| Mission | Jason-3 |
| MVA-Name | jason3_f_hf |
| Source | SGDR-F |
| Frequency | 20 |
agc.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -2 | db | agc | Automatic Gain Control
Named agc_ku in GDR-D standard. AGC is corrected for instrumental errors due to the imperfections of the on-board attenuators Source: SGDR-F Original-Parameter: data_01/ku/agc |
| 2 | +2 | -2 | db | agc_rms | RMS of AGC
Named agc_rms_ku in GDR-D standard. Compression of Ku band high rate elements is preceded by a detection of outliers. Only valid high-rate values are used to compute this element Source: SGDR-F Original-Parameter: data_01/ku/agc_rms |
doppler.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | doppler | Doppler Correction
Named doppler_corr_ku in GDR-D standard Source: SGDR-F Original-Parameter: data_01/ku/range_cor_doppler |
ebias.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | emb | Sea State Bias
Named sea_state_bias_ku in GDR-D standard. A sea state bias correction must be added (negative value) to the instrument range to correct this range measurement for sea state delays of the radar pulse. This element should not be used over land. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/ku/sea_state_bias |
ebias.02
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | emb | Sea State Bias
A sea state bias correction must be added (negative value) to the instrument range to correct this range measurement for sea state delays of the radar pulse. This element should not be used over land. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/ku/sea_state_bias_adaptive |
icefg.01
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 |
instr.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | +4 | - | sec | isec | Integer Seconds Elapsed Since Epoch
Named time_20hz in GDR-D standard. Time of measurement in seconds in the UTC time scale since 1 Jan 2000 00:00:00 UTC. [tai_utc_difference] is the difference between TAI and UTC reference time (seconds) for the first measurement of the data set. If a leap second occurs within the data set, the attribute [leap_second] is set to the UTC time at which the leap second occurs Source: SGDR-F Original-Parameter: data_20/time |
| 2 | +4 | -6 | sec | msec | Microseconds, Fractional Part of isec
Named time_20hz in GDR-D standard. Time of measurement in seconds in the UTC time scale since 1 Jan 2000 00:00:00 UTC. [tai_utc_difference] is the difference between TAI and UTC reference time (seconds) for the first measurement of the data set. If a leap second occurs within the data set, the attribute [leap_second] is set to the UTC time at which the leap second occurs Source: SGDR-F Original-Parameter: data_20/time |
| 3 | +4 | -3 | m | ralt | Altimeter Range
Named range_20hz_ku in GDR-D standard. All instrumental corrections included, i.e. distance antenna-COG (/data_01/range_cor_cog), USO drift correction (/data_01/range_cor_uso), internal path correction (/data_01/ku/range_cor_internal_path), Doppler correction (/data_01/ku/range_cor_doppler), modeled instrumental errors correction (/data_01/ku/range_cor_ocean_model_instr) and system bias Source: SGDR-F Original-Parameter: data_20/ku/range_ocean |
| 4 | +2 | -3 | m | stdalt | RMS of Altimeter Range
n.a. |
| 5 | 2 | -2 | m | swh | Significant Wave Height
Named swh_20hz_ku in GDR-D standard. All instrumental corrections included, i.e. modeled instrumental errors correction (/data_01/ku/swh_cor_ocean_model_instr) and system bias Source: SGDR-F Original-Parameter: data_20/ku/swh_ocean |
| 6 | +2 | -2 | m | stdswh | RMS of Significant Wave Height
n.a. |
| 7 | +2 | -2 | db | sigma0 | Backscatter Coefficient
Named sig0_20hz_ku in GDR-D standard. All instrumental corrections included, excepted the system bias, i.e. AGC instrumental errors correction, internal calibration correction (/data_01/ku/sig0_cor_calibration), modeled instrumental errors correction (/data_01/ku/sig0_cor_ocean_model_instr) and atmospheric attenuation (sig0_cor_atm) Source: SGDR-F Original-Parameter: data_20/ku/sig0_ocean |
| 8 | +1 | -1 | m/s | windsp | Wind Speed
n.a. |
| 9 | +1 | - | - | iflags | Instrument Status and Quality Flags
Source: SGDR-F Original-Parameter: data_20/ku/agc Flags: 1 : agc in [0,32767] 2 : swh_ocean in [0,32767] 128 : range_ocean == 2147483647 |
instr.01
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | +4 | - | sec | isec | Integer Seconds Elapsed Since Epoch
Time of measurement in seconds in the UTC time scale since 1 Jan 2000 00:00:00 UTC. [tai_utc_difference] is the difference between TAI and UTC reference time (seconds) for the first measurement of the data set. If a leap second occurs within the data set, the attribute [leap_second] is set to the UTC time at which the leap second occurs Source: SGDR-F Original-Parameter: data_01/time |
