Update #5: A friendly reminder that the legacy AutoSnow products will be turned off on PDA at approximately 2:00 pm EDT (1800 UTC) today.

Update #4: A friendly reminder that the legacy AutoSnow products will be turned off on PDA on August 1, 2023, as planned.

Update #3: The AutoSnow patch for handling the super longer AMSR2 BT orbital files has been promoted to NCCF PROD on March 27, 2023. AutoSnow product status will be upgraded to provisional starting March 28, 2023.

Update #2: AutoSnow products will be promoted to the operational environment in NCCF on February 22, 2023. The AutoSnow netCDF and GRIB2 products will be released in Beta mode due to a known issue with abnormal input data after this promotion. An ESPC update notice will be provided when the AutoSnow products are upgraded to provisional.

Update #1: The short names of the daily snow and ice products now available on PDA I&T are listed in the table below.

Topic: Operational Implementation of the AutoSnow Daily Snow and Ice products in NCCF (NESDIS Common Cloud Framework)

Date/Time Issued: August 1, 2023 1745 UTC

Product(s) or Data Impacted: AutoSnow GMASI Daily Snow and Ice Products

Date/Time of Initial Impact: February 22, 2023 TBD

Date/Time of Expected End: February 22, 2023 TBD

Length of Event: TBD

Details/Specifics of Change:

ESPC has implemented the upgraded Global Multisensor Snow and Ice Mapping System (GMASI-Autosnow) in the User Acceptance Testing (UAT) environment in the NCCF. The daily snow and ice products are now available on PDA I&T and the short names are provided below. ESPC plans to transition the AutoSnow product generation into the NCCF operational production (PROD) environment on February 22, 2023. The AutoSnow GMASI product files in NetCDF and GRIB2 will be distributed on the PDA starting on February 22, 2023.

ESPC will retire the legacy AutoSnow products in approximately three months after the upgraded AutoSnow system is declared operational in NCCF. Users should begin making the necessary updates to their processing/operations on February 22, 2023. Please let us know if you have any questions or concerns.

New AutoSnow products:

PDA Short Name	File Naming Convention	Product Description
GMASI_BLEND_SNOW-ICE	GMASI-Snowice-2km_v\dr\d_blend_s\d{15}_e\d{15}_c\d{15}\.nc	Global daily snow and ice maps at 2km in NetCDF4
GMASI_BLEND_ICE_NH_GRIB	GMASI-Ice-NH2km_v\dr\d_blend_s\d{15}_e\d{15}_c\d{15}\.grib2	N. Hemisphere daily ice map at 2km in GRIB2
GMASI_BLEND_ICE_SH_GRIB	GMASI-Ice-SH2km_v\dr\d_blend_s\d{15}_e\d{15}_c\d{15}\.grib2	S. Hemisphere daily ice map at 2km in GRIB2
GMASI_BLEND_SNOW_NH_GRIB	GMASI-Snow-NH2km_v\dr\d_blend_s\d{15}_e\d{15}_c\d{15}\.grib2	N. Hemisphere daily snow map at 2km in GRIB2
GMASI_BLEND_SNOW_SH_GRIB	GMASI-Snow-SH2km_v\dr\d_blend_s\d{15}_e\d{15}_c\d{15}\.grib2	S. Hemisphere daily snow map at 2km in GRIB2

Legacy AutoSnow products: (to be retired in May-Jun 2023)

PDA Short Name	File Naming Convention	Product Description
ASI-NH-End_Product_autosnow	NH4km_autosnow_\d{8}\.grb	N. Hemisphere daily snow map at 4km in GRIB2
ASI-NH-End_Product_autoice	NH4km_autoice_\d{8}\.grb	N. Hemisphere daily ice map at 4km in GRIB2
ASI-SH_2km-End_Product_autosnow	SH2km_autosnow_\d{8}\.grb	S. Hemisphere daily snow map at 2km in GRIB2
ASI-SH_2km-End_Product_autoice	SH2km_autoice_\d{8}\.grb	S. Hemisphere daily ice map at 2km in GRIB2
ASI-SH_4km-End_Product_autosnow	SH4km_autosnow_\d{8}\.grb	S. Hemisphere daily snow map at 4km in GRIB2
ASI-SH_4km-End_Product_autoice	SH4km_autoice_\d{8}\.grb	S. Hemisphere daily ice map at 4km in GRIB2
GMASI-NH-End_Product_SIM_bin	NH.C17_\d{7}_BLND_SIM	N. Hemisphere daily snow and ice maps at 4km (binary)
GMASI-SH-End_Product_SIM_bin	SH.4\d{5}SIM	S. Hemisphere daily snow and ice maps at 4km (binary)
GMASI-NH-End_Product_DAY_bin	NH.C17_\d{7}_BLND_DAY	Number of days since the state of the grid cell was last update (binary)
SH_2km_Multisensor	sh_2km_multisensor_snow_ice_map_\d{7}	S. Hemisphere daily snow and ice maps at 2km (binary)

Please note: This promotion might not be performed during Critical Weather Day (CWD). Also, the products of this promotion are subject to change based on user readiness, customer feedback, and management approval.

Additional ESPC notifications will provide further details and updates concerning this promotion. User feedback and questions should be directed to Aiwu Li Aiwu.Li@noaa.gov

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

Contact Information: For information please contact Aiwu Li at aiwu.li@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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