CIESIN Thematic Guides

International Directory Network

The International Directory Network (IDN) provides access to the Global Change Master Directory through three coordinating nodes--the National Aeronautics and Space Administration (NASA), the European Space Agency (ESA), and the Japanese Space Agency (NASDA)--each of which has cooperating nodes affiliated with it. NASA's Master Directory User's Guide (1993) provides information about the IDN, access procedures, and the contact for additional information. More recent information on the IDN can be found within the European Space Agency (ESA) Earth Observation Guide and Directory Service.