Soil Humidity in Luxembourg 2002-2024

Soil moisture data covering the whole area of Luxembourg for the first 1-2 cm, as well as 5-10 cm soil depth:

- April 2002 to September 2022: C and X band for the first 1-2 cm soil depth.
- April 2015 to September 2022: L-band for the first 5-10 cm of soil depth.

with a resolution of 100 x 100 m per pixel and with a temporal resolution of "once per day" and an average number of 280 images per year images per year (as a combination of C, X and L-band sources)


### Details
| Product  | Unit  | Sensing Depth  | Pixel size *  | Temporal resolution  | Data availability |
|---|---|---|---|---|---|
| Volumetric Soil Moisture L-Band (SM)  | m3/m3  | 5cm   | 100x100m, 0.000888888888889 degree  | 230 observations per year at 52 degree lat.  | April 2015 - September 2022 |
| Volumetric Soil Moisture C-Band (SM)  | m3/m3  | 2cm   | 100x100m, 0.000888888888889 degree  | 320 observations per year at 52 degree lat.  | April 2002 - September 2022 / Gap in 2012 |
| Volumetric Soil Moisture X-Band (SM)  | m3/m3  | 1cm   | 100x100m, 0.000888888888889 degree  | 320 observations per year at 52 degree lat.  | April 2002 - September 2022 / Gap in 2012 |
\* pixel size is given as a number in meters. This is an approximate size as the data itself is stored in decimal degrees (WGS84). The actual size in decimal degrees is given in the description of each data product.

### Content of the yearly archives
In each yearly archive you will find several folders. Here is the description of each folder:

- **SM-SMAP-LN-DESC:**  Volumetric Soil Moisture L-band (SM) / Satellite observed volumetric soil moisture derived from L-band microwave data in combination with other bands. It is based on VanderSat's patented high-resolution technology and provides **soil moisture of the top 5 cm of the soil** depending on moisture conditions. VanderSat’s L-band data is retrieved from the **SMAP satellite**.
- **SM-AMSR2-C1N-DESC:** Volumetric Soil Moisture C-band (SM) / Satellite observed volumetric soil moisture derived from C-band microwave data in combination with other bands. It is based on VanderSat's patented high-resolution technology and provides **top soil soil moisture of the top 2 cm of the soil** depending on moisture conditions. VanderSat's C-band soil moisture is **derived from the Advanced Microwave Scanning Radiometer 2 (AMSR2) on board the GCOM-W1 satellite** as well the Advanced Microwave Scanning Radiometer - EOS (AMSRE) on board the AQUA satellite.
- **SM-AMSRE-C1N-DESC:** Volumetric Soil Moisture C-band (SM) / Satellite observed volumetric soil moisture derived from C-band microwave data in combination with other bands. It is based on VanderSat's patented high-resolution technology and provides **top soil soil moisture of the top 2 cm of the soil** depending on moisture conditions. VanderSat's C-band soil moisture is **derived from** the Advanced Microwave Scanning Radiometer 2 (AMSR2) on board the GCOM-W1 satellite as well the **Advanced Microwave Scanning Radiometer - EOS (AMSRE) on board the AQUA satellite**.
- **SM-AMSR2-XN-DESC:** Volumetric Soil Moisture X-band (SM) / Satellite observed volumetric soil moisture derived from X-band microwave data in combination with other bands. It is based on VanderSat's patented high-resolution technology and provides **top soil soil moisture of the top 1 cm of the soil** depending on moisture conditions. VanderSat's X-band soil moisture is **derived from the Advanced Microwave Scanning Radiometer 2 (AMSR2) on board the GCOM-W1 satellite**, the Advanced Microwave Scanning Radiometer - EOS (AMSRE) on board the AQUA satellite and the GMI sensor on board the Global Precipitation Measurement (GPM) satellite.
- **SM-AMSRE-XN-DESC:** Volumetric Soil Moisture X-band (SM) / Satellite observed volumetric soil moisture derived from X-band microwave data in combination with other bands. It is based on VanderSat's patented high-resolution technology and provides **top soil soil moisture of the top 1 cm of the soil** depending on moisture conditions. VanderSat’s X-band soil moisture is **derived from** the Advanced Microwave Scanning Radiometer 2 (AMSR2) on board the GCOM-W1 satellite, the Advanced Microwave Scanning Radiometer EOS (AMSRE) on board the AQUA satellite and the GMI sensor on board the Global Precipitation Measurement (GPM) satellite.

All the folders starting with "QF-" contain the data flags related to the corresponding data. 

### Technical details
GeoTIFF images are provided for the following extent (WGS84 latitude/longitude):
Extent (minx, miny, maxx, maxy) = 5.7, 49.4, 6.58, 50.23
This corresponds to a number of 981 x 917 pixel

| Parameter | Value | 
| --- | --- | 
| Data type | uint16 |
| Compression | LZW | 
| Scale | 0.001 | 
| Offset | 0 | 
| Band 1 | Soil moisture | 
| Band 2 | Data marked as unreliable | 
| NoData | 65535 |