He, T. (2013) The Artificial Rainfall to Ease Haze in Wuhan, Contribute but Not Go on for Long Guangzhou Daily.
 Mei, P.Y. (2006) The Influence of Stable Weather Conditions on the Quality of the Environment in Tianjin. Urban Environment and Urban Ecology, 19, 37-49.
 Xu, W., Gan, Q.H. and Tang, Q. (2008) The Climate Characteristics and the Influencing Factors of Shantou Haze in 1951-2006. Meteorological and Environmental Newspapers, 24, 42-45.
 Wuhan Environmental Monitoring Center (2015) Environmental Quality Bulletin.
 (2014) China Meteorological Science Data Sharing Service Network, the Daily Data of Climate of Chinese International Exchange Station.
 Jolliffe, I.T. (2014) Principal Component Analysis.
 Mayer, J. (2005) Adaptive Random Testing by Bisection with Restriction. Springer, Berlin, 231-256.
 Liu, S.S. (2014) The Cloud Is Not Be Able to Rain. The Shijiazhuang Air Quality in the First “Severe” in June. Yanzhao Metropolis Net.