摘要
利用新疆蔡家湖气象站1971-2010年大雾天气现象观测资料，分析了该地区近40a大雾天气的年际、年代际、日变化特征以及大雾天气的持续时间特征。研究表明：蔡家湖近40a大雾的年日数年际变化不明显；秋季雾日增多趋势明显，春季和冬季雾日呈减少的趋势；大雾主要出现在冬季，其次为秋季；一日中大雾主要发生在02-08时，其次为8-14时；大雾持续时间大多在3h之内；40a雾的最长持续时间为46．88h，出现在2010年11月；各月平均最长持续时间为14．49h，也出现在11月；最长持续时间季节分布呈秋末和冬季较长，夏季较短；大多月份雾的最长持续时间呈增长的趋势；当出现2d及以上的高湿天气，且日平均气温在一7．O～O℃、日最高气温在一6．0～0℃时，有利于雾的持续。
Using the observation data of fogs from 1971 to 2010 from Caijiahu weather station with statistical method to analyze the interannual, decadal, monthly, and daily variation and duration characteristics of the fog weather in this area in recent 40 years. The Result shows as fowllows. The interannual variation of the yearly number of heavy fog days are not obvious. The heavy fogs occurred mainly in the winter, the second often in the fall, and the fog days concentrated mainly in the 02:00-08:00, followed by 8:00-14:00. The fog duration mainly concentrated within 3 hours, and the longest fog duration among 40 years is 46.88 hours which happened in November, 2011.The longest average monthly fog duration is 14.49 hours which also occurred in November. The distribution of the longest fog duration is long in late autumn and winter, short in summer. The fog duration for most months shows an increasing trend. It is easy for fog to persist when there are more than 2 days of high damp weather. Meanwhile the daily average temperature is within-7.0~0℃ and the daily maximum temperature is within-6.0~0 ℃.
出处
《沙漠与绿洲气象》
2014年第4期54-60,共7页
Desert and Oasis Meteorology
基金
中国沙漠气象科学研究基金(sqj2013016)
新疆昌吉州气象局科研项目<古尔班通古特沙漠南缘阴雾天气的特征分析>
关键词
蔡家湖
大雾
变化特征
持续时间
Caijiahu
dense fog
variation characteristic
duration
作者简介
夏玉莲（1972-），女，工程师，现从事大气探测和短期气候预测工作。E-mail：1450646828@qq．com
