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It is well known that the information about the vertical profile of the atmosphere is essential for understanding atmospheric conditions and accurate weather forecasting. Rawinsonde observations are conducted at 0-35 km observation heights at five sites (Pohang, Gosan, Sokcho, Baengnyeongdo, and Heuksando) concerning pressure, geopotential height, temperature, dew point temperature, wind direction, and wind speed twice a day (0000 UTC, 12 00 UTC) under regular weather conditions and four times a day(0000 UTC, 0600 UTC, 1200 UTC, 1800 UTC) under severe weather conditions.

Moreover, the wind profilers are installed to observe the upper-air spatiotemporally at more detailed intervals since 2002. Those equipments are installed and operated at Munsan, Gangneung, Gunsan, Masan, and Haenam with 70m - 5km observation heights concerning wind direction, wind speed, signal to noise ratio, and spectral width at 10-minute intervals. These observation data are utilized for the analysis of rainfall types, the identification of weather fronts, and input data for numerical prediction models.