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S2S database progress at CMA

Learn about the progress, disadvantages, and future plans of the S2S database at China Meteorological Administration. Discover how to access and download data, and explore suggestions for improvement.

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S2S database progress at CMA

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  1. S2SSGMeeting S2S databaseprogress at CMA China Meteorological Administration Hu Xing huxing@cma.gov.cn

  2. S2S databaseprogress at CMA Contents • Progress • Disadvantage • Future plan

  3. Progress • Background • Since 2015, CMA has established cooperation with ECMWF • CMA provides ECMWF with real-time prediction results of BCC model in S2S time-scale • CMA receives S2S data from 10 others product center, except CMA, from ECMWF • CMA check data format, processing, archive , management, and establish a portal for global service

  4. Progress • The amount of data • The amount of data is about 75TB, and the data storage method is NAS online. • Storage based on the CMA’s Cloud platform • Easy to dynamically expand

  5. Progress http://s2s.cma.cn CMA S2S database service portal launched on Nov. 16, 2015.

  6. Progress • S2S data view (Provide simple data visualization display)

  7. Progress • Method 1: Batch download • Step 1. Choose center, parameter, realtime forecasts or hindcasts, then click “submit”; • Step 2. In file list page, click “Batch Download ” to get a batch list file. • Step 3. Download tools can bulk download data files in the list.

  8. Progress • Method 2: Wget • Step 1. After the choose page, click “wget” , the files extension name could be changed to cmd or shfor windows or linux OS system. • Step 2. For windows, you need to install wget software. Then run it.

  9. Progress • Method 3: OPeNDAP • Step 1. After the choose page, click “Build order” , OPeNDAP is on the right. • Step 2. Click the button,and choose access OPeNDAP to view and fetch data.

  10. Progress • Data service statistics Visited increased(ten thousands) Registered user distribution Data download（TB） download top five centers ECMWF, CMA,BOM,UKMO, NCEP download top five parameters t, u,v, mx2t6, gh

  11. Contents • Progress • Disadvantage • Future plan

  12. Disadvantage • Data integrity and consistency is inadequate • CMA Archive Center encounters S2S data missing problems . • Integrity: some historical data is missing, CMA did not receive the original data. • Consistency : Some historical data has changed, no update method. • Suggestion • Establish a missing data supplement process. • For bulk data transfer, Offline Copy may be more efficient.

  13. Contents • Progress • Disadvantage • Future Plan

  14. Future Plan • Suggestion • For seamless assemble forecast, SG could consider joint S2S/TIGGE data transfer and archiving. • Increase TIGGE transmission and backupbetween ECMWF and CMA.

  15. S2SSGMeeting Thank You! http://s2s.cma.cn

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