Level 3 data (shear probes)
From Atomix
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, which is the average time of the individual spectral segments. The length of the TIME dimension equals the number of spectral segments. Parameter for the calculation of the spectra, e.g. segment length, are provided in the meta data.
| Parameter Name | Standard Name | Units of measurement | dimension | Comment |
|---|---|---|---|---|
| FLOWPS | flow_past_sensor | m s-1 | TIME | |
| PRES | water_pressure | dbar | TIME | |
| TIME | time | days since 1950-01-01 00:00:00 UTC | TIME | |
| TEMP | water_temperature | degree_Celsius | TIME | |
| SECTION_NUMBER | dimensionless | TIME | ||
| SH_SPEC | shear_probe_spectrum | s-2 cpm-1 | [TIME, WAVENUMBER, N_SHEAR_SENSORS] | from shear probes (dirty) |
| SH_SPEC_CLEAN | shear_probe_spectrum_clean | s-2 cpm-1 | [TIME, WAVENUMBER, N_SHEAR_SENSORS] | cleaned using Goodman algorithm |
| A_SPEC | acceleration_sensor_spectrum | m2 s-4 cpm-1 | [TIME, WAVENUMBER, N_ACCEL_SENSORS] | |
| AP_SPEC | vibration_sensor_spectrum | NA | [TIME, WAVENUMBER, N_VIB_SENSORS] | |
| SH_A_SPEC | Complex cross-spectral matrix of shear and acceleration | [TIME, WAVENUMBER, N_ACCEL_SENSORS*N_SHEAR_SENSORS] | ||
| SH_AP_SPEC | Complex cross-spectral matrix of shear and vibrations | [TIME, WAVENUMBER, N_ACCEL_SENSORS*N_SHEAR_SENSORS] | ||
| KCYC | Cyclic wavenumber | cpm | WAVENUMBER | |
| KMAX | maximum_wavenumber | cpm | TIME | maximum wavenumber for integration of shear spectrum |
