Climate change is real...I see some posters think the cause could be volcanic eruptions.

Maybe it has nothing to do with the coal and oil we burn.

Maybe it's those damn volcanoes.

Every few years, Mount Etna, in Sicily, blows its stack.
Each big eruption sends millions of tons of CO2 into the atmosphere.
Now, combine that with the output of all the other volcanic activity on the planet.

Let's take the largest scientific estimate-- about 500 million tons of volcanic CO2 entering the atmosphere ever year.
Sounds like a lot, right? But that's not even TWO PERCENT of the 30 billion tons of CO2 that our civilization is cranking out every year.
And, funny thing, the measured increase in CO2 in the atmosphere tallies with the known amount we're dumping there by burning coal, oil and gas.

Volcanic CO2 has a distinct signature-- it's slightly heavier than the kind produced by burning fossil fuels.
We can tell the difference between the two when we examine them at the atomic level.

It's clear that the increased CO2 in the air is not from volcanoes.
What's more, the observed warming is as much as predicted from the measured increase in carbon dioxide.
It's a pretty tight case.

Our fingerprints are all over this one.

Volcanic eruptions lower the temperature not increase it.

So, this entire post has zero relevance to the topic and does nothing to dispel the relationship between volcanic eruptions and the major changes in climate that follow.



The Year Without a Summer, a peculiar 19th century disaster, played out during 1816 when weather in Europe and North America took a bizarre turn that resulted in widespread crop failures and even famine.

The weather in 1816 was unprecedented. Spring arrived but then everything seemed to turn backward, as cold temperatures returned. The sky seemed permanently overcast. The lack of sunlight became so severe that farmers lost their crops and food shortages were reported in Ireland, France, England, and the United States.

It would be more than a century before anyone understood the reason for the peculiar weather disaster: the eruption of an enormous volcano on a remote island in the Indian Ocean a year earlier had thrown enormous amounts of volcanic ash into the upper atmosphere.

The dust from Mount Tambora, which had erupted in early April 1815, had shrouded the globe. And with sunlight blocked, 1816 did not have a normal summer.

http://history1800s.about.com/od/crimesanddisasters/a/The-Year-Without-A-Summer.htm

They are expected to make it back to spawn on their own. Some are caught and used to create fingerlings to rebuild stocks. They generally spawn during snowmelt so the streams have more water.

I am still waiting for global-warming alarmists to explain the cause of the Medieval Warm Period, a global phenomenon that lasted 300 years, ending circa 1250 C.E.

My best guess is it was caused by ox farts...probably. Hope this helps you out.

Evidently, you didn't understand my post. It was in response to a previous post that was speculating CO2 emissions from volcanic activity was a major contributor to climate change and the greenhouse effect.

Sulfur dioxide released in volcanic eruptions has occasionally caused detectable global cooling, the carbon dioxide released in contemporary volcanic eruptions has never caused detectable global warming of the atmosphere. This is probably because the amounts of carbon dioxide released in volcanism have not been of sufficient magnitude to produce detectable global warming. Studies to date of global volcanic carbon dioxide emissions indicate that present-day volcanoes release less than a percent of the carbon dioxide released currently by human activities.

The major cause of climate change is the greenhouse effect. Human activities with the burning of fossil fuels are a major contributor, not volcanic activity.

That was my point and it does have relevance.

Ox-made global warming ... Very interesting.

Maybe you can quote those posts because after a quick perusal I found none mentioning volcanoes raising the temperature.

I did see the one that included Mt St Helens and CO2, but he made no mention of that raising temperatures.

Where did you get the idea that my post said anything about volcanic activity raising temperature? Quite the opposite....my post was about volcanic activity NOT CONTRIBUTING to global warming.

Please go back and read it again.

Climate change is real...I see some posters think the cause could be volcanic eruptions.

Maybe it has nothing to do with the coal and oil we burn.

Maybe it's those damn volcanoes.

Every few years, Mount Etna, in Sicily, blows its stack.
Each big eruption sends millions of tons of CO2 into the atmosphere.
Now, combine that with the output of all the other volcanic activity on the planet.

Let's take the largest scientific estimate-- about 500 million tons of volcanic CO2 entering the atmosphere ever year.
Sounds like a lot, right? But that's not even TWO PERCENT of the 30 billion tons of CO2 that our civilization is cranking out every year.
And, funny thing, the measured increase in CO2 in the atmosphere tallies with the known amount we're dumping there by burning coal, oil and gas.

Volcanic CO2 has a distinct signature-- it's slightly heavier than the kind produced by burning fossil fuels.
We can tell the difference between the two when we examine them at the atomic level.

It's clear that the increased CO2 in the air is not from volcanoes.
What's more, the observed warming is as much as predicted from the measured increase in carbon dioxide.
It's a pretty tight case.

Our fingerprints are all over this one.

The Medieval Warm Period - a period of global warming that lasted 300 years - took place between 950 C.E. and 1250 C.E.

If the Medieval Warm Period took place without being man-made, then how can anyone be certain that any modern-day global warming is man-made?

Bovine community outraged by flatulence coming from Washington DC.


The United States is spewing 50 percent more methane a potent heat-trapping gas than previously thought, a new study says. Most of it is coming from the federal government in Washington, D.C.

Much of that extra methane, also called natural gas, seems to be coming from the EPA offices, including manure, belches, and flatulence, caused by abundant taxpayer-funded lunches, dinners, and breakfasts compliant with Michelle Obama's recommended arugula diet.(People's Cube)

And that's why they put a dome on the Capital building.