Abacwaningi eNyuvesi yaseHarvard basebenza ngohlelo oluqinile lokupholisa Umhlaba. Bahlongoza ukufafaza izinhlayiya zothuli lwe-calcium carbonate ku-stratosphere ukuze kuphole iplanethi ngokubonisa eminye imisebe yelanga emkhathini. Umbono uvela ekuqhumeni kweNtaba iPinatubo ngo-1991, okwajova amathani alinganiselwa ezigidini ezingama-20 e-sulphur dioxide endaweni eyi-stratosphere, apholisa uMhlaba emazingeni okushisa angaphambi kwezimboni izinyanga eziyi-18.
Ibonisa umongo wokukhanya kwelanga
Belandela ezinyathelweni zokuqhuma kweNtaba iPinatubo yango-1991, ososayensi bakholelwa ukuthi inqubo efanayo ingasetshenziswa ukupholisa uMhlaba ngokuzenzela. Lo mzamo wamabomu nomkhulu wokuthonya isimo sezulu soMhlaba ubizwa ngokuthi i-geoengineering.
Abaningi emphakathini wesayensi baye baxwayisa ngomkhuba we-geoengineering, kodwa njengoba ukufudumala kwembulunga kuqhubeka, abanye ososayensi, abenzi bezinqubomgomo, ngisho nezazi zezemvelo bayakucubungula ukusetshenziswa kwayo ngenxa yemizamo yamanje yokunqanda ukufudumala kwembulunga yonke okunganele.
Le phrojekthi ihlanganisa ukusebenzisa ibhaluni eliphezulu ukuthatha imishini yesayensi amamayela angu-12 ukuya emkhathini, lapho kuzokhishwa khona amakhilogremu angu-4.5 e-calcium carbonate. Uma isikhishiwe, izinto ezisebhaluni zizobe sezikala ukuthi kwenzekani emoyeni ozungezile. Ngokusekelwe emiphumeleni kanye nokuhlolwa okwengeziwe okuphindaphindwayo, isinyathelo singalinganiswa ngomthelela weplanethi.
Umthelela ophazamisayo
Ukufafaza uthuli ku-stratosphere kuyisinyathelo esinqala esingaba nemiphumela efinyelela kude kuMhlaba nabakhileyo kuwo.
Umthelela omkhulu ongagcina ube nawo lolu hlobo lwephrojekthi esimeni sezulu soMhlaba kwenze abanye ababukele bathi lo msebenzi weqe umugqa wokuziphatha wokuhlolwa kwesayensi. Abanye baphikisa ngokuthi isintu sesivele sibambe iqhaza ku-geoengineering, ikakhulukazi ngenani elikhulu lokukhishwa kwekhabhoni abantu bomhlaba abaye baphonseka emkhathini kusukela ngenguquko yokuqala yezimboni.
Umphakathi wesayensi kanye namaqembu ezemvelo awunaka kakhulu lo msebenzi, bonke abakhathazekile ngokuthi lolu hlobo lomsebenzi lungaphazamisa ukunaka komhlaba wonke ekwehliseni ukukhishwa kwesisi esingcolisa umoya kusetshenziswa ubuchwepheshe nezinqubomgomo ezikhona.
Izicelo zokubonisa ukukhanya kwelanga
Imizamo yokubonisa ukukhanya kwelanga ingase:
- Ukuphumelela ekupholiseni uMhlaba nokuhlehlisa ukushintsha kwesimo sezulu, kodwa imiphumela yesikhathi eside yephrojekthi ayaziwa.
- Iba nemiphumela enzima nengalindelekile esimweni sezulu soMhlaba, okubangela izinkinga ezingalindelekile zokuphila emhlabeni, njengokuthinta amaphethini omoya, ukwakheka kweziphepho kanye nokudala izinguquko zesimo sezulu ezinoveli.
- Yiba nomthelela omubi noma omuhle ezivunweni zezitshalo emhlabeni jikelele, ikakhulukazi ezindaweni zokulima esezikhahlanyezwe kabi ukushintsha kwesimo sezulu.
- Kuholele emibhikishweni yezazi zemvelo kanye nomphakathi wonkana uma sekwaziwa ubungozi be-geoengineering.
- Misa imizamo yamanje yokukhawulela ukukhishwa kwegesi ebamba ukushisa ngenxa yesithembiso sokuthi i-geoengineering ingapholisa Umhlaba ngaphandle kokudinga ukwenza kanjalo. I-Geoengineering ingamisa ohulumeni, izinkampani ezinkulu, namabhizinisi ekuthatheni izinyathelo ngokumelene nokushintsha kwesimo sezulu.
Imibuzo ongaphawula ngayo
- Ingabe i-geoengineering inesithembiso esihle, noma iwuhlelo oluyingozi olunezinto eziningi eziguquguqukayo ongalawulwa?
- Uma i-geoengineering iphumelela ukupholisa uMhlaba, ingaba nomthelela kanjani ezinhlelweni zemvelo zama-greenhouse emitters amakhulu, njengamazwe nezinkampani ezinkulu?
