Exploration Model of Relations between the PM2.5 of the Air and Other Monitoring Indexes Based on VAR

摘要

PM 2.5, as an important index about air pollution, whose form and composition is very complicated, has a negative influence on humankind. The paper, according to the meteorological data from Wu Han environmental air automatic monitoring station, conducts an quantitative analysis of independence and the 6 standards of AQI, based on VAR and Granger causality test, draws a conclusion that inhalable particles and ozone is not the source of the increase of PM 2.5. Finally. The paper establishes VCR model between PM 2.5 and CO, SO_2, NO_2 introduces the impulse response function, explores a random perturbation of a standard deviation shock effects on different indicators for monitoring.