Topic: NDE System Upgrade 

Date/Time Issued: January 25, 2022 2040 UTC

Product(s) or Data Impacted:  All NDE products

Date/Time of Initial Impact: March 3, 2022 TBD UTC

Date/Time of Expected End: March 3, 2022 TBD UTC

Length of Outage: 2.5 hours 

Details/Specifics of Change:

The March 3, 2022 installation of NDE release 2.0.30 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:

Advanced Dvorak Technique (ADTv9.0)

Impact on users: YES

The ADT will be upgraded with:

      1. Incorporates new version of ARCHER (automated, multi-satellite-based

          objective TC center fix algorithm)

      2. Capability to process full resolution Himawari-8 and GOES-R (G16 and G17) data 

      3. Improved analysis of Sub-Tropical (ST) designated cyclones

      4. Improved analysis of Extratropical Transition (ET) events

      5. Include estimates of TC surface wind radii (34/50/64 knot wind radii, in nmi.)

      6. Implement ADTv9.0 on NDE

      7. ADTv9.0 will only generate products by ATCF bulletins.

      8. ADTv9.0 will not include DMSP satellites.

The ADT FIX product shortname will be changed:



Product File Name (no change)

Current ADT(v8.2.1)



New ADT(v9.0)



On ADT product webpage, since ADTv9.0 will only generate products by ATCF bulletins, ADT products under the following Forecasts Centers will be removed: New Delhi, Tokyo, La Reunion, Australia, and Nadi.

ADTv8.2.1 will be turned off on April 3rd, 2022. 

Operational Update of the S-NPP and NOAA20  VIIRS ACSPO SST on NDE:

Impact on users: YES

We will update S-NPP and NOAA20  VIIRS ACSPO SST Products with ACSPO v2.8. Upgrades in ACSPO v2.80 from STAR include (1) ACSPO thermal fronts (for both LEO, GEO and super-collated L3S); (2) reduced high-latitude biases; (3) reduced L2P file size by a factor of ~3 (as brightness temperatures are no longer included); (4) improved cloud screening; 5) added support of J2/N21 and Meteosat Third Generation platforms. Product generation will remain on the NDE (on-prem NDE) and product distribution will remain on the PDA. The VIIRS v2.8 ACSPO SSTs will be available for testing on the NDE I&T and PDA I&T test environments for existing I&T user groups from January 31 - March 2nd.  If you are not an I&T user, contact the PAL ( for additional help with sample V2.8 granules.  We plan to replace the ACSPO v2.61 VIIRS ACSPO SST products on the PDA with the  ACSPO v2.8  VIIRS ACSPO SST products by March 3rd. PDA short names are listed in the Table below.

Please make the required updates to your processing/operations by March 2, 2022. Let us know if you have any questions.


NEW VIIRS ACSPO 2.8 SST PDA Filename Sample

Current Operation NDE VIIRS ACSPO v2.61 SST PDA Short Name

Current Operation NDE VIIRS ACSPO v2.61 SST Filename Sample







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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