ERDDAP > info > turbulence_cct

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	Turbulent parameters at the Amundsen-Nobile Climate Change Tower (Svalbard)		F   I   M	background			CNR	turbulence_cct

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	acknowledgement	String	The dataset is provided in the framework of the SIOS core data curation call [Research Council of Norway, project number 2022_SCD_01, Svalbard Integrated Arctic Earth Observing System - Knowledge Centre, operational phase]
attribute	NC_GLOBAL	cdm_data_type	String	TimeSeries
attribute	NC_GLOBAL	cdm_timeseries_variables	String	station_id,latitude,longitude
attribute	NC_GLOBAL	Conventions	String	ACDD-1.3, COARDS, CF-1.6
attribute	NC_GLOBAL	creator_email	String	mauro.mazzola at cnr.it
attribute	NC_GLOBAL	creator_name	String	CNR
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://iadc.cnr.it
attribute	NC_GLOBAL	Easternmost_Easting	double	11.86587
attribute	NC_GLOBAL	featureType	String	TimeSeries
attribute	NC_GLOBAL	geospatial_lat_max	double	78.92136
attribute	NC_GLOBAL	geospatial_lat_min	double	78.92136
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	11.86587
attribute	NC_GLOBAL	geospatial_lon_min	double	11.86587
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	history	String	Wind components and sonic temperature measurements were used to estimate friction velocity and kinematic heat flux. Before computing the micrometeorological parameters, a preliminary analysis is applied in order to assess the data quality and to remove low quality records. The quality control procedure (inspired to Zahn et al. (2016)) was applied to 30-minute data blocks following different steps: (i) COMPLETE RECORD TEST; (ii) BOUND TEST; (iii) SPIKES TEST; (iv) STATIONARITY TEST; MISSING VALUE TEST (v). See full report for the details.
attribute	NC_GLOBAL	infoUrl	String	https://iadc.cnr.it
attribute	NC_GLOBAL	institution	String	CNR
attribute	NC_GLOBAL	keywords	String	friction velocity, micro-meteorology, roughness length, sensible heat flux, turbulence
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	CC BY-NC: This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.
attribute	NC_GLOBAL	Northernmost_Northing	double	78.92136
attribute	NC_GLOBAL	product_version	String	2022
attribute	NC_GLOBAL	references	String	Mahrt, L., 1998. Flux Sampling Errors for aircraft and towers. J. Atmos. Ocean. Technol. 15, 416-429. Mc Millen, R.T., 1988. An Eddy correlation technique with extended applicability to non-simple terrain. Boundary-Layer Meteorol. 43, 231-245. Vickers D, Mahrt L. 2006. A solution for flux contamination by mesoscale motions with very weak turbulence. Boundary-Layer Meteorol. 118: 431-447. https://doi.org/10.1007/s10546-005-9003-y. Zahn, E., Chor, T.L., Dias, N. L., 2016. A Simple Methodology for Quality Control of Micrometeorological Datasets. American Journal of Environmental Engineering 6(4A): 135-142 DOI: 10.5923/s.ajee.201601.20.
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	78.92136
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Turbulent parameters are measured at the Amundsen-Nobile Climate Change Tower (CCT) by means of a Gill R3 sonic anemometer installed at 7.5 m from the ground since 2010. It measures the three components of the wind (u, v and w measured in m/s) and the sonic temperature (expressed in Kelvin degrees) at a rate of 20 Hz. These micro-meteorological measurements are complemented by standard meteorological ones at 4 levels: 2, 5, 10 and 33 m (acquisition time step 1 minute).
attribute	NC_GLOBAL	time_coverage_end	String	2022-12-31T23:30:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2021-01-01T00:00:00Z
attribute	NC_GLOBAL	title	String	Turbulent parameters at the Amundsen-Nobile Climate Change Tower (Svalbard)
attribute	NC_GLOBAL	Westernmost_Easting	double	11.86587
variable	station_id		String
attribute	station_id	actual_range	String	cct cct
attribute	station_id	cf_role	String	timeseries_id
attribute	station_id	long_name	String	Id of the station in the TimeSeries
variable	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	78.92136, 78.92136
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	latitude position of the station
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		float
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	11.86587, 11.86587
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	longitude position of the station
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.6094592E9, 1.6725294E9
attribute	time	axis	String	T
