The atmospheric environmental capacity coefficient cumulative frequency curve fitting and its application
XU Da-hai1, WANG Yu1, ZHU Rong2
1. State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing 100081, China; 2. National Climate Center, China Meteorological Administration, Beijing 100081, China
Abstract：Atmospheric environmental capacity coefficient is defined in this study. In addition, its characteristics as well as the type PIII fitting of the cumulative frequency curve are investigated. It has been proved that the coefficient can be served as air-self-cleaning Index. The relationship in different return periods between the air quality and the environmental capacity coefficient is studied for several special area and periods. According to the meteorological data observed in Beijing from 1951 to 2014, the average annual A-value with hundred years return period was calculated out as 4.27 and the average daily A-value with hundred days return period as 0.23 only. The research results indicate that the frequency analysis of atmospheric environmental capacity coefficient can be an important tool in the atmospheric environment management.
