Level 1 data (velocity point-measurements) - Revision history

CynthiaBluteau: Burst links

2022-03-08T19:18:59Z

Burst links

← Older revision		Revision as of 19:18, 8 March 2022
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	The required dimensions and variables for the first processing level within NetCDF ATOMIX format for velocity measurements are described below. This processing level contains the raw measurements recorded by the instrument. If sampling is in burst mode, the measurements from individual bursts are appended together.		The required dimensions and variables for the first processing level within NetCDF ATOMIX format for velocity measurements are described below. This processing level contains the raw measurements recorded by the instrument. If sampling is in [[Burst sampling\|burst mode]], the measurements from individual [[Burst sampling\|bursts]] are appended together.

	Only a few attributes for each variable are listed since the page's purpose is to describe the information layout within each NetCDF file. Please refer to the {{FontColor\|bg=#fca1fd\|text= [[NetCDF_parameter\|complete list]]}} for the additional attributes related to each variable (e.g., units, bounds, cell_methods).		Only a few attributes for each variable are listed since the page's purpose is to describe the information layout within each NetCDF file. Please refer to the {{FontColor\|bg=#fca1fd\|text= [[NetCDF_parameter\|complete list]]}} for the additional attributes related to each variable (e.g., units, bounds, cell_methods).
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	\| unique_identifier_for_each_burst		\| unique_identifier_for_each_burst
	\| TIME		\| TIME
	\| Integers of 1, 2, etc to designate which burst the velocities are associated with.		\| Integers of 1, 2, etc to designate which [[Burst sampling\|burst]] the velocities are associated with.
	\|-		\|-
	\| colspan="4" style="text-align:center; font-weight:bold; background-color:#f9eddd" \| '''Platform motion variables'''		\| colspan="4" style="text-align:center; font-weight:bold; background-color:#f9eddd" \| '''Platform motion variables'''
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	<math>\dagger</math>A variable situating the instruments in the water column is required. This may be a nominal depth (or height) or a time-varying depth or height above the bottom.		<math>\dagger</math>A variable situating the instruments in the water column is required. This may be a nominal depth (or height) or a time-varying depth or height above the bottom.

	<math>\dagger\dagger</math> Variable required only when measuring in bursts e.g., 18 min of continuous measurements every hour.		<math>\dagger\dagger</math> Variable required only when measuring in [[Burst sampling\|bursts]] e.g., 18 min of continuous measurements every hour.
	\|}		\|}

CynthiaBluteau: /* Group attributes (metadata) */

2022-02-21T18:44:29Z

Group attributes (metadata)

← Older revision		Revision as of 18:44, 21 February 2022
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	\| Boilerplate about the ATOMIX Level 1 content.		\| Boilerplate about the ATOMIX Level 1 content.
	\| <blockquote>''This group includes the raw measurements from the recorder and ancillary measurements required for quality-controlling them using the manufacturer's recommendations.''</blockquote>		\| <blockquote>''This group includes the raw measurements from the recorder and ancillary measurements required for quality-controlling them using the manufacturer's recommendations.''</blockquote>
			\|-
			\| despiking_method
			\| Specify which despiking technique (if any) was applied to the dataset. Include citation if possible.
			\| <blockquote>''Velocities were despiked using Goring Nikora phase-space thresholding technique applied on [[Detrended time series\|detrended timeseries]]. Time series were detrended using XX technique.''</blockquote>
	\|-		\|-
	\| comment (optional)		\| comment (optional)

CynthiaBluteau: /* Required variables */

2022-01-17T16:20:50Z

Required variables

← Older revision		Revision as of 16:20, 17 January 2022
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	\| TIME, N_VEL_COMPONENT, N_VEL_INSTRUMENT		\| TIME, N_VEL_COMPONENT, N_VEL_INSTRUMENT
	\| Units in m/s variables are water_velocity_measured_in_ <blockquote>''geographical_coordinates (ENU)''</blockquote> <blockquote>''beam_coordinates (BEAM)''</blockquote>		\| Units in m/s variables are water_velocity_measured_in_ <blockquote>''geographical_coordinates (ENU)''</blockquote> <blockquote>''beam_coordinates (BEAM)''</blockquote>
			\|-
			\| XYZ_VEL_FLAGS
			\| water_velocity_measured_in_
			instrument_coordinates_status_flags
			\| TIME, N_VEL_COMPONENT, N_VEL_INSTRUMENT
			\| CF-compliant 8-bit (0-255) boolean flag that designates why a velocity sample was discarded.
	\|-		\|-
	\| [[Level_1_data_(velocity_point-measurements)#Required_height_variable\|HEIGHT or DEPTH]]<math>\dagger</math>		\| [[Level_1_data_(velocity_point-measurements)#Required_height_variable\|HEIGHT or DEPTH]]<math>\dagger</math>

CynthiaBluteau at 16:19, 17 January 2022

2022-01-17T16:19:08Z

← Older revision		Revision as of 16:19, 17 January 2022
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	~~{{ReviewStage~~
	~~\|toreview=Ready for review~~
	~~\|authors=Cynthia~~
	~~\|instrument_type=Velocity point-measurements~~
	}}
	The required dimensions and variables for the first processing level within NetCDF ATOMIX format for velocity measurements are described below. This processing level contains the raw measurements recorded by the instrument. If sampling is in burst mode, the measurements from individual bursts are appended together.		The required dimensions and variables for the first processing level within NetCDF ATOMIX format for velocity measurements are described below. This processing level contains the raw measurements recorded by the instrument. If sampling is in burst mode, the measurements from individual bursts are appended together.

