| id | field name | definition |
|---|
| 0 | mdsr_time |
| binary time | size: 12 |
|---|
Data record time (MDSR time stamp)
unit: "s since 2000-01-01"
value: float(./days) * 86400 + float(./seconds) + float(./microseconds) / 1000000
| binary record | size: 12 |
|---|
ENVISAT binary datetime
| id | field name | definition |
|---|
| 0 | days |
| binary int32 | size: 4 |
|---|
days since January 1st, 2000 (may be negative)
unit: "days since 2000-01-01"
|
|
| 1 | seconds |
| binary uint32 | size: 4 |
|---|
seconds since start of day
unit: "s"
|
|
| 2 | microseconds |
| binary uint32 | size: 4 |
|---|
microseconds since start of second
unit: "1e-6 s"
|
|
|
|
|
| 1 | tai_utc_diff |
| binary int16 | size: 2 |
|---|
TAI - UTC Difference
unit: "s"
|
|
| 2 | spare_1 |
| binary bytes | size: 2 |
|---|
|
Spares
|
hidden: true
|
| 3 | time_diff |
| binary array[20] | size: 80 |
|---|
20 Hz Time differences
| binary int32 | size: 4 |
|---|
|
unit: "1e-6 s"
|
|
|
| 4 | tai_utc_diff_20hz |
| binary array[20] | size: 40 |
|---|
TAI - UTC differences
| binary int16 | size: 2 |
|---|
|
unit: "s"
|
|
|
| 5 | rec_count |
| binary uint32 | size: 4 |
|---|
|
Record counter
|
|
| 6 | lat |
| binary int32 (double) | size: 4 |
|---|
Latitude of measurement
unit: "1e-7 degrees_north"
converted unit: "degrees_north" (multiply by 1/10000000)
|
|
| 7 | lat_20hz |
| binary array[20] | size: 80 |
|---|
20 Hz Latitude of measurement
| binary int32 (double) | size: 4 |
|---|
unit: "1e-7 degrees_north"
converted unit: "degrees_north" (multiply by 1/10000000)
|
|
|
| 8 | lon |
| binary int32 (double) | size: 4 |
|---|
Longitude of the measurement
unit: "1e-7 degrees_east"
converted unit: "degrees_east" (multiply by 1/10000000)
|
|
| 9 | lon_20hz |
| binary array[20] | size: 80 |
|---|
20 Hz Longitude of measurement
| binary int32 (double) | size: 4 |
|---|
unit: "1e-7 degrees_east"
converted unit: "degrees_east" (multiply by 1/10000000)
|
|
|
| 10 | alt_cog_ref_ellip |
| binary int32 | size: 4 |
|---|
Altitude of CoG above reference ellipsoid
unit: "mm"
|
|
| 11 | alt_cog_ref_ellip_20hz |
| binary array[20] | size: 80 |
|---|
20 Hz Altitude of CoG above reference ellipsoid
| binary int32 | size: 4 |
|---|
|
unit: "mm"
|
|
|
| 12 | inst_alt_rate |
| binary int32 | size: 4 |
|---|
Instantaneous altitude rate derived from orbit
unit: "mm/s"
|
|
| 13 | meas_conf_flags |
| binary array[20] | size: 80 |
|---|
20 Hz Level 2 Measurement Confidence Data
|
|
| 14 | spare_2 |
| binary bytes | size: 2 |
|---|
|
padding
|
hidden: true
|
| 15 | peakiness |
| binary int16 (double) | size: 2 |
|---|
Peakiness
converted unit: "" (multiply by 1/100)
|
|
| 16 | peakiness_20hz |
| binary array[20] | size: 40 |
|---|
20 Hz peakiness
| binary int16 (double) | size: 2 |
|---|
|
converted unit: "" (multiply by 1/100)
|
|
|
| 17 | ocean_retracking_mqe_20hz |
| binary array[20] | size: 40 |
|---|
20 Hz Mean Quadratic Error from ocean retracking
| binary int16 (double) | size: 2 |
|---|
|
converted unit: "" (multiply by 1/10000)
|
|
|
| 18 | ocean_retracking_quality |
| binary uint32 | size: 4 |
|---|
|
Ocean retracking quality (20 bits)
|
|
| 19 | spare_3 |
| binary bytes | size: 4 |
|---|
|
padding
|
hidden: true
|
| 20 | ocean_range |
| binary uint32 | size: 4 |
|---|
