广汉机场大雾特征及对飞行活动的影响

利用广汉机场23次典型大雾资料,对其月、季、日时间特征做研究,并根据研究结论对机场航空气象服务保障进行探讨。研究结果表明:(1)广汉机场大雾冬季出现频率最高,春秋次之,而春夏交替以及夏季,则大雾出现的概率极低,20~23时是大雾的高发时次,温湿条件适宜时一般冬季出现较早;(2)大雾持续时间各不相同,一般出现时间越早,发展时间越长,消散时间越晚,持续时间越长;反之,则在上午逐渐消散;(3)气象机构应当依据大雾生消、发展规律,及时做出大雾出现及持续时间的预报,尽可能确保航空气象服务的正确性与有效性。

Based on the data of 23ty pical fogs in Guanghan a irport,the monthly,seasona l and daily time characteristics ares tudied,and the airport meteorological service s upport is discussed a ccording to the research conclusions.The results show that:(1)the highest frequency of fog is in winter,the second is in autumn,in summer and the alternate period of spring and summer,the probability of heavy fog is very low,the heavy fog is often happened during 20~23,when the temperature and humidity conditions are suitable,the fog happened in earlier time in winter;(2)the duration time of the fog is different,the earlier the fog happened,the development of the time is longer,the later the fog dissipated,the longer the fog lasted;conversely,it gradually dissipates in the morning;(3)the meteorological organization should make the prediction of the appearance and duration of the fog in a timely manner according to the law of the growth of the fog and the law of development,so as to ensure the correctness and effectiveness of the aviation meteorological service as far as possible.