Pre SWOT Hydrology GRRATS Virtual Station River Heights Version 2
(PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V2)
4 Publications Cited this Dataset
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Publications citing Pre SWOT Hydrology GRRATS Virtual Station River Heights Version 2
Citation metrics available for years (2014-2022)
Year | Citation |
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2020 | Lake topography and active storage from satellite observations of flood frequency, Water Resources Research ,https://doi.org/10.1029/2019WR026362 |
2021 | Amazon hydrology from space: scientific advances and future challenges, Journal ,10.1029/2020RG000728 |
2022 | Channel water storage anomalies: A new remotely sensed measurement for global river analysis ,10.1002/essoar.10504533.1 |
2022 | Satellite-Based Surface Water Storage Estimation: Its History, Current Status, and Future Prospects, IEEE Geoscience and Remote Sensing Magazine ,10.1109/MGRS.2022.3175159 |
Version | 2 |
Processing Level | 2 |
Start/Stop Date | 1992-Apr-06 to 2018-Apr-20 |
Short Name | PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V2 |
Description | 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. |
DOI | 10.5067/PSGRA-SA2V2 |
Measurement | TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES |
Swath Width | 5.1 km |
Platform/Sensor | OSTM/JASON-2 / Platform Name: Joint Altimetry Satellite Oceanography Network - 2 (OSTM/JASON-2) Orbit Period: 112.43 minutes Inclination Angle: 66.04 degrees POSEIDON-3 SENSOR Name: JASON-2 RADAR ALTIMETER (POSEIDON-3) Swath Width: 5.1 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. ERS-1 / Platform Name: European Remote Sensing Satellite-1 (ERS-1) Orbit Period: 100.3 minutes Inclination Angle: 98.5 degrees ALTIMETERS SENSOR Name: ALTIMETERS (ALTIMETERS) Swath Width: 143.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. ENVISAT / Platform Name: Environmental Satellite (ENVISAT) Orbit Period: 100.59 minutes Inclination Angle: 98.55 degrees RA-2 SENSOR Name: Radar Altimeter-2 (RA-2) Swath Width: 5.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. JASON-3 / Platform Name: Joint Altimetry Satellite Oceanography Network - 3 (JASON-3) Orbit Period: 112.0 minutes Inclination Angle: 66.05 degrees POSEIDON-3B SENSOR Name: Poseidon-3B Altimeter (POSEIDON-3B) Swath Width: 5.1 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. JASON-1 / Platform Name: JASON-1 (JASON-1) Orbit Period: 112.43 minutes Inclination Angle: 66.04 degrees POSEIDON-2 SENSOR Name: JASON-1 RADAR ALTIMETER (POSEIDON-2) Show More |
Project | Making Earth System Data Records for Use in Research Environments (MEaSUREs) |
Data Provider | Publisher: NASA/JPL/SWOT 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 Release Place: PO.DAAC Release Date: 2019-Aug-30 Resource: https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/preswot_hydrology/open/L2/rivers/docs/GRRATS_user_handbookV2.pdf |
Format | netCDF-4 |
Keyword(s) | river, area, hydrology, pre-swot, inland, water, osu, water height, swot |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 500 Meters x 250 Meters Temporal Resolution: Weekly - < Monthly 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: 1992-Apr-06 to 2018-Apr-20 Granule Time Span: 1992-Apr-08 to 2018-Apr-20Swath Width: 5.1 km Projection Ellipsoid: WGS 84 |
DIRECT ACCESS | |
Browse Granule Listing | |
Search Granules | |
DIRECT S3-ACCESS | |
Available for access in-region with AWS Cloud | |
Region | |
us-west-2 | |
podaac-ops-cumulus-protected/PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V2/ | |
podaac-ops-cumulus-public/PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V2/ | |
AWS S3 Credentials | |
Get AWS S3 Credentials | Documentation |
Name | Long Name | Unit |
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/Filter/icefreeze | Freeze_dates_for_river | |
/Filter/icethaw | Thaw_dates_for_river | |
/Filter/maxh | Maximum_elevation_allowed_by_filter_above_EGM08_geoid | m |
/Filter/minh | Minimum_elevation_allowed_by_filter_above_EGM08_geoid | m |
/Filter/nNODATA | Number of Cycles without Data | count |
/Filter/riverh | River_elevation_from_filter_file_above_EGM08_geoid | m |
/Sampling/island | Island Flag | |
/Sampling/latbox | Latitude Box Extents | degree_north |
/Sampling/lonbox | Longitude Box Extents | degree_east |
/Timeseries/cycle | altimiter cycle | |
/Timeseries/hbar | Average_Height_above_EGM08 | m |
/Timeseries/hbarST | Average_Height_above_EGM08_SF | m |
/Timeseries/hwbar | Weighted_Average_Height_above_EGM08 | m |
/Timeseries/pkbar | Average Peakiness | - |
/Timeseries/sig0bar | Average Sigma0 | days since 1901-01-01T00:00:00 |
/Timeseries/time | time | days since 1901-01-01T00:00:00 |
/Unprocessed GDR Data/allfilter | Combined_good_heights_and_ice_free_flag | |
/Unprocessed GDR Data/cycle | Unprocessed_GDR_Altimiter_cycle | |
/Unprocessed GDR Data/h | unprocessed_height_above_EGM08 | m |
/Unprocessed GDR Data/heightfilter | Good heights flag | |
/Unprocessed GDR Data/icefilter | No_ice_flag | |
/Unprocessed GDR Data/lat | latitude | degrees_north |
/Unprocessed GDR Data/lon | longitude | degrees_east |
/Unprocessed GDR Data/pk | Peakiness | |
/Unprocessed GDR Data/sig0 | Sigma0 | dB |
/Unprocessed GDR Data/time | time | days since 1901-01-01T00:00:00 |
Flow_Dist | distance_from_river_mouth | km |
lat | latitude | degrees_north |
lon | longitude | degrees_east |
nse | MAX nash sutcliffe efficiency | |
nsemedian | median nash sutcliffe efficiency | |
nsemedianst | median nash sutcliffe efficiency SF | |
nsest | MAX nash sutcliffe efficiency SF | |
pass | pass_number | |
prox | gage proximity | m |
proxE | Nash Sutcliffe efficiency of most proximal gage | m |
proxR | correlation coefficient nearest | |
proxSTD | standard deviation nearest | m |
R | correlation coefficient | |
rate | sampling rate | Hz |
Rst | correlation coefficient SF | |
std | MIN standard deviation of error | m |
stdmedian | median standard deviation of error | m |
stdmedianst | median standard deviation of error SF | m |
stdst | MIN standard deviation of error SF | m |
DATA RECIPE | |
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USER'S GUIDE | |
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DATA CITATION POLICY | |
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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 | Coss, Stephen; Durand, Michael; Lettenmaier, Dennis; Yi, Yuchan; Jia, Yuanyuan; Guo, Qi; Tuozzolo, Stephen; Shum, C.K.; Allen, George H.; Calmant, Stephane; Pavelsky, Tamlin. 2019. PRESWOT_HYDRO_GRRATS_L2_VIRTUAL_STATION_HEIGHTS_V2. Ver. 2. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/PSGRA-SA2V2
For more information see Data Citations and Acknowledgments.
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Journal Reference |
Version | Dataset | Version Date | Status | |
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2 | Pre SWOT Hydrology GRRATS Virtual Station River Heights Version 2 | 2021-09-27 | COMPLETE | 2021-09-27T21:06:00.000Z |
1 | Pre SWOT Hydrology GRRATS Jason-2 Virtual Station Heights Version 1 | Present | RETIRED. | |