Laura said:
angelburst29 said:
Heat From Deep Ocean Fault Punches Hole in Arctic Ice Sheet
http://www.climatechangedispatch.com/heat-from-deep-ocean-fault-punches-hole-in-arctic-ice-sheet.html
Back dated November 6, 2015 - As winter begins to settle in across the Arctic Ocean and sea ice extent rapidly expands a very interesting high temperature and low salinity hole has just been punched in the sea ice at a very telling location: directly above the deep ocean Gakkel Ridge Rift / Fault System (Figures 1, 2, and 3).
Interestingly, the Cs mentioned a volcanic eruption under arctic ice back in 1995. They said it would occur in 1996 and, I believe, a small eruption was reported then. After that, the topic got rather quiet though there have been others reported almost in passing, but no one every gave it much attention. What this remark suggested to me was that there was a lot more to so-called human caused global warming than met the eye and that may certainly be why it is somewhat suppressed. Can't have people knowing that ice melt is NOT due to human causes because there's no political capital in that.
Much later, I read the sci-fi novel, "Mother of Storms" which starts off with an atomic explosion in the arctic that melts the ice and releases a massive amount of methane which causes a sudden global warming which then leads to a sudden need for "heat exchange" in the global weather system, which leads to the superstorms that nearly destroy the earth. Very sci-fi, but it made me think.
But, the above article brings a bit of perspective to this matter. Since so many other undersea events have been reported over the past ten to fifteen years - bubbling up of gasses, swelling of domes, discovery of whole chains of undersea volcanoes going active, it is really surprising that more attention hasn't been given to this and, concomitantly, that a lot more people aren't getting worried by it! I've been saying for years that I think the heat of "global warming" is coming from INSIDE OUR PLANET mainly, and in some kind of dynamic interaction with the cosmic environment, and certainly not from human causes.
October 1996
Ice–volcano interaction of the 1996 Gjálp subglacial eruption, Vatnajökull, Iceland
http://www.nature.com/nature/journal/v389/n6654/full/389954a0.html
[...] observations from the fissure eruption at Vatnajökull ice cap, Iceland, in October 1996. In the 13 days of the eruption 3 km3 of ice were melted and the erupted magma fragmented into glass forming a hyaloclastite ridge 6–7 km long and 200–300 m high under 500–750 m of ice. Meltwater of temperatures of 15–20 °C flowed along a narrow channel at the glacier bed into the Grímsvötn subglacial lake for five weeks, before draining in a sudden flood, or jökulhlaup. Subsidence and crevassing of the ice cap occurred over the eruptive fissure and the meltwater path, whereas elsewhere the glacier surface remained intact, suggesting that subglacial eruptions do not trigger widespread basal sliding in warm-based glaciers.
June 26, 2008
Fire under the ice: volcanic eruption under the Arctic
http://cassiopaea.org/forum/index.php?topic=9103.0
http://www.sott.net/article/160630-Fire-under-the-ice-Gigantic-
Feb. 18, 2016
Scientists are floored by what’s happening in the Arctic right now
https://www.washingtonpost.com/news/energy-environment/wp/2016/02/18/scientists-are-floored-by-whats-happening-in-the-arctic-right-now/
New data from NASA and the National Oceanic and Atmospheric Administration suggest that January of 2016 was, for the globe, a truly extraordinary month. Coming off the hottest year ever recorded (2015), January saw the greatest departure from average of any month on record, according to data provided by NASA.
But as you can see in the NASA figure above, the record breaking heat wasn’t uniformly distributed — it was particularly pronounced at the top of the world, showing temperature anomalies above 4 degrees Celsius (7.2 degrees Fahrenheit) higher than the 1951 to 1980 average in this region.
“We’ve got this huge El Niño out there, we have the warm blob in the northeast Pacific, the cool blob in the Atlantic, and this ridiculously warm Arctic,” says Jennifer Francis, a climate researcher at Rutgers University who focuses on the Arctic and has argued that
Arctic changes are changing mid-latitude weather by causing wobbles in the jet stream. “All these things happening at the same time that have never happened before.”
Feb. 19, 2015 -
Arctic Heat & Sea Ice Collapse Has Split the Polar Vortex in Two Sending El Niño Rains to Alaska
http://www.dailykos.com/stories/2016/2/19/1487234/-Arctic-Heat-Sea-Ice-Collapse-Has-Split-the-Polar-Vortex-in-Two-Sending-El-Ni-o-Rains-to-Alaska
Intense storm after intense storm is spinning way, way above normal sea surface temperatures from the Gulf Stream around the deep cold subpolar gyre into the Arctic. Sea ice on the Atlantic side has retreated towards the pole to record low area and extent for January through mid-February. Arctic temperatures have extraordinarily warm for six weeks.
[...] Profound changes have taken place in the north Atlantic since 1997. Recent research by Dr. Stephan Rahmsdorf has found evidence of a long-term slow down in deep water formation in the Labrador and Greenland seas. This is commonly referred to as a “Gulf Stream slowdown”. However, from the late 1980’s through 1995, very stormy, cold winters brought renewed intensity to deep water formation. The resurgence of the “global conveyor belt” intensified the flow of warm water up the coast of Norway into the Arctic seas. By the year 2000 sea ice in the Barents sea began to retreat as warm north Atlantic water, which partially originated in the Gulf Stream, pushed into the Arctic. Since 1995, Atlantic deep water formation has slowed, in part, because the melting of glaciers in Greenland and throughout the Arctic, has freshened the waters. Freshened water is lighter than salty water so it slows deep convection.
