GHRSST NOAA/STAR Metop-B AVHRR FRAC ACSPO v2.80 1km L2P Dataset (GDS v2)

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). 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, https://doi.org/10.1175/JTECH-D-13-00121.1 ), in another NOAA system, SST Quality Monitor (SQUAM; Dash et al, 2010, https://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, https://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 https://doi.org/10.5067/GHMTB-3US28

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FGHMTB-2PS28
21 JPSS VIIRS level 3 uncollated sea surface temperature product at NOAA https://doi.org/10.1117/1.JRS.11.032405
21 Clear-Sky Mask for ACSPO https://doi.org/10.1175/2010JTECHA1413.1
21 The SST Quality Monitor (SQUAM) https://doi.org/10.1175/2010JTECHO756.1
21 GHRSST Global Data Assembly Center https://ghrsst.jpl.nasa.gov
21 Evaluation and Selection of SST Regression Algorithms for JPSS VIIRS https://doi.org/10.1002/2013JD020637
21 ACSPO Regional Monitor for SST (ARMS) https://www.star.nesdis.noaa.gov/socd/sst/arms/
21 Sensor-Specific Error Statistics for SST in the Advanced Clear-Sky Processor for Oceans https://doi.org/10.1175/JTECH-D-15-0166.1
22 Thumbnail https://podaac.jpl.nasa.gov/Podaac/thumbnails/AVHRRF_MB-STAR-L2P-v2.80.jpg
21 SST Quality Monitor (SQUAM) https://www.star.nesdis.noaa.gov/sod/sst/squam/
21 Data Use and Citation Policy https://podaac.jpl.nasa.gov/CitingPODAAC
21 HTTPS endpoint for data browse and download https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2205121394-POCLOUD
21 Browse granule search results in Earthdata Search https://search.earthdata.nasa.gov/search/granules?p=C2205121394-POCLOUD
21 Sensor Stability for SST (3S): Toward Improved Long-Term Characterization of AVHRR Thermal Bands https://doi.org/10.3390/rs8040346
21 Generic Data Readers https://github.com/podaac/data-readers
21 Monitoring of IR Clear-sky Radiances over Oceans for SST (MICROS) https://doi.org/10.1175/JTECH-D-10-05023.1
21 GHRSST Project Home Page https://www.ghrsst.org/
21 In situ SST Quality Monitor (iQUAM) https://www.star.nesdis.noaa.gov/sod/sst/iquam/
21 In situ SST Quality Monitor (iQuam) https://doi.org/10.1175/JTECH-D-13-00121.1
33 Documentation on the GDS version 2 format specification https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/ghrsst/open/docs/GDS20r5.pdf

Tags

  • oceans
  • ocean-temperature
  • earth-science

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