CFCs responsible for half of Arctic sea-ice loss

If there was any real measurable warming of surface atmosphere temperatures in the late 20th century, then it was caused by CFCs and not carbon dioxide!

I have my doubts that CFCs indeed contributed so much to such warming. Most likely any such reported warming is more attributable to measurement error or deliberate manipulation of data (e.g. heat island effect, Climategate scandal).

"On a molecule-by-molecule basis, halogenated organic compounds trap much more heat in the atmosphere than most other known compounds. For example dichlorodifluoromethane (CFC-12) has a global warming potential almost 11,000 times that of carbon dioxide. This means that, although ODS [ozone-depleting substances] might exist in much smaller atmospheric concentrations than other greenhouse gases, their impact can be just as significant. ... Polvani’s team calculated that one third of global warming during the second half of the 20th century was due to heat trapped by halogenated compounds. During this period, ODS were responsible for almost half of the warming and sea-ice loss witnessed in the Arctic." As usual numbers & figures are not provided! The result of this researuch is dubious!

CFCs responsible for half of Arctic sea-ice loss | Research | Chemistry World: Halogenated compounds responsible for one third of global warming in the late 20th century