Abstract
An extratropical cyclone, which was located to the west of the Korea Peninsula on February 10, 1962, developed during its passage over the Japan Sea on 11th and a cold-air outbreak took place on February 12. A synoptic analysis on the cloud distribution and features over the Japan Sea and its neighbourhood during the three days mentioned above is made by using both radiation and photographic observation data of TIROS IV. The heat and water budget over the Japan Sea are also discussed with reference to the cloud aspects; and the excess temperature and water in convective upward motion are estimated.
