【摘要】 利用2005—2015年兰州市榆中县大气能见度的观测资料,分析了影响榆中县能见度的气象因子,利用多元线性回归的方法建立榆中县能见度的预报方程,并将2016年的数据代入预报方程进行检验,最后得到2016年榆中县能见度的预报值,将2016年榆中县能见度的实测值和预报值进行对比分析。结果表明,榆中县能见度夏季和秋季相对较好,而春季由于沙尘天气的出现和比较多的大风天气对能见度的影响比较大;冬季则主要是雾、霾天气的影响和农村燃煤取暖而产生的烟雾对能见度的影响比较大。更多还原

【Abstract】 Meteorological factors affecting visibility in Yuzhong county of Lanzhou city from 2005 to 2015 were analyzed based on the observation data of atmospheric visibility. Using the method of multiple linear regression, the forecast equation of visibility in Yuzhong county was established, and the data of 2016 were substituted into the forecast equation for testing. Finally, the forecast value of visibility in Yuzhong county in 2016 was obtained, and the measured value and forecast value of visibility in Yuzhong county in 2016 were compared and analyzed. The results showed that the visibility in Yuzhong county was relatively good in summer and autumn, but in spring due to the appearance of dust weather and more windy weather had a greater impact on visibility. In winter, it was the mainly influence of fog and haze weather and the smoke generated by burning coal for heating in rural areas.更多还原