UCAR-CU CYGNSS Level 3 Soil Moisture Version 1.0
(CYGNSS_L3_SOIL_MOISTURE_V1.0)| Version | 1.0 |
| Processing Level | 3 |
| Start/Stop Date | 2017-Mar-18 to Present |
| Short Name | CYGNSS_L3_SOIL_MOISTURE_V1.0 |
| Description | The CYGNSS Level 3 Soil Moisture Product provides volumetric water content estimates for soils between 0-5 cm depth at a 6-hour discretization for most of the subtropics. The data were produced by CYGNSS investigators at the University Corporation for Atmospheric Research (UCAR) and the University Colorado at Boulder (CU), and derive from version 2.1 of the CYGNSS L1 SDR. The soil moisture algorithm uses collocated soil moisture retrievals from SMAP to calibrate CYGNSS observations from the same day. For a given location, a linear relationship between the SMAP soil moisture and CYGNSS reflectivity is determined and used to transform the CYGNSS observations into soil moisture. The data are archived in daily files in netCDF-4 format. Two soil moisture variables report the volumetric water content in units of cm3/cm3. The variable SM_subdaily includes up to four soil moisture estimates per day. Another variable SM_daily provides a daily average. The time series covers the period from March 2017 to present. |
| DOI | 10.5067/CYGNU-L3SM1 |
| Measurement | LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT |
| Platform/Sensor | CYGNSS / Platform Name: Cyclone Global Navigation Satellite System (CYGNSS) Orbit Period: 94.0 minutes Inclination Angle: 35.0 degrees DDMI SENSOR Name: Delay Doppler Mapping Instrument (DDMI) Swath Width: 25.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | Cyclone Global Navigation Satellite System (CYGNSS) |
| Data Provider | Publisher: PO.DAAC Creator: CYGNSS Release Place: PO.DAAC Release Date: 2020-Oct-16 Resource: https://cygnss.engin.umich.edu/ |
| Format | netCDF-4 |
| Keyword(s) | cygnss, level 3, l3, soil moisture, bistatic radar, cosmic, ucar, cu, version 1.0, v1.0, version 1, v1 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 0.3 Decimal Degrees x 0.37 Decimal Degrees Temporal Resolution: Hourly - < Daily Coverage Region: GLOBAL North Bounding Coordinate: 38 degrees South Bounding Coordinate: -38 degrees West Bounding Coordinate: -135 degrees East Bounding Coordinate: 164 degrees Time Span: 2017-Mar-18 to Present Granule Time Span: 2017-Mar-18 to 2024-May-03 Projection Projection Type: Lambert Cylindrical Equal Area Projection Detail: WGS 84 / NSIDC EASE-Grid 2.0 Global |
| 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/CYGNSS_L3_SOIL_MOISTURE_V1.0/ | |
| podaac-ops-cumulus-public/CYGNSS_L3_SOIL_MOISTURE_V1.0/ | |
AWS S3 Credentials | |
| Get AWS S3 Credentials | Documentation | |
| TOOLS AND SERVICES | |
| Quality Flags (.nc) | |
| ANOMALIES | |
| |
| GENERAL DOCUMENTATION | |
| |
| PUBLICATIONS | |
| |
| |
| DATA RECIPE | |
| |
| USER'S GUIDE | |
| |
| |
| DATA CITATION POLICY | |
|
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 | CYGNSS. 2020. UCAR-CU CYGNSS Level 3 Soil Moisture Version 1.0. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/CYGNU-L3SM1
For more information see Data Citations and Acknowledgments.
|
||||||||
| Journal Reference | Chew, C.C., E.E. Small.. 2020. Description of the UCAR/CU Soil Moisture Product, Remote Sens, 12, 10. https://doi.org/10.3390/rs12101558 |
||||||||
| Version | Dataset | Version Date | Status | |
|---|---|---|---|---|
| 1.1 | CYGNSS Level 3 Soil Moisture Version 1.1 | 2024-04-10 | ACTIVE | 2024-04-10T19:46:00.000Z |
| 1.0 | UCAR-CU CYGNSS Level 3 Soil Moisture Version 1.0 | 2022-04-11 | ACTIVE | 2022-04-11T17:36:00.000Z |