eyona ndawo ibandayo emhlabeni

Oosonzululwazi sele besazi ukuba awona bushushu obuphantsi awakhe alinganiswa eMhlabeni akwindawo enomkhenkce ekwimpuma yeAntarctica, kufutshane neSouth Pole. Kodwa kutshanje baye bafumanisa ukuba amaqondo obushushu apho anokuhla nangaphantsi kunalawo ebekade elinganisiwe.

Ngo-2013, uhlalutyo lwedatha yesathelayithi ichonge iipokotho ezisasazekileyo zomoya obanda kakhulu kwi-Antarctic Plateau phakathi kweArgos Dome kunye neDom Fuji - amaqondo obushushu ehle asezantsi nge-135 degrees Fahrenheit (zero 93 degrees Celsius).

Nangona kunjalo, uhlalutyo olutsha lwedatha efanayo lubonisa ukuba phantsi kweemeko ezifanelekileyo, la maqondo obushushu anokuhla aye phantse kwi-148 degrees Fahrenheit (minus 100 degrees Celsius), ekusenokwenzeka ukuba lelona qondo lobushushu libandayo elinokufikelela eMhlabeni, ngokutsho kwabaphandi kuphononongo olutsha.

Kwi-Antarctica egqunywe ngumkhenkce, ubushushu obuphakathi kwiinyanga ezimnyama zobusika bumalunga ne-30 degrees Fahrenheit (minus 34.4 degrees Celsius). Kuphononongo olutsha, izazinzulu zihlalutye idatha eqokelelwe ngoJulayi no-Agasti phakathi kwe-2004 kunye ne-2016. Amaqondo obushushu alinganiswa kwizitya ezincinci ze-East Antarctic Plateau kufuphi ne-South Pole, kwindawo yokuphakama kweenyawo ze-12 (467 yeemitha). amaqondo okushisa amatsha amarekhodi axhaphake, abonakala kwiindawo ze-3 kwiindawo zokudandatheka ezihlakazekileyo, "ummandla obanzi" we-plateau.

Ebudeni bobusika bencam yencam, kukho ixesha elide elinesibhakabhaka esicacileyo kunye nemimoya ebuthathaka. Kunye - nje ukuba ezi meko ziqhubeka - zinokupholisa umphezulu wekhephu kunye namaqondo obushushu asezantsi, ngokutsho kophononongo.

Ngo-2013 nakwisifundo esitsha, abaphandi balinganisa imilinganiselo yesathelayithi yobushushu obufanayo kunye nedatha eqokelelwe kwizikhululo zemozulu kumphezulu we-Antarctica. Kuhlalutyo olutsha, abaphandi bajonga ngokutsha idatha yemozulu engaphezulu. Ngeli xesha, baye bafunda ukoma kwe-atmospheric, njengoko umoya owomileyo ubangela ukuba ikhephu liphelelwe bubushushu ngokukhawuleza, utshilo umbhali okhokelayo wophando uTed Schampos, isazinzulu sophando esiphezulu kwiZiko leSizwe leSikhephu kunye noMkhenkce kwiYunivesithi yaseColorado Boulder.

Ngolu hlaziyo, baye bahlengahlengisa idatha yesathelayithi kwaye bafumana umlinganiselo ochaneke ngakumbi wobushushu obuqhaqhazelis’ amathambo kwezo pokotho zikufutshane nePole yoMzantsi. Uphononongo lwafumanisa ukuba amabala afanayo kwithafa elalisaziwa njengelona libandayo eMhlabeni ayesabanda - ngaphezu koko, malunga ne-9 degrees ngokukaCelsius.

Irekhodi elitsha lobushushu eliphantsi liya kubanda njengoko linokubetha uMhlaba. “Kufuneka kubande kakhulu kwaye kome kakhulu kangangeentsuku ezininzi ukuze kuvele amanqanaba anzima,” ucacise watsho uScampos.

"Kukho umda wokuba iimeko zihlala ixesha elide kangakanani ukuvumela ukuba kuphole kumaqondo aphantsi kakhulu, kunye nobuninzi bobushushu onokubufumana ngenene emoyeni, kuba umphunga wamanzi kufuneka ungabikho ukuze ukhulule ubushushu. ukusuka phezulu kula maqondo obushushu,”