ERDDAP > info > SPI_10_5281_zenodo_2636778

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	SPI - Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/ 2017, during the Antarctic Circumnavigation Expedition.		F   I   M	background			Paul Scherrer Ins...	SPI_10_5281_zenodo_2636778

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	_NCProperties	String	version=2,netcdf=4.7.2,hdf5=1.10.5
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	citation	String	Schmale, J., Henning, S., Tummon, F., Hartmann, M., Baccarini, A., Welti, A., Lehtipalo, K., Tatzelt, C. and Gysel-Beer, M. (2020). Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition. (Version 1.1) [Data set]. Zenodo. http://doi.org/10.5281/zenodo.4028749
attribute	NC_GLOBAL	contributors	String	[{'title': 'Julia Schmale', 'path': 'https://orcid.org/0000-0002-1048-7962', 'email': 'julia.schmale@epfl.ch', 'role': 'author', 'organisation': 'Paul Scherrer Institute, Villigen, Switzerland', 'x_spi_additional_organisation': 'EPFL, Lausanne, Switzerland'}, {'title': 'Silvia Henning', 'path': 'https://orcid.org/0000-0001-9267-7825', 'role': 'author', 'organisation': 'Leibniz Institute for Tropospheric Research, Leipzig, Germany'}, {'title': 'Fiona Tummon', 'path': 'https://orcid.org/0000-0001-9700-1701', 'role': 'author', 'organisation': 'Eidgenössische Technische Hochschule Zürich; MeteoSwiss, Payerne, Switzerland'}, {'title': 'Markus Hartmann', 'path': 'https://orcid.org/0000-0001-9700-1701', 'role': 'author', 'organisation': 'Leibniz Institute for Tropospheric Research, Leipzig, Germany'}, {'title': 'Andrea Baccarini', 'path': 'https://orcid.org/0000-0003-4614-247X', 'role': 'author', 'organisation': 'Paul Scherrer Institute, Villigen, Switzerland'}, {'title': 'Katrianne Lehtipalo', 'path': 'https://orcid.org/0000-0002-1660-2706', 'role': 'author', 'organisation': 'University of Helsinki, Finland'}, {'title': 'Christian Tatzelt', 'path': 'https://orcid.org/0000-0001-7795-5372', 'role': 'author', 'organisation': 'Leibniz Institute for Tropospheric Research, Leipzig, Germany'}, {'title': 'Martin Gysel-Beer', 'path': 'https://orcid.org/0000-0002-7453-1264', 'role': 'author', 'organisation': 'Paul Scherrer Institute, Villigen, Switzerland'}, {'title': 'Jen Thomas', 'path': 'https://orcid.org/0000-0002-5986-7026', 'role': 'publisher', 'organisation': 'Swiss Polar Institute, Switzerland'}]
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_name	String	Julia Schmale
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://orcid.org/0000-0002-1048-7962
attribute	NC_GLOBAL	DOI	String	https://doi.org/10.5281/zenodo.4028749
attribute	NC_GLOBAL	Easternmost_Easting	double	179.99936
attribute	NC_GLOBAL	geospatial_lat_max	double	53.97401
attribute	NC_GLOBAL	geospatial_lat_min	double	-74.00771
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	179.99936
attribute	NC_GLOBAL	geospatial_lon_min	double	-179.99343
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://doi.org/10.5281/zenodo.4028749
attribute	NC_GLOBAL	institution	String	Paul Scherrer Institute, Villigen, Switzerland
attribute	NC_GLOBAL	keywords	String	ACE, ACE-SPACE, Antarctic Circumnavigation Expedition, Antarctica, carbon dioxide, carbon monoxide, CO, CO2, CO4, methane, O3, ozone, Southern Ocean, trace gas
attribute	NC_GLOBAL	license	String	CC-BY-4.0
attribute	NC_GLOBAL	Northernmost_Northing	double	53.97401
attribute	NC_GLOBAL	platform_code	String	UBXH3_ace_2636778
attribute	NC_GLOBAL	platform_name	String	R/V Akademik Tryoshnikov
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	-74.00771
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	The authors would highly appreciate to be contacted if the data is used for any purpose. We measured mixing ratios of CO, CO2 and CH4 with a PICARRO G2401 Gas Analyzer. Ozone (O3) mixing ratios were measured with a 2B Technology ozone monitor, model 205. We report five-minute averaged data cleaned from exhaust gas influence. Temporal coverage is from December 20, 2016 to April 10, 2017. The trace gas concentrations represent a large number of atmospheric processes that happen on different time scales. CO for example, has basically no sources other than combustion and can hence be used as tracer for air mass transport from regions with combustion activities (e.g., South Africa). CO has a lifetime of a few weeks. CO2 and CH4 are longer-lived trace gases which disperse globally. The data set shows that concentrations in the Northern Hemisphere are higher than in the Southern Hemisphere. Both trace gases are emitted by anthropogenic activities as well as natural sources. Over the cruise track, areas of the Southern Ocean were passed where these trace gases either outgas or are absorbed. Ozone is a secondary trace gas, meaning that it is formed in the atmosphere. Its concentrations are relatively low. All trace gases data have been cleaned from exhaust gas influence.
