SWOT Level 2 Water Mask Raster Image Data Product, Version C
(SWOT_L2_HR_Raster_2.0)| Version | 2.0 |
| Processing Level | 2 |
| Start/Stop Date | 2022-Dec-16 to Present |
| Short Name | SWOT_L2_HR_Raster_2.0 |
| Description | The SWOT Level 2 Water Mask Raster Image Data Product from the Surface Water Ocean Topography (SWOT) mission provides global surface water elevation and inundation extent derived from high rate (HR) measurements from the Ka-band Radar Interferometer (KaRIn) on SWOT. SWOT launched on December 16, 2022 from Vandenberg Air Force Base in California into a 1-day repeat orbit for the "calibration" or "fast-sampling" phase of the mission, which completed in early July 2023. After the calibration phase, SWOT entered a 21-day repeat orbit in August 2023 to start the "science" phase of the mission, which is expected to continue through 2025. Water surface elevation, area, water fraction, backscatter, geophysical information are provided in geographically fixed scenes at resolutions of 100 m and 250 m in Universal Transverse Mercator (UTM) projection. Available in netCDF-4 file format. On-demand processing available to users for different resolutions, sampling grids, scene sizes, and file formats. Please note that this collection contains SWOT Version C science data products. This dataset is the parent collection to the following sub-collections: https://podaac.jpl.nasa.gov/dataset/SWOT_L2_HR_Raster_100m_2.0 https://podaac.jpl.nasa.gov/dataset/SWOT_L2_HR_Raster_250m_2.0 |
| DOI | 10.5067/SWOT-RASTER-2.0 |
| Measurement | TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES |
| Swath Width | 120 km |
| Platform/Sensor | SWOT / Platform Name: Surface Water Ocean Topography (SWOT) KaRIn SENSOR Name: Ka-band Radar Interferometer (KaRIn) SWOT / Platform Name: Surface Water Ocean Topography (SWOT) Jason-class Altimeter SENSOR Name: Jason-class Altimeter (Jason-class Altimeter) SWOT / Platform Name: Surface Water Ocean Topography (SWOT) AMR SENSOR Name: Advanced Microwave Radiometer (AMR) Swath Width: 18.7 ghz Description: The operating frequency which is aimed towards recovery of atmospheric attenuation due to sigma0 Swath Width: 23.8 ghz Description: The operating frequency which is aimed towards recovery of atmospheric attenuation due to water vapor Swath Width: 34.0 ghz Description: The operating frequency which is aimed towards recovery of atmospheric attenuation due to cloud liquid water. SWOT / Platform Name: Surface Water Ocean Topography (SWOT) DORIS SENSOR Name: Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) SWOT / Platform Name: Surface Water Ocean Topography (SWOT) GPSP SENSOR Name: Global Positioning System Payload (GPSP) Show More |
| Project | Surface Water Ocean Topography (SWOT) |
| Data Provider | Publisher: JPL NASA Creator: Surface Water Ocean Topography (SWOT) Release Place: Jet Propulsion Laboratory Release Date: 2024-Feb-01 Resource: https://swot.jpl.nasa.gov/ |
| Format | netCDF-4 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 100 Meters x 100 Meters Coverage Region: GLOBAL North Bounding Coordinate: 90 degrees South Bounding Coordinate: -90 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2022-Dec-16 to PresentSwath Width: 120 km Projection Ellipsoid: WGS 84 |
| DIRECT ACCESS | |
| Browse Granule Listing | |
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| DIRECT S3-ACCESS | |
| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-swot-ops-cumulus-protected/SWOT_L2_HR_Raster_2.0/ | |
| podaac-swot-ops-cumulus-public/SWOT_L2_HR_Raster_2.0/ | |
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| Name | Long Name | Unit |
|---|---|---|
| cross_track | approximate cross-track location | m |
| crs | CRS Definition | |
| dark_frac | fractional area of dark water | l |
| geoid | geoid height | m |
| height_cor_xover | height correction from KaRIn crossovers | m |
| ice_clim_flag | climatological ice cover flag | |
| ice_dyn_flag | dynamic ice cover flag | |
| illumination_time | time of illumination of each pixel (UTC) | seconds since 2000-01-01 00:00:00.000 |
| illumination_time_tai | time of illumination of each pixel (TAI) | seconds since 2000-01-01 00:00:00.000 |
| inc | incidence angle | degrees |
| iono_cor_gim_ka | ionosphere vertical correction | m |
| latitude | latitude (positive N, negative S) | degrees_north |
| layover_impact | layover impact | m |
| load_tide_fes | geocentric load tide height (FES) | m |
| load_tide_got | geocentric load tide height (GOT) | m |
| longitude | longitude (degrees East) | degrees_east |
| model_dry_tropo_cor | dry troposphere vertical correction | m |
| model_wet_tropo_cor | wet troposphere vertical correction | m |
| n_other_pix | number of other pixels | l |
| n_sig0_pix | number of sigma0 pixels | l |
| n_water_area_pix | number of water surface area pixels | l |
| n_wse_pix | number of water surface elevation pixels | l |
| pole_tide | geocentric pole tide height | m |
| sig0 | sigma0 | 1 |
| sig0_cor_atmos_model | two-way atmospheric correction to sigma0 from model | 1 |
| sig0_qual | summary quality indicator for the sigma0 | |
| sig0_qual_bitwise | bitwise quality indicator for the sigma0 | |
| sig0_uncert | uncertainty in sigma0 | 1 |
| solid_earth_tide | solid Earth tide height | m |
| water_area | water surface area | m^2 |
| water_area_qual | summary quality indicator for the water surface area | |
| water_area_qual_bitwise | bitwise quality indicator for the water surface area | |
| water_area_uncert | uncertainty in the water surface area | m^2 |
| water_frac | water fraction | 1 |
| water_frac_uncert | uncertainty in the water fraction | 1 |
| wse | water surface elevation above geoid | m |
| wse_qual | summary quality indicator for the water surface elevation | |
| wse_qual_bitwise | bitwise quality indicator for the water surface elevation | |
| wse_uncert | uncertainty in the water surface elevation | m |
| x | x coordinate of projection | m |
| y | y coordinate of projection | m |
| DATA CITATION GUIDELINES | |
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| USER'S GUIDE | |
| GENERAL DOCUMENTATION | |
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| ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) | |
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
| Citation | Surface Water Ocean Topography (SWOT). 2024. SWOT Level 2 Water Mask Raster Image Data Product, Version C. Ver. C. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/SWOT-RASTER-2.0
For more information see Data Citations and Acknowledgments.
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| Journal Reference | JPL Internal Document. 2018. Surface Water and Ocean Topography Mission (SWOT) Project: Science Requirements Document, JPL D-61923, Rev. B, Jet Propulsion Laboratory. |
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