land ). ▁Short ly ▁after ▁New ▁Years ▁the ▁expedition ▁was ▁visited ▁by ▁the ▁territorial ▁governor , ▁who ▁had ▁tra ve led ▁over land ▁from ▁Th ule , ▁now ▁( Q a ana a q ). ▁ ▁He ▁had ▁learned ▁of ▁the ▁expedition ' s ▁presence ▁in ▁Green land ▁by ▁monitoring ▁their ▁radio ▁broadcast s ▁and ▁instruct ed ▁them ▁to ▁leave ▁at ▁the ▁earliest ▁opportunity . ▁ ▁Ac com pl ish ments ▁ ▁H our ly ▁weather ▁observations ▁started ▁September ▁ 8 , ▁ 1 9 3 7 , ▁and ▁reports ▁were ▁transm itted ▁daily ▁to ▁the ▁US ▁We ather ▁Bureau ▁in ▁Washington , ▁D . C . ▁Pil ot - bal lo on ▁observations ▁were ▁made ▁twice ▁daily ▁except ▁during ▁December ▁and ▁January . ▁All ▁observations ▁were ▁continued ▁until ▁the ▁hour ▁of ▁sail ing ▁July ▁ 7 , ▁ 1 9 3 8 . ▁Mac G reg or ▁believed ▁that ▁accur ately ▁obser ving ▁and ▁plot ting ▁the ▁development ▁and ▁movement ▁of ▁air ▁masses ▁as ▁they ▁moved ▁across ▁the ▁Ar ctic ▁would ▁make ▁possible ▁more ▁precise , ▁longer - range ▁Northern ▁Hem is pher ic ▁weather ▁forec ast ing . ▁In ▁late ▁ 1 9 3 7 ▁Mac G reg or , ▁from ▁Et ah , ▁Green land , ▁gave ▁a ▁long - range ▁weather ▁forec ast ▁for ▁ 1 9 3 8 , ▁based ▁on ▁the ▁observations ▁from ▁his ▁expedition . ▁Two ▁and ▁a ▁half ▁months ▁later , ▁it ▁proved ▁to ▁be ▁amaz ingly ▁accurate . ▁ ▁In ▁February , ▁E skim