This is predicted due to important modulating cloud-forming influences of cosmic rays throughout periods of reduced sunspot activity.

FORBES: Climate Obstinately Refuses to Cooperate with Global Warming Alarmists

That was followed by the Dalton Minimum from 1790 to 1830, another period of well below normal sunspot activity.

FORBES: To The Horror Of Global Warming Alarmists, Global Cooling Is Here

Solar scientists have been waiting since December 2008 for signs that sunspot activity is picking up but so far without success.

ECONOMIST: Green.view: A spotless record | The

Decadal and longer changes in sunspot activity impacting warming and cooling cloud cover patterns are now being recognized as an important factor.

FORBES: Would a global warming really be that bad?

Many prominent scientists predict that this is likely due to important modulating cloud-forming influences of cosmic rays throughout periods of reduced sunspot activity.

FORBES: Gullible Warming: A Contrived Crisis That Is Too Good To Waste

That was followed by a period of even lower sunspot activity that lasted 90 years from 1460 to 1550 known as the Sporer Minimum.

FORBES: To The Horror Of Global Warming Alarmists, Global Cooling Is Here

Sunspot activity waxes and wanes on the sun in a 11-year cycle, and we are approaching the peak of sunspot activity, probably reaching it in 2013, according to Hesse.

FORBES: Huge Solar Flares Could Spell Catastrophe for Earth

As noted in the paper, the IPCC models also fail to incorporate climate modulating effects of solar changes such as cloud-forming influences of cosmic rays throughout periods of reduced sunspot activity.

FORBES: Global Warming? No, Natural, Predictable Climate Change

But in the current cycle, sunspot activity has collapsed.

FORBES: To The Horror Of Global Warming Alarmists, Global Cooling Is Here