The environmental parameters are computed at Level-2 processing.
- U and V components of the model wind vector computed from the interpolation of two meteorological fields
- Altimeter wind speed using ECMWF conversion table
- Water vapour content using the radiometer brightness temperature
- Liquid vapour content using the radiometer brightness temperature
- Total electron content
|
PARAMETER |
Total Electron Content |
|
NETCDF NAME |
total_electron_content_[x1]_[x2] |
|
DESCRIPTION |
The ALT_COR_RAN_05 algorithm computes the total electron content |
|
UNITS |
1010 counts |
|
DATA SET AVAILABILITY |
Reduced: none |
|
OPERATING MODE AVAILABILITY |
LRM and SAR |
|
DATA ORIGIN |
1 Hz Ku/C-bands: ALT_COR_RAN_05 |
|
ADDITIONAL INFORMATION |
None |
|
PARAMETERS RELATED |
None |
|
PARAMETER DETAILED DESCRIPTION |
ESA's Global Land and Ocean Mission for GMES Operational Services |
|
PARAMETER |
Altimeter Wind Speed Over Ocean |
|
NETCDF NAME |
wind_speed_alt_[x1]_[x2] |
|
DESCRIPTION |
The ALT_PHY_WIN_01 algorithm computes the 10 m wind speed using a table that converts corrected Ku-band backscatter coefficient and the Ku-band significant wave height to wind speed. This table was created by ECMWF. Do not use this value over land surfaces. |
|
UNITS |
10-2 m/s |
|
DATA SET AVAILABILITY |
Reduced: 1 Hz |
|
OPERATING MODE AVAILABILITY |
LRM only |
|
DATA ORIGIN |
1 Hz Ku/C-bands: ALT_PHY_WIN_020 |
|
ADDITIONAL INFORMATION |
None |
|
PARAMETERS RELATED |
None |
|
PARAMETER DETAILED DESCRIPTION |
ESA's Global Land and Ocean Mission for GMES Operational Services |
|
PARAMETER |
Water Vapour Content Measured by Radiometer |
|
NETCDF NAME |
rad_water_vapor_[x1]_[x2] |
|
DESCRIPTION |
The RAD_PHY_GEN_01 algorithm computes water vapour content from the radiometer 23.8 GHz and 36.5 GHz brightness temperatures (interpolated at the SRAL time-tag) and from the Ku-band sigma0, using a neural network function. |
|
UNITS |
10-1 kg/m2 |
|
DATA SET AVAILABILITY |
Reduced: 1 Hz |
|
OPERATING MODE AVAILABILITY |
LRM and SAR |
|
DATA ORIGIN |
1 Hz Ku/C-bands: RAD_PHY_GEN_01 |
|
ADDITIONAL INFORMATION |
None |
|
PARAMETERS RELATED |
None |
|
PARAMETER DETAILED DESCRIPTION |
ESA's Global Land and Ocean Mission for GMES Operational Services |
|
PARAMETER |
Liquid Water Content Measured by Radiometer |
|
NETCDF NAME |
rad_liquid_water_[x1]_[x2] |
|
DESCRIPTION |
The RAD_PHY_GEN_01 algorithm computes atmosphere cloud liquid water content from the radiometer 23.8 GHz and 36.5 GHz brightness temperatures (interpolated at the SRAL time-tag) and from the Ku-band sigma0, using a neural network function |
|
UNITS |
10-2 kg/m2 |
|
DATA SET AVAILABILITY |
Reduced: 1 Hz |
|
OPERATING MODE AVAILABILITY |
LRM and SAR |
|
DATA ORIGIN |
1 Hz Ku/C-bands: RAD_PHY_GEN_01 |
|
ADDITIONAL INFORMATION |
None |
|
PARAMETERS RELATED |
None |
|
PARAMETER DETAILED DESCRIPTION |
ESA's Global Land and Ocean Mission for GMES Operational Services |
|
PARAMETER |
U and V Components of the Model Wind Vector |
|
NETCDF NAME |
wind_speed_mod_u_[x1]_[x2] |
|
DESCRIPTION |
The GEN_COR_RAN_01 algorithm computes the 10 m wind vector components U (zonal component) and V (meridian component) at the altimeter measurement by a linear interpolation in time between two consecutive (6 hours apart) model data files. ECMWF (European Centre for Medium-Range Weather Forecasts) provides these meteorological data files. |
|
UNITS |
10-2 m/s |
|
DATA SET AVAILABILITY |
Reduced: none |
|
OPERATING MODE AVAILABILITY |
LRM and SAR |
|
DATA ORIGIN |
1 Hz Ku/C-bands: GEN_COR_RAN_01 |
|
ADDITIONAL INFORMATION |
None |
|
PARAMETERS RELATED |
None |
|
PARAMETER DETAILED DESCRIPTION |
ESA's Global Land and Ocean Mission for GMES Operational Services |