Sunday, March 21, 2010

Interglacial Crash

Interglacial Crash

In the last Interglacial the sea level rose steadily, and other indicators confirm that it kept getting warmer. Then at the end there was a relatively quick change. Sea level started falling at 1cm per year: which is a lot of ice building up somewhere. I've never heard of a climate simulation that demonstrated this crash. Well here's a picture of the current heat anomaly that I've nicked (the link to) from John Baez's Diary:


If the sea gets warm (and big) leading to lots of moisture [notwithstanding the silly predictions of warming leading to drought] then you get a lot of snow. Then maybe at some point the CO2 negative feedback starts to kick in [and they must exist: to claim otherwise is to claim that the previously stable CO2 level was an unstable equilibrium], CO2 drops but the water remains warm. Then maybe the sun goes quiet or there are a few big volcanoes in a row ["year without a summer"]. The snow persists and reflects. All seems too easy...