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Note: EPA no longer updates this information, but it may be useful as a reference or resource.

The Global Environmental Monitoring System for Air Pollution (GEMS/AIR) is an urban air pollution monitoring and assessment program. Since its beginnings in 1973, GEMS/AIR has served to strengthen the capacity of participating countries in urban air quality management by providing training, monitoring equipment, quality assurance, and technical information exchange. The program, which has been jointly operated by the World Health Organization (WHO) and the United Nations Environment Programme (UNEP) since 1975, is a component of the UN Earthwatch system.

To help with this expansion in both numbers and types of air monitors, WHO/UNEP and USEPA have developed the Twinning Program. The idea of the Twinning Project is to match developed country programs and organizations with those in developing country programs. A developed country program can provide operational equipment and technical support to aid the developing country to join the GEMS/Air, improve its existing air monitoring program, and/or expand its monitoring capability to include additional pollutants.

Files identified as "ZIP" files must be de-archived using 'PKUNZIP.' Downloading instructions, archivers, and de-archivers are available through "File Compression Utilities" under the TTN Top Menu.

From the listing below, find the file you would like to download. The available file formats are represented by icons on the right side of the listing. Click on the icon that represents the file format you wish to receive. For an explanation of file formats and their icons, see our TTNWeb File Types.

Description Date Bytes Type
Info on needs in Buenos Aires, Argentina 12-18-96 2019 text file icon
Twinning status update - July 1996 10-08-96 31232
Info on needs for cities near Lake Baikal 10-08-96 5135 text file icon
Info on Argentinian Cities Needs 09-24-96 3454 text file icon
Information on Twinning Program 08-22-96 7532 text file icon
How to become involved 07-09-96 3531 text file icon

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