-- R.G. Menzies
LIBERTARIAN/CONSERVATIVE DIGEST AND COMMENTARY FROM AN ACADEMIC PSYCHOLOGIST in Brisbane, Australia. My academic publications are widely read
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The article below says that global warming cools the temperature in the Pacific and that a cooler Pacific is likely to produce centuries of drought in California. It appeared just 4 months before the current floods: A very large predictive failure.
But it was a nutty article anyway. The Pacific is the world's largest body of water. Why should global warming cool it? How can something global leave out the Pacific or even a large part of the Pacific? The authors could have avoided the egg currently residing on their faces if they had questioned their finding that warming causes ocean cooling. Such an absurd finding should have led them to question whether or not something was wrong with their research methods. There clearly was.
Prolonged California aridity linked to climate warming and Pacific sea surface temperature
Glen M. MacDonald et al.
California has experienced a dry 21st century capped by severe drought from 2012 through 2015 prompting questions about hydroclimatic sensitivity to anthropogenic climate change and implications for the future. We address these questions using a Holocene lake sediment record of hydrologic change from the Sierra Nevada Mountains coupled with marine sediment records from the Pacific. These data provide evidence of a persistent relationship between past climate warming, Pacific sea surface temperature (SST) shifts and centennial to millennial episodes of California aridity. The link is most evident during the thermal-maximum of the mid-Holocene (~8 to 3 ka; ka = 1,000 calendar years before present) and during the Medieval Climate Anomaly (MCA) (~1 ka to 0.7 ka). In both cases, climate warming corresponded with cooling of the eastern tropical Pacific despite differences in the factors producing increased radiative forcing. The magnitude of prolonged eastern Pacific cooling was modest, similar to observed La Niña excursions of 1o to 2 °C. Given differences with current radiative forcing it remains uncertain if the Pacific will react in a similar manner in the 21st century, but should it follow apparent past behavior more intense and prolonged aridity in California would result.
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