Saw a chart that showed that, here on FR, at least eight years ago.
Yes, what has been said for years is that the ice cores reveal that increases in atmospheric CO2 appear after increases in temperature. In fact, this paper acknowledges that with:
Instead, just as in the ice cores, CO2 levels are found to be a lagging effect of ocean warming...
But while the ice core analysis deals with large temperature swings, and a lag of several hundred years for CO2 increase, this new paper apparently deals with recent temperature changes (which would be very slight changes by comparison) and lags of less than a year in CO2 changes. I haven't read the actual article because I don't want to pony up the $40, but that seems to be what the blog is saying.