If this story was actually about an "error over data on rising sea levels", it would be interesting. It's only a minor factual mistake that is easily checked and corrected.
The important story is that the change in sea level rolls up many other effects into a single indicator of the extent of global warming, and that sea level is rising faster than IPCC models predict.
The important story is that the change in sea level rolls up many other effects into a single indicator of the extent of global warming, and that sea level is rising faster than IPCC models predict.