能见度仪观测霾的结果分析

Analysis on the Results of Haze Observation by Visibility Meter

利用攀枝花国家基本站2014年能见度仪的观测资料与近5年人工观测霾的日数进行对比,结果表明,用能见度仪取代人工观测能见度后,霾的出现日数显著增加;在24 h变压为负时,较容易形成霾;在出现霾后,能见度变化不明显,霾持续时间较长。在使用能见度仪后能消除人为误差,真实反映当时大气状况,满足业务要求。

The observation data by visibility meter in 2014 in national basic station in Panzhihua was compared with artificial observation haze days in recent 5 years.The analysis showed that,replace the manual observation visibility with visibility sensor,the haze days increased significantly.When △P24 ＜0,it was easier to form haze.After the haze apperance,the visibility did not change significantly and continued for a long time.It can eliminate the human error,really reflect the atmospheric conditions,and meet the business requirements.