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.
Resources
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| Data Information (Unknown Format) | Binary | Attitude_Table_FM_1.txt | Open resource |
| Text File | Text | Attitude_Table_FM_1.txt | Open resource |
| Text File | Text | Attitude_Table_FM_2.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_2.txt | Open resource |
| Text File | Text | Attitude_Table_FM_3.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_3.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_4.txt | Open resource |
| Text File | Text | Attitude_Table_FM_4.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_5.txt | Open resource |
| Text File | Text | Attitude_Table_FM_5.txt | Open resource |
| Text File | Text | Attitude_Table_FM_6.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_6.txt | Open resource |
| Text File | Text | Attitude_Table_FM_7.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_7.txt | Open resource |
| Text File | Text | Attitude_Table_FM_8.txt | Open resource |
| Data Information (Unknown Format) | Binary | Attitude_Table_FM_8.txt | Open resource |
| PDF File | ucar_cu_sm_handbook.pdf | Open resource | |
| Data Information (PDF) | ucar_cu_sm_handbook.pdf | Open resource | |
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| Original Metadata | Unknown | The metadata's original source. | Open resource |
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| Data Information (Unknown Format) | Binary | Open resource | |
| JPEG Image File | JPG | CYGNSS_L3_SOIL_MOISTURE_V1.0.jpg | Open resource |
| Data Information (JPEG) | JPG | CYGNSS_L3_SOIL_MOISTURE_V1.0.jpg | Open resource |
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| Data Information (Unknown Format) | Binary | Open resource |