青岛近海海雾多发生在4—7月份,是沿海灾害性天气之一。它对渔业生产、航海运输和国防建设影响很大。因此作好4—7月份海雾的长期预报有十分重要的意义。由于海雾的多寡和前期因子之间是一种模糊关系,因此,本文采用模糊集理论中的隶属函数和贴近度试作青岛近海海雾的长期预报。首先,对已选好的4个预报因子分别建立对4—7 Qingdao near the sea fog occurred in April-July, one of the coastal disastrous weather. It has a great impact on fishery production, maritime transport and national defense construction. Therefore, making good long-term forecast of sea fog in April-July is of great significance. Due to the fuzzy relationship between the amount of sea fog and the previous factors, this paper uses the membership function and the close degree of fuzzy set theory to test the long-term forecast of Qingdao offshore sea fog. First of all, a good selection of the four predictors were established on 4-7