1600 active volcanoes - today it's one in Costa Rica - global warming update.

Rather lacking any facts to reach any conclusions from your post Zorro.

So how much CO2 , methane do these volcanos do they "spew out " every year. How does that compare to human emissions of CO2 ?


Cold you compare these figures and post.

Do volcanos produce 10 times as much CO2 as humans? 100 times more? Maybe the same? Is it 10 times less? 100 times less?


Some sort of comparison would be useful Zorro.

Well in actual fact its carbon neutral, since carbon is also subducted at the edge of the tectonic plates.

Likewise, human activity is also carbon neutral (esp. in the long term) as vegetation will become more lush due to more rain and warmer temps - and thats if indeed theres enough increase of co2 to have a significant effect on the climate.

increased volcanic activity will cause global cooling due to ash filtering the suns rays, somewhat mitigating the increase of co2 in the atmosphere.

I think Volcanic Activity would be included in the natural warming or cooling of the Earth, which has happened throughout its history.

Plus I don't think Volcanoes are going to pay Carbon tax.

What is Global Warming?

Global warming is the unusually rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. The global average surface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6° F) between 1906 and 2005, and the rate of temperature increase has nearly doubled in the last 50 years. Temperatures are certain to go up further.

Is this part of the normal warming or cooling, or is this something we have to worry about. Nobody knows for certain.

Fossil fuels will run out at some time anyway, so we should be looking at more renewable energy sources for our long term need.

The Day After Tomorrow is not imminent. So there was a bit of a false panic. But never the less I don't think we can quite ignore it yet.

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gee mr mexico - they are waiting for the super volcano in the USA(yellowstone) to light up - If that one spews out - we are done. no more people. It's very overdue.

In that scenario the number is 100 percent.

Its erupted before...we still have people?

It would cause massive damage...there are signs it may be waiting to blow....no certainty at moment

Zorro, not quite sure how you can say Yellowstone is "overdue".

Every chance it won't erupt in next 1000 years.
In the very unlikely event that it does erupt ...
Why will it kill every human on Earth. Southern Hemisphere should be OK  & we can grow plants using artificial light.

So Zorro, last year (2015) what % of CO2 emissions were caused by Volcanos compared to humans? Are you claiming it was 100%? 90% ? 50% 10%? Less ?
There need to be a few more facts in your post before anybody can reach a conclusion.

you guys seem to know just a little of whats going on/just a little of  the facts:

i'll put you straight:

human atmospheric co2 emissions are huge - only 2% of this amount comes  from volcanoes in an average year; but much more comes from cattle world wide. (see below - its old research stating 1% which has been revised upwards)

we should be going into an ice age - far worse than the big problems of warming - but the cumulative effect of 7000* years of mans farming/forest cutting and industrialisation may well have prevented this

global warming/ ice ages are driven by the sun activity which waxes and wanes over millenium

the sun will very gradually get hotter as it burns off more hydrogen and creates more helium- over time warming is inevitable


when yellowstone blows the effect will be world wide - but mostly the northern hemishere will be affected

yellowstone is indeed 'overdue' in that the hotspot has blown 3 times - 600,000 years apart - 640,000 years since last one


there are 7 recognized supervolcanoes - that in Indonisia -Toba- last blew 70000 years ago

sometime in our past humans were nearly wiped out - our dna is so very similar to each other that it indicates a bottleneck of a very few people , our forebears

re carbon tax:no one has ever truly paid the price for burning fossil fuels- say 30,000 years of carbon store being burnt off in an instant

the big problem may well be that human driven emissions will increase the rate at which carbon is absorbed into the oceans - changing the ph levels and leading to a mass extinction event - worldwide most human food  is insect and sea based


short term subduction is nothing like carbon neutral -there is a very significant time lag


as for egulberry:

What is Global Warming?

Global warming is the unusually rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. The global average surface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6° F) between 1906 and 2005, and the rate of temperature increase has nearly doubled in the last 50 years. Temperatures are certain to go up further.

No it is not: Global warming is the increase in the surface , oceans and atmospheric  temperature - which SOME CLAIM- is due to mans produced greenhouse gases and there is a potential- perhaps probable- likelihood of further increases in average temperature rises - no certainty tho.

So lets be practicable: short term - get fracking in uk asap and reduce our carbon footprint by doing so- the alternative is to continue importing fracked gas from USA into Milford Haven in ever greater quantities - yes- its started. longer term- nuclear power please- the most natural power source in the universe;

in time we should be able to tap into the earths natural energy - the trapped heat beneath our feet- every kilometer you drill down the temperature rises 50 C - heat produced by radioactivity / pressure and limitless for our purposes

oh- the reference: it is a  little dated  - as am I - - but the general thrust of it remains mainstream and valid

globally, volcanoes on land and under the sea release a total of about 200 million tonnes of CO2 annually.
This seems like a huge amount of CO2, but a visit to the U.S. Department of Energy's Carbon Dioxide Information Analysis Center (CDIAC) website (http://cdiac.ornl.gov/) helps anyone armed with a handheld calculator and a high school chemistry text put the volcanic CO2 tally into perspective. Because while 200 million tonnes of CO2 is large, the global fossil fuel CO2 emissions for 2003 tipped the scales at 26.8 billion tonnes. Thus, not only does volcanic CO2 not dwarf that of human activity, it actually comprises less than 1 percent of that value.

A short time ago (geologically speaking) the question "Which produces more CO2, volcanic or human activity?" would have been answered differently. Volcanoes would have tipped the scale. Now, human presence, activity, and the resultant production of CO2, through the burning of fossil fuels, have all climbed at an ever-increasing rate. On the other hand, looking back through the comparatively short duration of human history, volcanic activity has, with a few notable disturbances, remained relatively steady.

Volcanoes are still awesome, even though they don't produce CO2 at a rate that swamps the human signature, contributing to global warming. In fact, spectacular eruptions like that of Mount Pinatubo are demonstrated to contribute to global cooling through the injection of solar energy reflecting ash and other small particles.

forty volcanoes right now spewing out their guts.

Don't work yourself into a lava over it

There's fire... there's smoke... can't you take all this seriously... and build the best F@@kin barbecue grills that are possible.