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Date and time of the measurement
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	Wind_speed_average_30min		float
attribute	Wind_speed_average_30min	_FillValue	float	NaN
attribute	Wind_speed_average_30min	actual_range	float	0.0, 26.77537
attribute	Wind_speed_average_30min	comment	String	See full report.
attribute	Wind_speed_average_30min	ioos_category	String	Unknown
attribute	Wind_speed_average_30min	long_name	String	Wind speed vectorial average over 30 min measured at 10 m a.g.l.
attribute	Wind_speed_average_30min	standard_name	String	wind_speed
attribute	Wind_speed_average_30min	units	String	m/s
variable	Wind_direction_average_30min		float
attribute	Wind_direction_average_30min	_FillValue	float	NaN
attribute	Wind_direction_average_30min	actual_range	float	0.02365, 359.9911
attribute	Wind_direction_average_30min	comment	String	See full report.
attribute	Wind_direction_average_30min	ioos_category	String	Unknown
attribute	Wind_direction_average_30min	long_name	String	Wind direction average over 30 min measured at 10 m a.g.l.
attribute	Wind_direction_average_30min	standard_name	String	wind_from_direction
attribute	Wind_direction_average_30min	units	String	degrees
variable	Friction_velocity_30		float
attribute	Friction_velocity_30	_FillValue	float	NaN
attribute	Friction_velocity_30	actual_range	float	0.01049, 3.34108
attribute	Friction_velocity_30	comment	String	See full report
attribute	Friction_velocity_30	ioos_category	String	Unknown
attribute	Friction_velocity_30	long_name	String	Friction velocity over 30 min
attribute	Friction_velocity_30	standard_name	String	friction_velocity_in_air
attribute	Friction_velocity_30	units	String	m/s
variable	Friction_velocity_2		float
attribute	Friction_velocity_2	_FillValue	float	NaN
attribute	Friction_velocity_2	actual_range	float	0.0, 1.49261
attribute	Friction_velocity_2	comment	String	Statistics calculated over 2 min are averaged over 30 min. See full report.
attribute	Friction_velocity_2	ioos_category	String	Unknown
attribute	Friction_velocity_2	long_name	String	Friction velocity over 30 min, obtained from 2 min values
attribute	Friction_velocity_2	standard_name	String	friction_velocity_in_air
attribute	Friction_velocity_2	units	String	m/s
variable	Heat_flux_30		float
attribute	Heat_flux_30	_FillValue	float	NaN
attribute	Heat_flux_30	actual_range	float	-0.7491, 2.091994
attribute	Heat_flux_30	ioos_category	String	Unknown
attribute	Heat_flux_30	long_name	String	Turbulent heat flux over 30 min
attribute	Heat_flux_30	standard_name	String	sensible_heat_flux_in_air
attribute	Heat_flux_30	units	String	W/m^2
variable	Heat_flux_2		float
attribute	Heat_flux_2	_FillValue	float	NaN
attribute	Heat_flux_2	actual_range	float	-0.3011, 0.4905
attribute	Heat_flux_2	comment	String	Statistics calculated over 2 min are averaged over 30 min. See full report.
attribute	Heat_flux_2	ioos_category	String	Unknown
attribute	Heat_flux_2	long_name	String	Turbulent heat flux over 30 min, obtained from 2 min values
attribute	Heat_flux_2	standard_name	String	sensible_heat_flux_in_air
attribute	Heat_flux_2	units	String	W/m^2
variable	NaN_percentage		float
attribute	NaN_percentage	_FillValue	float	NaN
attribute	NaN_percentage	actual_range	float	0.0, 99.4222
attribute	NaN_percentage	comment	String	See full report.
attribute	NaN_percentage	ioos_category	String	Unknown
attribute	NaN_percentage	long_name	String	Percentage of not valid values, excluded on the basis of the quality control checks.
attribute	NaN_percentage	units	String	percentage
variable	Flag_dir		byte
attribute	Flag_dir	_FillValue	byte	127
attribute	Flag_dir	actual_range	byte	0, 1
attribute	Flag_dir	comment	String	See full report.
attribute	Flag_dir	ioos_category	String	Unknown
attribute	Flag_dir	long_name	String	Boolean value that indicates if values are disturbed by CCT structure due to the wind direction.
attribute	Flag_dir	standard_name	String	status_flag
attribute	Flag_dir	units	String	1
variable	Roughness_length		float
attribute	Roughness_length	_FillValue	float	NaN
attribute	Roughness_length	actual_range	float	0.0, 0.310175
attribute	Roughness_length	comment	String	See full report.
attribute	Roughness_length	ioos_category	String	Unknown
attribute	Roughness_length	long_name	String	Roughness length assuming a typical log wind profile under statically neutral conditions.
attribute	Roughness_length	standard_name	String	surface_roughness_length
attribute	Roughness_length	units	String	m

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.