The phrase "new baseline" refers to a fresh starting point or a new standard or level that is being established. It implies a shift or change from the previous norm or reference point. Full definition
The plan to introduce new baseline tests comes just two years after the government abandoned its last attempt, which ended in disaster. (schoolsweek.co.uk)
But she added new baseline assessments could disrupt the start of school, when young children needed to feel settled not judged. (bbc.co.uk)
Because birds» songs are correlated with their breeding behavior and are easily identifiable to species, monitoring birdsong can be a good way to keep tabs on this possibility, and a new study from The Condor: Ornithological Applications takes advantage of this approach to provide new baseline data for the birds of northern California. (sciencedaily.com)