Last year, I wrote a blog post covering Rosenthal et al 2013 – see here. It reported on interesting Mg-Ca ocean cores in the western Pacific from the foraminfera H. Balthica, which is believed to be a proxy for “intermediate water temperatures”.
The press release stated that the middle depths were warming “15 times faster” than ever before:
In a reconstruction of Pacific Ocean temperatures in the last 10,000 years, researchers have found that its middle depths have warmed 15 times faster in the last 60 years than they did during apparent natural warming cycles in the previous 10,000.
However, the situation was much less dramatic if one parsed the actual data, as shown in the graphic below (taken from my earlier post) redrawn from Rosenthal’s information. Rather than the modern period being “unprecedented”, on this scale, it looks well within historical ranges.
Figure 2. From Rosenthal et al…
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