Umhlaba uyindilinga eguquguqukayo futhi isimo sezulu seplanethi, okungukuthi, isimo sezulu somhlaba wonke, naso asizinzile. Akumangalisi ukuthi kunezinganekwane eziningi mayelana nokuthi kwenzekani emkhathini, olwandle nasemhlabeni. Ake sibone ukuthi ososayensi bathini ngezinye zezimangalo zokufudumala kwembulunga yonke.
Ngisho nangaphambi kokuba kufike amaSUV nobuchwepheshe obukhiqiza amagesi abamba ukushisa, isimo sezulu soMhlaba sasishintsha. Akubona abantu ababangela ukufudumala kwembulunga yonke namuhla.
Ukushintsha kwesimo sezulu esikhathini esidlule kusikisela ukuthi isimo sezulu sincike kumthamo wamandla angenayo futhi aphumayo. Uma kunokushisa okungaphezu kwalokho okungakhishwa yiplanethi, izinga lokushisa elimaphakathi lizokhuphuka.
Umhlaba njengamanje ubhekene nokungalingani kwamandla ngenxa yokukhishwa kwe-CO2, yingakho umphumela we-greenhouse. Ukushintsha kwesimo sezulu esikhathini esidlule kufakazela kuphela ukuzwela kwayo ku-CO2.
Ukufudumala okunjani lokhu esikhuluma ngakho uma kuneziqhwa egcekeni lami. Bungenzeka kanjani ubusika obushubile lapho kubhekene nokufudumala kwembulunga yonke?
Izinga lokushisa lomoya endaweni ethile alihlangene nenqubo yesikhathi eside yokufudumala kwembulunga yonke. Ukushintshashintsha okunjalo kwesimo sezulu kufihla kuphela izinguquko esimweni sezulu sisonke. Ukuze baqonde isithombe esikhulu, ososayensi bathembele ekuziphatheni kwesimo sezulu isikhathi eside. Uma ubheka idatha yamashumi eminyaka amuva nje, ungabona ukuthi izinga lokushisa eliphezulu elirekhodiwe lirekhodwe cishe ngokuphindwe kabili kunokwehla okuphansi.
Ukufudumala kwembulunga yonke kumile futhi uMhlaba usuqalile ukuphola.
Inkathi ka-2000-2009 yayishisa kakhulu ngokokubona kwezazi zezulu. Kube nesiphepho esinamandla nesithwathwa esingavamile. Ukufudumala kwembulunga yonke kuyahambisana nesimo sezulu esibandayo. Ngesimo sezulu, izitayela zesikhathi eside, amashumi eminyaka, zibalulekile, futhi lezi zindlela, ngeshwa, zibonisa ukufudumala emhlabeni.
Phakathi namakhulu eminyaka edlule, umsebenzi welanga, kuhlanganise nenani lama-sunspots, uye wanda, ngenxa yalokho, uMhlaba uye wafudumala.
Eminyakeni engu-35 edlule, ilanga belithanda ukuphola nesimo sezulu soMhlaba siyafudumala, kusho ososayensi. Ekhulwini leminyaka elidlule, ukunyuka okuthile kwezinga lokushisa embulungeni yonke kungase kuthiwe kungenxa yomsebenzi welanga, kodwa lokhu kuyisici esingabalulekile.
Ocwaningweni olwanyatheliswa ephephabhukwini i-Atmospheric Chemistry and Physics ngoDisemba 2011, kuthiwa ngisho nangesikhathi sekhefu elide ekusebenzeni kwelanga, uMhlaba uyaqhubeka nokufudumala. Kwatholakala ukuthi ubuso beplanethi buqongelele ama-watts angu-0.58 wamandla angaphezu kwemitha ngayinye yesikwele, ekhishwe emuva emkhathini phakathi kuka-2005-2010, lapho umsebenzi welanga wawuphansi.
До сих пор нет консенсуса относительно того, имеет ли место потепление на планете.
Cishe u-97% wezazi zezulu ziyavuma ukuthi ukufudumala kwembulunga yonke kwenzeka ngenxa yezinto ezenziwa abantu. Ngokwe-website ye-Sceptical Science, emkhakheni wocwaningo lwesimo sezulu (kanye nosizo lwesayensi ehlobene nayo), ososayensi baye bayeka ukuphikisana ngokuthi yini ebangela ukushisa kwesimo sezulu, futhi cishe bonke bafinyelele ukuvumelana.
U-Rick Santorum wafingqa le mpikiswano ezindabeni lapho ethi, “Ingabe i-carbon dioxide iyingozi? Buza izitshalo ngakho.
Nakuba kuyiqiniso ukuthi izitshalo zimunca isikhutha nge-photosynthesis, isikhutha siwukungcola okungathi sína futhi, okubaluleke nakakhulu, umphumela we-greenhouse. Amandla ashisayo avela eMhlabeni athathwa amagesi afana ne-CO2. Ngakolunye uhlangothi, leli qiniso ligcina ukushisa emhlabeni, kodwa lapho inqubo ihamba kakhulu, umphumela uba ukufudumala kwembulunga yonke.
Abaphikisi abaningi bakhomba umlando wesintu njengobufakazi bokuthi izikhathi ezifudumele zivuna intuthuko, kuyilapho ezibandayo zaziholela emiphumeleni eyinhlekelele.
Izazi zezulu zithi noma iziphi izinto ezinhle zidlula imithelela engemihle yokufudumala komhlaba kwezolimo, impilo yabantu, umnotho kanye nemvelo. Ngokwesibonelo, ngokocwaningo, isimo sezulu esifudumele sizokwandisa inkathi yokukhula eGreenland, okusho ukushoda kwamanzi, imililo yequbula evame kakhulu kanye nokwanda kwezingwadule.
Ледовое покрытие Антарктиды расширяется, вопреки утверждениям о таяние льдов.
Kunomehluko phakathi kweqhwa lomhlaba nelasolwandle, kusho ososayensi. Isazi sesimo sezulu uMichael Mann sathi: “Ngokweqhwa lase-Antarctica, kuba khona ukunqwabelana kweqhwa ngenxa yokufudumala nomoya omanzi, kodwa iqhwa elincane emaphethelweni ngenxa yokufudumala kwezilwandle eziseningizimu. Lo mehluko (ukulahlekelwa okuphelele) kulindeleke ukuthi ube mubi phakathi namashumi eminyaka.” Izilinganiso zibonisa ukuthi amazinga olwandle asevele enyuka ngenxa yokuncibilika kweqhwa.