Mukuchinja kwemamiriro ekunze pamwe nemhedzisiro yazvo pasirese zvakajairika, hunhu hweakakura masasi echando eAntarctic kondinendi inoita basa rakakosha. Chimwe chezvikonzero chikuru zvekushanduka kwemamiriro ekunze ndiko kuwedzera kweye greenhouse mhedzisiro inokonzerwa nekusvibisa kwakanyanya kubva kumabasa ehupfumi hwevanhu.
Masayendisiti enharaunda akagadzwa semuganhu wekukwira kwetembiricha tembiricha yepasi kuwedzera kwemadhigirii maviri. Kubva ipapo, shanduko mumhepo yedu uye mafomu ehupenyu anga atove asingachinjiki uye asingafungidzike. Ndosaka nyika dzinopfuura zana dzakabatana mukurwisa shanduko yemamiriro ekunze uye dzakabvuma Chibvumirano cheParis.
Zvidzidzo zvakaburitswa mumagazini reNature zvinoratidza kuti iwo machizi eEast Antarctica anoita kunge aripo nzvimbo dzinotambura zvakanyanya kusati kwaitika shanduko yemamiriro ekunze. Izvi zvinokonzeresa kusava nechokwadi kukuru pamusoro pekukwira kwenzvimbo yegungwa izvo zvichave nekusangana mumakore anotevera sezvo mazaya echando munzvimbo iyoyo ari kunyungudika nekukurumidza kupfuura zvaitarisirwa.
Ichokwadi chekuti nzvimbo idzi dziri kunyungudika kare pane zvaitarisirwa zvinoratidza kuti dzinotarisisa shanduko yemamiriro ekunze. Boka revanyanzvi muBelgium, Netherlands neGerman rakaongorora data rakawanikwa kubva kumunda, mamodheru emamiriro ekunze uye mifananidzo yemasaiti. Kutenda kune aya data, chikonzero nei ino nharaunda iri munjodzi inozivikanwa. Inofanira kuva kumhepo ine simba inotakura mweya unopisa uye iri kufambisa chando kubva pamusoro payo. Kunyangwe kunyangwe izvi, nyanzvi dzisingakwanise kufanotaura zvakanaka hunhu huchave nenzvimbo ino zvine chekuita nemupiro mukuwedzera kwegungwa muAntarctica.
Iko kusuduruka kwechando pamusoro pechando nemhepo inopisa, yakaoma inogadzira imwe microclimate yemuno yakadzikama uko kunowoneka nhamba shoma yenzvimbo dzinopisa, kusanganisira chishamiso chakavanzika chakawanikwa makore mashoma apfuura paKing Baudouin ice shefu. Kare ikako pakawanikwa crater yaifungidzirwa kuti ndeyemhedzisiro yemeteorite. Asi nhasi zvave kutozivikanwa kuti idziva rakadhirika rine chigayo mukati. Chigayo ichi igomba rinobudisira mvura mugungwa.
Nekudaro, kutsvagisa kunoitwa nemapoka emazano kwakawanikwa madhamu mazhinji ane mvura yemvura yakavanzwa pasi pechando. Mamwe emakungwa aya akareba makiromita akati wandei. Uhwu hunogona kuve humbowo hwekuti mhedzisiro yekushanduka kwemamiriro ekunze iri kuwedzerwa munzvimbo idzi dzakashupika sezvo mvura inonyungudika mu crater ichiwedzera zvakanyanya kubva pagore kusvika kune rinotevera.
Imwe fundo kubva kumayunivhesiti muUnited Kingdom, New Zealand, Germany uye United States yakadzidza hunhu uye kukosha kwemakomo echando eAntarctic. Zvinogumiswa kuti vanoita basa rakakosha mukushanduka kwemamiriro ekunze nedunhu, vachikwanisa kutsanangura chikonzero nei echando chegungwa kumaodzanyemba kwenyika. yakaramba ichikwira, kunyangwe kudziya kwakaitika mune rese pasirese.
Mazhinji emhando dze paleoclimatic dzinoedza kutsanangura shanduko yemamiriro ekunze munhoroondo yese hadzina kufunga nezve kusiyanisa kwemamiriro ekunze kwakave kwakanyorwa pane zvinyorwa zvepaleoclimatic, ndosaka zvisina kukwana.
"Mazhinji echando anotsemuka kubva kuAntarctic ice sheet anotenderera munzvimbo ino nekuda kwekupararira kwemhepo uye kwemakungwa", anodaro mune chirevo Michael Weber, paleoclimatologist paYunivhesiti yeCambridge (UK).
Masayendisiti anotsigira kuti nguva dzakaitika munhoroondo yese yekuchinja pakati pekurasikirwa uye kuwedzera kwemazaya echando dzave ne "kukanganisa kunoshanda”Kunyanya mamiriro ekunze. Ndokunge, shanduko mumamiriro ekunze akaitika kwemakumi emakore inogona kuve nemhedzisiro pane yakawanda ice chando cheAntarctica uye icho chinogona kuramba chichiwedzera uye mhedzisiro yeshanduko yemamiriro ekunze iri kuramba ichiwedzera.