Identification of solar halo terms in observations recorded in historical Korean documents

We investigate solar halo terms in observations recorded in the Crown Prince Sohyeon's Donggung-Ilgi (Seventeenth century) and identify their equivalent terminologies in modern atmospheric optics. We refer to related historical Korean and Chinese materials (e.g. Pungun-Gi, Observation Log for Wind and Clouds, for 6 December 1748), analyse the distributions of each term according to the sun elevation and consult modern studies on halo simulations. Then, we compare our findings with the results of previous works. This study will contribute to the understanding of halo events recorded in historical East Asian documents.