Topic: NDE System Upgrade 

Date/Time Issued: June 21, 2022 1845 UTC

Product(s) or Data Impacted:  All NDE products

Date/Time of Initial Impact: July 21, 2022 TBD UTC

Date/Time of Expected End: July 21, 2022 TBD UTC

Length of Outage: 2.5 hours 

Details/Specifics of Change:

The July 21, 2022 installation of NDE release 2.0.32 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/Updated products included in this release are:

VIIRS Flood Mapping (details will be included in a separate release notice)

Impact on users: New Products

VIIRS Flood Mapping (VFM) products will be available on PDA and short names and file names are listed below.

Operational Updates of S-NPP and NOAA20 MIRS v11.8 on NDE

Impact on users: Yes

File names have changed to: 

List of Scientific Changes:

1) Added J02 (NOAA-21) processing capability.

2) Updates to the snowfall rate (SFR) algorithm software including 

• final version is ready for J02 processing 

• machine learning based snowfall detection algorithms for SNPP and NOAA-20 

• new radiometric bias corrections for SNPP and NOAA-20

• cloud temperature initialization for SNPP and NOAA-20

• machine learning based ice water path initialization for SNPP and NOAA-20 over CONUS

• machine learning based SFR bias correction for SNPP and NOAA-20 over CONUS

3) Integration of an additional option for the radiometric bias correction for S-NPP and NOAA-20. The new option is a dynamic bias correction which uses a machine learning approach to compute a unique bias correction for each individual scene based on its radiometric and geophysical characteristics. The default option remains as before, the use of a static bias correction. Selection of the bias correction option is determined in the static tuning files located under data/StaticData/TuningData. Separate tuning files with flags set to use the machine learning correction are contained in the package and can be used by simply modifying the PCF to point to these files. (Note: prior to recommending this option for operations, the science team will brief stakeholders at a future date on comparative results to make sure there is consensus on switching to the new option).

4) Added one new parameter ‘char quality_information’

5) Added one new attribute ‘ascend_descend_data_flag ’ in the global metadata

6) Made the global attributes better compliance with NDE guidelines and CF conventions

Operational Update of S-NPP and NOAA20 OMPS V8TOS/TOZ/LP on NDE:

Impact on users: Yes

File names have changed to: 

List of Scientific Changes:

OMPS V8TOZ 

1) Added process of medium/high resolution OMPS J02 At present, the LUTs for J02 are the same as J01 which will be updated when real OMPS J02 SDR data are available. The soft-calibrations for J02 are set to zero for future updating.

2) The retrieval algorithm is switched from using narrow bandpass (original) radiance/irradiance to using broader bandpass for the six longest channel wavelengths, and the LUTs for both SNPP and N20 are updated in accordance with this bandpass switch.

3) New radiance adjustments (soft-calibration) are applied to both OMPS NPP and N20 retrievals, which make retrieved ozone and aerosol index agree with each other between NPP and N20, and be consistent with retrievals from previous versions.

4) Source code "O3T_omps.f90" was modified to solve the dimension issue when SDR data switched from Mx3 to Mx4. With the updated file the OMPS V8TOz_v4r2 will be able to process OMPS S-NPP, N20 and J02 for both Mx3 and Mx4 data, and generate EDR products with corresponding dimensions as inputted SDR data.

5) The creation date of soft-calibration and look-up tables was added to the table filename as timestamp of "yyyymmdd", and those filenames plus  granule SDR filenames were put in the metadata "source" of EDR output file. Those detailed information would be helpful when making comparisons and quick check of the products from different platforms.

6) Added parameter "pressure" in the product outputs.

7) Added 4 corners geo-location information (LatitudeCorners/LongitudeCorners) in the product outputs.

OMPS V8TOS EDR

This delivery uses the V8TOz with 5-nm channels for the longer wavelengths, and can take the 30/177 FOV J02 granules.

OMPS LP EDR

This delivery updates some of the climatological tables used in the retrieval algorithm and sets the processing to all three slits instead of just the middle one.

OMPS V8TOZ BUFR

The Eclipse Flag screening for OMPS V8TOZ was implemented in BUFR.

OMPS LP BUFR

No changes

Algorithm recompilation on RHEL 7:

VIIRS Active Fire M band

GCOM RDR to ASD Converter

Impact on users: NO

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 shuang.qiu@noaa.gov

Contact Information: For information on the status of this work, please contact Shuang Qiu shuang.qiu@noaa.gov or ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

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

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