Earth’s Melting Poles: Trillion-Ton Larsen C Iceberg Calving To Be Accompanied By Calving Of Numerous Other Huge Icebergs / Jet Stream on Larsen C

The ARCTIC (above)

Trillion-Ton Larsen C Iceberg Calving To Be Accompanied By Calving Of Numerous Other Huge Icebergs
July 10th, 2017 by James Ayre

There are now only around 3 miles of of ice tethering an enormous trillion-ton piece of ice to the Larsen C ice shelf in Antarctica — with the rapidly approaching iceberg calving event slated to be one of the largest observed in modern times once it occurs.

The most recent observation images of the Larsen C ice shelf show that, as this event has been getting closer, numerous cracks have been radiating out from the tether in all directions.

In other words, it’s looking very likely that the iceberg calving will feature one of the largest icebergs seen in modern times accompanied by numerous other enormous (but still much smaller) icebergs.

Climate Central provides more: “New satellite imagery shows a host of new cracks branching off the end of the main rift. According to scientists working on Project MIDAS, an effort that’s closely monitoring the ice shelf, that means there will likely be a swarm of smaller icebergs that break off with or shortly after the main iceberg does.

“Those icebergs will likely be formidable in their own right, but they’ll look lilliputian next to the iceberg that’s been in the process of breaking off since 2010. That iceberg represents 10% of the area of the Larsen C ice shelf and will stretch across an area the size of Delaware. If you squeezed all the ice into a column the area of a football field, it would reach two-thirds of the way to the moon.”

… the iceberg calving event will likely see the whole Larsen C ice shelf destabilized, eventually leading to its total collapse — as this is exactly what happened with the Larsen A and Larsen B ice shelfs following enormous iceberg calving events.

It should be noted here that Antarctica’s ice shelfs — which keep the continent’s icebergs from flowing into the sea at a much faster rate — are currently being weakened from underneath by warming waters, and also to some degree from above by warming air.

Trillion-Ton Larsen C Iceberg Calving To Be Accompanied By Calving Of Numerous Other Huge Icebergs


Published on Jul 10, 2017
Following up on my previous jet stream video, I now discuss how a slight southward shift of the Southern Hemisphere jet stream can nudge the 10% section of the Larsen C ice shelf that is poised to break off, seaward, and essentially rip it off the main ice shelf.



Seemorerocks / Tuesday, 11 July 2017
Increasingly-dire headlines on abrupt climate change

Five years or so ago when I started this blog there was very little in the mainstream about climate change. Now the media is often dominated by increasingly dire headlines

We have passed a grim new milestone for atmospheric carbon dioxide levels, probably for good. Earlier this week Mauna Loa Observatory, a key site for keeping tabs on carbon dioxide measured 400 parts per million — a figure that some researchers have claimed would be the critical tipping point for the Earth.

Numbers higher than 400 ppm have been observed a few times in the last decade, what makes this significant is that September is usually the month when global C02 levels are at the lowest.

Ralph Keeling, a scientist at the Scripps Institute for Oceanography and lead on their CO2 monitoring program wrote that it was “almost impossible” that we will drop below 400 ppm in the coming months. “Brief excursions toward lower values are still possible, but it already seems safe to conclude that we won’t be seeing a monthly value below 400 ppm this year – or ever again for the indefinite future.”






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