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[nws-changes] 20091114: NCEP update and NOMADS

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                       November 24, 2009


MEMORANDUM FOR:  Distribution E

FROM:            Allan Darling
Deputy Director, NCEP Central Operations (NCO) 
SUBJECT:         Scheduled Operational Changes and Upgrades
The following information is being shared to clarify questions regarding the NOMADS systems. NOAA operates three types of NOMADS Servers that host NCEP Model Products: A real-time server supported 24x7 by NCEP is available at http://nomads.ncep.noaa.gov/. This server provides: 
    - access to NCEP's operational data sets as they are being generated
    - a short-term archive of up to a month for most data sets
    - 24x7 operational monitoring by NCEP staff
- a geographically-diverse backup server to insure operational availability
A near-real-time server supported by NCDC is available at http://nomads.ncdc.noaa.gov/. This server provides 
    - access to a subset of NCEP's operational data set (as distributed on
         NOAAPort) shortly after distribution
    - a long-term archive for all data sets
    - many other data sets (see
        http://nomads.ncdc.noaa.gov/data.php?name=inventory)
Four non-operational research and development servers used for customer testing of new products and services prior to operational implementation 
    - These servers are not guaranteed to have current data
    - These servers are not guaranteed to be available at all times
- These servers and their content are supported only during business hours 
         and on the basis of staff availability
- Three non-operational research and development servers managed by NCEP 
         are available at
              http://nomad1.ncep.noaa.gov/ncep_data/index.html
              http://nomad3.ncep.noaa.gov/ncep_data/index.html
              http://nomad5.ncep.noaa.gov/ncep_data/index.html
A non-operational research and development server managed by NCDC is available at http://nomads6.ncdc.noaa.gov/ncep_data/index.html 

          ______________________________________________
---- OPERATIONAL ANNOUNCEMENTS ----
1. Upcoming major changes to NCEP's production suite and details on any product or timing changes associated with upcoming implementations can be viewed at the following website: 

http://www.nco.ncep.noaa.gov/pmb/changes/
Test data for each of these proposed changes should be available six weeks prior to implementation. Anyone wishing to receive formal notice of the final pre-implementation testing and the opportunity to provide feedback on the proposed changes can subscribe to the Model Evaluation mailing list via: 

https://lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.modelevalinfo
2. Maintenance of subscriptions to the Scheduled Operational Changes and Upgrades mailing list can be performed via the following website:
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