[John Mason]

Chris Lloyd, on 19 February 2012 - 17:28, said:

But surely the lower Co2 levels were due to sequested Co2 in the oceans and conversely as it warmed back up the oceans released the Co2 back into the atmosphere.

Surely, it is as simple as that isn't it John.

Climate drives Co2 levels - not the other way round.

Not exactly: Milankovitch Cycles drove the warming & cooling, and the CO2 released e.g. from permafrost decay in transitions from glacials to interglacials amplified the warming. So you have tipping-points relative to Earth's orbital cycles and CO2 acting as an alternatively negative or positive feedback. Did I not say ages ago that it is the thermostat of the planet?

Cheers - John

[ldavidcooke]

Hey Guys,

We really do seem to have an issue of inaccurate est. wrt the weighing of the size and volume of sinks wrt CO2. At best we can est. man's output, because we measure it, all others are SWAGs...

[andre]

And so the thread goes into deep waters again. There is an awful lot going on in the oceans during the glacial transitions, as well as a lot of volcanic events. Really some random guesses dont work here. Google Raymo Lisiecki for instance. More later.

[Uskys]

NileQueen, on 19 February 2012 - 11:46, said:

The Little Ice Age onset started in 25 yrs from 1275 to 1300 A.D.

Read Miller et al. 2012 Abrupt onset of the Little Ice Age triggered by volcanism
and sustained by sea-ice/ocean feedbacks. GEOPHYSICAL RESEARCH LETTERS, VOL. 39, L02708, doi:10.1029/2011GL050168, 2012

And then everybody forgets about the warm periods in the UK perticularly dround 2000bc and then again during the Roman occupation till around 350AD .

But this is it, we are living now on an age of predicted climate which is totally man-made unreal and self-indulgent, not actual climate . Our actual climate is still rather cool in the UK compared to it in some of the past.

[ldavidcooke]

Hey Andre,

As long as the CO2 was inert and had not combined with calcium in the polar oceans at roughly 5000 Pa and 277K it should solidfy, what part of that is guess work? By the same token, given the increased surface area and sea surface temperatures in the 277K range, except near cross meridian ocean currents, the amount of CO2 going into solution should be roughly breakeven to former low latitude sequestration rates. With increased SSTs the CO2 concentrations should demonstrate a distribution difference by latitude. It really is to bad the NASA satellite failed to go into orbit... On the other hand looking at the change in SST and SSS certainly demonstrates that polar regions are warmer, along with the loss of sea surface ice... That portion of the physical evidence is valid.