place ▁poll ut ants ▁from ▁the ▁polar ▁air ▁mass ▁in ▁spring , ▁Ar ctic ▁ha ze ▁can ▁l inger ▁for ▁more ▁than ▁a ▁month ▁in ▁the ▁northern ▁atmosphere . ▁ ▁History ▁Ar ctic ▁ha ze ▁was ▁first ▁noticed ▁in ▁ 1 7 5 0 ▁when ▁the ▁Indust rial ▁Revolution ▁began . ▁Ex pl or ers ▁and ▁wh al ers ▁could ▁not ▁figure ▁out ▁where ▁the ▁fog gy ▁layer ▁was ▁coming ▁from . ▁" P oo - j ok " ▁was ▁the ▁term ▁the ▁In uit ▁used ▁for ▁it . ▁Another ▁hint ▁towards ▁clar ifying ▁this ▁issue ▁was ▁relay ed ▁in ▁notes ▁approximately ▁a ▁century ▁ago ▁by ▁Norwegian ▁expl orer ▁Frid t j of ▁N ansen . ▁After ▁tre kk ing ▁through ▁the ▁Ar ctic ▁he ▁found ▁dark ▁st ains ▁on ▁the ▁ice . ▁The ▁term ▁" Ar ctic ▁ha ze " ▁was ▁co ined ▁in ▁ 1 9 5 6 ▁by ▁J . ▁Murray ▁Mitchell , ▁a ▁US ▁Air ▁Force ▁officer ▁station ed ▁in ▁Al aska , ▁to ▁describe ▁an ▁unusual ▁reduction ▁in ▁visibility ▁observed ▁by ▁North ▁American ▁weather ▁reconna issance ▁plan es . ▁From ▁his ▁investig ations , ▁Mitchell ▁thought ▁the ▁ha ze ▁had ▁come ▁from ▁industrial ▁areas ▁in ▁Europe ▁and ▁China . ▁He ▁went ▁on ▁to ▁become ▁an ▁em inent ▁clim at ologist . ▁The ▁ha ze ▁is ▁season al , ▁reaching ▁a ▁peak ▁in ▁late ▁winter ▁and ▁spring . ▁When ▁an ▁aircraft ▁is ▁within ▁a ▁layer ▁of ▁Ar ctic ▁ha ze , ▁pil ots ▁report ▁that ▁horizontal ▁visibility ▁can ▁drop