Level 4 data (velocity profilers) - Revision history

Brian scannell at 14:04, 11 July 2022

2022-07-11T14:04:29Z

← Older revision		Revision as of 14:04, 11 July 2022
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	\| specific_turbulent_kinetic_energy_dissipation_in_sea_water_error_ratio		\| specific_turbulent_kinetic_energy_dissipation_in_sea_water_error_ratio
	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| Ratio of the uncertainty, <math>\delta\varepsilon</math> to the value of <math>\varepsilon</math>. Computed from the confidence intervals as <math>\frac{\delta\varepsilon}{\epsilon} = \frac{3\ (\text{~~EPSI_CI_HIGH~~}\ -\ \text{~~EPSI_CI_LOW~~})}{4\ \text{REGRESSION_COEFF_A1}}</math> {{FontColor\|fg=red\|text=Link to derivation}}		\| Ratio of the uncertainty, <math>\delta\varepsilon</math> to the value of <math>\varepsilon</math>. Computed from the confidence intervals as <math>\frac{\delta\varepsilon}{\epsilon} = \frac{3\ (\text{SLOPE_CI_HIGH}\ -\ \text{SLOPE_CI_LOW})}{4\ \text{REGRESSION_COEFF_A1}}</math> {{FontColor\|fg=red\|text=Link to derivation}}
	\|-		\|-
	\| R_MAX		\| R_MAX

Brian scannell at 14:02, 11 July 2022

2022-07-11T14:02:31Z

← Older revision		Revision as of 14:02, 11 July 2022
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	\| specific_turbulent_kinetic_energy_dissipation_in_sea_water_error_ratio		\| specific_turbulent_kinetic_energy_dissipation_in_sea_water_error_ratio
	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| Ratio of the uncertainty, <math>\delta\varepsilon</math> to the value of <math>\varepsilon</math>. Computed from the confidence intervals as <math>\frac{\delta\varepsilon}{\epsilon} = \frac{3\ (\text{EPSI_CI_HIGH}\ -\ \text{EPSI_CI_LOW})}{4\ \text{~~REGRESSION_COEFF_A0~~}}</math> {{FontColor\|fg=red\|text=Link to derivation}}		\| Ratio of the uncertainty, <math>\delta\varepsilon</math> to the value of <math>\varepsilon</math>. Computed from the confidence intervals as <math>\frac{\delta\varepsilon}{\epsilon} = \frac{3\ (\text{EPSI_CI_HIGH}\ -\ \text{EPSI_CI_LOW})}{4\ \text{REGRESSION_COEFF_A1}}</math> {{FontColor\|fg=red\|text=Link to derivation}}
	\|-		\|-
	\| R_MAX		\| R_MAX

Jmmcmillan: Added EPSI_DEL_RATIO as a variable since it should be included in datafiles at this stage in the testing

2022-07-08T22:29:30Z

Added EPSI_DEL_RATIO as a variable since it should be included in datafiles at this stage in the testing

← Older revision		Revision as of 22:29, 8 July 2022
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	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| Computed from the confidence interval of the regression slope as EPSI_CI_HIGH = (SLOPE_CI_HIGH/C2)^(3/2) {{FontColor\|fg=red\|text=To be verified.}}		\| Computed from the confidence interval of the regression slope as EPSI_CI_HIGH = (SLOPE_CI_HIGH/C2)^(3/2) {{FontColor\|fg=red\|text=To be verified.}}
			\|-
			\| EPSI_DEL_RATIO
			\| specific_turbulent_kinetic_energy_dissipation_in_sea_water_error_ratio
			\| TIME, Z_DIST, N_BEAM
			\| Ratio of the uncertainty, <math>\delta\varepsilon</math> to the value of <math>\varepsilon</math>. Computed from the confidence intervals as <math>\frac{\delta\varepsilon}{\epsilon} = \frac{3\ (\text{EPSI_CI_HIGH}\ -\ \text{EPSI_CI_LOW})}{4\ \text{REGRESSION_COEFF_A0}}</math> {{FontColor\|fg=red\|text=Link to derivation}}
	\|-		\|-
	\| R_MAX		\| R_MAX

Jmmcmillan: Added EPSI_FINAL_method attribute

2022-07-08T14:19:25Z

Added EPSI_FINAL_method attribute

← Older revision		Revision as of 14:19, 8 July 2022
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	\| Examples include:		\| Examples include:
	Least-squares using evaluated separation distances to r_max.		Least-squares using evaluated separation distances to r_max.
			\|-
			\| EPSI_FINAL_method
			\| method used to calculate EPSI_FINAL from EPSI
			\| Examples include:
			arithmetic mean across beams of resolved EPSI after all EPSI_FLAGS applied.
	\|-		\|-
	\| rsquared_method		\| rsquared_method

Jmmcmillan: Updated attributes to represent those that are being used in the test datasets