Ocean range to ocean surface (corrected). Corrected for: (USO drift, antenna-COG distance, internal calibration (CAL1), doppler correction, modeled instrumental correction, system bias)
unit: "mm"
|
|
| 21 | ocean_range_20hz |
| binary array[20] | size: 80 |
|---|
20-Hz ocean range (corrected). Corrected for: (USO drift, antenna-COG distance, internal calibration (CAL1), doppler correction, modeled instrumental correction, system bias)
| binary uint32 | size: 4 |
|---|
|
unit: "mm"
|
|
|
| 22 | ocean_range_20hz_std |
| binary uint16 | size: 2 |
|---|
Standard deviation of 20Hz ocean range
unit: "mm"
|
|
| 23 | num_valid_ocean_range_20hz |
| binary uint16 | size: 2 |
|---|
|
Number of 20Hz valid points for ocean range
|
|
| 24 | ocean_range_av_status |
| binary uint32 | size: 4 |
|---|
|
Ocean range averaging status flags. First 20 least significant bits (0-19) correspond to the 20 values (one per data block) containing : 0=valid measurement, 1=invalid. Bit 0 applies to the first data block. Unused bits are set to 0.
|
|
| 25 | ice_range |
| binary uint32 | size: 4 |
|---|
Ice range to ocean surface (corrected). Corrected for: (USO drift, antenna-COG distance, internal calibration (CAL1), doppler correction, system bias)
unit: "mm"
|
|
| 26 | ice_range_20hz |
| binary array[20] | size: 80 |
|---|
20-Hz ice range (corrected). Corrected for: (USO drift, antenna-COG distance, internal calibration (CAL1), doppler correction, system bias)
| binary uint32 | size: 4 |
|---|
|
unit: "mm"
|
|
|
| 27 | ice_range_20hz_std |
| binary uint16 | size: 2 |
|---|
Standard deviation of 20Hz ice range
unit: "mm"
|
|
| 28 | num_valid_ice_range_20hz |
| binary uint16 | size: 2 |
|---|
|
Number of 20Hz valid points for ice range
|
|
| 29 | ice_range_av_status |
| binary uint32 | size: 4 |
|---|
|
Ocean range averaging status flags. First 20 least significant bits (0-19) correspond to the 20 values (one per data block) containing : 0=valid measurement, 1=invalid. Bit 0 applies to the first data block. Unused bits are set to 0.
|
|
| 30 | dopp_corr |
| binary int16 | size: 2 |
|---|
Doppler correction
unit: "mm"
|
|
| 31 | uso_corr |
| binary int16 | size: 2 |
|---|
USO drift correction
unit: "mm"
|
|
| 32 | ant_cog_dist |
| binary int16 | size: 2 |
|---|
Distance antenna - COG
unit: "mm"
|
|
| 33 | range_icc |
| binary int16 | size: 2 |
|---|
Range internal calibration correction (CAL1)
unit: "mm"
|
|
| 34 | range_mic |
| binary int16 | size: 2 |
|---|
Range modeled instrumental correction (ocean table)
unit: "mm"
|
|
| 35 | dry_tropo_corr |
| binary int16 | size: 2 |
|---|
Dry tropospheric correction
unit: "mm"
|
|
| 36 | wet_tropo_corr |
| binary int16 | size: 2 |
|---|
Wet tropospheric correction
unit: "mm"
|
|
| 37 | inv_barom_corr |
| binary int16 | size: 2 |
|---|
Inverse barometric correction
unit: "mm"
|
|
| 38 | dyn_atm_corr |
| binary int16 | size: 2 |
|---|
Dynamic atmospheric correction
unit: "mm"
|
|
| 39 | ion_corr_gim |
| binary int16 | size: 2 |
|---|
GIM ionospheric correction
unit: "mm"
|
|
| 40 | sea_state_bias_corr |
| binary int16 | size: 2 |
|---|
Sea State Bias correction (EM bias)
unit: "mm"
|
|
| 41 | spare_4 |
| binary bytes | size: 6 |
|---|
|
padding
|
hidden: true
|
| 42 | swh_squared |
| binary int32 | size: 4 |
|---|
Square of Significant Wave Height
unit: "mm2"
|
|
| 43 | swh |
| binary int16 | size: 2 |
|---|
Significant Wave Height
