ozone_11sept2014[1]

Atmospheric concentration of an ozone destroying chemical drops mysteriously

From the “possible measurement error” department. Larry O’Hanlon (via AGU blogs) writes: Something strange has happened to the atmospheric concentration of a newly discovered, human-made, ozone-destroying gas: it has suddenly dropped and nobody knows why. The gas, HCFC-133a, is a type of hydrochlorofluorocarbon, ozone-destroying compounds used in some industrial processes, including the manufacturing of refrigerants.…