Corrigendum used in a sentence

Corrigendum in a sentence as a noun

One could also claim that the corrigendum doesn't apply because foo doesn't "use a member to access the contents of a union".

A corrigendum is that the climate of 30 years ago was already much warmer than the preindustrial norm; in order to return to "normal" we should go back 100 years, and because of this it may be possible that the ice sheet was already warming internally 30 years ago and would have reached this point albeit more slowly had those conditions been maintained.