Public Information Statement
Issued by NWS National HQ
Issued by NWS National HQ
304 NOUS41 KWBC 281650 PNSWSH Service Change Notice 24-60 National Weather Service Headquarters Silver Spring MD 1250 PM EDT Tue May 28 2024 To: Subscribers: -NOAA Weather Wire Service -Emergency Managers Weather Information Network -NOAAPort Other NWS Partners, Users and Employees From: Ben Kyger Director NCEP Central Operations Subject: New Data Available Publicly on NCEP Web Services; GFS, GDAS, and RAP BUFR Observations and US Navy HYCOM: Effective May 22, 2024 Effective on May 22nd, 2024 the National Weather Service added data products to their NCEP Web Services which include (1) an upgrade to the Observation Processing (ObsProc) software package to include high resolution (temporally and spatially) satellite wind observations and Binary Universal Form for the Representation (BUFR) formatted high resolution upper air radiosonde profiles, (2) removal of 0-byte sevcsr files and (3) add the US Navy Hybrid Coordinate Ocean Model (HYCOM) products. 1) ObsProc v1.2 additions Data will be available under the corresponding model subdirectory: https://nomads.ncep.noaa.gov/pub/data/nccf/com/obsproc/prod/ https://ftpprd.ncep.noaa.gov/data/nccf/com/obsproc/prod/ ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/obsproc/prod/ a) The new observations and corresponding BUFR dump files generated: - GFS and GDAS *satwhr*.bufr_d It includes: i) High temporal resolution (15-20 min) National Environmental Satellite, Data, and Information Service (NESDIS) generated satellite Atmospheric Motion Vectors (AMVs) over CONUS ii) Hurricane tailored high spatial and temporal resolution satellite AMVs over the domain of Tropical cyclones activity (a seasonal product) - GFS, GDAS, and RAP *uprair*.bufr_d BUFR formatted high resolution upper air radiosonde profiles - GFS gfs.tCCz.TYPE.tm00.bufr_d Where TYPE is BUFR formatted files *ahicsr*, *crisf4*, *crsfdb*, *gsrasr*, *gsrcsr*, *omi*, *ompslp*, *ompsn8*, *ompst8*, *satwhr*, *sevasr*, *uprair* - GDAS gdas.tCCz.TYPE.tm00.bufr_d Where TYPE is BUFR formatted files *ahicsr*, *avcsam*, *avcspm*, *crsfdb*, *gsrasr*, *gsrcsr*, *omi*, *ompslp*, *ompsn8*, *ompst8*, *satwhr*, *sevasr*, *uprair* - RAP rap.tCCz.TYPE.tm00.bufr_d Where TYPE is BUFR formatted files *gsrasr*, *gsrcsr*, and *uprair* b) Updated contents in prepbufr files for: - GFS, GDAS and RAP *prepbufr*.nr The *uprair* observations will be added to the prepbufrs Automated Data Processing Upper Air (ADPUPA) component. All of the above new and updated BUFR dump files will be generated at the temporal frequency of the existing observational products. (CC is the analysis time) NCEP encourages users to ensure their processing is flexible to adequately handle the new data, as well as increased file sizes for prepbufr datafiles. Even though content within the files has changed, downstream file readers should not need to change in response. 2) Removal of GFS and GDAS *sevcsr* buffer files The following zero (0) bytes files will no longer be sent to their corresponding ObsProc directories: gfs.tCCz.sevcsr.tm00.bufr_d gdas.tCCz.sevcsr.tm00.bufr_d Where CC is 00, 06, 12, 18 3) Navy HYbrid Coordinate Ocean Model (HYCOM) Data will be available here: https://nomads.ncep.noaa.gov/pub/data/nccf/com/navo/prod/ https://ftpprd.ncep.noaa.gov/data/nccf/com/navo/prod/ ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/navo/prod/ hycom_glb_regp01_YYYYMMDD00_tfff.nc.gz hycom_glb_regp06_YYYYMMDD00_tfff.nc.gz hycom_glb_regp07_YYYYMMDD00_tfff.nc.gz hycom_glb_regp17_YYYYMMDD00_tfff.nc.gz hycom_glb_sfc_u_YYYYMMDD00_tfff.nc.gz Where YYYYMMDD is the forecast date and fff is the forecasted hour. Any questions, comments, or requests regarding this implementation should be directed to the contacts below. We will review any feedback and decide whether to proceed. For any comments/feedback on the BUFR dump file upgrade at the Environmental Modeling Center (EMC), please contact: Dr. Daryl Kleist Chief, Data Assimilation and Quality Control Group NCEP Environmental Modeling Center College Park, MD Email: daryl.kleist@noaa.gov or obsproc_support@noaa.gov For questions regarding the data flow aspects, please contact: Margaret Curtis NCEP Central Operations Dataflow Team ncep.pmb.dataflow@noaa.gov National Service Change Notices are online at: https://www.weather.gov/notification