Extended Data Fig. 4: Test of gravitational fractionation corrections for δ18O18O in LOCK-IN firn.
From: Isotopic constraint on the twentieth-century increase in tropospheric ozone
Shown are the corrections obtained using the δ15N value of N2 measured at LSCE (black stars), the δ18O value of O2 measured at LSCE (green crosses), the δ18O value of O2 measured at Rice University (red circles) and the ∆36 value of O2 measured at Rice University (empty blue circles).
