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Old March 26th 10, 01:06 AM posted to uk.sci.weather
Alastair Alastair is offline
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First recorded activity by Weather-Banter: Mar 2006
Posts: 1,594
Default That lazy old Sun

On Mar 26, 12:02*am, "Lawrence Jenkins" wrote:
Has nuthin' to do : is this true , is the sun benign? How importatnt is it
in respect of how warm it keeps us and what grows?


The Sun is the source of 99.9% of the heat on the surface of the
Earth. But its strength varies over the sun-spot cycle. Moreover the
solar constant is not constant and has increased by 30% since the
Earth was formed, and is now refusing to recover from its last solar
minimum.

Cheers, Alastair.