This document discusses wind erosion processes in deserts and adjacent semi-arid regions. It describes how wind deflates and removes loose material, forming depressions called blowouts. Wind abrasion impacts surfaces with wind-blown particles. Suspended loads from dust storms can deposit as loess. Bed loads of bouncing sand grains build migrating dunes with gentle windward slopes and steep leeward slipfaces that shift downwind. Dune types include barchans, transverse, longitudinal, and complex shapes. Desert landscapes evolve from alluvial fans and playas in basins surrounded by eroding mountains that form inselbergs and pediments. Inactive coastal dunes are parabolic or foredunes.