Nws qhov - ib tug niaj hnub teeb meem

Nws yog muaj nyob rau hauv lub pov tseg gases, uas yog tawm txim liab los ntawm Enterprises, thiab yog ib tug txaus ntshai tshuaj. Nws yog ib tug heev active caij, thiab muaj peev xwm ua rau xeb ntxwv ntsiab ntawm tag nrho cov tau lug. Txawm li cas los, ozone nyob rau hauv cov cua yog hloov dua siab tshiab rau hauv ib qho invaluable pab, tsis muaj uas lub neej nyob rau lub ntiaj teb yuav tsuas tsis muaj nyob.

Stratosphere hu ua atmospheric txheej, uas raws li nram no rau ib tug nyob rau hauv uas peb nyob. Lub sab qaum kev ib npog ozone, nws cov ntsiab lus nyob rau hauv no txheej - 3 molecules ib 10 lab txawv molecules ntawm huab cua .. Txawm tias muaj tseeb hais tias cov concentration yog muaj tsawg kawg nkaus, ozone ua ib qho tseem ceeb muaj nuj nqi - nws muaj peev xwm sawv ntawm thaiv cov hlab txoj kev ntawm ultraviolet rays los ntawm qhov chaw ib txhij nrog tshav ntuj. UV rays muaj ib tug tsis zoo feem nyob rau cov qauv ntawm nyob hlwb thiab muaj peev xwm ua rau txoj kev loj hlob ntawm cov kab mob xws li cataracts, cancer thiab lwm yam kab mob.

Thaum cov tub ntxhais ntawm cov kev tiv thaiv ntawm lub ozone layer yog cov nram qab no txoj ntsiab cai. Thaum lub sij hawm ntawd, thaum txoj kev ntawm ultraviolet rays pom ib tug qauv ntawm cov pa, muaj yog ib tug tshuaj tiv thaiv ntawm splitting mus rau hauv ob oxygen atoms. Cov uas ua atoms yog ua ke nrog tus undigested molecules, tsim ozone molecules muaj 3 cov pa atoms. Nyob rau ib lub rooj sib tham ntawm ultraviolet rays nrog ozone molecules, rhuav tseg lawv lub xeem peb oxygen atoms. Torque splitting molecules yog nrog los ntawm liberation ntawm tshav kub, thiab tej ntawm lub ntiaj teb, lawv tsis tau tiav.

ozone qhov

Tus txheej txheem ntawm converting oxygen mus rau hauv ozone thiab vice versa no yog hu ua cov pa-ozone voj voog. Nws mechanism yog balanced, txawm li cas los, dynamic hloov nyob rau qhov kev siv ntawm solar tawg, thiab lub caij ntawm natural disasters, xws li volcanic uas. Zaum tau xaus lus tias tus tib neeg muaj peev xwm mus nyob ib tug tsis zoo feem nyob rau hauv nws thickness. Nws havzoov tau qhia nyob rau hauv lub yav dhau los xyoo caum nyob rau hauv ntau qhov chaw. Nyob rau hauv tej rooj plaub, nws xwb kiag li. Yuav ua li cas yuav txo tau qhov tsis zoo tib neeg feem nyob rau hais tias lub nplhaib?

Nws qhov tshwm sim vim lub fact tias cov txheej txheem ntawm kev puas tsuaj ntawm cov kev tiv thaiv txheej tshwm sim ntau npaum li cas mob siab heev tshaj nws tiam. Qhov no yog vim lub fact tias nyob rau hauv lub chav kawm ntawm tib neeg lub neej cua yog polluted los ntawm ntau yam ozone-depleting tebchaw. Qhov no, saum toj no tag nrho, tshuaj, bromine, fluorine, carbon thiab hydrogen. Zaum ntseeg tau hais tias lub chlorofluorocarbon tebchaw yog lub ntsiab kev hem thawj rau lub ozone txheej. Lawv yog lug siv nyob rau hauv cov tub yees tshuab, industrial cov kuab tshuaj, cua txias thiab aerosol poom.

Chloro, ncav qhov ozone reacts nrog lub ozone molecules INTERACTIONS. Cov tshuaj cov tshuaj tiv thaiv generates tshuaj oxide thiab molecule oxygen. Thaum lub rooj sib tham tshuaj monoxide nrog dawb cov pa tshwm sim lwm kev sis raug zoo nyob rau hauv uas cov tshuaj yog tso tawm, thiab muaj ib tug pa molecule. Tom qab saw repeats vim hais tias cov tshuaj yog tsis muaj peev xwm mus dhau tus ciam ntawm cov cua los yog sau mus rau hauv av. Nws qhov - ib tug txais ntawm txoj kev txo concentration ntawm lub caij vim nws sai cleavage nyob rau hauv nws tsos rau hauv lub txheej ntawm txawv teb chaws alien povntawv.

localization

Qhov loj tshaj plaws ozone qhov tshaj lub Antarctic pom. Lawv loj yog yuav luag sib npaug zos rau cov cheeb tsam ntawm lub teb chaws. Qhov no cheeb tsam yog tsis yog inhabited, tab sis zaum tau qhia kev txhawj xeeb uas cov kis yuav kis tau mus rau lwm qhov chaw ntawm lub ntiaj chaw, hnyav ncawv populated. Nws yog fraught nrog ib puag ncig kev puas tsuaj thiab kev tuag ntawm lub ntiaj teb.

Yuav kom tiv thaiv cov yuav txo tau ntawm lub ozone layer yuav tsum xub txo depleting tshuaj tawm txim liab mus rau lub ntuj kaaj quas lug. Nyob rau hauv 1987 nws tau kos npe los ntawm tus Montreal treaty nyob rau hauv 180 lub teb chaws, uas muab rau yuav txo tau ntawm emissions ntawm tshuaj muaj tshuaj, nyob rau hauv ib tug phased hom. Tam sim no lub ozone qhov yog txo, thiab zaum tau qhia txoj kev cia siab hais tias cov teeb meem no yog kho nyob rau hauv 2050.