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    • GHRSST L2P NOAA/ACSPO GOES-18/ABI West America Region Sea Surface Temperature v2.90 dataset (GDS version 2)

    Metadata Updated: May 1, 2025

    The G18-ABI-L2P-ACSPO-v2.90 dataset produced by the NOAA ACSPO system is used to derive Subskin and Depth Sea Surface Temperature (SST) from the ABI onboard the G18 satellite. NOAA’s G18 (aka, GOES-T pre-launch) was launched on March 1, 2022, replacing the G17 as GOES West in Jan'2023. It is the third satellite in the US GOES–R Series, the Western Hemisphere’s most sophisticated weather-observing and environmental-monitoring system. The ABI is the primary instrument on the GOES-R Series for imaging Earth’s weather, oceans, and environment.

    G18/ABI maps SST in a Full Disk (FD) area from 163E-77W and 60S-60N, with a spatial resolution of 2km/nadir to 15km/VZA 67-deg, and 10-min temporal sampling. The 10-min FD data are subsequently collated in time, to produce the 1-hr product, with improved coverage and reduced cloud leakages and image noise. The L2P is produced in netCDF4 GDS2 format, with 24 granules per day, and a total data volume 0.8 GB/day. The near-real time (NRT) data are updated hourly, with several hours latency. The NRT files are replaced with Delayed Mode (DM) files, with a latency of ~2-months. File names remain unchanged, and DM vs NRT can be identified by different time stamps and global attributes inside the files (MERRA instead of GFS for atmospheric profiles, and same day CMC L4 analyses in DM instead of one-day delayed in NRT processing).

    Pixel earth locations are not reported in the granules, as they remain unchanged from granule to granule. Those can be obtained using a flat lat/lon file or a Python script available at Documents tab under How-To section. The ACSPO G18 ABI SSTs are validated against quality controlled in situ data from the NOAA iQuam system (Xu and Ignatov, 2014) and continuously monitored in NOAA SQUAM system (Dash et al, 2010). A 0.02-deg equal-angle gridded L3C product 0.7GB/day) is also available.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date 2025-04-29T20:25:26Z
    Metadata Created Date October 2, 2023
    Metadata Updated Date May 1, 2025
    Reference Date(s) August 22, 2023 (publication), April 29, 2025 (revision)
    Frequency Of Update daily

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Series
    Metadata Date 2025-04-29T20:25:26Z
    Metadata Created Date October 2, 2023
    Metadata Updated Date May 1, 2025
    Reference Date(s) August 22, 2023 (publication), April 29, 2025 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:GHRSST-ABI_G18-STAR-L2P
    Access Constraints Cite as: Ignatov, Alexander; Pryamitsyn, Victor; Kihai, Yury; Gladkova, Irina; Jonasson, Olafur; Petrenko, Boris (2023). GHRSST L2P NOAA/ACSPO GOES-18/ABI West America Region Sea Surface Temperature v2.90 dataset (GDS version 2). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/sr4z-pj22. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long -55.80115
    Bbox North Lat 81.14685
    Bbox South Lat -81.14883
    Bbox West Long 141.8049
    Coupled Resource
    Frequency Of Update daily
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:GHRSST-ABI_G18-STAR-L2P
    Graphic Preview Type PNG
    Harvest Object Id 0b091ea1-3faf-4da7-9802-edba00c6d7e4
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[141.8049, -81.14883], [-55.80115, -81.14883], [-55.80115, 81.14685], [141.8049, 81.14685], [141.8049, -81.14883]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2023-04-05

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