Re: Wikipedia's climate doctor

In article <Nq8nYKBfgTLLFw8Q@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, Oh No
<URL:mailto:NotI@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Wikipedia's climate doctor
Lawrence Solomon, Financial Post
Published: Saturday, December 19, 2009

http://www.nationalpost.com/opinion/columnists/story.html?id=62e1c98e-01ed-4c55-bf3d-5078af9cb409

There is an interesting problem with the mediaeval warm period - partly
illustrated by the uncertainty in years. Two things: The -global-
temperature at that time does not seem to have matched the 'local'
temperatures, for example there was fresh ice appearing in the antarctic at
the same time:

http://www.ingentaconnect.com/content/ap/qr/2002/00000058/00000003/art02371

A heat seesaw with the southern hemisphere might explain Atacama populations
- to check this this requires a lot more data collecting in S America, S
Africa and Australasia. For eg., in years after La Ninya events in the
Pacific, Nothern hemisphere climate is affected.

And the globeal records suggest the warming may have been localised in
different areas at different times (from 500 to 1500):

http://www.geo.umass.edu/faculty/bradley/bradley2003d.pdf

It might even be that a warm 'spot' drifted slowly around the northern
hemisphere whilst the southern hemisphere cooled.

Cheerio,

--

derek@xxxxxxxxxxxxxxxxx
http://www.farm-direct.co.uk/

.

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