National Oceanic and Atmospheric Administration, United States Department of Commerce

  • Attention JPSS Users! (10/2/2024):

    Geolocation for the S-NPP spacecraft entered a degraded state starting with the observation time of 2244 UTC on September 24, 2024. Operations was able to recover the S-NPP spacecraft to a valid geolocation state at 1634 UTC on September 27, 2024. Cal/Val teams have confirmed that all S-NPP Science products are meeting mission specifications and ready for operational use.

    All S-NPP Science products were enabled on PDA OPS after 1930 UTC on September 30, 2024 and are being ingested by CLASS.

    Please click here for details of the event.

  • Attention DMSP Users! (09/23/2024):

    FNMOC has been sending all DMSP EDR, SDR, and TDR products since late 9/18/24 to ESPC and PDA is distributing. TDUP products started flowing 9/23/24. The data from the outage 9/11/24 to 9/18/24 is considered lost.

    You may request to be added to the ESPC notification email list to receive satellite updates by contacting ESPCOperations@noaa.gov

  • Attention JPSS Users! (08/7/2024):
    • Starting on July 24 at ~0630 UTC, Stored Mission Data (SMD) ceased to be received from the S-NPP satellite
    • S-NPP products began to be restored to operational status on July 25, 2024 continuing through August 2, 2024
    • Products are available in CLASS for the date July 30, 2024 ~2015 UTC observation time except OMPS which is available for the date August 8, 2024 ~1913 UTC .
    • The S-NPP data from July 24, 2024 ~0630 UTC - July 29, 2024 UTC will not be recoverable.
    • Please see ESPC Notification for details
    • You may request to be added to the ESPC notification email list to receive satellite updates by contacting ESPCOperations@noaa.gov

  • Attention JPSS Users! (07/19/2024):

    Satellite Operations was able to recover the S-NPP spacecraft to a valid GPS timing and geolocation state and S-NPP Science products have been enabled per Cal/Val teams. Products are available in CLASS as of July 18, 2024 ~1630 UTC observation time.

    The S-NPP data from 7/9/24-7/18/24 16:30 UTC will not be recoverable.

    Please click here for the details of the event.

    If you have any questions or need assistance please submit an email to CLASS Help Desk.

  • Attention JPSS Users! (07/09/2024):
    • Starting in January 27, 2025, for all JPSS satellites (S-NPP, NOAA-20, and NOAA-21), the VIIRS SDR data will be associated with and delivered with the VIIRS Terrain-Corrected Geolocation instead of the VIIRS Ellipsoid Geolocation.
    • Updated ESPC Notice: https://www.ospo.noaa.gov/data/messages/2024/05/MSG_20240524_1600.html
    • Historical VIIRS SDRs will continue to be associated with and delivered with the Ellipsoid Geolocation.
    • However, only for S-NPP, the VIIRS Ellipsoid Geolocation (GMODO) will remain orderable separately, just not associated with and delivered with theS-NPP VIIRS SDR data. GMODO will not be available from NOAA-20 or NOAA-21.
    • The VIIRS Day-Night Band SDR will continue to be associated with and delivered with the VIIRS Day-Night Band Geolocation.
    • VIIRS IPs and EDRs will not be affected by the VIIRS SDR geolocation change.

  • Important Update: Changes to CLASS URLs (03/28/2024):

    The new CLASS website and dissemination URLs are now active and the legacy URLs are no longer valid, except the old CLASS website URL will redirect users to the new URL for some time. See changes below.

    Defunct ftp links New ftp links
    ftp://ftp-jpss.avl.class.noaa.gov/ ftp://ftp-data.class.noaa.gov/JPSS/ (JPSS TAR files) (Case sensitive)
    ftp://ftp.avl.class.noaa.gov ftp://ftp-order.class.noaa.gov/ (ad hoc orders)
    ftp://ftp.avl.class.noaa.gov/sub ftp://ftp-order.class.noaa.gov/sub/ (subscriptions)

    The new ftp login user id changed from "anonymous" to "ftp" followed by any set of password characters defined by the user. These changes are in accordance with the transfer rules established within the AWS Transfer Family.

    Defunct https links New https links
    https://download.avl.class.noaa.gov/download/jpss/ https://data.class.noaa.gov/JPSS/ (JPSS TAR files) (Case sensitive)
    https://download.avl.class.noaa.gov/download/ https://order.class.noaa.gov/public/ (ad hoc orders)
    https://download.avl.class.noaa.gov/download/sub https://order.class.noaa.gov/public/sub/ (subscriptions)
    Old CLASS website URL New CLASS website URL
    https://www.avl.class.noaa.gov https://www.aev.class.noaa.gov

    Note: www.class.noaa.gov will continue to work

    If you have any questions or need assistance please submit an email to CLASS Help Desk.

  • Attention JPSS Data Users! (updated on 10/19/2023):

    Now available! The reprocessed Sensor Data Records (SDR) for all instruments flown on S-NPP and reprocessed Temperature Data Records (TDR) for the ATMS instrument flown on S-NPP is now accessible via the CLASS web ordering system. The reprocessed data is located under their own data families listed on the drop down product menu. The date range which covers the reprocessing period for each instrument is:

    • ATMS SDR/TDR (2011-11-08 - 2019-10-15) - The complete record is available under RPATMSSDR and RPATMSTDR
    • CrIS SDR (2012-02-20 - 2020-01-29) - The complete record is available under RPCRISSDR
    • OMPS SDR (2012-01-30 - 2020-05-30) - The complete record is available under RPOMPSSDR
    • VIIRS SDR (2012-01-02 - 2020-04-30) - The complete record is available under RPVIIRSSDR

    The operational data received after the reprocessed date ranges uses the latest version of the reprocessing algorithm.

  • Attention JPSS Users. Start dates and times of NOAA-21 products now available to the public. (4/20/2023):
    • ATMS Sensor Data Record: Dec 3, 2022 @23:49:55 UTC
    • ATMS Temperature Data Record: Dec 3, 2022 @23:49:55 UTC
    • CrIS Sensor Data Record Mar 23, 2023 @19:09:30 UTC
    • VIIRS Sensor Data Record Mar 30, 2023 @00:10 UTC
    • VIIRS Imagery Environmental Data Record: Mar 30, 2023 @00:10 UTC

    For easy access to the most recent JPSS global daily tar files please go to ftp://ftp-data.class.noaa.gov/JPSS/ or https://data.class.noaa.gov/JPSS/.

    Also, be sure to review the maturity Readmes for any data issues and caveats on the STAR JPSS Algorithm Maturity Matrix website at https://www.star.nesdis.noaa.gov/jpss/AlgorithmMaturity.php.

  • Attention New CLASS Users! See tutorial on accessing data from CLASS (4/12/2018):

    Please click on the following link to get step by step instructions on how to use CLASS to search and order data: https://www.aev.class.noaa.gov/notification/pdfs/CLASS%20Data%20Access%20Tutorial_042015.pdf..

    If you have any questions or need assistance please submit an email to CLASS Help Desk.