Level 3 data (shear probes): Difference between revisions
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Level 3 data contains the raw and cleaned [[Spectrum|spectra]] derived from level 2 data. Level 3 parameters are defined along a new time [[Netcdf dimensions (shear probe)|dimension]], TIME_SPECTRA, which is the average time of the individual spectral segments. The length of the TIME_SPECTRA dimension equals the number of spectral segments. Parameter for the calculation of the spectra, e.g. segment length, are provided in the [[Netcdf meta data (shear probes)|meta data]]. We repeated level 1 and 2 parameters as average over the segment length. | Level 3 data contains the raw and cleaned [[Spectrum|spectra]] derived from level 2 data. Level 3 parameters are defined along a new time [[Netcdf dimensions (shear probe)|dimension]], TIME_SPECTRA, which is the average time of the individual spectral segments. The length of the TIME_SPECTRA dimension equals the number of spectral segments. Parameter for the calculation of the spectra, e.g. segment length, are provided in the [[Netcdf meta data (shear probes)|meta data]]. We repeated level 1 and 2 parameters as average over the segment length. | ||
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! Parameter Name !! CF parameter !! Standard Name !! Units of measurement !! dimension !! Comment | ! Parameter Name !! CF parameter !! Standard Name !! Units of measurement !! dimension !! Comment | ||
Revision as of 17:35, 4 November 2021
Level 3 data (shear probes)
Level 3 data contains the raw and cleaned spectra derived from level 2 data. Level 3 parameters are defined along a new time dimension, TIME_SPECTRA, which is the average time of the individual spectral segments. The length of the TIME_SPECTRA dimension equals the number of spectral segments. Parameter for the calculation of the spectra, e.g. segment length, are provided in the meta data. We repeated level 1 and 2 parameters as average over the segment length.
| Parameter Name | CF parameter | Standard Name | Units of measurement | dimension | Comment |
|---|---|---|---|---|---|
| FLOWPS | 0 | flow_past_sensor | m s-1 | TIME_SPECTRA | |
| PRES | 1 0 |
sea_water_pressure water_pressure |
dbar | TIME_SPECTRA | |
| TIME | 1 | time | days since 1950-01-01 00:00:00 UTC | TIME_SPECTRA | |
| TEMP | 1 0 |
sea_water_temperature water_temperature |
degree_Celsius | TIME_SPECTRA | |
| SECTION_NUMBER | 0 | dimensionless | TIME_SPECTRA | ||
| SH_SPEC | shear_probe_spectrum | s-2 cpm-1 | [TIME_SPECTRA, WAVENUMBER, n_shear_sensors] | from shear probes (dirty) | |
| SH_SPEC_CLEAN | shear_probe_spectrum_clean | s-2 cpm-1 | [TIME_SPECTRA, WAVENUMBER, n_shear_sensors] | cleaned using Goodman algorithm | |
| A_SPEC | acceleration_sensor_spectrum | m2 s-4 cpm-1 | [TIME_SPECTRA, WAVENUMBER, n_acc_sensors] | ||
| AP_SPEC | vibration_sensor_spectrum | NA | [TIME_SPECTRA, WAVENUMBER, n_vibration_sensors] | ||
| SH_A_SPEC | Complex cross-spectral matrix of shear and acceleration | [TIME_SPECTRA, WAVENUMBER, ???] | |||
| SH_AP_SPEC | Complex cross-spectral matrix of shear and vibrations | [TIME_SPECTRA, WAVENUMBER, ???] | |||
| KCYC | Cyclic wavenumber | cpm | WAVENUMBER | ||
| KMAX | maximum_wavenumber | cpm | TIME_SPEC | maximum wavenumber for integration of shear spectrum |
