Climatic factors, seasonal distribution and the indications of sea mirage were discussed, based on the 37 sea mirages that took place over 27 years on the North Sea in Penglai.

• 摘要利用1980年以来蓬莱北部海域发生的37次海市蜃楼的数据，探讨了蓬莱海市形成的气象因素、季节分布及征兆。