GHRSST L3C NOAA/ACSPO Himawari-09 AHI Pacific Ocean Region Sea Surface Temperature v2.90 dataset
(H09-AHI-L3C-ACSPO-v2.90)| Version | 2.90 |
| Processing Level | 3 |
| Start/Stop Date | 2022-Oct-22 to Present |
| Short Name | H09-AHI-L3C-ACSPO-v2.90 |
| Description | The H09-AHI-L3C-ACSPO-v2.90 dataset contains the Subskin Sea Surface Temperature (SST) produced by the NOAA ACSPO system from the Advanced Himawari Imager (AHI; largely identical to GOES-R/ABI) onboard the Himawari-9 (H09) satellite. The H09 is a Japanese weather satellite, the 9th of the Himawari geostationary weather satellite operated by the Japan Meteorological Agency. It was launched on November 2, 2016 into its nominal position at 140.7-deg E, and declared operational on December 13, 2022, replacing the Himawari-8. The AHI is the primary instrument on the Himawari Series for imaging Earth’s weather, oceans, and environment with high temporal and spatial resolutions. The H09-AHI-L3C-ACSPO-v2.90 dataset is a gridded version of the ACSPO H09-AHI-L2P-ACSPO-v2.90 dataset (https://podaac.jpl.nasa.gov/dataset/AHI_H09-STAR-L2P-v2.90). The L3C (Level 3 Collated) data is mapped on 0.02-deg lat-lon grid and outputs 24 hourly granules per day, with a daily volume of 0.7 GB/day. Valid SSTs are found over oceans, sea, lakes or rivers, with fill values reported elsewhere. All valid SSTs in L3C are recommended for users, although data over internal waters may not have enough in situ data to be adequately validated. Per GDS2 specifications, two additional Sensor-Specific Error Statistics layers (bias and standard deviation) are reported in each pixel with valid SST. The ACSPO H09/AHI L3C product is validated against iQuam in situ data (Xu and Ignatov, 2014) and continuously monitored in the NOAA SQUAM system (Dash et al, 2010). The NRT files are replaced with Delayed Mode (DM) files, with a latency of approximately 2-months. File names remain unchanged, and DM vs NRT can be identified by different time stamps and global attributes inside the files (MERRA for DM instead of GFS for atmospheric profiles, and same day CMC L4 analyses in DM instead of one-day delayed in NRT processing). |
| DOI | 10.5067/GHH09-3C290 |
| Measurement | OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE |
| Platform/Sensor | Himawari-9 / Platform Name: (Himawari-9) Inclination Angle: 0.03 degrees AHI SENSOR Name: Advanced Himawari Imager (AHI) Swath Width: 500.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | Group for High Resolution Sea Surface Temperature (GHRSST) |
| Data Provider | Publisher: PO.DAAC Creator: NOAA/NESDIS/STAR Release Place: Camp Springs, MD (USA) Release Date: 2023-Aug-08 Resource: https://www.star.nesdis.noaa.gov/star/index.php |
| Format | netCDF-4 |
| Keyword(s) | GHRSST, SST, H09, Himawari-9, AHI, OSPO, STAR, v2.90, ACSPO, JMA |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 0.02 Decimal Degrees x 0.02 Decimal Degrees Temporal Resolution: Hourly - < Daily Coverage Region: PACIFIC OCEAN North Bounding Coordinate: 60 degrees South Bounding Coordinate: -60 degrees West Bounding Coordinate: 80 degrees East Bounding Coordinate: -160 degrees Time Span: 2022-Oct-22 to Present Granule Time Span: 2022-Oct-22 to 2026-Apr-09 Projection Projection Type: Satellite native view / two vertical cells blended Projection Detail: Geolocation information included for each pixel Ellipsoid: WGS 84 |
| DIRECT ACCESS | |
| Browse Granule Listing | |
| OPENDAP DATA | |
| Search Granules | |
| This dataset can be downloaded using the podaac-data-subscriber (the recommended tool for bulk downloading PO.DAAC data). It is a Python package for downloading one or many files using the command line interface. The URL redirects to the data-subscriber home page with instructions for utilizing the tool | |
| DIRECT S3-ACCESS | |
| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/H09-AHI-L3C-ACSPO-v2.90/ | |
| podaac-ops-cumulus-public/H09-AHI-L3C-ACSPO-v2.90/ | |
AWS S3 Credentials | |
| Get AWS S3 Credentials | Documentation | |
| Name | Long Name | Unit |
|---|---|---|
| crs | coordinate reference system | |
| dt_analysis | deviation from SST reference | kelvin |
| l2p_flags | L2P flags | |
| lat | latitude | degrees_north |
| lon | longitude | degrees_east |
| or_number_of_pixels | number of pixels from the L2Ps contributing to the SST value | 1 |
| quality_level | quality level of SST pixel | |
| satellite_zenith_angle | satellite zenith angle | degrees |
| sea_surface_temperature | sea surface sub-skin temperature | kelvin |
| sses_bias | SSES bias estimate | kelvin |
| sses_standard_deviation | SSES standard deviation | kelvin |
| sst_dtime | time difference from reference time | seconds |
| sst_front_position | Binary SST front position indicator | |
| sst_gradient_magnitude | SST gradient magnitude value | kelvin/km |
| time | reference time of sst file | seconds since 1981-01-01 00:00:00 |
| wind_speed | wind speed | m s-1 |
| DATA CITATION GUIDELINES | |
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| GENERAL DOCUMENTATION | |
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| DATA RECIPE | |
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| USER'S GUIDE | |
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
| Citation | NOAA/NESDIS/STAR. 2023. GHRSST L3C NOAA/ACSPO Himawari-09 AHI Pacific Ocean Region Sea Surface Temperature v2.90 dataset
. Ver. 2.90. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/GHH09-3C290
For more information see Data Citations and Acknowledgments.
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| Journal Reference | A. Ignatov, I. Gladkova, Y. Ding, F. Shahriar, Y. Kihai, X. Zhou. 2017. JPSS VIIRS level 3 uncollated sea surface temperature product at NOAA, J. Appl. Remote Sens., 11, 3. https://doi.org/10.1117/1.JRS.11.032405 |
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| Version | Dataset | Version Date | Status | |
|---|---|---|---|---|
| 2.90 | GHRSST L3C NOAA/ACSPO Himawari-09 AHI Pacific Ocean Region Sea Surface Temperature v2.90 dataset | 2021-07-22 | ACTIVE | 2021-07-22T00:36:00.000Z |
| 2.70 | GHRSST NOAA/STAR Himawari-08 AHI L3C Pacific Ocean Region SST v2.70 dataset in GDS2 | 2021-07-22 | COMPLETE | 2021-07-22T00:36:00.000Z |