This is kind of silly because it is all known. Moreover, it ignores that high energy particles that can enter the Earth's atmosphere when sunspots are low and cause clouds to form that causes cooling. It ignores the fact that sunspots produce huge amounts of UV radiation and the UV is absorbed in the atmosphere also heating the Earth. When sunspot counts are down the UV is down. It ignores that hundreds of prior warmings occurred without benefit of CO2 emissions and probably were largely caused by increased sunspots.
Why is there any doubt that although CO2 is the cause of some recent warming it is not the dominating effect that IPCC claims. The AGW supporters have ignored sunspots but can longer duck the issue. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of VNBC INC Sent: Wednesday, October 07, 2009 4:08 PM To: geoengineering Subject: [geo] Re: More on current solar minimum .... Assuming that the lack of sunspots will cool the earth, it couldnt have come at a better time. AMEN On Oct 7, 3:31 pm, Dan Whaley <[email protected]> wrote: > Few weeks old... > > http://sj.farmonline.com.au/news/nationalrural/agribusiness-and-gener... > > Sunspot drought to test global warming theory > MATT CAWOOD > 17/09/2009 1:32:00 PM > > EARTH is experiencing a sunspot drought which, if it persists, may > deliver a make-or-break test of the theory of anthropogenic global > warming (AGW). > > Along with a dearth of sunspots, NASA reports other signs of a current > lull in the sun’s activity, including a 50-year low in solar wind > pressure and a 12 year low in the sun’s brightness. > > Some scientists believe that these signs point to more than just a low > point in the 11-year solar cycle. The sun may be entering a “deep > solar minimum”. > > Previous solar minimums—the Maunder Minimum of 1645-1715, the Sp orer > Minimum of 1460-1550 and the Dalton Minimum of 1790-1830—coincided > with periods when Earth’s climate was colder than average. > > While the link between solar minimums and a dip in global temperature > isn’t fully established, some believe that a solar minimum over the > next couple of decades may be an acid test of whether greenhouse gas > emissions are the primary cause of Earth’s sudden warming. > > Among them is University of New England researcher Dr Robert Baker, > who has for several years been working on a theory that the sun is a > key driver of Australian rainfall. > > The Dalton minimum occurred around the turn of the 18th century, and > another minimum was recorded around the turn of the 19th century. > > If this roughly 100-year pattern repeats, Dr Baker believes we may be > in for another multi-decade minimum with correspondingly lower global > temperatures. > > “If we have a solar minimum and global temperatures continue to climb > over the next decade, it will have established carbon dioxide as a > potent force on the Earth’s climate,” Dr Baker said. > > “It’s going to be a very good scientific test of carbon’s real > effect.” > > Dr Baker says the sun’s influence on global climate is underestimated. > > He has for several years been tracking 11-year solar cycles against > the Southern Oscillation Index, with remarkable accuracy—until this > year, when the relationship suddenly fell apart. > > Dr Baker believes this may be because the solar minimum has overridden > the smaller cycles he’s been tracking. > > He is now working on a paper outlining a theory that the sun’s cycles > influence rain-bearing cloud over the Pacific Ocean. > > How much cosmic radiation enters the Earth’s atmosphere, and how far > it penetrates, in Dr Baker’s view largely depends on the polarity of > the sun and Earth’s magnetic fields. > > His idea is that when the Earth’s magnetic field has been neutralised > by negatively-charged particles from the sun, certain forms of cosmic > radiation enter the atmosphere and encourage plankton development in > the oceans. > > Plankton give off dimethyl sulphide, which is regarded as a potent > agent of cloud nucleation—that is, water molecules cluster around the > compound to the point that rain droplets are formed. > > Other forms of radiation in other cycles kill off plankton, Dr Baker > believes, inhibiting cloud formation. > > Dr Baker says he has found a relationship between these processes and > the El Nino-La Nina cycles. > > In its review of Sun-Earth interactions, the Intergovernmental Panel > on Climate Change (IPCC) acknowledged that the sun influences Earth's > climate patterns, but determined that human influences are now > overriding those from the Sun. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
