Analysis on the Results of Haze Observation by Visibility Meter

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.