| 2 | +4 | -6 | sec | msec | Microseconds, Fractional Part of isec
Time of measurement in seconds in the UTC time scale since 1 Jan 2000 00:00:00 UTC. [tai_utc_difference] is the difference between TAI and UTC reference time (seconds) for the first measurement of the data set. If a leap second occurs within the data set, the attribute [leap_second] is set to the UTC time at which the leap second occurs Source: SGDR-F Original-Parameter: data_01/time |
| 3 | +4 | -3 | m | ralt | Altimeter Range
Named ice_range_20hz_ku in GDR-D standard. Distance antenna-COG (/data_01/range_cor_cog), USO drift correction (/data_01/range_cor_uso), internal path correction (/data_01/ku/range_cor_internal_path), Doppler correction (/data_01/ku/range_cor_doppler) and system bias included Source: SGDR-F Original-Parameter: data_20/ku/range_ocog |
| 4 | +2 | -3 | m | stdalt | RMS of Altimeter Range
n.a. |
| 5 | 2 | -2 | m | swh | Significant Wave Height
n.a. |
| 6 | +2 | -2 | m | stdswh | RMS of Significant Wave Height
n.a. |
| 7 | +2 | -2 | db | sigma0 | Backscatter Coefficient
Named ice_sig0_20hz_ku in GDR-D standard. AGC instrumental errors correction and internal calibration correction (/data_01/ku/sig0_cor_calibration) included Source: SGDR-F Original-Parameter: data_20/ku/sig0_ocog |
| 8 | +1 | -1 | m/s | windsp | Wind Speed
n.a. |
| 9 | +1 | - | - | iflags | Instrument Status and Quality Flags
Source: SGDR-F Original-Parameter: data_20/ku/agc Flags: 1 : agc in [0,32767] 128 : range_ocog == 2147483647 |
instr.02
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | +4 | - | sec | isec | Integer Seconds Elapsed Since Epoch
Named time_20hz in GDR-D standard. Time of measurement in seconds in the UTC time scale since 1 Jan 2000 00:00:00 UTC. [tai_utc_difference] is the difference between TAI and UTC reference time (seconds) for the first measurement of the data set. If a leap second occurs within the data set, the attribute [leap_second] is set to the UTC time at which the leap second occurs Source: SGDR-F Original-Parameter: data_20/time |
| 2 | +4 | -6 | sec | msec | Microseconds, Fractional Part of isec
Named time_20hz in GDR-D standard. Time of measurement in seconds in the UTC time scale since 1 Jan 2000 00:00:00 UTC. [tai_utc_difference] is the difference between TAI and UTC reference time (seconds) for the first measurement of the data set. If a leap second occurs within the data set, the attribute [leap_second] is set to the UTC time at which the leap second occurs Source: SGDR-F Original-Parameter: data_20/time |
| 3 | +4 | -3 | m | ralt | Altimeter Range
All instrumental corrections included, i.e. distance antenna-COG (/data_01/range_cor_cog), USO drift correction (/data_01/range_cor_uso), internal path correction (/data_01/ku/range_cor_internal_path), Doppler correction (/data_01/ku/range_cor_doppler) and system bias Source: SGDR-F Original-Parameter: data_20/ku/range_adaptive |
| 4 | +2 | -3 | m | stdalt | RMS of Altimeter Range
Compression of Ku band high rate elements is preceded by a detection of outliers. Only valid high-rate values are used to compute this element Source: SGDR-F Original-Parameter: data_01/ku/range_adaptive_rms |
| 5 | 2 | -2 | m | swh | Significant Wave Height
No correction applied Source: SGDR-F Original-Parameter: data_20/ku/swh_adaptive |
| 6 | +2 | -2 | m | stdswh | RMS of Significant Wave Height
Compression of Ku band high rate elements is preceded by a detection of outliers. Only valid high-rate values are used to compute this element Source: SGDR-F Original-Parameter: data_01/ku/swh_adaptive_rms |
| 7 | +2 | -2 | db | sigma0 | Backscatter Coefficient
All instrumental corrections included, excepted the system bias, i.e. AGC instrumental errors correction, internal calibration correction (/data_01/ku/sig0_cor_calibration) and atmospheric attenuation (sig0_cor_atm) Source: SGDR-F Original-Parameter: data_20/ku/sig0_adaptive |
| 8 | +1 | -1 | m/s | windsp | Wind Speed
Should not be used over land. See Jason-3 User Handbook. A calibration bias of +0.08 dB has been added to the Ku band backscatter coefficient (/data_01/ku/sig0_adaptive) before computing the wind speed Source: SGDR-F Original-Parameter: data_01/wind_speed_alt_adaptive |
| 9 | +1 | - | - | iflags | Instrument Status and Quality Flags
Source: SGDR-F Original-Parameter: data_20/ku/agc, data_01/ku/range_adaptive_numval Flags: 1 : agc in [0,32767] 2 : swh_adaptive in [0,32767] 8: range_adaptive_numval_20hz < 12 128 : range_adaptive == 2147483647 |
invbm.01
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | invb | Inverse Barometer Effect
