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FF_Canuck





Joined: 02 Sep 2006
Posts: 3360
Reputation: 73.4
votes: 17
Location: Southern Alberta

PostPosted: Sat Jan 03, 2009 12:49 am    Post subject: Possible Link Between Solar Magnetics and Rainfall Reply with quote

Everyone's probably already seen it at SDA, but:

Phil Berardelli wrote:
Blame the Sun for a Cloudy Day?
...Now geographer Robert Baker of the University of New England, Armidale, in Australia, has linked solar magnetic activity to Earth's climate--at least regionally. Using sunspot counts and Australian meteorological data, as well as NASA satellite data for more recent years, he tracked sunspots and rainfall in Australia from 1876 to 2006. In this month's issue of Geographical Research, Baker reports that the amount of rainfall in most regions of the country tracked the 22-year magnetic cycle almost exactly. "It was unbelievable," Baker says. At the height of magnetic activity, rainfall across most of the country was plentiful. At the other end of the cycle, many of those same regions experienced severe droughts. The findings are particularly compelling, Baker says, because even though the lengths of the magnetic cycles are not precise and can vary by several years, the rainfall patterns followed them.

So what's behind the connection? Baker thinks it has to do with the amount of ultraviolet (UV) radiation hitting Earth. When the reversing of polarity approaches, he explains, the sun's magnetic field weakens, allowing more UV energy to reach our planet. More UV radiation kills off some of the oceans' plankton, which produce dimethyl sulfide, one of the primary atmospheric chemicals involved in cloud formation, and fewer clouds mean less rainfall...


This is connected with the cosmic ray theory of climate influence many of us are familiar with, but with a more focused application. If the correlation holds true, this could have important implications for meteorology and agriculture.
Mac





Joined: 02 Sep 2006
Posts: 5500
Reputation: 104
votes: 35
Location: John Baird's riding...

PostPosted: Sun Jan 04, 2009 4:51 pm    Post subject: Reply with quote

Very interesting. How long before Robert Baker is denounced for not being a meteorologist and/or linked to "Big Oil"?

-Mac
Rusty Bedsprings





Joined: 06 Dec 2008
Posts: 1629

votes: 5

PostPosted: Sun Jan 04, 2009 5:04 pm    Post subject: Reply with quote

Big oil... hu I forgot about them ruleing the world for a bit. Yu know Harpers controled by "Big Oil" :wink: .
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Possible Link Between Solar Magnetics and Rainfall

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