Stratospheric ozone yog naturally-ccurring gas uas lim lub hnub ultraviolet (UV) hluav taws xob. Qhov no feem ntau suav hais tias yog 'zoo' ozone vim nws txo cov teebmeem ntawm ultraviolet (UV-B) hluav taws xob. Ib txheej ozone ploj zuj zus tso cai rau cov hluav taws xob ntau dua kom ncav cuag lub ntiaj teb nto.
Vim li cas txheej ntawm stratospheric ozone tseem ceeb?
Cov txheej txheej stratospheric ozone yog lub ntiaj teb "cov tshuaj tiv thaiv tshav ntuj" - tiv thaiv cov khoom muaj sia los ntawm ntau dhau ntawm ultraviolet hluav taws xob los ntawm lub hnub. Cov emission ntawm ozone depleting tshuaj tau ua puas lub ozone txheej.
Dab tsi yog qhov stratospheric ozone depletion?
Ozone Depletion. Thaum chlorine thiab bromine atoms nkag mus rau ozone hauvstratosphere, lawv rhuav tshem ozone molecules. Ib lub chlorine atom tuaj yeem rhuav tshem ntau dua 100,000 ozone molecules ua ntej nws raug tshem tawm ntawm lub stratosphere. … Thaum lawv tawg lawm, lawv tso chlorine los yog bromine atoms, uas ces deplete ozone.
Puas yog stratospheric ozone teeb meem?
Stratospheric ozone yog "zoo" vim tias nws tiv thaiv cov khoom muaj sia los ntawm ultraviolet hluav taws xob los ntawm lub hnub. Av theem ozone, lub ntsiab lus ntawm lub vev xaib no, yog "phem" vim tias nws tuaj yeem ua rau muaj ntau yam teeb meem kev noj qab haus huv, tshwj xeeb tshaj yog rau cov menyuam yaus, cov neeg laus, thiab cov neeg ntawm txhua lub hnub nyoog uas mob ntsws. kab mob xws li mob hawb pob.
Tus txheej txheem tam sim no ntawm stratospheric ozone txheej yog dab tsi?
rau ntauXyoo 2020 lub caij, stratospheric ozone concentrations nyob ib ncig ntawm 20 mus rau 25 km ntawm qhov siab (50-100hPa) mus txog zero qhov tseem ceeb nrog rau ozone txheej qhov tob qis li 94 Dobson Units (ib chav ntsuas), lossis kwv yees li ib feem peb ntawm nws tus nqi ib txwm.
