Iɣallen-a s waṭas i d-yettbanen tiɣmi n usemmiḍ deg waggur n mayyu i d-yesseḍran s waṭas tiɣmi n usemmiḍ deg waggur n yunyu deg iseggasen yemgaraden. Ma yella yella-d El Nio (EL) deg useggas-nni, ur d-yettban ara yesεa azal ameqqran i yigmaḍ. AAAS d EurekAlert! ur d-ttekkint ara d imḍebbren n yisallen i d-yettwasebden seg tkerkasin i d-yettekkren.