Posted by Old Iron on December 22, 2013 at 10:04:57 from (70.195.2.132):
In Reply to: Global Warming posted by TimnVa on December 21, 2013 at 05:30:56:
Some scientists have pointed to solar activity as the predictor of where global temperatures are headed. Researchers have pointed to falling sunspot activity as evidence that the planet will cool off in the coming decades.
“By looking back at certain isotopes in ice cores, [Professor Mike Lockwood of Reading University] has been able to determine how active the sun has been over thousands of years,” the BBC reports. “Following analysis of the data, Professor Lockwood believes solar activity is now falling more rapidly than at any time in the last 10,000 years.”
Others have looked to natural climate systems for explanations for answers to the 15-year pause in global warming.
A study by Dr. Roy Spencer from the University of Alabama, Huntsville found that about half the warming that occurred since the 1970s can be attributed to El Niño weather events, which had a warming effect on the planet.
The Pacific Ocean’s natural warming and cooling cycles last about 30 years, with La Niña cooling being dominant from the 1950s to the 1970s and El Niño warming events dominating late 1970s to the late 1990s. Spencer suggests that the world may be in a La Niña cooling period.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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