01 / Boundary
Boundary sensitivity
Would shifting the start or end date change the trend?
Multiple reference periods are used and justified, and pre-industrial baselines are stated explicitly. The choice of window is shown not to reverse the central findings.
- Baseline used
- Pre-industrial (1850–1900) reference period, stated explicitly
- Defensible alternative
- Alternative recent-decade baselines are discussed and do not change the direction of findings