The Korean Meteorological Administration (KMA) Testbed features embedded domains with10-km and 3.3-km horizontal resolutions. The major focus of the DATC work is to test the capabilities of the KMA WRF-ARW and WRF-Var system in extended runs, investigate high-impact weather DA (e.g., radar DA), and conduct DA configuration tuning (resolution, cycling vs cold-start mode of the system).