unit: "mm"
|
|
| 44 | spare_5 |
| binary bytes | size: 2 |
|---|
|
spare
|
hidden: true
|
| 45 | swh_20hz |
| binary array[20] | size: 40 |
|---|
20 Hz Significant wave height (corrected). Corrected for: modeled instrumental correction, system bias
| binary int16 | size: 2 |
|---|
|
unit: "mm"
|
|
|
| 46 | swh_20hz_std |
| binary uint16 | size: 2 |
|---|
Standard deviation of 20Hz Significant wave height
unit: "mm"
|
|
| 47 | num_valid_swh_20hz |
| binary uint16 | size: 2 |
|---|
|
Number of 20Hz valid points for Square of Significant wave height
|
|
| 48 | swh_avg_status |
| binary uint32 | size: 4 |
|---|
|
SWH averaging status flags. First 20 least significant bits (0-19) correspond to the 20 values (one per data block) containing : 0=valid measurement, 1=invalid. Bit 0 applies to the first data block. Unused bits are set to 0.
|
|
| 49 | spare_6 |
| binary bytes | size: 2 |
|---|
|
spare
|
hidden: true
|
| 50 | ocean_bkscat |
| binary int16 (double) | size: 2 |
|---|
Ocean backscatter coefficient (corrected). Corrected for : AGC correction, internal calibration (CAL1), modeled instrumental correction, system bias. Not corrected for atmospheric attenuation
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 51 | ocean_bkscat_20hz |
| binary array[20] | size: 40 |
|---|
20 Hz Corrected ocean backscatter coefficient (corrected). Corrected for: AGC correction, internal calibration (CAL1), modeled instrumental correction, system bias. Not corrected for atmospheric attenuation
| binary int16 (double) | size: 2 |
|---|
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
|
| 52 | ocean_bkscat_20hz_std |
| binary uint16 (double) | size: 2 |
|---|
Standard deviation of 20Hz corrected ocean backscatter coefficient
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 53 | num_valid_ocean_bkscat_20hz |
| binary uint16 | size: 2 |
|---|
|
Number of 20Hz valid points for corrected ocean backscatter coefficient
|
|
| 54 | ocean_bkscat_avg_status |
| binary uint32 | size: 4 |
|---|
|
Ocean backscatter averaging status flags
|
|
| 55 | spare_7 |
| binary bytes | size: 2 |
|---|
|
spare
|
hidden: true
|
| 56 | ice_bkscat |
| binary int16 (double) | size: 2 |
|---|
Ice backscatter coefficient (corrected). Corrected for : AGC correction, internal calibration (CAL1), system bias. Not corrected for atmospheric attenuation
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 57 | ice_bkscat_20hz |
| binary array[20] | size: 40 |
|---|
20 Hz Corrected ice backscatter coefficient (corrected). Corrected for: AGC correction, internal calibration (CAL1), system bias. Not corrected for atmospheric attenuation
| binary int16 (double) | size: 2 |
|---|
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
|
| 58 | ice_bkscat_20hz_std |
| binary uint16 (double) | size: 2 |
|---|
Standard deviation of 20Hz corrected ice backscatter coefficient
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 59 | num_valid_ice_bkscat_20hz |
| binary uint16 | size: 2 |
|---|
|
Number of 20Hz valid points for corrected ice backscatter coefficient
|
|
| 60 | ice_bkscat_avg_status |
| binary uint32 | size: 4 |
|---|
|
Ice backscatter averaging status flags
|
|
| 61 | off_nadir_angle_squared |
| binary int32 (double) | size: 4 |
|---|
Square of the off nadir angle of the satellite from waveforms
unit: "1e-4 degrees2"