In 2010 the Gulf Stream, itself, slowed down. Although the Gulf Stream recovered quickly, deep water formation did not. Transport of warm water across 50ºN dropped, and by 2013 the rapid loss if sea ice stopped. September Arctic sea ice extent, area and volume ice all made a large recovery in September 2014. The slowdown led Dr. Stephen Yeager, in 2015, to predict a slowdown in sea ice loss on the Atlantic side of the Arctic in the journal Geophysical Research Letters.
Something happened that Dr. Yeager didn’t expect .
The Gulf Stream expanded northwards. The southwards flow of Labrador Current water slowed. The wall of the Gulf Stream moved to the north and warm Gulf Stream eddies replaced the missing cool water. Water off the east cost got much warmer and saltier. Coastal storms intensified (e.g. Sandy).
In winter 2015 the warm water fueled record snow storms in Boston. The storms off the east coast that moved northeastwards built an atmospheric vortex around Greenland. By late February extraordinarily deep lows off the tip of Greenland caused sea surface heights to plummet indicating that deep water formation had strengthened there. Record cold sea surface temperatures in the gyre in the seas off of Labrador and Greenland began to mix through the warm salty layer of Mediterranean water at a depth of 3000 feet (1000 meters). Then the flow of warm water up the coast of Norway into the Arctic sea strengthened.
Apparently, the increasing salinity of the subtropical water resulting from the warming and drying of the subtropical and tropical Atlantic has partially canceled out the decreasing salinity of the subpolar waters resulting from glacial melting.
But we have a problem. Either the “Gulf Stream” is strong and warm waters melt away the sea ice of the “Gulf Stream” slows down and the heat builds up in the tropical and subtropical Atlantic. Greenhouse gases have created a large imbalance between the radiation coming in and going out and the excess heat is going into the oceans. The north Atlantic has taken up an extraordinary amount of heat that is intensifying storms and changing atmospheric circulation patterns.
Feb. 2016
Arctic Sea Ice Blog - An exceptional exception
http://neven1.typepad.com/blog/2016/02/an-exceptional-exception.html
I want to highlight a couple of things to give you an idea of what's going on in the Arctic right now. As some of you may already know, this year's trend line is the lowest on record in practically every graph (see here). So far, it has played a major role in the breaking of Global sea ice area and extent minimum records, and it looks highly possible that last year's Arctic sea ice maximum record gets broken too. Mind you, that record was already spectacularly early and low, which is why I referred to it as Mad Max at the time.
Here's the current situation on the Cryosphere Today sea ice area and JAXA sea ice extent graph (as provided by ADS-NIPR):
2015 peaked on this date in the CT SIA data set, but this year is currently 700K lower (last week's preliminary peak was almost 600K lower). The 2015 maximum occurred on February 15th in the JAXA SIE data set, but this year's preliminary peak is almost 274K lower. That's no small change, if things stay this way.
When area/extent is exceptionally low, it's usually a sign of something going on one side of the Arctic, while things are relatively quiet on the other side. This year, however, there's stuff going on on both sides of the Arctic. I'll start with the Pacific side of the Arctic, where regional extent is again very low in the Bering Sea, though high in the Sea of Okhotsk (these graphs are produced by Wipneus and can be found on the Regional Graphs page):
It has been very cold in the Sea of Okhotsk in the past week or two, but the Bering simply doesn't budge, despite strong northerlies, just like last year.
The spectacle is taking place in the Beaufort Sea, however, where yet another cracking event is causing the ice pack to look like a broken mirror. The cause of the cracking is a very strong Beaufort Gyre that started spinning when the Arctic Oscillation switched to its negative phase. In other words, a high-pressure system settled over the central Arctic and the ice pack followed the clockwise motion of the winds. But a side-effect of all this, as can be seen on the AVHRR image is that ice is being pulled away from the Canadian and Alaskan coasts, leaving huge polynyas behind.
Just how big the difference is compared to 2015 can also be seen on LANCE-MODIS true color satellite images, as the darkness retreats northwards and more and more of the Arctic becomes visible again. Here's an animation showing February 13th 2015 vs 2016:
Freezing or not, these temperature anomalies are astounding, and it remains to be seen how much thicker that new ice can get before the Sun starts beating down it, longer and longer every day.
In the meantime, on the Atlantic side of the Arctic, it seems that the incessant series of Atlantic storms have been preventing ice expansion with their moist, warm air (also visible on the temp map above), as regional extent is extremely low in the Barentsz and Greenland Seas, despite plenty of transport through Fram Strait (see this animation posted by Wipneus on the ASIF):
I've added the Kara Sea because it has been dropping too since last week. The reason for that became clear to me when I made this animation of Uni Bremen sea ice concentration maps:
Due to persistent westerly winds the sea ice south of Novaya Zemlya is retreating, reminiscent of 2011 and 2012, although things were a lot more spectacular in February 2012. But it could retreat some more, given the current forecasts of more westerly winds and extreme temperature anomalies: