Redoubt Eruption

[alex4ever]

Its not something that can so easily be answered. It depends if the wind currents are strong enough to spread them around north pole and IF and where this smoke will go. You dont know how it will spread its not that simple. Things are surely not so simple as they seem. Such opinions need scientific proof.

[jimg]

I apologize Alex, my last post was not intended as serious.


On a serious note:
There are some amazing photos of Redoubt:

www2.avo.alaska.edu/volcanoes/volcimage.php?volcname=Redoubt&page=1

Eruption Cloud:


Lightening:

[Belushi TD]

So far the total ash fall in Anchorage is "trace" which means that I was able to sweep enough off the windsheild wipers of my wife's truck and my car to put about 3 ounces in a ziplock. (I'm a geologist, so this was REALLY COOL! My first volcanic eruption!)

Redoubt isn't going to affect the climate anywhere. Its too small and too localized. Yes, last itme it erupted, a KLM747 flew through the ash cloud and basicly wasted the plane. But, not a climate effecting eruption. Pinatubo made the sunsets pretty around the world for what, a year and a half? Redoubt isn't making the sunsets any prettier here, 100 miles away.

Belushi TD

[jimg]

I saw this image a few days ago:


I reckon a cloud of that would wreak some havoc!

[jimg]

They're expecting more explosive events at Mt Redoubt:

www.avo.alaska.edu/activity/Redoubt.php

Growth of the lava dome continued this past week and is now roughly equivalent in size to the largest dome that was emplaced during the 1989-90 eruption. As the dome grows larger it is increasingly unstable with a growing likelihood of a complete or partial dome failure. Currently AVO considers renewed explosive activity and dome destruction as the most likely outcome of the current episode of dome growth. The return to explosive behavior may occur with little or no advanced warning and would produce a significant ash cloud and lahars and/or flooding in the Drift River valley. There is also a possibility that the current episode of dome growth will slowly diminish and no further explosive activity will occur. Based on our knowledge of past eruptions at Redoubt AVO considers this outcome to be less likely.

[poitsplace]

Not too worried about Redoubt in a global temperature sense. It doesn't have a history of erupting with enough force to change temperatures globally...and ash has a lower albedo than the snow and ice so it may actually cause some arctic warming. I'm more concerned with very big, equatorial (or at least temperate zones) eruptions

[jimg]

But it could affect Northern Hemisphere temps if it has a big enough eruption.

Even Pinutobo's biggest eruption was not the first eruption, but one of many over weeks.

[jimg]

This can't be good for Arctic warming:

map
www2.avo.alaska.edu/hardcode/map.php
Orange is for current activity.


Current or recent (2009) eruptions in Aleutian/Kamchatka chain:

Redoubt
www2.avo.alaska.edu/activity/Redoubt.php


Cleveland
www2.avo.alaska.edu/activity/Cleveland.php


Shiveluch
geology.com/nasa/shiveluch-volcano-eruption/


Sarychev
www.volcano.si.edu/world/volcano.cfm?vnum=0900-24=&volpage=weekly

[poitsplace]

Actually...ash has a lower albedo than snow. The most powerful cooling comes from eruptions at latitudes without a lot of ice.

[jimg]

The ash isn't traveling very far, but the high altitude aerosols are.

From Nunavut Canada:
(link to spaceweather.com)
about 3 or 4,000 miles from Kamchatka

Photographed at 35,000 ft

www.spaceweather.com/swpod2009/25jun09/BrianWhittaker1_strip.jpg