bcodmo_dataset_946112_v1

Name: [GN01 Dissolved Methane (CH₄)] - Dissolved methane (CH₄) concentrations from the U.S. GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015 (U.S. Arctic GEOTRACES Study (GN01))
Creator: BCO-DMO
License: The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.

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	[GN01 Dissolved Methane (CH₄)] - Dissolved methane (CH₄) concentrations from the U.S. GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015 (U.S. Arctic GEOTRACES Study (GN01))		F I M	background			BCO-DMO	bcodmo_dataset_946112_v1

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.946112.1
attribute	NC_GLOBAL	Easternmost_Easting	double	179.1997
attribute	NC_GLOBAL	geospatial_lat_max	double	89.9876
attribute	NC_GLOBAL	geospatial_lat_min	double	60.252
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	179.1997
attribute	NC_GLOBAL	geospatial_lon_min	double	-179.8086
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	4200.1
attribute	NC_GLOBAL	geospatial_vertical_min	double	1.7
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/946112
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	license	String	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
attribute	NC_GLOBAL	Northernmost_Northing	double	89.9876
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	60.252
attribute	NC_GLOBAL	summary	String	This dataset reports dissolved methane (CH₄) concentrations from the US GEOTRACES Arctic Expedition on USCGC Healy (GN01, HLY1502) from August to October 2015. Seawater samples were collected using the ODF rosette. Both GEOTRACES samples and GO-SHIP samples from the same cruise were analyzed. Methane was analyzed using cavity ringdown spectroscopy to determine its concentration in an equilibrated headspace. Arctic waters are a possibly significant source of this Greenhouse Gas to the atmosphere and global change is likely exacerbating its release. Methane is also a potentially valuable indicator of interactions with the shelf as well as of river inputs. Dissolved methane concentrations in this section were highest over the continental shelves and slope, which supports our understanding of the major sources of methane (i.e., from microbes in oxygen-limited sediments, from gas seeps, and from gas-hydrates).
attribute	NC_GLOBAL	time_coverage_end	String	2015-10-07T13:56:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2015-08-12T17:40:00Z
attribute	NC_GLOBAL	title	String	[GN01 Dissolved Methane (CH₄)] - Dissolved methane (CH₄) concentrations from the U.S. GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015 (U.S. Arctic GEOTRACES Study (GN01))
attribute	NC_GLOBAL	Westernmost_Easting	double	-179.8086
variable	Station_ID		int
attribute	Station_ID	actual_range	int	1, 66
attribute	Station_ID	long_name	String	Station_id
attribute	Station_ID	units	String	unitless
variable	Event_ID		int
attribute	Event_ID	actual_range	int	6010, 6484
attribute	Event_ID	long_name	String	Event_id
attribute	Event_ID	units	String	unitless
variable	Start_Date_UTC		String
attribute	Start_Date_UTC	long_name	String	Start_date_utc
attribute	Start_Date_UTC	units	String	unitless
variable	Start_Time_UTC		String
attribute	Start_Time_UTC	long_name	String	Start_time_utc
attribute	Start_Time_UTC	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.4394012E9, 1.44422616E9
attribute	time	axis	String	T
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Start_iso_datetime_utc
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	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	60.252, 89.9876
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Start_latitude
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	-179.8086, 179.1997
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Start_longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	Rosette_Position		int
attribute	Rosette_Position	actual_range	int	1, 34
attribute	Rosette_Position	long_name	String	Rosette_position
attribute	Rosette_Position	units	String	unitless
variable	Sample_ID		int
attribute	Sample_ID	actual_range	int	10494, 12306
attribute	Sample_ID	long_name	String	Sample_id
attribute	Sample_ID	units	String	unitless
variable	depth		float
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	actual_range	float	1.7, 4200.1
attribute	depth	axis	String	Z
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Sample_depth
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	CH4_D_CONC_BOTTLE_fiwgyy		float
attribute	CH4_D_CONC_BOTTLE_fiwgyy	actual_range	float	-0.2, 56.93
attribute	CH4_D_CONC_BOTTLE_fiwgyy	long_name	String	Ch4_d_conc_bottle_fiwgyy
attribute	CH4_D_CONC_BOTTLE_fiwgyy	units	String	nanomoles per kilogram (nmol/kg)
variable	SD1_CH4_D_CONC_BOTTLE_fiwgyy		float
attribute	SD1_CH4_D_CONC_BOTTLE_fiwgyy	long_name	String	Sd1_ch4_d_conc_bottle_fiwgyy
attribute	SD1_CH4_D_CONC_BOTTLE_fiwgyy	units	String	nanomoles per kilogram (nmol/kg)
variable	Flag_CH4_D_CONC_BOTTLE_fiwgyy		int
attribute	Flag_CH4_D_CONC_BOTTLE_fiwgyy	actual_range	int	2, 4
attribute	Flag_CH4_D_CONC_BOTTLE_fiwgyy	long_name	String	Flag_ch4_d_conc_bottle_fiwgyy
attribute	Flag_CH4_D_CONC_BOTTLE_fiwgyy	units	String	unitless

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.