Fig. 3: Effect of feedstock emissions on stratospheric ozone and climate.
From: Continuing industrial emissions are delaying the recovery of the stratospheric ozone layer
A Mid-latitude effective equivalent stratospheric chlorine (EESC) in ppt for individual ODS (ozone-depleting substances) used as feedstocks, including non-feedstock related contributions (e.g. emissions from banks). ODS not largely used as feedstocks (CFC-11, CFC-12, CH3Cl, CH3Br and several halons) are grouped as Non-Feedstocks. The black and red lines show the total effect of the business-as-usual (BAU) and the low emission (LOW) scenario, respectively; with uncertainties as dashed black lines. The ZERO scenario (projected emissions from banks and other legacies alone, without emissions from feedstock production and usage) is shown as a yellow dashed line. Additionally, the mid-latitude EESC value of 1980 is shown as a red dashed line, as a marker for the return date for the mid-latitude stratospheric ozone. B Radiative forcing in W m–2 as a measure for the influence of Non-Feedstocks and individual feedstock ODS emissions on climate within the BAU, LOW, and ZERO scenario. Lines as in (A).
