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Volcanoes and global cooling

Found this amazing essay published on National geographic

Colossal volcano behind ‘mystery’ global cooling finally found

The eruption devastated local Maya settlements and caused crop failures around the world

https://www.nationalgeographic.com/science/2019/08/colossal-volcano-behind-mystery-global-cooling-found/?cmpid=org=ngp::mc=social::src=twitter::cmp=editorial::add=tw20190823science-colossalvolcanomystery::rid=&sf218005129=1


Some extracts

The ices of Greenland and Antarctica bear the fingerprints of a monster: a gigantic volcanic eruption in 539 or 540 A.D. that killed tens of thousands and helped trigger one of the worst periods of global cooling in the last 2,000 years. Now, after years of searching, a team of scientists has finally tracked down the source of the eruption.

The team’s work, published in Quaternary Science Reviews, lays out new evidence that ties the natural disaster to Ilopango, a now-dormant volcano in El Salvador. Researchers estimate that in its sixth-century eruption, Ilopango expelled the equivalent of 10.5 cubic miles of dense rock, making it one of the biggest volcanic events on Earth in the last 7,000 years. The blast was more than a hundred times bigger than the 1980 Mount St. Helens eruption and several times larger than the 1991 eruption of Mount Pinatubo. It dealt the local Maya settlements a blow that forever altered their trajector……

el salvador

 

Ice cores from Greenland and Antarctica show spikes of sulfate, a byproduct of large volcanic eruptions, at 536 and either 539 or 540. The two volcanoes were so large and so violent, they launched sulfur gases and particles miles into the sky. Since this material reflected sunlight away from Earth’s surface, it triggered severe global cooling: One 2016 study found that the volcanoes decreased average global temperatures by as much as 3.6 degrees Fahrenheit……

……

geologists published new evidence that the historical “dust veil” of 536 was caused by a volcano. In the other, researchers announced that the Tierra Blanca Joven extended into marine sediments off the coast of El Salvador. The Tierra Blanca Joven eruption was even bigger than Dull and others thought.…….

………..

Dull’s team also revised their estimate of Ilopango’s size, taking into account the thickness and spread of Tierra Blanca Joven deposits. They say that Ilopango may have even dwarfed the 1815 Tambora eruption, a huge volcanic event that ushered in “a year without a summer” because of the global cooling it caused. Ilopango likely launched up to a million tons of sulfur miles into the sky, high enough for stratospheric winds to spread the aerosols worldwide and trigger global cooling.…..


The actual Research paper

https://www.sciencedirect.com/science/article/abs/pii/S0277379119301465

Radiocarbon and geologic evidence reveal Ilopango volcano as source of the colossal ‘mystery’ eruption of 539/40 CE

https://doi.org/10.1016/j.quascirev.2019.07.037

 

 

 

 

 

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Are the Mount Sinabung eruptions ..effecting our weather?

LINKS

https://climatecrocks.com/2019/06/09/cheering-the-volcanhttps://twitter.com/AndrewDessler/status/1137813438514835458o/

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The suns acceleration linked to the earths ice age cycles by TOM MANGO

 

minimum1843

minimum1986

https://goo.gl/photos/U2vt37BGBdMtknRg6

Hi Sue,
These two graphs indicate that there are times when solar
minimum occurs at or near the same location on the ecliptic.

When the Sun’s acceleration decreases during an Ice-age cycle
it’s orbit becomes more circular and average solar cycle length
becomes longer (approaching 11.86 years).

During the 12,000 year inter-glacial periods there is evidence
that this is happening to a lesser degree. Notice the 143 year
separation (Bretagnon wave?) between 1843 and 1986.

Tom

CRIKEY said”feel freee to ask TOM questions in the comments section below.
This post is an ongoing study of Toms’
Use the search facility to find his previous posts

l store all of Toms graphs in my solar system and the earths climate folder found here

https://photos.google.com/album/AF1QipPZNZR5fK3hL3r49fNZMvS_rEPP_5IyP3lQmlwR

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Maunder, Dalton , Gliessburg, Oort, MWP wolf , sporer

CLICK ON TITLE TO LOAD DISCUSSION IN THE COMMENTS BELOW

NEW RESEARCH . DECEMBER 2015..

TOM MANGO FINDS THE  MAUNDER MINIMUM IS PART OF A REPEATING CYCLE

His research and current forum discussion is found

https://weathercycles.wordpress.com/2016/01/08/earths-climate-linked-to-jupiter-saturn-and-the-solar-system-barycentre-discussion-open/comment-page-1/#comment-4198

https://weathercycles.wordpress.com/2015/01/08/following-tom-mango/

 

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EARTHS CLIMATE LINKED TO JUPITER / SATURN and the SOLAR SYSTEM BARYCENTRE.. Discussion open

TOM MANGO has undergoing research on this topic. Here are a few of his latest graphs showing some key cycles that are open to link to earths climate
His email is
tlmango10@gmail.com




TOMS EXPLANATION..
The first graph is the sixtyoneyear graph which contains equ(3) in orchid.
If we perform peak-to-peak analysis on equ(3) using every fifth peak we will extract a 2208 year (Hallstatt) cycle.
Notice that the Hallstatt has a 144 year wave oscillating on it (second and fourth graphs).
I discovered this wave but I named it after Pierre Bretagnon.
This peak-to-peak analysis simply measures the change expressed in terms of mass.

Now… If we analyze every fifth peak we find there is actually five combinations (not demonstrated in the graphs).
So… There is actually five overlapping Hallstatt cycles produced, each separated by a phase of ~441.6 years (2208 / 5).
One of the five Hallstatt cycles was in agreement with the Damon and Sonnet 14C data.
I chose the one that was in agreement and that is the fourth graph.

The third graph is a climate projection based on the work of others.
Here I’ve made a huge discovery involving the ~1000 year millennial cycle.
In my model minimums advance along a 914 year wave and these minimums re-occur at ~1000 year intervals.
So…. the next minimum scheduled to repeat itself is the Oort minimum, which should happen in 2070.
It was later that I discovered the Bretagnon wave and that the millennial cycle was really 1008 years (144 x 7).

KEEP TUNED for discussion and please feel free to ask tom questions here
His email is
tlmango10@gmail.com

——————–

If you want more detail on the development of these findings. I have a post dedicated to TOM MANGO’s work

here

https://weathercycles.wordpress.com/2015/01/08/following-tom-mango/comment-page-1/#comment-4077

You might have to scroll through the pages

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Little Ice Age

CLICK ON TITLE TO LOAD ALL FURTHER ENTRIES ON THE BASE OF THIS PAGE

Little ice age
. NASA defines the term as a cold period between AD 1550 and 1850
http://en.wikipedia.org/wiki/Little_Ice_Age

“The period between 1400 and 1850 was marked by an average temperature drop of just less than 1 degree C (1.8 degrees F), but not just in the Northern Hemisphere. Scripps graduate student Anais Orsi and colleagues found evidence of the same cooling trend in samples of ice from the West Antarctic Ice Sheet. That contradicts prevailing theories that the Little Ice Age was not globally synchronized, but a regional cooling possibly triggered by changes in ocean circulation that created a temperature see-saw effect between the hemispheres.”

[http://explorations.ucsd.edu/research-highlights/2012/research-highlight-the-little-ice-age-was-global-scripps-researchers-say/]
QUOTE from
http://climatecontrarian.blogspot.com.au/2013/10/evidence-that-little-ice-age-in-europe.html

Thanks to
JAMIE JESSOP and his google blog for linking this interesting info’
https://plus.google.com/105568608569826422424/posts