fog days
The annual average of fog days at the three stations are 24.7 d,30.4 d and 21.0 d,respectively.
三站的年平均雾日数分别为24.7d、30.4d和21.0d。
·2,447,543篇论文数据，部分数据来源于NoteExpress
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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