16 Jan 2011 02:10
[Global Change: 3869] The Pacific Ocean drives climate much more dramatically than the reverse
Robert I Ellison <robert <at> robertellison.com.au>
2011-01-16 01:10:15 GMT
2011-01-16 01:10:15 GMT
Greetings from the flood zone. I am fine - thank you - but traumatised by the deaths and angered and saddened by idiots who seek to make a political point out of tragedy. Both sides of this argument are full of shit - intellectual featherweights who are instant internet experts on everything and are utterly convinced of their own logical infallibility. Both sides angling to blame the deaths and destruction on the other. I wish they would pull their f....... heads in. Rant over - I thought I would see if I could put a ruler under 20 years of work. Neither the floods or the current La Nina are notably unusual over the longer term - it is part of a Pacific decadal pattern that is likely to lead to decades more intense and frequent La Nina. see - http://www.earthandocean.robertellison.com.au/index.html As an Australian hydrologist, I was introduced to the concept of drought dominated and flood dominated regimes (DDR and FDR) in the late 1980’s. These are 20 to 40 year periods dominated by droughts followed by a 20 to 40 year period dominated by floods. The original result was replicated dozens of times across Australia in the following decade. In 1997 the Pacific Decadal Oscillation was described defining a link between sea surface temperatures and fisheries biology. The periods of the PDO modes were exactly the same as the periods of DDR and FDR. An apparent but astonishingly odd link between North American fisheries and Australian rainfall. Over the following decade it emerged that the PDO is part of a pattern of decadal and longer changes in sea surface temperature in the Pacific Basin with teleconnections to Asian, Australian, African and American rainfall - and seemingly to the formation of cyclones in the(Continue reading)
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