Shear probes quality control metrics: Difference between revisions
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Shear-probe data can be corrupted or compromised in several different ways. These include but are not limited to (''i'') collision with plankton and other materials, (''ii'') unremovable vibrational contamination. (''iii'') electronic noise, and (''iv'') interference from other instrumentation on a platform that carries the shear probes. This section describes the quality control metrics and the coding used to [[Quality control coding|identify]] them. Quality-control metrics that are currently identified include; | |||
:* [[figure of merit (FOM)]] | |||
:* [[fraction of shear-probe data altered by the de-spiking routine]] | |||
:* number of [[iterations]] of the de-spiking routine required to clean the data | |||
:* [[agreement between dissipation estimates]] from redundant sensors (i.e. two or more shear probes) | |||
The numerical threshold for these metrics should depend, as much as possible, on the known statistical properties of a turbulence shear measurement. The numerical values of the QC codes (or flags) is found in [[Quality control coding|QC-flags]]. | |||
Please note that most choices made must be included in a data set, as described in the [[Netcdf meta data (shear probes)|list of meta data]]. | |||
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return to [[Flow chart for shear probes]] | return to [[Flow chart for shear probes]] | ||
[[Category:Shear probes]] | |||
Latest revision as of 18:21, 6 June 2024
Shear-probe data can be corrupted or compromised in several different ways. These include but are not limited to (i) collision with plankton and other materials, (ii) unremovable vibrational contamination. (iii) electronic noise, and (iv) interference from other instrumentation on a platform that carries the shear probes. This section describes the quality control metrics and the coding used to identify them. Quality-control metrics that are currently identified include;
- figure of merit (FOM)
- fraction of shear-probe data altered by the de-spiking routine
- number of iterations of the de-spiking routine required to clean the data
- agreement between dissipation estimates from redundant sensors (i.e. two or more shear probes)
The numerical threshold for these metrics should depend, as much as possible, on the known statistical properties of a turbulence shear measurement. The numerical values of the QC codes (or flags) is found in QC-flags.
Please note that most choices made must be included in a data set, as described in the list of meta data.
return to Flow chart for shear probes
