Pre SWOT Hydrology GRRATS Virtual Station River Heights Version 2
The Global River Radar Altimeter Time Series (GRRATS) are simulated river gauge data that are derived from ERS-1, ERS-2, TOPEX/Poseidon OSTM/Jason-2, Jason-3 and Envisat altimetric measurements. The purpose of these heights are to provide satellite altimetric river height data in a form that is more recognizable to the observational community and as a way to get users use to using satellite data for river hydrology. These pre SWOT data are derived from satellites to provide hydrological measurements. The Surface Water and Ocean Topography (SWOT) mission will have hydrology as one of its objectives. This dataset does not have the same variables as SWOT, but does provide hydrological measurements with typical quality flagging typical of satellite data. Not only does it provide science information, it can also assist hydrological users new to satellite data with the satellite data formats and variables before SWOT launches.If you are looking for version 1 it can be found at https://podaac.jpl.nasa.gov/dataset/PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V1 however this version should be used with caution. Version 2, this page, is the most recent version with the most accurate algorithms used for producing river heights.
| Science Keywords: |
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| Spatial Extent: | Bounding Rectangle: N: 90 S: -90 E: 180.0 W: -180.0 |
Data Format(s): | Distribution: NETCDF |
| Temporal Extent: | Platform(s): | OSTM/JASON-2, ERS-1, ENVISAT, JASON-3, JASON-1, ERS-2 | |
| Data Center(s): | NASA/JPL/PODAAC | Instrument(s): | POSEIDON-3, ERS-1 ALTIMETER, RA-2, POSEIDON-3B, POSEIDON-2, ERS-2 Altimeter |
| Version: | 2 | ||
- Title: PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V2
- Version: 2
- Creator: Coss, Stephen; Durand, Michael; Lettenmaier, Dennis; Yi, Yuchan; Jia, Yuanyuan; Guo, Qi; Tuozzolo, Stephen; Shum, C.K.; Allen, George H.; Calmant, Stephane; Pavelsky, Tamlin
- Publisher: NASA/JPL/SWOT
- Release Date: 2019-08-30T00:00:00.000Z
- Other Citation Details: Coss, Stephen; Durand, Michael; Lettenmaier, Dennis; Yi, Yuchan; Jia, Yuanyuan; Guo, Qi; Tuozzolo, Stephen; Shum, C.K.; Allen, George H.; Calmant, Stephane; Pavelsky, Tamlin, NASA/JPL/SWOT, 2019-08-30, Pre SWOT Hydrology GRRATS Virtual Station River Heights Version 2, https://podaac-tools.jpl.nasa.gov/drive/files/allData/preswot_hydrology/L2/rivers/docs/GRRATS_user_handbookV2.pdf
- Linkage: https://podaac-tools.jpl.nasa.gov/drive/files/allData/preswot_hydrology/L2/rivers/docs/GRRATS_user_handbookV2.pdf
- DATA CITATION POLICY: https://podaac.jpl.nasa.gov/CitingPODAAC, Data Use and Citation Policy
10.5067/PSGRA-SA2V2
https://dx.doi.org/
- USER'S GUIDE: https://podaac-tools.jpl.nasa.gov/drive/files/allData/preswot_hydrology/L2/rivers/docs/GRRATS_user_handbookV2.pdf, User guidance documentation for this dataset
Collection Information
Data Identification
-
Processing Level
2
- Quality
-
Collection Progress
Active
Data Dates
| Creation | |
| Last Revision |
Related URLs
Other Descriptive Keywords
Ancillary Keywords
- river
- area
- hydrology
- pre-swot
- inland
- water
- osu
- water height
- swot
Additional Attributes
- Name: earliest_granule_start_time DATETIME Description: Earliest Granule Start Time for dataset.
- Name: latest_granule_end_time DATETIME Description: Latest Granule Stop/End Time for dataset.
- Name: Series Name STRING Description: Dataset citation series name
- Name: Persistent ID STRING Description: Dataset Persistent ID
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| MEaSUREs | No campaigns listed. | No dates provided. |
Temporal Information
Temporal Keywords
- 8 Day
Spatial Information
Generic Resolutions
Generic Resolution 1
X Dimension250 Meters
Y Dimension500 Meters
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | CARTESIAN | CARTESIAN |
Resolution and Coordinate System
Geodetic Model:
| Datum Name | Ellipsoid Name | Semi Major Axis | Flattening Ratio Denominator |
|---|---|---|---|
| World Geodetic System 1984 | WGS 84 | 6378137 | 298.2572236 |
Horizontal Data Resolution
| Coverage Type | Swath Width | Period | Inclination Angle | Number of Orbits | Start Circular Latitude | Granule Representation |
|---|---|---|---|---|---|---|
| ORBITAL | 5.1 km | 112.43 minutes | 66.04 degrees | 1 | CARTESIAN |
Spatial Information
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL
Data Centers
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MEaSUREs
PROCESSORThis data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
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NASA/JPL/PODAAC
ARCHIVER, DISTRIBUTORPhysical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Data Contacts
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Help Desk
User ServicesHelp Desk
NASA/JPL/PODAACThis contact does not have any addresses listed.
8 AM to 5 PM PT
Physical Oceanography Distributed Active Archive Center Help Page
https://podaac.jpl.nasa.gov/HELP
- Home Page
Archive And Distribution Information
-
Format: NETCDF
Format Type: Native
File Distribution Information
There is no direct distribution information for this collection.