Data · collection
GHRSST Level 3U OSPO dataset v2.61 from VIIRS on NOAA-20 Satellite (GDS version 2)
Listed in NASA Earthdata CMR
NOAA-20 (hereafter, N20; also known as JPSS-1 or J1 prior to launch) is the second satellite in the US National Oceanic and Atmospheric Administration (NOAA) latest generation Joint Polar Satellite System (JPSS).
Description
N20 was launched on November 18, 2017. In conjunction with the first US satellite in JPSS series, Suomi National Polar-orbiting Partnership (S-NPP) satellite launched on October 28, 2011, N20 form the new NOAA polar constellation.
The ACSPO N20/VIIRS L3U (Level 3 Uncollated) product is a gridded version of the ACSPO N20/VIIRS L2P product. The L3U output files are 10-minute granules in netCDF4 format, compliant with the GHRSST Data Specification version 2 (GDS2). There are 144 granules per 24hr interval, with a total data volume of 500MB/day.
Read the rest (2 more)
Fill values are reported at all invalid pixels, including pixels with >5 km inland. For each valid water pixel (defined as ocean, sea, lake or river, and up to 5 km inland), the following layers are reported: SSTs, ACSPO clear-sky mask (ACSM; provided in each grid as part of l2p_flags, which also includes day/night, land, ice, twilight, and glint flags), NCEP wind speed, and ACSPO SST minus reference (Canadian Met Centre 0.1deg L4 SST).
Only L2P SSTs with QL=5 were gridded, so all valid SSTs are recommended for the users. Per GDS2 specifications, two additional Sensor-Specific Error Statistics layers (SSES bias and standard deviation) are reported in each pixel with valid SST. The ACSPO VIIRS L3U product is monitored and validated against iQuam in situ data (Xu and Ignatov, 2014) in SQUAM (Dash et al, 2010).
Links
Get the data
- DOI doi.org/10.25921/7c1m-rw73 ↗
Navigate directly to the URL for a descriptive web page with download links.
DOI / persistent id · download · from NASA CMR
- ftp-oceans.ncei.noaa.gov /pub/data.nodc/ghrsst/L3U/VIIRS_N20/OSPO ↗
These data are available through the File Transfer Protocol (FTP). You may use any FTP client to download these data.
download · from NASA CMR
- ncei.noaa.gov /thredds-ocean/catalog/ghrsst/L3U/VIIRS_N20/OSPO/catalog.html ↗
These data are available through a variety of services via a THREDDS (Thematic Real-time Environmental Distributed Data Services) Data Server (TDS). Depending on the dataset, the TDS can provide WMS,
download · from NASA CMR
- data.noaa.gov /onestop/collections/granules/AWkLsM_1DZOX1Zzi3lGl ↗
Search for data granules belonging to this collection (a granule is the smallest aggregation of data that can be independently described and retrieved).
download · from NASA CMR
- ncei.noaa.gov /data/oceans/ghrsst/L3U/VIIRS_N20/OSPO ↗
Navigate directly to the URL for data access and direct download.
download · from NASA CMR
Documentation and papers
- podaac-tools.jpl.nasa.gov /drive/files/allData/ghrsst/sw/generic_nc_readers ↗
Generic netCDF readers provided in multiple programming languages
documentation · from NASA CMR
- podaac-tools.jpl.nasa.gov /drive/files/OceanTemperature/ghrsst/docs/GDS20r5.pdf ↗
Documentation on the GDS version 2 format specification
documentation · from NASA CMR
- Sea Surface Temperature measurement description. podaac.jpl.nasa.gov/forum/viewtopic.php?f=7&t=298 ↗
documentation · from NASA CMR
- (Search Granule) podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-GHVRS-3UO61 ↗
documentation · from NASA CMR
- THREDDS Data Server access for this dataset thredds.jpl.nasa.gov/thredds/catalog_ghrsst_gds2.html?dataset=VIIRS_NPP-OSPO-L3U-v2… ↗
documentation · from NASA CMR
- Xu, F. star.nesdis.noaa.gov/sod/sst/iquam ↗
documentation · from NASA CMR
- Liang, X. star.nesdis.noaa.gov/sod/sst/micros ↗
documentation · from NASA CMR
- Dash, P., A. Ignatov, Y. Kihai star.nesdis.noaa.gov/sod/sst/squam ↗
documentation · from NASA CMR
- ghrsst.jpl.nasa.gov ↗
Portal to the GHRSST Global Data Assembly Center and data access
documentation · from NASA CMR
- journals.ametsoc.org /doi/abs/10.1175/2010JTECHA1413.1 ↗
Petrenko, B., A. Ignatov, Y. Kihai, and A. Heidinger, 2010: Clear-Sky Mask for ACSPO. JTech, 27, 1609-1623
documentation · from NASA CMR
- onlinelibrary.wiley.com /doi/10.1002/2013JD020637/abstract ↗
Petrenko, B., A. Ignatov, Y. Kihai, J. Stroup, P. Dash, 2014: Evaluation and Selection of SST Regression Algorithms for JPSS VIIRS. JGR, 119, 4580-4599, doi: 10.1002/2013JD020637
documentation · from NASA CMR
- Preview graphic ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc%3AGHRSST… ↗
preview image · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1628768206-NOAA_NCEI.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1628768206-NOAA_NCEI.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 1 source records, 14 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1628768206-NOAA_NCEI | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:viirs | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-winds/surface-winds/wind-speed | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-temperature/sea-surface-temperature | 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:noaa-20 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | 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 |