RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 1.3
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Publications citing RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 1.3
Citation metrics available for years (2014-2019)
| Year | Citation |
|---|---|
| 2018 | RapidScat Project, RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5 Km Swath Grid Version 1.3, PO.DAAC, California (2016). RapidScat backscatter measurement validation, Journal of Applied Remote Sensing,https://doi.org/10.1117/1.JRS.12.034005 |
| DOI | 10.5067/RSX12-L2A13 |
| Short Name | RSCAT_L2A_12KM_V1.3 |
| Description | This dataset contains the Version 1.3 ISS-RapidScat on Level 2A 12.5 km science data record, which provides surface-flagged sigma-0 in 12.5 km Wind Vector Cells processed using the pulse "slice" Sigma-0 data provided by the Level 1B dataset. Version 1.3 is intended as a replacement and continuation of the Version 1.1 and Version 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. Due to the circular scan of the RapidScat instrument the expected number of Sigma-0 cells per WVC is not constant. To minimize the L2A data volume, the Sigma-0 cell data are stored as "lists" for each WVC row, with each list indexed by a "cell_index" array to indicate the cross-track WVC membership of the data. Each cell is then checked for land or ice and flagged accordingly. Attenuation corrections for each Sigma-0 measurement are also provided. Data are provided in single-orbit files in HDF-4 format. 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. If you have any questions or concerns, please visit our Forum at https://podaac.jpl.nasa.gov/forum/. |
| Version | 1.3 |
| Dataset Type | COMPLETE |
| Measurement | SPECTRAL/ENGINEERING > RADAR > SIGMA NAUGHT |
| Processing Level | 2A |
| Coverage | Region: GLOBAL North Bounding Coordinate: 61 degrees South Bounding Coordinate: -61 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2016-Feb-11 to 2016-Aug-19 Granule Time Span: 2016-Feb-11 to 2016-Aug-19 |
| Resolution | Spatial Resolution: 12.5 km (Along) x 12.5 km (Across) |
| Projection | Ellipsoid: WGS 84 |
| Swath Width | 900 km |
| Platform/Sensor | ISS / Platform Name: International Space Station (ISS) Orbit Period: 92.91 minutes Inclination Angle: 51.65 degrees RapidScat SENSOR Name: Rapid Scatterometer (RapidScat) Swath Width: 1100.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | International Space Station Rapid Scatterometer (ISS_RapidScat) |
| Data Provider | Publisher: PO.DAAC Creator: RapidScat Project Release Place: PO.DAAC Release Date: 2016-Oct-28 Resource: http://www.jpl.nasa.gov/news/fact_sheets/issrapidscat_factsheet.pdf |
| Keyword(s) | international space station, space station, iss, rapidscat, rscat, iss-rapidscat, winds, radar, ocean, roughness, ocean roughness, backscatter, normalized radar cross-section, normalized radar cross section, nrcs, dB, sigma-0, sigma0, sigma naught, scatterometer, seawinds, l2a, l2, level 2, level 2a, 12.5 km, 12.5-km, 12.5, version 1, v1, version 1.3, v1.3, V1.3, 1.3 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
| Direct Access | |
| PO.DAAC DRIVE | https://podaac-tools.jpl.nasa.gov/drive/files/allData/rapidscat/L2A/12km/v1.3 PO.DAAC Drive |
| OPENDAP DATA | https://podaac-opendap.jpl.nasa.gov/opendap/allData/rapidscat/L2A/12km/v1.3/ The OPeNDAP base directory location for the collection. |
| Format (Compression) | HDF |
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| Citation | RapidScat Project. 2016. RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 1.3. Ver. 1.3. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/RSX12-L2A13
For more information see Data Citations and Acknowledgments.
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| Journal Reference | Fore, A.G., Stiles, B.W., Chau, A.H., Williams, B.A., Dunbar, R. S., Rodriguez E., 2013: Point-wise Wind Retrieval and Ambiguity Removal Improvements for the QuikSCAT Climatological Data Set. IEEE Trans. Geoscience and Remote Sensing, doi:10.1109/TGRS.2012.2235843. [Special Note: This paper describes the wind retrieval algorithm used to process the QuikSCAT version 3 wind product. The RapidScat data was processed using the same technique.] . |
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| Version | Dataset | Version Date | Status | |
|---|---|---|---|---|
| 2.0 | RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 2.0 | 2018-08-30 | ACTIVE | 1535589035679 |
| 1.3 | RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 1.3 | 2016-09-28 | ACTIVE | 1475027160259 |
| 1.2 | RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 1.2 | 2016-04-19 | ACTIVE | 1461026621149 |
| 1.1 | RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 12.5Km Swath Grid Version 1.1 | 2015-03-26 | ACTIVE | 1427402576957 |