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===Dissipation=== | ===Dissipation=== | ||
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The absolute minimum signals and information required to estimate the rate of dissipation of kinetic energy consists of:
The sampling rate of the shear-probe signal should exceed significantly (by a factor of 2 to 4) the value of 150U, where U is the speed of the flow past the shear-probe. This speed is often called the speed of profiling, even when the probe is fixed in space and the current causes fluid to flow past the shear probe. The value of 150 cpm equals the spatial resolution of the commonly used shear probe.
A far more desirable, but not absolutely necessary, set of data consists of the following.
Most commonly available instruments carry two shear probes that are frequently oriented so that they measure orthogonal components of the shear and, thus, provide two independent estimates of the rate of dissipation that you should agree statistically.
For sharing a data set, we recommend providing four processing levels of data in a single netCDF file per instrument file. The processing levels include
The data format recommended is summarized in standard dimensions and should include necessary meta data. ATOMIX provides several benchmark data sets following these guidelines.
This section provides an overview of the NetCDF format of benchmark dataset for instruments that measure microstructure shear.
Example of collapsible list
Example of collapsible table
| Short name | Standard name |
|---|---|
| TIME | days since 1950-01-01 00:00:00 UTC |
| n_shear_sensors | number of shear channel |
| Short name | Standard name |
|---|---|
| Content | Goes |
| In Here | Please |
| Parameter Name | Standard Name | Units of measurement | dimension | |
|---|---|---|---|---|
| PRES | sea_water_pressure water_pressure |
dbar | TIME | 1,2 |
| TIME | time | days since 1950-01-01 00:00:00 UTC | TIME | 1 |
| SHEAR | water_velocity_shear | s-1 | [TIME, n_shear_sensors] | 1 |
| Parameter Name | Standard Name | Units of measurement | dimension |
|---|---|---|---|
| VIB | platform_vibration | NA | [TIME, n_vibration_sensors] |
| ACC | platform_acceleration | m s-2 | [TIME, n_acc_sensors] |
| TEMP | sea_water_temperature (water_temperature) |
degree_Celsius | [TIME,n_T_sensors] |
| CNCD | sea_water_electrical_conductivity (water_electrical_conductivity) |
S m-1 | [TIME_FAST,n_C_sensors] |
| GRADT | temperature_gradient | [TIME, n_gradT_sensors] | |
| GRADC | conductivity_gradient | [TIME, n_gradC_sensors] | |
| PITCH | platform_pitch_angle | degree | [TIME] |
| ROLL | platform_roll_angle | degree | [TIME] |
Insert info here in the same format as Raw
return to Shear probes
