The EUMETSAT Satellite Application Facility (SAF) on support to operational hydrology and water management (H - SAF) was established by the EUMETSAT Council in July 2005 and the Development phase started on 1st September 2005.
H - SAF membership includes 12 EUMETSAT member or cooperating States (Austria, Belgium, Bulgaria, Finland, France, Germany, Hungary, Italy, Poland, Romania, Slovakia and Turkey) and ECMWF. The H - SAF is hosted by the Italian Met Service.
In the framework of the H - SAF the interest for new satellite products focuses on:
...
ECMWF is a contributor to the core soil moisture product and is represented in the H - SAF Steering Group and the Project Team.
Visiting Scientist reports:
ECMWF H-SAF products:
ECMWF H SAF products:
- SM-DAS-2 (H14): Metop ASCAT NRT Root Zone Soil Moisture Profile Index 25 km sampling description and previews: EO:EUM:DAT:MODEL:SM-DAS-2
RZSM-ASCAT-NRT-10 (H26): Metop ASCAT NRT Root Zone Soil Moisture Profile Index 10 km sampling description and previews: EO:EUM:DAT:0600
- RZSM-DR2019-10 (H141): Scatterometer Root Zone Soil Moisture (RZSM) Data Record 10 km resolution (1992-2018): doi.org/10.15770/EUM_SAF_H_0008
- RZSM-DR-EXT-10 (H142): Offline scatterometer Root Zone Soil Moisture (RZSM) Data Record extension (2019-2021), 10 km resolution:
- Powerpoint presentation of current near-real-time products and climate data records, and future H SAF root-zone soil moisture products
- Powerpoint presentation about downloading and visualizing products with metview-python
- How to read and plot RZSM products
- RZSM-DR2019-10km (H141) documentation and offline extension (H142):
- Product User Manual (H141_PUM_R02.pdf)
- Algorithm Theoretical Baseline Document (H141_ATBD_R02.PDF)
- Product Validation Report (H141_PVR_R02.PDF)
- Product Validation Report (H141_H142_DGCDD.pdf
- )
- SM-DAS-2 (H14)
- SM-DAS-2 (H14): ASCAT near-real-time root zone product description and previews
- How to read SM-DAS-2 and SM-DAS-3
- converting grib to regular netCDF files
Converting grib to netCDF with CDO:
- - The following examples use the CDO tool, which is free to download from:
https://code.mpimet.mpg.de/projects/cdo - - In the terminal, we will convert the grib file from reduced Gaussian to regular lat/lon. In order to this we need to know the number of regular latitude points correspoding to the linear reduced Gaussian grid (T799~N400), which can be found at:
https://www.ecmwf.int/en/forecasts/documentation-and-support/gaussian_n400 - - Given there are 1600 regular latitude points (and 800 longitude points), we can convert our reduced Gaussian grid to regular lat/lon:
module load cdo
- To convert to regular lat/lon
cdo -R remapcon,r1600x800 -setgridtype,regular h14_2019053000.grib h14_2019053000_r.grib
- Then convert the file from grib to netcdf:
cdo -f nc copy h14_2019053000_r.grib h14_2019053000.nc
- Then extract the Italian domain from the global netcdf file (lon0=5, lon1=19, lat0=36, lat1=48):
cdo -sellonlatbox,5,19,36,48 h14_2019053000.nc h14_2019053000_Italy.nc
#Note that the size of the file is vastly reduced (h14_2019053000.nc ~ 25 mb, h14_2019053000_Italy.nc ~ 70 kb)!
- Size of netCDF files can be further reduced by compression e.g.
cdo -f nc4c -z zip_6 copy h14_2019053000_r.grib h14_2019053000_compressed.nc
- - The following examples use the CDO tool, which is free to download from:
- SM-DAS-2 / H14 documentation:
- Product User Manual (SAF_HSAF_PUM-14.pdf)
- Algorithm Theoretical Baseline Document (SAF_HSAF_ATBD-14_0_2.pdf)
- Product Validation Report (SAF_HSAF_PVR-14.pdf)
- Data Output Format (SAF_HSAF_DOF_H14_v1.2.pdf)
RZSM-ASCAT-NRT-10 (H26) documentation
References:
- Aires, F., Weston, P., de Rosnay, P. and Fairbairn, D., 2021. Statistical approaches to assimilate ASCAT soil moisture information—I. Methodologies and first assessment. Quarterly Journal of the Royal Meteorological Society, 147(736), pp.1823-1852.
- Fairbairn, D., Weston, P. and de Rosnay, P., 2019: Revision and evaluation of ASCAT soil moisture bias correction parameters for IFS cycle 47r3. ECMWF research memorandum.
- Gruhier C., Albergel C., de Rosnay P., Hasenauer S., Zeiner B., 2010: "Comparison between H SAF large scale surface soil moisture, H SAF assimilated soil moisture and SMOS level 2 soil moisture". (H SAF_CDOP_VS11_02.pdf)
- Pellarin T., de Rosnay P., Albergel C., Abdalla S., Al Bitar A., 2013: "Root-zone soil moisture index complementary validation at global scale based on triple collocation method. Comparison with State-Of-The-Art global scale root-zone soil moisture products." (H SAF_CDOP2_VS12_02.pdf)