London Banter - View Single Post - "Heathrow and Gatwick airports: Ministers mull rail link" (twixt the two)

Graeme Wall

On 14/10/2011 21:04, d wrote:
On Fri, 14 Oct 2011 19:34:22 +0100
Graeme wrote:
Oh really? How come we've had some of the the hottest years on record in the
last few decades then? How does that square with a cooling trend exactly?

IIRC we are midway along a warming-cooling curve, ie at the warmest
point so it should be getting cooler from now on. Trouble is it is a
42000 year cycle so it will be 10000 years or so before we notice.

Presumably most of that 42000 cycle is cooling then given how quickly the
warming happened in the last 200 years because if it cooled as fast we'll
be at absolute zero long before the end of the cycle.

B2003

No, it's 21000 warming then 21000 cooling. Has to do with changes to
the Earth's orbit around the Sun. One consequence is that there is a
theory that the only thing preventing the imminent onset of the next
ice-age is anthropogenic global warming. Unfortunately for it's wilder
advocates they assume a very compressed time scale.

--
Graeme Wall
This account not read, substitute trains for rail.
Railway Miscellany at www.greywall.demon.co.uk/rail