Sunspot (Solfläckar)

Många följer noga utvecklingen av solfläckar och man bör göra det närmaste tiden.

1)

 Sunspot cycles may hold key to global warming, cooling

The 2008 winter was the coldest in 40 years for the upper Midwest, Plains states and most of Canada. Minnesota newspapers report that this year's opening of the locks to Mississippi barge traffic, delayed by three weeks, was the latest since the modern waterway opened in 1940.

Past cool periods, identified with the late stages of the "Little Ice Age" and with the Maunder and Dalton climate minima, closely correlate with low sunspot numbers (astronomers have kept close tabs on sunspots since Galileo's time). Some solar-physicists are now saying if the current cycle doesn't begin to produce spots soon, we can expect a cool-down like the 19th-Century Dalton minimum - or worse. Decades-long cooling in the past brought crop failures to Europe from repeated summer frosts and restricted growing seasons.

With grain shortages already staring us in the face, we'd be advised to begin thinking about a global cool-down instead of a warming that may or may not continue. We might consider ways to transform semi-desert into arable land and to develop seed with shorter maturing cycles suitable for a sub-boreal grain belt. If cooling should begin in earnest, we will quickly forget global warming as we face the new challenges ahead.

2)

A sunspot is a region on the Sun's surface (photosphere) that is marked by a lower temperature than its surroundings and has intense magnetic activity, which inhibits convection, forming areas of low surface temperature.

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" Investors should remember that excitement and expenses are their enemies. And if they insist on trying to time their participation in equities, they should try to be fearful when others are greedy and greedy when others are fearful." Warren Buffet

Inlägget är redigerat av författaren.

Inlägget är redigerat av författaren.