converted unit: "degrees" (multiply by 1/10000)
|
|
| 62 | spare_8 |
| binary bytes | size: 6 |
|---|
|
spare
|
hidden: true
|
| 63 | agc |
| binary int16 (double) | size: 2 |
|---|
AGC (corrected)
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 64 | bkscat_scl_fact |
| binary array[20] | size: 80 |
|---|
Scaling factor for backscatter coefficient evaluation (corrected). Corrected for: AGC errors and internal calibration (CAL1)
| binary int32 (double) | size: 4 |
|---|
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
|
| 65 | swh_mic |
| binary int16 | size: 2 |
|---|
SWH modeled instrumental correction (ocean table)
unit: "mm"
|
|
| 66 | agc_corr |
| binary int16 (double) | size: 2 |
|---|
AGC correction
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 67 | sigma0_icc |
| binary int16 (double) | size: 2 |
|---|
Sigma0 internal calibration correction (CAL1)
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 68 | backscat_mic |
| binary int16 (double) | size: 2 |
|---|
Backscatter coefficient modeled instrumental correction (Ocean table)
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 69 | atm_attn |
| binary int16 (double) | size: 2 |
|---|
Atmospheric attenuation
unit: "1e-2 dB"
converted unit: "dB" (multiply by 1/100)
|
|
| 70 | spare_9 |
| binary bytes | size: 6 |
|---|
|
spare
|
hidden: true
|
| 71 | mss_1 |
| binary int32 | size: 4 |
|---|
Mean Sea Surface height (Solution 1)
unit: "mm"
|
|
| 72 | mss_2 |
| binary int32 | size: 4 |
|---|
Mean Sea Surface height (Solution 2)
unit: "mm"
|
|
| 73 | geoid_height |
| binary int32 | size: 4 |
|---|
Geoid height
unit: "mm"
|
|
| 74 | odle |
| binary int32 | size: 4 |
|---|
Ocean Depth/Land Elevation (ODLE)
unit: "mm"
|
|
| 75 | mdt |
| binary int32 | size: 4 |
|---|
Mean Dynamic Topography height
unit: "mm"
|
|
| 76 | spare_10 |
| binary bytes | size: 8 |
|---|
|
spare
|
hidden: true
|
| 77 | ocean_tide_got |
| binary int16 | size: 2 |
|---|
Total geocentric ocean tide height (Solution 1: GOT)
unit: "mm"
|
|
| 78 | ocean_tide_fes |
| binary int16 | size: 2 |
|---|
Total geocentric ocean tide height (Solution 2: FES)
unit: "mm"
|
|
| 79 | lp_ocean_tide |
| binary int16 | size: 2 |
|---|
Long Period Tide Height
unit: "mm"
|
|
| 80 | nelp_ocean_tide |
| binary int16 | size: 2 |
|---|
Non equilibrium long period ocean tide height
unit: "mm"
|
|
| 81 | ocean_load_tide_got |
| binary int16 | size: 2 |
|---|
Ocean loading tide (Solution 1: GOT)
unit: "mm"
|
|
| 82 | ocean_load_tide_fes |
| binary int16 | size: 2 |
|---|
Ocean loading tide (Solution 2: FES)
unit: "mm"
|
|
| 83 | sol_earth_tide |
| binary int16 | size: 2 |
|---|
Solid earth tide
unit: "mm"
|
|
| 84 | geocen_pol_tide |
| binary int16 | size: 2 |
|---|
Geocentric polar tide
unit: "mm"
|
|
| 85 | spare_11 |
| binary bytes | size: 6 |
|---|
|
spare
|
hidden: true
|
| 86 | wind_speed |
| binary int16 | size: 2 |
|---|
Altimeter wind speed
unit: "mm/s"
|
|
| 87 | wind_u |
| binary int16 | size: 2 |
|---|
U-component of the wind vector
unit: "mm/s"
|
|
| 88 | wind_v |
| binary int16 | size: 2 |
|---|
V-component of the wind vector
unit: "mm/s"
|
|
| 89 | surf_type |
| binary uint16 | size: 2 |
|---|
|
Surface type flag (0 = open ocean, 1 = enclosed sea, 2 = continental ice, 3 = land)
|
|
| 90 | spare_12 |
| binary bytes | size: 2 |
|---|
|
spare
|
hidden: true
|