attribute	NC_GLOBAL	time_coverage_end	String	2017-04-10T23:55:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2016-12-17T00:00:00Z
attribute	NC_GLOBAL	title	String	SPI - Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition.
attribute	NC_GLOBAL	type	String	ferrybox/ship
attribute	NC_GLOBAL	Westernmost_Easting	double	-179.99343
variable	time		double
attribute	time	_ChunkSizes	uint	512
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.4819328E9, 1.4918685E9
attribute	time	axis	String	T
attribute	time	description	String	time
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Time
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
attribute	time	x_spi_emodnet_visualise_variable	String	False
variable	latitude		double
attribute	latitude	_ChunkSizes	uint	512
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	double	-74.00771, 53.97401
attribute	latitude	attribute	String	Average latitude of the ship on which the measurements took place, during the five-minute time interval
attribute	latitude	axis	String	Y
attribute	latitude	description	String	Average latitude of the ship on which the measurements took place, during the five-minute time interval [decimal degrees North]
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	spi_original_name	String	latitude [degN]
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
attribute	latitude	x_spi_emodnet_visualise_variable	String	False
variable	longitude		double
attribute	longitude	_ChunkSizes	uint	512
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	double	-179.99343, 179.99936
attribute	longitude	attribute	String	Average longitude of the ship on which the measurements took place, during the five-minute time interval
attribute	longitude	axis	String	X
attribute	longitude	description	String	Average longitude of the ship on which the measurements took place, during the five-minute time interval [decimal degrees East]
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	spi_original_name	String	longitude [degE]
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
attribute	longitude	x_spi_emodnet_visualise_variable	String	False
variable	o3_concentration		double
attribute	o3_concentration	_ChunkSizes	uint	512
attribute	o3_concentration	actual_range	double	-1.355, 44.175
attribute	o3_concentration	description	String	Concentration of ozone (O3) measured in parts per billion during the five-minute interval [ppb]
attribute	o3_concentration	spi_original_name	String	O3 [ppb]
attribute	o3_concentration	units	String	ppb
attribute	o3_concentration	x_spi_emodnet_visualise_variable	String	True
variable	ch4_concentration		double
attribute	ch4_concentration	_ChunkSizes	uint	512
attribute	ch4_concentration	actual_range	double	1.778, 1.97
attribute	ch4_concentration	description	String	Concentration of methane (CH4) measured in parts per million during the five-minute interval [ppm]
attribute	ch4_concentration	spi_original_name	String	CH4 [ppm]
attribute	ch4_concentration	units	String	ppm
attribute	ch4_concentration	x_spi_emodnet_visualise_variable	String	True
variable	co_concentration		double
attribute	co_concentration	_ChunkSizes	uint	512
attribute	co_concentration	actual_range	double	0.002, 0.18
attribute	co_concentration	description	String	Concentration of carbon monoxide (CO) measured in parts per billion during the five-minute interval [ppb]
attribute	co_concentration	spi_original_name	String	CO [ppb]
attribute	co_concentration	units	String	ppb
attribute	co_concentration	x_spi_emodnet_visualise_variable	String	True
variable	co2_concentration		double
attribute	co2_concentration	_ChunkSizes	uint	512
attribute	co2_concentration	actual_range	double	395.592, 419.977
attribute	co2_concentration	description	String	Concentration of carbon dioxide (CO2) measured in parts per million during the five-minute interval [ppm]
attribute	co2_concentration	spi_original_name	String	CO2 [ppm]
attribute	co2_concentration	units	String	ppm
attribute	co2_concentration	x_spi_emodnet_visualise_variable	String	True

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.