WIGOS Station Identifiers

WIGOS Station Identifier (WSI) is used to register an observing station or platform in the OSCAR/Surface database. In this way WMO Members can record WIGOS metadata from all observing stations/platforms in OSCAR/Surface.

Previously, observing stations were registered using WMO Identifiers, which had the form of 5-digit numbers for synoptic and climate stations. Many countries ran out of numbers within their allowable ranges and were unable to register additional stations. The new WIGOS Station Identifiers were created with a structure of 4 blocks, using digits and alphanumeric characters that allow essentially an unlimited number of stations to be registered.

WSI table

The implementation of WSIs is mandatory for WMO Members and it is a critical step towards becoming WIGOS operational.

Related links

Regulatory and Guidance material:

Relevant presentations:

Preparatory documents: