BBC yatangaje ko icyo gicu cyagaragaye kibuditse mu Majyefo y’umurongo ugabanyamo Isi kabiri (équteur), ahagana mu Burengerazuba bw’Inyanja ya Pacifique. Satellite y’Abanyamerika izwi nka Noaa-20, niyo yafashe ibyo bipimo ku wa 29 Ukuboza 2018.
Hasobanurwa ko igicu gikonja cyane kiri mu ntera ndende uva ku Isi, aho umwuka uva mu butaka cyangwa amazi uzamuka ukarenga igice cy’ikirere cyegereye Isi (troposphère), ukagenda wikusanyiriza hamwe ugaturiza mu gice gikurikiyeho kizwi nka stratosphère. Icyo gicu cyagaragaye mu butumburuke bwa kilometero 20,5.
Umushakashatsi mu by’ikirere wo muri Kaminuza ya Oxford, Dr Simon Proud, yasobanuye ko ubwo buryo bwitwa “dessus de dépassement” ndetse bubaho kenshi.
Dr Proud n’Umunyamerika Scott Bachmeier bakoze iyo nyigo, basobanuye ko ubwo bukonje budasanzwe bw’igicu bwaturutse ku bushyuhe bw’amazi y’inyanja yo muri ako gace, ndetse n’imiyaga ihuha yerekeza mu Burasirazuba izwi nka “Oscillation de Madden-Julian” ishobora gutera ubuhehere mu kirere cyangwa igatuma habura imvura.
Ku rundi ruhande, abo bashakashatsi bavuze ko agace kari hagati ya troposphère na stratosphère kari kugenda gashyuha, bityo ko hakwitegwa no kubona igicu gishyushye.
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