As we all know, coldness is when there's no heat.
If the ashes of volcano covers the skies of Malaysia-Thailand-Indo, no sunlight can penetrate to our land. Is it possible for a subzero temperature?

hmmm with my culculation it can be..... but no reach 0^c but almost.....

Seeing the ridiculous heat in Malaysia nowadays, a slight freeze would be very very nice.

Your calculation?

What is your formula?

Malaysia does not have volcanoes. So not much chance of this happening. But when a big volcano (super volcano) erupts, it will cause a lot of ash to be deposited in the atmosphere. This ash can block the sunlight, and result in winter like conditions all over the world. Even though the volcano is far away (like thousands of miles away).

Normal volcanoes normally do not cause major disruptions. But super volcanoes, yes.

One example of super volcano is Lake Toba in Sumatra. This was a super volcano that caused mass extinctions in the past.

http://en.wikipedia.org/wiki/Lake_Toba

This post has been edited by Xepz: Apr 19 2010, 10:35 PM

+1

And, if let say a massive volcano eruption happens in Sumatera and smog covers the ASEAN airspace, I believe Singapore will suffer the most, as it has very little raw food and only one land exit to Johor.. If that happens and Malaysia decided to block the Tambak Johor, it will be chaos, at least until US sent their ships for aid..

Yeah, that's why I'm asking if the ashes covers only Malaysia-Thai-Indo..
I mean, a small coverage of ashes on just this area, not all of Asia..

With the heat still can come from east and west, is it possible to reach subzero?

but the sea will bring in warm water current from other place. like england are not as cool as it should be due to the warm current.

atmospheric winds will diffuse the ashes and cause global cooling instead of just local cooling.

For your reference we've had two major volcanic eruptions in our region in modern history, Krakatoa and Pinatubo, you can read up about them to learn what effect the ashes and gases had on the local and global climate.

That's the thermohaline circulation. Known to dissipate heat from equatorial to north / south.

According to friends in England right now the Volcanic ashes are not as what you think like in the movies. They are very small GLASS particles. Instead of BLURY it is now like HD. Due to the fine glass particle the SKY actually looks slightly brighter and SHARPER.

Hmm....it could even get hotter depending on the contents of the ash. Notice how it is usually warmer and stuffier here when there is haze blowing from indon?

do u remember Krakatua??? what happen when it explode.. & what is under the Krakatua ?

Probably a drop of a few degrees in temperature,as far as i know,as albedo increased.

Might cause agricultural problems.

Wont happen until become become subzero temperature.

But they will be a drop of temperature for sure.



Krakatoa Volcano eruption on 188x. considered a massive volcano,

cause world temperature drop for a few years.

It'll just drop a few degrees, because although visible radiation permeability of the atmosphere has reduced, infrared can usually still get through smog and particulates.

There's also atmospheric convection that'll try to balance out the temperature gradients, so if our regional atmosphere gets a bit colder, there will be an increase of circulation between our area and outlying warmer areas.

It probably cause tempreture to fall by 5 celcius. Take the example of caves in Malaysia. They dont get any sunlight at all for ages, but it is not freezing point in there.

Fine particles are very good insulation. For a volcano to spit out enough particles to cover our region, the amount of particle, collectively would probably come to about the size of an island, like Singapore. - and that was just fine particles that could float in the air.

During an eruption, it also split out larger earth particles, rocks, that would drop almost immediate to ground. Imagine that, it would take a volcano that probably half the size of peninsular malaysia to cause total blackout which could maintain for few years.

Which is unlikely to happen.

new solution for global warming = make more massive volcano erupt