Recordmaps by Mission

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

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