Imaging · collection · 2021
GHRSST NOAA/STAR Metop-B AVHRR FRAC ACSPO v2.80 1km L2P Dataset (GDS v2)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/ghmtb-2ps28
Description
The MetOp First Generation (FG) is a European multi-satellite program jointly established by ESA and EUMETSAT, comprising three satellites, MetOp-A, -B and -C. The primary sensor onboard MetOp-FG, the Advanced Very High Resolution Radiometer/3 (AVHRR/3) contributed by NOAA, measures Earth emissions and reflectances in 5 out of 6 available bands (centered at 0.63, 0.83, 1.61, 3.7, 11 and 12 microns), in a swath of 2,600km from an 817km altitude.
These data are collected in a Full Resolution Area Coverage (FRAC) mode, with pixel size of 1.1km at nadir. Metop-B launched on 17 September 2012 is the second in the MetOp-FG series. The NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) Level 2 Preprocessed (L2P) SST product is derived at the full AVHRR FRAC resolution and reported in 10 minute granules in NetCDF4 format, compliant with the GHRSST Data Specification version 2 (GDS2).
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Subskin SSTs are derived using the regression Nonlinear SST (NLSST) algorithm, which employs three bands (3.7, 11 and 12 microns) at night and two bands (11 and 12 microns) during the day. The ACSPO AVHRR FRAC L2P product is monitored and validated against quality controlled in situ data, provided by the NOAA in situ SST Quality Monitor system (iQuam; Xu and Ignatov, 2014, doi.org/10.1175/JTECH-D-13-00121.1 ), in another NOAA system, SST Quality Monitor (SQUAM; Dash et al, 2010, doi.org/10.1175/2010JTECHO756.1 ).
SST imagery and clear-sky masking are continuously evaluated, and checked for consistency with other sensors and platforms, in the ACSPO Regional Monitor for SST (ARMS) system. MetOp-A orbital characteristics and AVHRR/3 sensor performance are tracked in the NOAA 3S system (He et al., 2016, doi.org/10.3390/rs8040346 ).The L2P Near Real Time (NRT) SST files are archived at PO.DAAC with 3-6 hours latency, and then replaced by the Re-ANalysis (RAN) SST after about 2 months later with identical file names.
Two features can be used to identify them: different file name time stamps and netCDF global attribute metadata source=NOAA-NCEP-GFS for NRT and source=MERRA-2 for RAN. A reduced size (0.45GB/day), equal-angle gridded (0.02-deg resolution) ACSPO L3U product is available at doi.org/10.5067/GHMTB-3US28
Links
Get the data
- Resource opendap.earthdata.nasa.gov ↗
This dataset can be accessed with the Open-source Project for a Network Data Access Protocol (OPeNDAP) API framework. This service enables variable and dimensional subsetting. The URL redirects to a p
metadata API · download · from NASA CMR, data nasa gov
- Resource doi.org/10.3390/rs8040346 ↗
Sensor Stability for SST (3S): Toward Improved Long-Term Characterization of AVHRR Thermal Bands
documentation · download · from NASA CMR, data nasa gov
- Generic Data Readers github.com/podaac/data-readers ↗
documentation · download · from NASA CMR, data nasa gov
- Resource doi.org/10.1175/jtech-d-10-05023.1 ↗
Monitoring of IR Clear-sky Radiances over Oceans for SST (MICROS)
documentation · download · from NASA CMR, data nasa gov
- In situ SST Quality Monitor (iQUAM) star.nesdis.noaa.gov/sod/sst/iquam ↗
documentation · download · from NASA CMR, data nasa gov
- Resource doi.org/10.1002/2013jd020637 ↗
Evaluation and Selection of SST Regression Algorithms for JPSS VIIRS
documentation · download · from NASA CMR, data nasa gov
- PDF archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/ghrsst/open/docs/GDS20r5.pdf ↗
Documentation on the GDS version 2 format specification
documentation · download · from NASA CMR, data nasa gov
- ACSPO Regional Monitor for SST (ARMS) star.nesdis.noaa.gov/socd/sst/arms ↗
documentation · download · from NASA CMR, data nasa gov
- Resource doi.org/10.1175/jtech-d-15-0166.1 ↗
Sensor-Specific Error Statistics for SST in the Advanced Clear-Sky Processor for Oceans
documentation · download · from NASA CMR, data nasa gov
- SST Quality Monitor (SQUAM) star.nesdis.noaa.gov/sod/sst/squam ↗
documentation · download · from NASA CMR, data nasa gov
- Resource doi.org/10.1117/1.jrs.11.032405 ↗
JPSS VIIRS level 3 uncollated sea surface temperature product at NOAA
documentation · download · from NASA CMR, data nasa gov
- Clear-Sky Mask for ACSPO doi.org/10.1175/2010jtecha1413.1 ↗
documentation · download · from NASA CMR, data nasa gov
- Data Use and Citation Guidelines podaac.jpl.nasa.gov/CitingPODAAC ↗
documentation · download · from NASA CMR, data nasa gov
- GHRSST Project Home Page ghrsst.org ↗
documentation · download · from NASA CMR, data nasa gov
- The SST Quality Monitor (SQUAM) doi.org/10.1175/2010jtecho756.1 ↗
documentation · download · from NASA CMR, data nasa gov
- GHRSST Global Data Assembly Center ghrsst.jpl.nasa.gov ↗
documentation · download · from NASA CMR, data nasa gov
- In situ SST Quality Monitor (iQuam) doi.org/10.1175/jtech-d-13-00121.1 ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2205121394-POCLOUD.iso19115 ↗
download · from data nasa gov
- HTTPS endpoint for data browse and download cmr.earthdata.nasa.gov/virtual-directory/collections/C2205121394-POCLOUD ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2205121394-POCLOUD ↗
Browse granule search results in Earthdata Search
download · from NASA CMR
- github.com /podaac/data-subscriber ↗
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 lin
download · from NASA CMR
- JPEG podaac.jpl.nasa.gov/Podaac/thumbnails/AVHRRF_MB-STAR-L2P-v2.80.jpg ↗
download · preview image · from data nasa gov, NASA CMR
- Resource harmony.earthdata.nasa.gov ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/ghrsst-noaa-star-metop-b-avhrr-frac-acspo-v2-80-1km-l2… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/ghmtb-2ps28 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2205121394-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=b1ed2f86-5cec-4838-b124-199002697… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2205121394-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 2 source records, 17 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2205121394-POCLOUD | 12 d ago | JSON v1 |
| NASA Data Portal | b1ed2f86-5cec-4838-b124-199002697fdb | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:avhrr-3 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-temperature/sea-surface-temperature/sea-surface-skin-temperature | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:metop-b | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |