North American Acid Deposition System (ADS) and its use in spatial analysis

摘要: The Acid Deposition System (ADS) for statistical reporting of acid precipitation data has been established by the US Environmental Protection Agency. ADS base system provides an integrated centralized bank atmospheric deposition collected all monitoring networks in North America. An overview is given. underlying structure described, especially as it impacts potential uses wet data. American currently participating are identified and geographical coverage sites shown. Examples standard summaries available from Isopleth maps pH, annual hydrogen, sulfate, nitrate ammonium ion species period July 1980 to June 1981 used illustrate spatial analyses utilizing ADS. Spatial analysis based on a surface estimation procedure called kriging with resulting then contoured. 20 references, 6 figures, 2 tables.