The Korean Meteorological Administration (KMA) conducts surface weather observations and other weather-related observations by categorization, including upper-air, marine, radar, aviation, and earthquake observations. The surface weather observation network consists of 96 automated surface observing systems (ASOS) and 494 automatic weather stations (AWS). Six rawinsonde units and nine wind profilers and microwave radiometers are operating for upper-air observation. Marine weather observations consist of 17 ocean data buoys, 59 coastal wave buoys, 9 light house automatic weather stations, 14 ship weather monitoring systems, 18 coastal long wave monitoring systems, 1 wave radar, and 1 marine weather observation vessel. In addition, KMA operates 10 weather radars, 21 lightning network (LINET) sensors, 8 aerodrome meteorological observation systems (AMOS), and 156 seismometer units.