27″ March “2022” XIGASHO: REUTERS
Qalfoofka barafka ee Connger ayaa burburay ka dib markii heerkulku bariga Antarctic uu kor u kacay 40C oo ka sarreeya sidii caadiga ahayd horaantii bishan,iyadoo Dunidu waxa ay wajahayso masiibo cimilo
Sawirka dayax-gacmeedka ee NASA Modis ee barafka bari ee Antarctica bishii Maarso 21. Shelf Conger Ice Shelf ayaa la rumeysan yahay inuu dumay 15-kii Maarso [Satellite NASA Modis ee loo maro Reuters]
Barafka bari ee Antarctica ayaa burburay bishaan ka dib markii uu kuleyl aad u daran uu ka jiray gobolka, saynis yahano ayaa sheegay.
Sawirrada dayax-gacmeedku waxay muujinayaan 1,200sq km (463sq miles) Conger Ice Shelf ayaa gabi ahaanba dumay ama agagaarka March 15.
‘Masiibo Cimilo’: Dunidu waxa ay wajahaysaa heer kulka 2.7C
“Suurtagal ma tahay inay ku dhufato barta ugu sarreysa ka dib #Antarctic #Atmospheric River iyo kulaylka sidoo kale?” Catherine Colello Walker oo ah Saynisyahanka Dhulka iyo Planetary ee NASA ayaa Twitter ku waydiisay Jimcihii, iyada oo la wadaagaysa sawirada baraf cad oo ku dunsan jeexjeexyo korka badda madow.
Shelefyada barafka, sabbaynaya oo joogto ah oo dhulka ku dheggan, waxa ay ku qaataan kumanaan sano in ay samaysmaan oo ay u dhaqmaan sidii habab celinaya barafka oo haddii kale ku qulquli lahaa badweynta, taasoo keenaysa in baddu kor u kacdo.
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Kulaylka March, oo heerkulku gaadhay 40C (70F) oo ka sarreeya heerka caadiga ah qaybo ka mid ah Bariga Antarctica, ayaa ku xidhnaa ifafaalaha webiga jawiga, ayuu yidhi Peter Neff, oo ku takhasusay glaciologist ee Jaamacadda Minnesota.
Nidaamkani wuxuu abuuraa tiirar boqolaal kiiloomitir dheer ah oo ka qaada uumiga biyaha ee kulaalaleyda, taasoo abuuraysa saameyn Neff lagu tilmaamay “tuubo dab ah oo qoyaan ah”.
Ballanqaadyada cimiladu waa daciif, laakiin ma aha goor dambe in la qabto
“Cimilada [Antarctic] waa mid aad u kala duwan laakiin tani waxay ahayd mid ka baxsan qiyaasta,” Neff ayaa yidhi. “Tani waxay ahayd ugu yaraan laba jeer oo ka daran dhacdo kuleyl ah sidii aan filan lahayn.”
Heerkulka gobolku wuxuu inta badan fadhiyaa -51C (-60F) wakhtigan sanadka, laakiin waxay ahaayeen ilaa -12C (-10F) horaantii bishaan.
Qaarada barafaysan ayaa si tartiib tartiib ah uga jawaabeysa isbeddelka cimilada marka loo eego Arctic, oo sii kululaaneysa saddex jeer heerka adduunka intiisa kale.
Qarnigii la soo dhaafay, Bariga Antarctica gabi ahaanba si dirqi ah ayuu u kululaa, laakiin gobollada qaar ayaa saameeyay, qaaradana waxay lumisay celcelis ahaan 149 bilyan oo tan oo baraf ah sanadkii 2002 ilaa 2020, sida ay sheegtay NASA. Luminta Shelf Barafka Conger waa tusaalihii ugu dambeeyay ee isbeddelada socda.
“Cadkan yar ee barafka liita waxa uu ku xidhnaa nolosha qaaliga ah ee cimiladan kulul ee xeebta, wayna sii yaraanaysay oo dhaawacday dhawrkii sano ee la soo dhaafay,” ayuu yidhi Neff.
Shelf-ka Conger-ka waxa uu ahaa mid kala go’ay muddo dheer ka hor kulaylka, dhimashadiisuna waxa ay muujinaysaa nidaamka Antarctica in uu xasaasi u yahay isbeddellada jawiga, laakiin dhacdada lafteedu maaha wax walaac ah, ayuu yidhi Ted Scambos, oo ah saynisyahan sare oo cilmi-baaris ah oo ka tirsan Jaamacadda Colorado Boulder.
Baraf yar oo ka dambeeya halkii uu hore u fadhiyi jiray Conger ayaa laga yaabaa inuu hadda si degdeg ah u qulqulo oo uu baraf yar ka dejiyo badda, ayuu yidhi.
“Haddii ay ku jiri lahayd dayrka dambe waxay ahaan lahayd mid aad u weyn … laakiin marka la eego heerarka Antarctic iyo heerarka badda, waa aag yar,” ayuu yidhi.
XIGASHO: REUTERS