Pre SWOT Hydrology Global Lake/Reservoir Surface Inland Water Height GREALM V.2
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DOI10.5067/UCLRS-GREV2
Short NamePRESWOT_HYDRO_L2_GREALM_LAKE_HEIGHT_V2
DescriptionThe Global Lake/Reservoir Surface Inland Water Height Time Series is derived from the G-REALM10 lake level product https://ipad.fas.usda.gov/cropexplorer/global_reservoir/ The purpose of this dataset is to provide surface water dynamics for several hundred lakes and reservoirs across the globe. These time series potentially span a 25 year time period, from late 1992 to 2017, satisfying the project goal of ESDR creation with a suitable level of quality that supports long-term trend analysis and global water dynamics models. Water level variation is also a key component required for the determination of surface water storages and fluxes. This product is readily accessible and is of direct use to both water managers and the scientific community worldwide, and allows for improved assessment and modeling of the human impact on the global water cycle. 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.
Version2
Dataset TypeOPEN
MeasurementTERRESTRIAL HYDROSPHERE > SURFACE WATER > LAKES
Processing Level2
CoverageRegion: Global
Northernmost Latitude: 66 degrees
Southernmost Latitude: -66 degrees
Westernmost Longitude: 0 degrees
Easternmost Longitude: 360 degrees
Time Span: 1992-Sep-25 to 2018-Nov-24
Granule Time Span: 1992-Sep-25 to 2019-Dec-23
ResolutionSpatial Resolution: 0 km (Along) x 0 km (Across)
ProjectionType:
Detail:
Ellipsoid:
Latency hours
Swath Width5.1 km
Sample Frequency-
Temporal Repeat (Nominal)-
Temporal Repeat (Min)-
Temporal Repeat (Max)-
Platform/Sensor
OSTM/JASON-2
Platform
Name: Ocean Surface Topography Mission/Jason-2 (OSTM/JASON-2)
Orbit Period: 112.43 minutes
Inclination Angle: 66.04 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
POSEIDON-3
SENSOR
Name: OSTM/Jason-2 RADAR alitmieter (POSEIDON-3)
Swath Width: 5.1 km
Description: The Poseidon-3 altimeter, operating at 13.575 GHz (Ku band) and 5.3 GHz (C band), is the primary sensor for the OSTM mission. The measurements made at the two frequencies are combined to obtain measurements of the altimeter range, wind speed, significant wave height, and the ionoshperic correction. The Poseidon-3 package consists of dual redundant altimeter units each of which has low mass and low power consumption.

ProjectMaking Earth Science Data Records for Use in Research Environments (MEaSUREs)
Data ProviderCreator: Birkett, Charon; Ricko, Martina; Yang, Xu
Release Place: PO.DAAC
Release Date: 2019-Nov-15
Resource: https://podaac-tools.jpl.nasa.gov/drive/files/allData/preswot_hydrology/L2/lakes_reservoirs/docs/MEaSUReS_L2-handbook_Nov8.pdf
Keyword(s)lake, reservoir, area, hydrology, pre-swot, inland, water, water height, ucla, swot
Persistent IDPODAAC-UCLRS-GREV2
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Citation Birkett, Charon; Ricko, Martina; Yang, Xu. 2019. Pre SWOT Hydrology Global Lake/Reservoir Surface Inland Water Height GREALM V.2. Ver. 2. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/UCLRS-GREV2.

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