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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
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- Unidata IDD Data System + (The Unidata IDD has been in operation on a … The Unidata IDD has been in operation on a 24x7 basis since 1995 when it replaced a real-time data delivery system that had been used a sideband on satellite TV broadcasts that were decoded by special receivers connectd to C-band receivers at user sites. The switch to IDD did away with the subscription fee which made it possible for many more sites to receive a greatly expanded menu data streams. In the last few years, the reach of the IDD has been expanded internationally and it is now being used to ship real time data in all directions among Central and South America, Europe, and a few sites in the Far East. The underlying LDM technology has been adopted by a number of different organizations to collect and disseminate their own data. Among them are the US National Weather Service which has established a collection system for the level II and level III radar data from all the NEXRAD sites. This replace the old tape-based system, greatly reducing the cost while dramatically increasing the reliability and cutting the collection time at NCDC to virtually zero. Using Unidata LDM technology , the Spanish and South Korean Weather Services have established their own internal IDD systems for internal data distribution. The THORPEX TIGGE groups are using this technology to move data among archive centers in China, Europe, and the US. The TIGGE ensemble forecasts amount to about 20 GB per hour moving on a regular basis among these centers.ng on a regular basis among these centers.)
