Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A cikin 1974 Frank Sherwood Rowland, Farfesa na Chemistry a Jami'ar California a Irvine, da abokin aikinsa Mario J. Molina sun ba da shawarar cewa mahaɗan halogen masu rai na dogon lokaci, kamar CFCs, na iya yin aiki a cikin irin wannan yanayin kamar yadda Crutzen ya ba da shawara ga nitrous oxide. James Lovelock kwanan nan ya gano, yayin tafiya a Kudancin Atlantic a 1971, cewa kusan dukkanin mahaɗan CFC da aka ƙera tun lokacin da aka ƙirƙira su a 1930 har yanzu suna cikin yanayi. Molina da Rowland sun kammala cewa, kamar N2O, CFCs za su isa stratosphere inda za a raba su da hasken UV, suna sakin ƙwayoyin chlorine. Shekara guda da ta gabata, Richard Stolarski da Ralph Cicerone a Jami'ar Michigan sun nuna cewa Cl ya fi NO inganci wajen haifar da lalata ozone. Michael McElroy da Steven Wofsy a Jami'ar Harvard sun zo ga irin wannan kammalawa. Kowane rukuni, duk da haka, bai fahimci cewa CFCs na iya zama babban tushen chlorine na stratospheric ba. Maimakon haka, sun bincika yiwuwar tasirin HCl daga fitowar Space Shuttle, wanda ya fi ƙanƙanta.  Tambaya: A ina ne Rowland ya yi aikin farfesa?
Jami'ar California a Irvine