[Coral-List] Climate and the Sun?

David M. Lawrence dave at fuzzo.com
Wed Dec 15 10:07:45 EST 2010


No competent scientists denies the link between solar output and 
climate.  They all (we all) appreciate that multiple factors affect the 
climate system.  A fair reading of the literature leads to this 
conclusion, (quoted from Solanski, S.K. 2002. Solar variability and 
climate change: is there a link?  Astronomy & Geophysics 43(5): 9-13):

"... Obviously, prior to roughly 1980 the solar irradiance on the whole 
ran parallel to and even slightly ahead of the Earth's tmeperature.

"This is consistent with a causal relationship between the two and 
supports, but by no means proves, the view that the sun has had an 
important, possibly even dominant influence on our climate in the past. 
Other contributors to climate variability are volcanic activity, the 
internal variability of the Earth's atmosphere and man-made greenhouse 
gases. After 1980, however, the Earth's temperature exhibits a 
remarkably steep rise, while the Sun's irradiance displays at the most a 
weak secular trend. Hence the Sun cannot be the dominant source of this 
latest temperature increase, with man-made greenhouse gases being the 
likely dominant alternative."

Dave

On 12/14/2010 10:41 AM, Eugene Shinn wrote:
> Listers may find this NASA announcement about a global eruption on
> the Sun of interest and some may even suspect a connection with
> climate change and corals.
> <http://science.nasa.gov/science-news/science-atnasa/2010/13dec_globaleruption/>
> Many scientists have proposed that events on the sun, ie., sunspot
> abundance are related to climate change especially the lack
> documented lack of sunspots for around 100 years that is associated
> with the little ice age. Yes I know the IPCC does not consider the
> sun significant and I have read all their reasons and am awasre that
> they remain fully committed to CO2. It will be interesting to see how
> this all plays out now that we have satellites that specifically
> monitor the sun. Gene

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