Lemar sararin samaniya rami - wani zamani matsala

Lemar sararin samaniya yana kunshe ne a cikin sharar gas, wanda aka jefarwa da Enterprises, kuma shi ne mai hadarin gaske sinadaran. Shi ne mai matukar aiki rabi, kuma zai iya sa lalata tsarin abubuwa da duk yiwu Tsarin. Duk da haka, lemar sararin samaniya a cikin yanayi ne tuba zuwa cikin wani invaluable taimako, ba tare da wanda rayuwa a duniya za kawai ba ya wanzu.

Stratosphere kira yanayi Layer, wanda ya bi daya da muke rayuwa. A na sama na maida hankali ne akan lemar sararin samaniya, da abun ciki a cikin wannan Layer - 3 kwayoyin da miliyan 10 daban-daban kwayoyin na iska .. Duk da cewa da maida hankali ne sosai low, lemar sararin samaniya aikin wani muhimmanci aiki - shi ne iya tarewa da hanyar hasken ultraviolet zuwa daga sarari lokaci guda tare da hasken rana. UV haskoki da mummunan tasiri a kan tsarin rayayyun tantani kuma zai iya sa da ci gaban cututtuka irin cataracts, ciwon daji da kuma sauran tsanani cututtuka.

A core na kariya na lemar sararin samaniya Layer ne da wadannan manufa. A wannan lokacin, a lokacin da hanyar hasken ultraviolet samu wani kwayoyin na oxygen, akwai wani dauki na tsagawa cikin biyu oxygen kwayoyin halitta. A sakamakon kwayoyin halitta suna a hade tare da undigested kwayoyin, samar da lemar sararin samaniya kwayoyin kunshi 3 oxygen kwayoyin halitta. A wani taro na hasken ultraviolet da lemar sararin samaniya kwayoyin, ya hallaka su karshe uku oxygen kwayoyin halitta. Karfin juyi tsagawa kwayoyin yana tare da kwata 'yanci na zafi, da kuma surface na duniya, ba su cimma.

lemar sararin samaniya rami

A tsari na mayar oxygen a cikin lemar sararin samaniya da kuma mataimakin versa ake kira oxygen-lemar sararin samaniya sake zagayowar. Its inji shi ne daidaita, duk da haka, tsauri canje-canje dangane da tsanani da hasken rana radiation, kuma kakar da bala'o'i, kamar volcanic shigowa. Masana kimiyya sun ƙarasa da cewa mutum ikon rayuwa mummunan tasiri a kan ta kauri. Lemar sararin samaniya? Ãr da aka ruwaito a cikin shekarun da suka wuce, a wurare da dama. A wasu lokuta, shi ya bace gaba daya. Ta yaya za a iya rage korau mutum tasiri a kan ce zobe?

Lemar sararin samaniya ramuka faruwa saboda gaskiyar cewa aiwatar da lalata m Layer faruwa yafi tsanani fiye da ya tsara. Wannan shi ne saboda gaskiyar cewa a cikin shakka daga rayuwar mutum yanayi da aka ƙazantar da daban-daban lemar sararin samaniya-depleting mahadi. Wannan, a sama da dukan, chlorine, bromine, sunadarin flourine, carbon da hydrogen. Masana kimiyya yi imani da cewa chlorofluorocarbon mahadi ne babban barazana ga lemar sararin samaniya Layer. Suna amfani da ko'ina a refrigeration tsarin, masana'antu kaushi, iska conditioners da aerosol gwangwani.

Chloro, kai da lemar sararin samaniya reacts tare da lemar sararin samaniya kwayoyin mu'amala. A sinadaran dauki haifar chlorine oxide da kwayoyin oxygen. Bayan ganawa chlorine monoxide tare da free oxygen faruwa wani hulda a wadda chlorine da aka saki, kuma akwai wani oxygen kwayoyin. Daga bisani Sarkar maimata da ita saboda chlorine ne ba iya wuce iyaka da yanayi ko zuwa ƙasa. Lemar sararin samaniya ramuka - wani sakamako na rage taro na kashi saboda ta m tsakiyan nonon a bayyanar a cikin Layer na waje dan hanya yayan.

sarrafawa

The most lemar sararin samaniya rami a kan Antarctic da aka gano. Su size ne kusan daidai da yanki na nahiyar. Wannan yanki ne da wuya a zaune, amma masana kimiyya sun nuna damuwa da cewa rata iya yada zuwa wasu yankunan na duniya, dauke da lugar. Shi ne fraught da muhalli bala'i da mutuwa na Duniya.

Don hana rage daga cikin lemar sararin samaniya Layer dole ne farko rage depleting abubuwa jefarwa da yanayi. A shekarar 1987 ya aka sanya hannu da Montreal yarjejeniya a kasashe 180, wanda ya samar da ga rage watsi da abubuwa dauke da chlorine, a wani phased yanayin. Yanzu lemar sararin samaniya rami an rage, da kuma masana kimiyya sun fatan cewa halin da ake ciki da aka gyara a shekarar 2050.