Wednesday, June 11, 2008

Sunspots Vanished = A Cooling Earth?

They don't say it too openly here, but this low sunspot activity coincides with the present cooling trend over the last two years.  The one that "erased 100 years of global warming" by prior reports.  Do your own internet search on "Maunder Minimum" and "Little Ice Age" to gain an appreciation why solar activity is important to follow.

"In the past, they observed that the sun once went 50 years without producing sunspots. That period, from approximately 1650 to 1700, occurred during the middle of a little ice age on Earth that lasted from as early as the mid-15th century to as late as the mid-19th century."

Actually it was more like 150 years of low sunspots, but I won't quibble.   J.D.

+++++++

http://www.sciencedaily.com/releases/2008/06/080609124551.htm

Sun Goes Longer Than Normal Without Producing Sunspots
ScienceDaily (Jun. 9, 2008) - The sun has been lying low for the past couple of years, producing no sunspots and giving a break to satellites.

That's good news for people who scramble when space weather interferes with their technology, but it became a point of discussion for the scientists who attended an international solar conference at Montana State University. Approximately 100 scientists from Europe, Asia, Latin America, Africa and North America gathered June 1-6 to talk about "Solar Variability, Earth's Climate and the Space Environment."
The scientists said periods of inactivity are normal for the sun, but this period has gone on longer than usual.
"It continues to be dead," said Saku Tsuneta with the National Astronomical Observatory of Japan, program manager for the Hinode solar mission.
...
Dana Longcope, a solar physicist at MSU, said the sun usually operates on an 11-year cycle with maximum activity occurring in the middle of the cycle. Minimum activity generally occurs as the cycles change. Solar activity refers to phenomena like sunspots, solar flares and solar eruptions. Together, they create the weather than can disrupt satellites in space and technology on earth.
The last cycle reached its peak in 2001 and is believed to be just ending now, Longcope said. The next cycle is just beginning and is expected to reach its peak sometime around 2012. Today's sun, however, is as inactive as it was two years ago, and scientists aren't sure why.
"It's a dead face," Tsuneta said of the sun's appearance.
Tsuneta said solar physicists aren't like weather forecasters; They can't predict the future. They do have the ability to observe, however, and they have observed a longer-than-normal period of solar inactivity. In the past, they observed that the sun once went 50 years without producing sunspots. That period, from approximately 1650 to 1700, occurred during the middle of a little ice age on Earth that lasted from as early as the mid-15th century to as late as the mid-19th century.
...

Comments:
Another interesting observation is to read the May 15 USDA crop reports showing the crops are behind, due to cool weather. Yet, they predict record yields? I question the impact of this cooling on the food supply?
 
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