| variance_resolved_limit || threshold for the minimum percent of variance resolved in a shear spectrum. Typically 50%.
| variance_resolved_limit || threshold for the minimum percent of variance resolved in a shear spectrum. Typically 50%.
|-
| spectral_model || e.g., Nasmyth, Lueck or Panchev-Kesich
|-
| spectrum_std || statistical uncertainty (standard deviation) of the natural logarithm of spectrum of shear
|-
| num_vibration_goodman || number of vibration or acceleration time series used to clean the shear spectrum
|-
|-
| f_limit || upper limit to exclude frequencies that have contaminations. Typically infinity.
| f_limit || upper limit to exclude frequencies that have contaminations. Typically infinity.
|-
|-
| fit_2_isr || dissipation threshold to use the method of fitting to the inertial subrange. Typically 10-5 W/kg.
| fit_2_isr || dissipation threshold to use the method of fitting to the inertial subrange. Typically 10-5 W/kg.
|-
|eps_remove_top_meters || if applicable, upper meters removed from dissipation estimates (e.g., because of ship)
|-
|-
|area || e.g., Arctic Ocean, Barents Sea
|area || e.g., Arctic Ocean, Barents Sea
Revision as of 07:03, 21 September 2023
Below we list the metadata required in a NetCDF data file, as well as the optional meta data we highly recommend that are included with the data set.
The parameter names should be used as listed (attention to underscores). The descriptions are example text or several options that are available for that parameter.
Required Metadata
Parameter Name
Description
title
e.g., Vertical micostructure profiler data from cruise XXX
summary
required by ACDD
comment
required by CF
platform_type
research vessel, sub-surface glider etc
creation_time
yyyy-mm-ddTHH:MM:SSZ
date_created
yyyy-mm-ddTHH:MM:SSZ
date_update
yyyy-mm-ddTHH:MM:SSZ
time_reference_year
year for time reference
fs_fast
sampling frequency for fast channels
fs_slow [math]\displaystyle{ ^a }[/math]
sampling frequency for slow channels
profiling_direction
horizontal, vertical, glide
fft_length
as data points (note, fft_lengths_sec in seconds is optional)
diss_length
as data points
overlap
(for diss_length) as data points
num_fft_segments
number of FFT segments
goodman
0=not applied; 1=applied
HP_cut
the high-pass filter cutoff frequency in Hz. Can be zero for no filtering.
conventions
CF-1.6, ACDD-1.3, ATOMIX
history
Version 1
data_mode
D #(D)elayed
[math]\displaystyle{ ^a }[/math] or fast_ctd or similar if such records are included
Optional Metadata
Parameter Name
Description
fft_length_sec
seconds
diss_length_sec
seconds
overlap_sec
(for diss_length_sec) seconds
f_AA
Hz, the anti-aliasing frequency.
FOM_limit
non-dimensional, if absent the FOM QC-flag is not set. Typically, 1.15.
diss_ratio_limit
non-dimensional, if absent the dissipation ration QC-flag is not set. Typically, 2.77.
despike_shear_fraction_limit
non-dimensional, if absent the de-spike fraction QC-flag is not set. Typically, 0.05.
despike_shear_iterations_limit
non-dimensional, if absent the de-spike iteration passes QC-flag is not set. Typically 8.
variance_resolved_limit
threshold for the minimum percent of variance resolved in a shear spectrum. Typically 50%.
spectral_model
e.g., Nasmyth, Lueck or Panchev-Kesich
spectrum_std
statistical uncertainty (standard deviation) of the natural logarithm of spectrum of shear
num_vibration_goodman
number of vibration or acceleration time series used to clean the shear spectrum
f_limit
upper limit to exclude frequencies that have contaminations. Typically infinity.
fit_2_isr
dissipation threshold to use the method of fitting to the inertial subrange. Typically 10-5 W/kg.
eps_remove_top_meters
if applicable, upper meters removed from dissipation estimates (e.g., because of ship)
area
e.g., Arctic Ocean, Barents Sea
geospatial_lat_min
latitude minimum of data
geospatial_lat_max
latitude maximum of data
geospatial_lon_min
longitude minimum of data
geospatial_lon_max
longitude maximum of data
geospatial_vertical_min
0
geospatial_vertical_max
in m
geospatial_vertical_positive
down, up
time_coverage_start
yyyy-mm-ddTHH:MM:SSZ
time_coverage_end
yyyy-mm-ddTHH:MM:SSZ
institution
e.g. University of Bergen
principal_investigator
Name of Principal Investigator
authors
Names of authors
contact
email address of corresponding author (usually principal investigator)
project_name
name of project for which the data was collected
cruise
name of cruise from which the data was collected
vessel
name of vessel from which the data was collected
source
From the SeaVoX Platform Categories vocabulary (L06) list, e.g. “subsurface mooring”, ”ship”, ""sub-surface gliders"", ""autonomous underwater vehicle"" (CF)
references
key references
keywords
relevant keywords describing data e.g. shear probes
creator_name
name of person who generated the file
creator_email
email address of person who generated the file
creator_url
website address of the creator
acknowledgement
acknowledgements for this data. e.g. this could include crew of ship or funders
