On Mar 9, 10:17 pm, Rodney Blackall
wrote:
In article om,
Bonos Ego wrote:

Just finished watching the programme, one word Brilliant.

Recorded it, waiting for time to watch it.

This programme was ground breaking, and a voice that goes against man-
made global warming, with some hard evidence to back it up.
I found the bit about C02, and sea temperatures lagging actual warming
very plausible, and made perfect sense that all of this planet's
warming is down to our Sun's solar activity.

It makes no sense at all. And the hypothesis can be ruled out by
observational data. The sun has not changed brightness sufficiently in
the past few decades to explain the observed warming trend.

If ALL the warming is due to solar activity, then there should be a
temperature cycle to match the sunspot cycles. There is not in any of the
data I have been shown. Perhaps the ratio of carbon12:carbon14 was shown to
be changing in line with the increased solar output (which I do not think
the scientific satellites have detected yet).

The amount of change in solar output is about 0.1% or 1W/m^2 on around
1370W/M^2. It is way to small to be measurable directly although it is
thought perhaps to couple to some resonances in the long term weather/
oceanic currents.

There was a thread about this very topic in sci.astro.amateur last
week.
MSGID: BkYHh.31287$Du6.1493@edtnps82

Taken from one of the answers to that thread by Canopus56
--quote--
Moore, John; Grinsted, Aslak; Jevrejeva, Svetlana. 9/2006. Is there
evidence for sunspot forcing of climate at multi-year and decadal
periods? 2006GeoRL..3317705M
http://adsabs.harvard.edu/cgi-bin/np...eoRL..3317705M

"We conclude that the 11-year cycle sometimes seen in climate proxy
records is unlikely to be driven by solar forcing, and most likely
reflects other natural cycles of the climate system such as the 14-
year cycle, or a harmonic combination of multi-year cycles."

Siquig, R. A.; Hoyt, D. V. 1979. Sunspot structure and the climate of
the last one hundred years. 1979LPICo.390...93S
http://adsabs.harvard.edu/cgi-bin/np...PICo.390...93S

Sunspot numbers as a proxy for solar luminence do not provide a better
fit to observed climate variations than pre-existing volcanic dust
models.
--end quote--

Regards,
Martin Brown