2022-07-08T14:08:25Z

Updated attributes to represent those that are being used in the test datasets

← Older revision		Revision as of 14:08, 8 July 2022
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	\| <blockquote>''This group includes the results associated with fitting the structure function to data in level 3. The results for each beam, along with quality indicators and errors are provided. A final estimate for the turbulent kinetic energy dissipation is also provided.''</blockquote>		\| <blockquote>''This group includes the results associated with fitting the structure function to data in level 3. The results for each beam, along with quality indicators and errors are provided. A final estimate for the turbulent kinetic energy dissipation is also provided.''</blockquote>
	\|-		\|-
	\| ~~dll_fitting_method~~		\| regression_model
	\| ~~statistical technique used for fitting~~ the ~~spectra.~~		\| model regressed against the data to determine <math>\varepsilon</math>
	\| Examples include:		\| Examples include:
	~~linear regression~~		standard model, i.e. <math>D_{ll} = a_0 + a_1 (\delta r)^{2/3}</math> <br /><br />
			modified model, i.e. <math>D_{ll} = a_0 + a_1 (\delta r)^{2/3}+a_3((\delta r)^{2/3})^3 </math>
			\|-
			\| regression_method
			\| method used to regress the model against the data
			\| Examples include:
			Least-squares using evaluated separation distances to r_max.
	\|-		\|-
	\| rsquared_method		\| rsquared_method

Brian scannell: Corrected units for REGRESSION_COEFF_A3

2022-06-13T11:55:34Z

Corrected units for REGRESSION_COEFF_A3

← Older revision		Revision as of 11:55, 13 June 2022
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	\|structure_function_regression_coefficient for_(r^2/3)^3		\|structure_function_regression_coefficient for_(r^2/3)^3
	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| Linear term in regression for modified method, i.e. <math>A_1</math> in <math>D_{LL} = A_3 r^2 + A_1 r^{2/3} + A_0</math>. Units are ~~m<math>^{4/3}</math>~~s<math>^{-2}</math>		\| Linear term in regression for modified method, i.e. <math>A_1</math> in <math>D_{LL} = A_3 r^2 + A_1 r^{2/3} + A_0</math>. Units are s<math>^{-2}</math>
	\|}		\|}
	</div>		</div>

Yuengdjern at 10:45, 4 June 2022

2022-06-04T10:45:36Z

← Older revision		Revision as of 10:45, 4 June 2022
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	in_sea_water_status_flag		in_sea_water_status_flag
	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| For details see [[Velocity ~~Profilers~~ data flags \| Velocity ~~Profilers~~ data flags]]		\| For details see [[Velocity Profiler data flags \| Velocity Profiler data flags]]
	\|-		\|-
	\| EPSI_CI_HIGH		\| EPSI_CI_HIGH

Yuengdjern at 10:41, 4 June 2022

2022-06-04T10:41:56Z

← Older revision		Revision as of 10:41, 4 June 2022
Line 68:		Line 68:
	in_sea_water_status_flag		in_sea_water_status_flag
	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| For details see [[Velocity Profilers ~~dat~~ flags \| Velocity Profilers data flags]]		\| For details see [[Velocity Profilers data flags \| Velocity Profilers data flags]]
	\|-		\|-
	\| EPSI_CI_HIGH		\| EPSI_CI_HIGH

Yuengdjern at 10:38, 4 June 2022

2022-06-04T10:38:40Z

← Older revision		Revision as of 10:38, 4 June 2022
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	\| structure_function_regression_intercept		\| structure_function_regression_intercept
	\| TIME, Z_DIST, N_BEAM		\| TIME, Z_DIST, N_BEAM
	\| Constant term in regression, i.e. <math>A_0</math> in <math>D_{LL} = A_1 r^{2/3} + A_0</math>. Units are m<math>^2</math>s<math>^{-2}</math> and value is proportional to instrument noise. ~~{{FontColor~~\|~~fg=red\|text=Provide link.}}~~		\| Constant term in regression, i.e. <math>A_0</math> in <math>D_{LL} = A_1 r^{2/3} + A_0</math>. Units are m<math>^2</math>s<math>^{-2}</math> and value is proportional to instrument noise. (see [[Processing your ADCP data using structure function techniques \| Compute structure functions and dissipation estimates]])
	\|-		\|-
	\| REGRESSION_COEFF_A1		\| REGRESSION_COEFF_A1

Yuengdjern at 10:35, 4 June 2022

2022-06-04T10:35:30Z

← Older revision		Revision as of 10:35, 4 June 2022
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	\| constant_used_in_the_second_order_structure_function		\| constant_used_in_the_second_order_structure_function
	\| Scalar [1 value]		\| Scalar [1 value]
	\| This constant appears when estimating the dissipation rate of turbulent kinetic energy from the regression coefficients. ~~{{FontColor\|fg=white\|bg=red\|text=provide link to equation}}~~		\| This constant appears when estimating the dissipation rate of turbulent kinetic energy from the regression coefficients (see [[Processing your ADCP data using structure function techniques \| Compute structure functions and dissipation estimates]]).
	\|-		\|-
	\| colspan="4" style="text-align:center; font-weight:bold; background-color:#f9eddd"\| Quality-control metrics		\| colspan="4" style="text-align:center; font-weight:bold; background-color:#f9eddd"\| Quality-control metrics