The NOAA Earth System Research Laboratory has an "ozone depleting gas index" (ODGI) data set from 1992 to 2018. This dataset summarizes Table 1 and Table 2 from its website. The primary interest here (for my purposes) is the ODGI indices (including the new 2012 measure). The data set includes constituent greenhouse gases/chlorines as well in parts per trillion. The primary use here is for in-class illustration.
Format
A data frame with 62 observations on the following 16 variables.
yearthe year
catcategorical variable for the Antarctic or Mid-Latitudes measurements
cfc12CFC-12 concentration in parts per trillion
cfc11CFC-11 concentration in parts per trillion
ch3clchloromethane concentration in parts per trillion
ch3brbromomethane concentration in parts per trillion
ccl4carbon tetrachloride concentration in parts per trillion
ch3ccl3methyl chloroform concentration in parts per trillion
halonsaggregate concentration in parts per trillion of H-1211, H-1301 and H-2402
cfc113trichlorotrifluoroethane concentration in parts per trillion
hcfcsaggregate concentration in parts per trillion of HCFC-22, HCFC-141b, and HCFC-142b
wmo_minoraggregate concentration in parts per trillion of CFC-114, CFC-115, halon 2402 and halon 1201
sumthe sum of all greenhouse gas concentration measurements
eescincludes consideration of lag times for transport and mixing associated with transport. New as of 2012
odgi_oldold greenhouse gas index, no longer supported as of 2012
odgi_newnew greenhouse gas index, as of 2012