Topic: NDE System Upgrade 

Date/Time Issued: October 29, 2021 1905 UTC

Product(s) or Data Impacted:  All NDE products

Date/Time of Initial Impact: November 30, 2021 TBD UTC

Date/Time of Expected End: November 30, 2021 TBD UTC

Length of Outage: 2.5 hours 

Details/Specifics of Change:

The November 30, 2021 installation of NDE release 2.0.28 is planned to occur during back orbits. NDE will not be ingesting, processing or distributing data during installation. No data loss is expected, but there will be a possible backlog of processing when installation is complete.

New product included in this release is:

Multiplatform Tropical Cyclone Surface Winds Analysis (MTCSWA) in NDE

The MTCSWA will be upgraded with:

      1. Add scatterometer data from MetOp-B

      2. Add NPP/ATMS nonlinear balance winds

      3. Update inner core GOES winds using GOES-16/17 and Himawari-8 inputs

      4. Modify surface wind reduction rules to be consistent w/NHC’s rules

      5. Produce output in NetCDF

      6. Full resolution G16/17 and H8 data

The MTCSWA FIX product shortname and file name will be changed:



Product File Name

Current MTCSWA






MTCSWA will also generate a netcdf product:

Product PDA Short Name

Product File Name (NetCDF4)



MTCSWA 2-D wind products


Updated product included in this release is:

Metadata update in NDE Blended-Hydro Products:

NDE Blended Hydro product metadata will have the following updates:

  1. attribute "Metadata_Link" will be changed to "metadata_link" and the value

of the attribute "metadata_link" will be product file name. Sample:

               Metadata_Link =


  1. Blended Hydro netcdf outputs will be compressed

   (global 'attribute nc4_compression_flag' will be ‘on’)

  1. add two new variables: 'quality_flag' and 'quality_information'

  2. add variable attributes 'flag_values' and 'flag_meanings' to the variable 'Satellite_Number'

  3. add a new global attribute 'projection'


Reduced latency, updates to the metadata.

New filename with updated version number:

Please note: This upgrade will not be performed during Critical Weather Day (CWD).

Also, the contents of this release are subject to change based on user readiness, customer feedback, and management approval.

Additional ESPC notifications will provide further details and updates concerning this release.  User feedback and questions should be directed to Shuang Qiu

 Contact Information: For information on the status of this work, please contact Shuang Qiu or ESPC Operations at or 301-817-3880

 Web Site(s) for applicable information: N/A

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