aaBPERMAFROSTC PERMAFROSTC7 Ch Cont. (>90%) permafrost: High (>20%) ground ice Cl Cont. (>90%) permafrost: Low (<10%) ground ice Cm Cont. (>90%) permafrost: Med (10-20%) ground ice Cmh Cont. (>90%) permafrost: Med-High (>10%) ground ice Cml Cont. (>90%) permafrost: Med-Low (<20%) ground ice El Ext. discont. (50-90%) permafrost: Low(<10%) ground ice Elm Ext. discont. (50-90%) perma: Med-Low (<20%) ground ice Em Ext. discont. (50-90%) perma: Med (10-20%) ground ice Enl Ext. discont. (50-90%) perma: Low-Nil(0-10%) ground ice Il Isol. patches (0-10%) perma: Low (<10%) ground ice Ilm Isol. patches (0-10%) perma: Low-Med (<20%) ground ice In Isol. patches (0-10%) perma: Nil (0%) ground ice Inl Isol. patches (0-10%) perma: Low-Nil (0-10%) ground ice N No permafrost Sl Spor. discont. (10-50%) perma: Low (<10%) ground ice Slm Spor. discont. (10-50%) perma: Low-Med (<20%) ground ic Snl Spor. discont.(10-50%) perma: Low-Nil(0-10%) ground ice