Observation stations within the AMDARs station network transmit their observations in the form of an AMDAR message, which prior to March 1992, was known as ASDAR (Aircraft to Satellite Data Relay). Hourly measurements are taken from aircraft across the world during all stages of flight, and the report is transmitted at 6-hourly intervals at the standard hours of observation which are: 0000, 0600, 1200, and 1800 UTC. The AMDAR message contains measurements of parameters such as aircraft characteristics, wind speed and direction, degree of turbulence, and air temperature.
|location:||GeographicBoundingBox: Longitude: -180.000 to 180.000; Latitude: 90.000 to -90.000|
|Previously used record indentifiers:||
More Information (under review)
Transmission of AMDAR messages
In order for an AMDAR message to be transmitted by an observation station, specific instruments are required to perform to certain standards. These include an anemometer, thermometer, and hygrometer. The AMDAR message is transmitted at 6-hourly intervals at the standard hours of observation which are: 0000, 0600, 1200, and 1800 UTC. Ingest scripts run at the BADC every 20 minutes, converting the incoming files to the self describing BADC-CSV format, but neither the processed or raw data are placed into archive until the following day. The relevant parameters are stored in the MetDB dataset on the BADC website.
If you have queries about these pages or about obtaining the Met Office surface stations data from the BADC then you should contact CEDA Support. Your query should be answered within one working day. When follow-up work is required, the CEDA support will carry out the work as quickly and efficiently as possible, and in any case, the user will be kept informed of progress.
|Further information on the AMDAR messages|