An air mass entering alaska from the northern pacific ocean would most likely be labeled on a weather map as
(1) cp (3) mp
(2) ct (4) mt

i think the air mass would be very likely to be labelled as : 2. cT cT air masses originated over mexican plateau region and desert SW. The air usually hot, dry , unstable at low levels and stable at upper levels cT and mT air will often create a boundary that is called a dryline

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