumples,” said Joe MacGregor, a glaciologist at NASA’s Goddard Space Flight Center. “If they merge upstream (south) of the McDonald Ice Rumples, then it’s possible that the ice shelf will be destabilized.”

The rift is moving toward another fissure, as known as Halloween crack, that is located 3 miles away. Halloween crack was first discovered in 2016, continues to move east, and when the two rifts intersect in the very near term, an iceberg is formed measuring 660 square miles.

“We don’t have a clear picture of what drives the shelf’s periods of advance and retreat through calving,” said NASA/UMBC glaciologist Chris Shuman.

“The likely future loss of the ice on the other side of the Halloween Crack suggests that more instability is possible."

Researchers are puzzled on what drives this process, known as calving, could mean the health of the shelf is in immediate danger.

“At worst, this calving could destabilize the remainder of the Brunt Ice Shelf leading to its complete collapse,” Dominic Hodgson, a senior scientist at the British Antarctic Survey, told NBC News Tuesday in an email.

“This would then likely be followed by an acceleration of ice in the upstream glaciers, increasing their contribution to sea level.”

Calving is a natural part of the life cycle of ice shelves, but recent rifts forming in the region are unusual. The edge of the Brunt Ice Shelf has evolved since Ernest Shackleton surveyed the coast in 1915, but in the last several years, the speed of its transformation has been accelerated.

The risk of the 660 square mile shelf breaking off has prompted safety concerns for researchers working in the area, particularly researchers at the British Antarctic Survey’s Halley Station, a major base for Earth, atmospheric, and space science research typically operates year-round, but has recently closed operations due to unpredictable changes in the ice.

If the converging cracks destabilize the ice shelf even further, a massive iceberg twice the size of New York City could soon be soon floating in the South Atlantic Ocean.

Comment by SongStar101 on March 21, 2019 at 12:28pm

Various ocean areas in Arctic show signs of dramatic decrease in sea ice.  Lowest ever?

https://forum.arctic-sea-ice.net/index.php/topic,2533.400.html?PHPS...

Comment by SongStar101 on January 31, 2019 at 11:21pm

Big Mid-West Arctic "Polar-Push" and "Bounce -Back" vortex this week,  wow! -60'sF (-50'sC)!! Lowest temps in US in recorded history for mid USA.

https://climatereanalyzer.org/wx/DailySummary/#t2min

-------------------

Weather History: The January 30-31, 2019 Arctic Outbreak

TOP 5 LOWEST WIND CHILLS RECORDED SINCE 1950:

1. -51 January 20, 1985

2. -45 December 24, 1983...January 23, 1963...January 24, 1963

3. -44 January 18, 1994

4. -41 January 15, 1977 (New #4 Now -42 January 30, 2019)

5. -40 January 15, 1972...January 15, 1994...December 22, 1989...January 6, 2014*

*Note - several hours of data were missing prior to -40 reading in 2014, so it may have gotten lower.

TOP 5 LONGEST DURATIONS WITH WIND CHILLS OF LESS THAN -40:

1. 16 Hours: January 20, 1985

2. 15 Hours: December 24, 1983

3. 7 Hours: January 18, 1994

4. 5 Hours: January 16, 1977

5. 3 Hours January 23, 1963...January 24, 1963

---------------===========-----------------

Bitter "Bounce-Back" cold in Russia!  -60's F (-50's C)

---------------===========-----------------

Ogimet - Cold Extremes!!

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