1. GTS Ingestion Simdat Meeting 05-02-08 Different types of ingestion Ingestion for replication –Essential data –Oriented replication and subscription Added services –Integration of the legacy databases –Parsing of the GTS flow Global products Geo-localisation products

2. GTS Ingestion Simdat Meeting 05-02-08 Added Services 1: Access to GTS legacy database Advantages –Not mandatory to parse and crack the GTS files –Use of the legacy databases behind the switch (outside vgisc area) oDatabase of flat files in folders mapped on the short header TTAAiiGGggg oDatabase of flat files in folders mapped on the hour or the minute Disadvantages –It’s impossible to have a dynamic metadata state (no notification) –Catalogue Synchronization and replication impossible –static representation of GTS products, no standard GTS database Existing sofware in Meteo France –Database of flat files in folders mapped on the short header TTAAiiGGggg –FTP access (Jakarta Java Classes)

3. GTS Ingestion Simdat Meeting 05-02-08 GTS Switch DR CN NWP DB GTS Database Other DB GTS Collections Metadata NWP Metadata Remote Switch Remote CN GTS Database

4. GTS Ingestion Simdat Meeting 05-02-08 Added Services 2: GTS database in the VGISC area Advantages The Data Repository owns its GTS Data Bases (Data, Metadata) Dynamic metadata state (what is present in the database) Individual messages database The real-time push harvesting of metadata is possible The GISC parser waits and stores. It works on solicitation. Disadvantages –Parsing and cracking the GTS files –Management of the Metadata -> what structure ? –Hard work with strong knowledge on GTS messages

5. GTS Ingestion Simdat Meeting 05-02-08

6. Experience: GTS anomalies Collections –Stations that do not belong to the country –A few TTAA headers not compliant with the tables (Analyses for example) –Different collections with the same header, BBB integrated (need rules to choose the good one) Individual messages –The same messages (same station, same type, same time) are different in different collections

7. GTS Ingestion Simdat Meeting 05-02-08 GTS Switch DR CN NWP DB Other DB GTS Collections Metadata NWP Metadata Remote Switch Remote CN GTS Database GTS GISC Parser GTS Messages Metadata