Named inv_bar_corr in GDR-D standard. Computed at the altimeter time-tag from the interpolation of 2 meteorological fields that surround the altimeter time-tag. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/inv_bar_cor |
ionos.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | ionos | Ionospheric correction
Named iono_corr_alt_ku in GDR-D standard. An ionospheric correction must be added (negative value) to the instrument range to correct this range measurement for ionospheric range delays of the radar pulse. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/ku/iono_cor_alt |
ionos.01
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | ionos | Ionospheric correction
Named iono_corr_gim_ku in GDR-D standard. An ionospheric correction must be added (negative value) to the instrument range to correct this range measurement for ionospheric range delays of the radar pulse. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/ku/iono_cor_gim |
ionos.02
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | ionos | Ionospheric correction
An ionospheric correction must be added (negative value) to the instrument range to correct this range measurement for ionospheric range delays of the radar pulse. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/ku/iono_cor_alt_filtered |
orbit.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | +4 | -6 | deg | glon | Longitude
Named lon_20hz in GDR-D standard. East longitude relative to Greenwich meridian. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_20/longitude |
| 2 | 4 | -6 | deg | glat | Latitude
Named lat_20hz in GDR-D standard. Positive latitude is North latitude, negative latitude is South latitude. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_20/latitude |
| 3 | +4 | -3 | m | hsat | Satellite Altitude
Named alt in GDR-D standard. Altitude of satellite above the reference ellipsoid Source: SGDR-F Original-Parameter: data_20/altitude |
| 4 | +1 | - | - | oflags | Orbit Status and Quality Flags
Source: SGDR-F Original-Parameter: data_01/altitude Flags: 8 : wvf_main_class != 1 16 : surface_classification_flag != 0 128 : altitude == 2147483647 |
tidee.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | etide | Solid Earth Tide Correction
Calculated using Cartwright and Tayler tables and consisting of the second and third degree constituents. The permanent tide (zero frequency) is not included. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/solid_earth_tide |
| 2 | 2 | -3 | m | ptide | Pole Tide Correction
See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/pole_tide |
tropd.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | dtrop | Dry Tropospheric Correction
Named model_dry_tropo_corr in GDR-D standard. Computed at the altimeter time-tag from the interpolation of 2 meteorological fields that surround the altimeter time-tag. A dry tropospheric correction must be added (negative value) to the instrument range to correct this range measurement for dry tropospheric range delays of the radar pulse. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/model_dry_tropo_cor_zero_altitude |
tropw.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | wtrop | Wet Tropospheric Correction
Named rad_wet_tropo_corr in GDR-D standard. A wet tropospheric correction must be added (negative value) to the instrument range to correct this range measurement for wet tropospheric range delays of the radar pulse Source: SGDR-F Original-Parameter: data_01/rad_wet_tropo_cor |
tropw.01
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | 2 | -3 | m | wtrop | Wet Tropospheric Correction
Named model_wet_tropo_corr in GDR-D standard. Computed at the altimeter time-tag from the interpolation of 2 meteorological fields that surround the altimeter time-tag. A wet tropospheric correction must be added (negative value) to the instrument range to correct this range measurement for wet tropospheric range delays of the radar pulse. See Jason-3 User Handbook Source: SGDR-F Original-Parameter: data_01/model_wet_tropo_cor_zero_altitude |
uralt.00
| Pos | Size | Scaling | Unit | Name | Version Specific Description |
|---|---|---|---|---|---|
| 1 | +4 | -3 | m | uralt | Tracker Range
Named tracker_20hz_ku in GDR-D standard. Ku band operating tracker (’Diode+DEM’ or ’Median’ or ’Split-Gate’ tracker). This includes the Distance antenna-COG (/data_01/range_cor_cog), USO drift correction (/data_01/range_cor_uso) and internal path correction (/data_01/ku/range_cor_internal_path). But not the Doppler correction (/data_01/ku/range_cor_doppler), modeled instrumental errors correction (/data_01/ku/range_cor_ocean_model_instr) and system bias Source: SGDR-F Original-Parameter: data_20/ku/tracker_range_calibrated |