And regardless, it means absolutely nothing. The Earth's climate is 100 percent natural 100 percent of the time. Thanks NormsRevenge.
|
Posted on 06/14/2011 1:33:54 PM PDT by NormsRevenge
Explosive volcanic eruptions might be attention grabbing, but a new review of research finds that their environmental impact pales in comparison to human activities. According to the research, humans put out the same amount of carbon dioxide in three to five days that all of the volcanoes on Earth put out in one year.
"Anthropogenic carbon dioxide emissions dwarf global volcanic carbon dioxide emissions," study researcher Terrance Gerlach, of the U.S. Geological Survey, said in a statement. Carbon dioxide, or CO2, is the main greenhouse gas responsible for climate change.
Gerlach crunched the carbon dioxide numbers from earlier studies of volcanic output, finding a range of 0.13 to 0.44 billion metric tons, or gigatons, of CO2 per year. In comparison, the estimated rate of human carbon dioxide emissions for 2010 alone is 35 billion metric tons.
For instance, here are a few carbon-emitting human activities and their carbon-dioxide outputs:
Land-use changes: 3.4 gigatons per year
Light-duty vehicles (mainly cars and pickup trucks): 3.0 gigatons per year
Cement production: 1.4 gigatons per year
Present-day human carbon emissions could even exceed the CO2 output of several supervolcano eruptions, including the giant eruption that will eventually occur at Yellowstone National Park, Gerlach wrote in the American Geophysical Union's newsweekly Eos. These mega-eruptions are very rare, with the last one occurring 74,000 years ago in Indonesia.
(Excerpt) Read more at news.yahoo.com ...
These guys making such assertions never show their calculations.
From looking at the records, it seems that man’s contribution to the climate has prevented an ice age.
Naturally, some sort of limit will be impressed on our population eventually. I suspect that there is going to be a very bad world wide famine soon — it won’t be massively deadly in the developed world, but China, Africa, and India will be decimated. It may be enough here to wipe the Constitution away though.
"Stephanie Pappas, Senior Writer, LiveScience
Stephanie interned as a science writer at Stanford University Medical School, and also interned at ScienceNow magazine and The Santa Cruz Sentinel. She has a bachelor's degree in psychology from the University of South Carolina and a graduate certificate in science writing from the University of California, Santa Cruz"
Sheesh, bleeping Einstein here!
|
Makes sense, there are a lot more humans than there are volcanoes.
So they are ignoring 70% of Earth's surface?
And I read that the CO2 released by coal seam fires in China are greater than that.
I stopped reading here. The production of cement releases CO2 into the air, as limestone is calcined to produce calcium oxide. However, once the cement is made into concrete, it absorbs The same amount of CO2 as was release in its production. The net effect on the atmosphere is exactly zero. Granted, it may take months or even a few years for the absorption process to complete, but that doesn't alter the fact that the net CO2 addition to the atmosphere is zero.
You got that right, Civ.
And carbon dioxide it a trace gas these days and has been throughout the Holocene. All the sewers of all the cities on Earth, and all the hog farms in Iowa and North Carolina, put together can't compete with one volcano's blast of sulfur dioxide.
None of them can compare with the allegorical B.S. in this one ruinous article.
Which story will be parroted by your local newscast tonight. This one or the latest studies showing the solar cycles and the interplanetary magnetic field have apparently begun showing a weakening magnitude pattern, perhaps preceding a new Maunder Minimum and Little Ice Age?
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.
