Thursday, February 25, 2016

Australia's Barrier Reef at greater risk than thought, study says

Warmist dishonesty never stops.  As I have often pointed out before, warmer oceans will OUTGAS CO2 so the result of global warming  will be LESS acidic oceans.  The only way you can make sense of the reasoning below is to assume that CO2 levels will continue to rise WITHOUT causing any global warming.  So that is certainly an interesting admission.  There is a popular version of the article below here

The exposure of the Great Barrier Reef to ocean acidification

Mathieu Mongin et al.

The Great Barrier Reef (GBR) is founded on reef-building corals. Corals build their exoskeleton with aragonite, but ocean acidification is lowering the aragonite saturation state of seawater (Ωa). The downscaling of ocean acidification projections from global to GBR scales requires the set of regional drivers controlling Ωa to be resolved. Here we use a regional coupled circulation–biogeochemical model and observations to estimate the Ωa experienced by the 3,581 reefs of the GBR, and to apportion the contributions of the hydrological cycle, regional hydrodynamics and metabolism on Ωa variability. We find more detail, and a greater range (1.43), than previously compiled coarse maps of Ωa of the region (0.4), or in observations (1.0). Most of the variability in Ωa is due to processes upstream of the reef in question. As a result, future decline in Ωa is likely to be steeper on the GBR than currently projected by the IPCC assessment report.

Nature Communications, 7, Article number: 10732. doi:10.1038/ncomms10732

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