Thursday, August 29, 2013

Oceans and clouds are driving Anthony Watts crazy

Sou | 2:08 AM Feel free to comment!

This is just a quick heads up in case you bump into a science denier and they raise the topic - so you know what they are talking about.

Anthony Watts at WUWT has just posted an article about this because he finds it funny.  I can see the funny side too, in the way it's written up at Grist.  Unlike Anthony I don't find it ridiculous.  I see the serious side. Anthony writes it up as Climate Craziness of the Week (archived here to save you a trip):
Over at Grist, where “burnt out” David Roberts just threw in the towel, the craziness continues with a new alarmist writer:

I'll get to the point.  There is a new paper in Nature Climate Change by Six et al called Global warming amplified by reduced sulphur fluxes as a result of ocean acidification.  Here is the abstract:

Climate change and decreasing seawater pH (ocean acidification)1 have widely been considered as uncoupled consequences of the anthropogenic CO2 perturbation2, 3. Recently, experiments in seawater enclosures (mesocosms) showed that concentrations of dimethylsulphide (DMS), a biogenic sulphur compound, were markedly lower in a low-pH environment4. Marine DMS emissions are the largest natural source of atmospheric sulphur5 and changes in their strength have the potential to alter the Earth’s radiation budget6.
Here we establish observational-based relationships between pH changes and DMS concentrations to estimate changes in future DMS emissions with Earth system model7 climate simulations.
Global DMS emissions decrease by about 18(±3)% in 2100 compared with pre-industrial times as a result of the combined effects of ocean acidification and climate change. The reduced DMS emissions induce a significant additional radiative forcing, of which 83% is attributed to the impact of ocean acidification, tantamount to an equilibrium temperature response between 0.23 and 0.48 K. Our results indicate that ocean acidification has the potential to exacerbate anthropogenic warming through a mechanism that is not considered at present in projections of future climate change.

Here's the link to the Grist article. Vanishing ocean smell could also mean fewer clouds.

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