Launin ozone, wanda ke kare mu daga hasken ultraviolet, na ci gaba da rauni. Kodayake rami a kan Antarctica yana rufewa, a wuraren da aka fi yawan mutane a duniya kishiyar hakan na faruwa: ƙarancin ozone yana raguwa.
Kodayake har yanzu ba a bayyana dalilin da ya sa hakan ke faruwa ba, masana sun ce wanda ke da alhakin shi ne mutum, ko kuma mafi dacewa, gurbataccen hayakin da yake fitarwa zuwa yanayi.
Ozone gas ne mai matuƙar ƙarfi wanda, fiye da kima, na iya haifar da mutuwa da yawa ga adadi mai yawa na mutane, amma a cikin manyan matakan sararin samaniya, nesa da kusan kilomita 15 zuwa 50, ita ce mafi kyawun garkuwar kariya zai iya bamu Duniya. Can akwai kwayoyin ozone, wadanda suka kunshi atamomin oxygen guda uku, tarko har zuwa 99% na haskoki na ultraviolet kuma kusan dukkanin radiation infrared. Idan ba don wannan Layer ba, da babu rayuwa kamar yadda radiation din zai iya kona fata da tsire-tsire.
Sanin wannan, ba mamaki cewa tun 1985, shekarar da aka gano ramin wannan layin a kan Antarctica, duk shugabannin duniya sun yarda da hana chlorofluorocarbons (CFC). CFCs, waɗanda suke cikin iska da kwandishan, da sauransu, suna raunana sashin ozone. Koyaya, kodayake wannan haramcin ya rage amfani da shi, ya kasa sanya layin yayi karfi.
Dangane da wani bincike, wanda ya ta'allaka ne akan ma'auni daga tauraron dan adam, balan-balan na yanayi da kuma yanayin yanayin yanayi, Tattarawar ozone a tsakiyar da ƙananan yadudduka na stratosphere bai tsaya raguwa ba. A zahiri, an sami raguwar raka'a 2,6 Dobson. Bugu da ƙari, a cikin ƙaramin yanayin sararin samaniya maida hankali ya karu, wanda babbar matsala ce saboda, kamar yadda muka ambata, yawan ozon yana mutuwa ga rayuwa.
Don ƙarin bayani, yi Latsa nan.