ADDNET Notebook: Documentation of the Acid Deposition Data Network (ADDNET) Data Base Supporting the National Acid Precipitation Assessment Program

摘要

The Acid Deposition Data Network (ADDNET) project compiles extant data into a central data base for use in acidic deposition assessments and analyses. The ADDNET Data Base supports the integrated assessments conducted by Task Group I of the National Acid Precipitation Assessment Program (NAPAP). The ADDNET project includes a data coordination component, which deals with the expanding data needs of the program and with varied data sources, and a data base administration component, which creates the data base and distributes data to requesters. The ADDNET Notebook describes the contents and source of each data set. It also explains the conventions, processing, and quality assurance procedures used to create certified data sets. Examples of SAS programs for using the ADDNET Data Base are provided. The ADDNET Data Base uses the SAS computer software system for data storage, retrieval, analysis, and display. The data base is accessed by the ADDNET staff in both batch and interactive modes, using the ORNL IBM computer system; in addition, data sets can be transferred to other SAS systems. Data can also be exchanged as EBCDIC- or ASCII-formatted files. At the end of the second year of operation, the expanding ADDNET Data Base contained over 50 data sets, with over 900 variables, including deposition, emissions, air quality, water chemistry, forestry, aquatic resources, and other data required for the 1985 NAPAP Assessment. (ERA citation 12:048334)