by W. Eschenbach, July 6, 2025 in WUWT

ery so often, the climate media machine spits out a headline so breathless you’d think the laws of physics had just been accidentally repealed by a badly-worded executive order. Case in point: bne IntelliNews in Germany recently told us that a “major ocean current in the Southern Hemisphere has reversed direction for the first time in recorded history,” and that climatologists are calling it a“catastrophic” tipping point. It also quotes a climatologist as saying “The stunning reversal of ocean circulation in the Southern Hemisphere confirms the global climate system has entered a catastrophic phase.”

And the headline for that hysteria?

Southern Ocean current reverses for first time, signalling risk of climate system collapse

The implication: pack your bags, the climate apocalypse is here, and don’t forget your floaties.

But as is so often the case, the devil isn’t just in the details—it’s in the words they didn’t mention. The article, like a magician with something up both sleeves, never links to the actual scientific study.

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So, after a bit of digital spelunking, I dug up the source. It’s an article in PNAS, the Proceedings of the National Academy of Sciences, yclept “Rising surface salinity and declining sea ice: A new Southern Ocean state revealed by satellites.”

And when I got to the study, what do you know? The study doesn’t mention “tipping point,” “collapse,” “current reversal,” “Southern Ocean current” or even “overturning circulation.” The only “reversal” in the paper refers to satellites detecting a reversal in surface salinity trends from decreasing to increasing, not a reversal in the the direction of the Southern ocean’s most complex circulation shown above.

So what did the study actually say? Here’s the paper’s abstract:

“For decades, the surface of the polar Southern Ocean (south of 50°S) has been freshening—an expected response to a warming climate. This freshening enhanced upper-ocean stratification, reducing the upward transport of subsurface heat and possibly contributing to sea ice expansion. It also limited the formation of open-ocean polynyas. Using satellite observations, we reveal a marked increase in surface salinity across the circumpolar Southern Ocean since 2015. This shift has weakened upper-ocean stratification, coinciding with a dramatic decline in Antarctic sea ice coverage. Additionally, rising salinity facilitated the reemergence of the Maud Rise polynya in the Weddell Sea, a phenomenon last observed in the mid-1970s. Crucially, we demonstrate that satellites can now monitor these changes in real time, providing essential evidence of the Southern Ocean’s potential transition toward persistently reduced sea ice coverage.”

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