"ray" <> wrote in message
news:
> On Thu, 01 Jan 2009 19:15:32 -0800, John Navas wrote:
>> On 2 Jan 2009 01:42:40 GMT, ray <> wrote in
>> <>:
[...]
>>> I don't think that IS the problem. You may have noticed that the
>>> last couple of years have been cooler rather than warmer - has
>>> mainly to do with sunspot activity.
>>
>> Can you cite any serious scientists in support of that?
>>
>> I'll save you the effort: no, because they don't agree.
>
> Don't have to. All you have to do is look at the climatic record.
DAVID KAROLY: Yes, the climate system did cool from January 2007 to January
2008 quite dramatically. That cooling was associated with changes in the
ocean temperatures in the Pacific, a well known phenomenon, the El Nino to
La Nina switch. It isn't unprecedented.
EMILY BOURKE: But you're not attributing that in any way to sunspot
activity.
DAVID KAROLY: We know it is not due to sunspot activity. Sunspot variations
do not lead to the sorts of temperature variations seen from January 2007 to
2008. They don't lead to those large temperature variations, even on an
11-year sunspot cycle.
And so in terms of increasing greenhouse gases, we can also see that effect
because the most recent La Nina, the current La Nina, is warmer than earlier
La Nina episodes of the same strength. We're actually seeing a warming even
in these cool periods associated with La Nina.
http://www.abc.net.au/pm/content/2008/s2225759.htm
NB: David Karoly is Professor of Meteorology at the University of Melbourne.