CynthiaBluteau: /* Group attributes (metadata) */

2021-12-16T21:14:24Z

Group attributes (metadata)

← Older revision		Revision as of 21:14, 16 December 2021
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	----		----
			Return to [[NetCDF velocimeters format]]

	Go to next level: [[Level_2_data_(velocity_point-measurements)\|Level 2 quality controlled and segmented]]		Go to next level: [[Level_2_data_(velocity_point-measurements)\|Level 2 quality controlled and segmented]]
	[[Category:Velocity point-measurements]]		[[Category:Velocity point-measurements]]

CynthiaBluteau: /* Required variables */

2021-12-16T21:12:27Z

Required variables

← Older revision		Revision as of 21:12, 16 December 2021
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	\| Units always in meters		\| Units always in meters
	\|-		\|-
	\| BURST_NUMBER <math>\dagger\dagger</math>		\| BURST_NUMBER<math>\dagger\dagger</math>
	\| unique_identifier_for_each_burst		\| unique_identifier_for_each_burst
	\| TIME		\| TIME

CynthiaBluteau at 20:24, 16 December 2021

2021-12-16T20:24:11Z

← Older revision		Revision as of 20:24, 16 December 2021
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	The required dimensions and variables for the first processing level within NetCDF ATOMIX format for velocity measurements are described below. This processing level contains the raw measurements recorded by the instrument. If sampling is in burst mode, the measurements from individual bursts are appended together.		The required dimensions and variables for the first processing level within NetCDF ATOMIX format for velocity measurements are described below. This processing level contains the raw measurements recorded by the instrument. If sampling is in burst mode, the measurements from individual bursts are appended together.

	~~Note only~~ a few attributes for each variable are listed since the page's purpose is to describe the information layout within each NetCDF file. {{FontColor\|bg=#fca1fd\|text=~~Please refer to the~~ [[NetCDF_parameter\|complete list]] for the additional attributes}} related to each variable.		Only a few attributes for each variable are listed since the page's purpose is to describe the information layout within each NetCDF file. Please refer to the {{FontColor\|bg=#fca1fd\|text= [[NetCDF_parameter\|complete list]]}} for the additional attributes related to each variable (e.g., units, bounds, cell_methods).

CynthiaBluteau: /* Required height variable */

2021-12-16T20:07:49Z

Required height variable

← Older revision		Revision as of 20:07, 16 December 2021
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	== Required height variable ==		== Required height variable ==
	Height or depth-related variables (only 1x is required). These variables locate the instrument vertically from a boundary (e.g, surface or ice). A negative value implies it's below the boundary. Units are always in meters.		Height or depth-related variables (only 1x is required). These variables locate the instrument vertically from a boundary (e.g, surface or ice). A negative value implies it's below the boundary. Units are always in meters. Can also provide a constant value in time representing the nominal height and/or depth.

	{\| class="wikitable sortable"		{\| class="wikitable sortable"

CynthiaBluteau: /* Dimensions */

2021-12-16T20:06:47Z

Dimensions

← Older revision		Revision as of 20:06, 16 December 2021
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	\|-		\|-
	\| N_VEL_COMPONENT		\| N_VEL_COMPONENT
	\| ~~number_of_velocity_components~~		\| unique_identifier_for_each_velocity_component
	\| N_VEL_COMPONENT		\| N_VEL_COMPONENT
	\| Maximum of 3 for u,v, w (east, north, up) velocities		\| Maximum of 3 for u,v, w (east, north, up) velocities
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	\|-		\|-
	\| N_VEL_INSTRUMENT		\| N_VEL_INSTRUMENT
	\| ~~number_of_unique_velocity_instruments~~		\| unique_identifier_for_each_velocity_instrument
	\| N_VEL_INSTRUMENT		\| N_VEL_INSTRUMENT
	\| Required only if storing multiple synchronized instruments in the same file		\| Required only if storing multiple synchronized instruments in the same file

CynthiaBluteau: /* Required variables */

2021-12-15T20:25:18Z

Required variables

← Older revision		Revision as of 20:25, 15 December 2021
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	\|-		\|-
	\| ABSIC		\| ABSIC
	\| ~~backscatter_intensity_from_acoustic_beam~~		\| backscatter_intensity_from_each_acoustic_beam
	\| TIME, N_VEL_COMPONENT, N_VEL_INSTRUMENT		\| TIME, N_VEL_COMPONENT, N_VEL_INSTRUMENT
	\| count		\| count
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	\| colspan="4" \| <math>\ddagger</math> Some manufacturers record quality-control variables (e.g., CORRN) in the instrument coordinate system. For example, Nortek records these variables in the instrument XYZ frame of reference. It's best to record the data in that coordinate system.		\| colspan="4" \| <math>\ddagger</math> Some manufacturers record quality-control variables (e.g., CORRN) in the instrument coordinate system. For example, Nortek records these variables in the instrument XYZ frame of reference. It's best to record the data in that coordinate system.

	<math>\dagger</math> A variable situating the instruments in the water column is required. This may be a nominal depth (or height) or a time-varying depth or height above the bottom.		<math>\dagger</math>A variable situating the instruments in the water column is required. This may be a nominal depth (or height) or a time-varying depth or height above the bottom.

	<math>\dagger\dagger</math> Variable required only when measuring in bursts e.g., 18 min of continuous measurements every hour.		<math>\dagger\dagger</math> Variable required only when measuring in bursts e.g., 18 min of continuous measurements every hour.