In winter,Shanghai has the most fog and haze days,and in summer,it has the least fog and haze days.
上海雾和霾日数以冬季最多,夏季最少。
参考来源 - 上海雾和霾日数的气候特征及变化规律·2,447,543篇论文数据，部分数据来源于NoteExpress
霾日数的变化与气温成正比，与降水量、风速呈反比。
The day number of hazes was proportional to temperature, but inversely proportional to wind speed.
在季节上，霾日数在秋、冬季达到最大，而在春、夏季较少，同时中、重度等级的霾都出现在秋、冬季。
In season, haze occurs mainly in fall and winter rather than in spring and summer. In particular, the medium degree and high degree hazes are all in fall and winter.
利用上海11个气象站点近50年的雾日和霾日统计资料，从时间和空间两方面分析了上海雾、霾日数的气候特征和变化规律。
Based on the fog and haze data from 11 meteorological stations in Shanghai, the temporal and spatial climatic characteristics and change laws of fog and haze days in recent 50 years were analyzed.
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