Imaging · collection · 2016
RapidScat Level 2B Ocean Wind Vectors in 12.5km Slice Composites Version 1.3
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/rsx12-l2b13
Description
This dataset contains the RapidScat Level 2B 12.5km Version 1.3 science-quality ocean surface wind vectors, which are intended as a replacement and continuation of the Version 1.1 and 1.2 data forward from orbital revolution number 7873, corresponding to 11 February 2016; on 11 Feb 2016, RapidScat entered it's 3rd low signal to noise ratio (SNR) state and the initial calibration of low SNR 3 was preliminary during the Version 1.2 release.
The fundamental difference between Version 1.3 and the previous Version 1.2 datasets is that the L1B sigma-0 has been re-calibrated during the periods of low SNR states 3 and 4 using re-pointed QuikSCAT data. The Version 1.1 should still be considered valid up to the first rev of version 1.2 (5127), and similarly version 1.2 shall be considered valid up to the first rev of version 1.3 (7873). The Level 2B wind vectors are binned on a 12.5 km Wind Vector Cell (WVC) grid and processed using the Level 2A Sigma-0 dataset.
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RapidScat is a Ku-band dual beam circular rotating scatterometer retaining much of the same hardware and functionality of QuikSCAT, with exception of the antenna sub-system and digital interface to the International Space Station (ISS) Columbus module, which is where RapidScat is mounted. The NASA mission is officially referred to as ISS-RapidScat. Unlike QuikSCAT, ISS-RapidScat is not in sun-synchronous orbit, and flies at roughly half the altitude with a low inclination angle that restricts data coverage to the tropics and mid-latitude regions; the extent of latitudinal coverage stretches from approximately 61 degrees North to 61 degrees South.
Furthermore, there is no consistent local time of day retrieval. This dataset is provided in a netCDF-3 file format that follows the netCDF-4 classic model (i.e., generated by the netCDF-4 API) and made available via FTP and OPeNDAP. For data access, please click on the "Data Access" tab above.
It is advised for users to avoid using the "wind_obj" variable in this dataset since it is minimally applicable and meant primarily for quality assurance; for users who wish to access the objective function values for each ambiguity, it is suggested to use only the "ambiguity_obj" variable. The "wind_obj" variable contains DIRTH probabilities (which are derived form the "ambiguity_obj" objective function values) in the range of 0 to 1 indicating the conditional probability that the true direction is within + or - 2.5 degrees of the retrieved wind direction given the observed backscatter measurements in the cell.
If you have any questions or concerns, please visit our Forum at podaac.jpl.nasa.gov/forum/.
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
- Data Use and Citation Guidelines podaac.jpl.nasa.gov/CitingPODAAC ↗
documentation · download · from NASA CMR, data nasa gov
- Resource winds.jpl.nasa.gov/missions/RapidScat ↗
Website providing more detailed information about the ISS-RapidScat Mission.
documentation · download · from NASA CMR, data nasa gov
- README file archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/rapidscat/open/L2B12/v1.3/README.txt ↗
documentation · download · from NASA CMR, data nasa gov
- Summary of Facts on the ISS-RapidScat Mission jpl.nasa.gov/news/fact_sheets/issrapidscat_factsheet.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Text manati.star.nesdis.noaa.gov/rscat_images/monitor/RapidScat_Scheduled_Outages.txt ↗
Text file containing reverse chronological list of future scheduled outages and past outages. A start/stop date/time and description is provided for each outage. This list is maintained by NOAA/NESDIS
documentation · download · from NASA CMR, data nasa gov
- Access to Climate quality L2B data record. podaac.jpl.nasa.gov/dataset/RSCAT_LEVEL_2B_OWV_CLIM_12_V1 ↗
documentation · download · from NASA CMR, data nasa gov
- User Guide archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/rapidscat/open/L2B12/docs/rscat_l2b_us… ↗
documentation · download · from NASA CMR, data nasa gov
- Resource directory.eoportal.org/web/eoportal/satellite-missions/i/iss-rapidscat ↗
Detailed background information on the ISS-RapidScat mission published by the eoPortal.
documentation · download · from NASA CMR, data nasa gov
- CSV archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/rapidscat/open/L1B/docs/revtime.csv ↗
ASCII CSV orbital revolution time tables with quality assurance information.
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2526576326-POCLOUD.iso19115 ↗
download · from data nasa gov
- HTTPS endpoint for data browse and download cmr.earthdata.nasa.gov/virtual-directory/collections/C2526576326-POCLOUD ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2526576326-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/RSCAT_LEVEL_2B_OWV_COMP_12_V1.3.jpg ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/rapidscat-level-2b-ocean-wind-vectors-in-12-5km-slice-… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/rsx12-l2b13 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2526576326-POCLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=48c82cc1-a5e6-4fd0-b773-49147f99b… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2526576326-POCLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- International Space Station · Ocean Surface Wind Vectors · Rapid Scatterometer
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 17 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2526576326-POCLOUD | 11 d ago | JSON v1 |
| NASA Data Portal | 48c82cc1-a5e6-4fd0-b773-49147f99b3d9 | 8 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:rapidscat | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-winds/surface-winds/ocean-surface-wind-vectors | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:iss | 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 |