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NARR 3-hourly data at NCAR Analysis and Flux files (aka .a and .b files) 1979 – 2003 4.2 TB

NARR Data at NCAR Status and Plans Steven J. Worley and Chi-Fan Shih Scientific Computing Division @ NCAR. NARR 3-hourly data at NCAR Analysis and Flux files (aka .a and .b files) 1979 – 2003 4.2 TB All on the NCAR MSS Available to users with NCAR computing accounts FTP and Web access

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NARR 3-hourly data at NCAR Analysis and Flux files (aka .a and .b files) 1979 – 2003 4.2 TB

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  1. NARR Data at NCARStatus and PlansSteven J. Worley and Chi-Fan ShihScientific Computing Division @ NCAR Steven Worley, NSF/NCAR/SCD

  2. NARR 3-hourly data at NCAR • Analysis and Flux files (aka .a and .b files) • 1979 – 2003 • 4.2 TB • All on the NCAR MSS • Available to users with NCAR computing accounts • FTP and Web access • http://dss.ucar.edu/pub/narr NARR Climatologies • To be transferred from UCAR/JOSS Steven Worley, NSF/NCAR/SCD

  3. Data file organization Create six product datasets • 3D • 29 pressure levels, 10 fields • 1000 » 100 hPa, wind T Q CW… • CLM, Atmosphere Column • 12 fields • precip. water, total cloud cover, …. • FLX, Diagnostic Single Level Fields • 75 fields • 10m T Q wind, total rad. flux, ….. Steven Worley, NSF/NCAR/SCD

  4. PBL, Boundary Layer • 39 fields in near surface pressure layers • U in six 30mb layers starting at the surface, …. • SFC, Surface • 43 fields • precipitations, heat and radiation flux,…. • FLX.b, Accumulated and 3 hour average fluxes • From the “b” files • 9 fields • Latent and sensible heat, short and long rad., …. Steven Worley, NSF/NCAR/SCD

  5. Samples online • One month sample online • January 1980 • Suggestion about this approach? Steven Worley, NSF/NCAR/SCD

  6. NARR Product Data Volume (based on estimates from January 1980) Steven Worley, NSF/NCAR/SCD

  7. NARR data access at NCAR Four modes of access • Directly from the NCAR MSS • Requires a computing account at NCAR • FTP or Web download product data files • Customized data packages prepared upon request • Negotiated with staff specialists and includes subsetting • By request put data on writable media (tape, disk, DVD, as appropriate) Steven Worley, NSF/NCAR/SCD

  8. NARR data user support User Support • Provide access software • Staff consultant Steven Worley, NSF/NCAR/SCD

  9. Key Related Activities • Working on Arrangements to Acquire: • NARR monthly means • NARR observational BUFR data • NARR forecasts (TBD) • 51 Year US Land Surface Hydrologic Reanalysis, Y. Fan and H.M. van den Dool • 1/8°, 1948-1998, NCEP/NCAR Reanalysis forcing and CPC precipitation Steven Worley, NSF/NCAR/SCD

  10. Objective • Make large quantities of NARR data available for research Timeline • Web and FTP service to the six products by middle February 05 • Dependent on disk hardware installation Collaboration • Not intended to duplicate service from NCDC • NOMADS is superior for multi-dimensional subsetting Steven Worley, NSF/NCAR/SCD

  11. http://dss.ucar.edu/pub/narr Questions? Email suggestion to: Chi-Fan Shih (chifan@ucar.edu) Steven Worley, NSF/NCAR/SCD

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