ERDDAP > info > bcodmo_dataset_957527_v1

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	[Open cell and single-step titration method comparison] - Open cell and single-step method for total alkalinity titrations from samples collected on R/V Mirai cruises MR23-06C and MR23- 07 in the North Pacific and Western Arctic from September to November 2023 (US GEOTRACES GP17- OCE and GP17-ANT: Inorganic Carbon Cycling in the South Pacific and Southern Oceans by Direct Measurement)		F   I   M	background			BCO-DMO	bcodmo_dataset_957527_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.957527.1
attribute	NC_GLOBAL	Easternmost_Easting	double	179.4858
attribute	NC_GLOBAL	geospatial_lat_max	double	77.0399
attribute	NC_GLOBAL	geospatial_lat_min	double	27.5003
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	179.4858
attribute	NC_GLOBAL	geospatial_lon_min	double	-174.8726
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://osprey.bco-dmo.org/dataset/957527
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	77.0399
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	27.5003
attribute	NC_GLOBAL	summary	String	Duplicate samples were collected for total alkalinity on two cruises in 2023 aboard the R/V Mirai (MR23-06C and MR23-07) in order to compare two different methods of total alkalinity titrations: the open cell with non-linear least squares fitting and single step with spectrophotometric endpoint detection. Measurements of dissolved inorganic carbon and pH on the total scale were also made as quality control checks. GLODAPv2 hinted at a potential offset between laboratories in the Pacific Ocean. We hypothesized that if non-negligible amounts of organic alkalinity were present, the different methods could be titrating different amounts leading to differences between the methods. The results show that any offset is within the uncertainty of the analytical precision and presence of organic alkalinity in open ocean waters remains inconclusive.
attribute	NC_GLOBAL	time_coverage_end	String	2023-11-01T03:38:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2023-09-07T21:11:00Z
attribute	NC_GLOBAL	title	String	[Open cell and single-step titration method comparison] - Open cell and single-step method for total alkalinity titrations from samples collected on R/V Mirai cruises MR23-06C and MR23-07 in the North Pacific and Western Arctic from September to November 2023 (US GEOTRACES GP17-OCE and GP17-ANT: Inorganic Carbon Cycling in the South Pacific and Southern Oceans by Direct Measurement)
attribute	NC_GLOBAL	Westernmost_Easting	double	-174.8726
variable	Cruise		String
attribute	Cruise	long_name	String	Cruise
attribute	Cruise	units	String	unitless
variable	sample_ID		int
attribute	sample_ID	actual_range	int	1100, 70136
attribute	sample_ID	long_name	String	Sample_id
attribute	sample_ID	units	String	unitless
variable	Station		int
attribute	Station	actual_range	int	1, 70
attribute	Station	long_name	String	Station
attribute	Station	units	String	unitless
variable	Cast		int
attribute	Cast	actual_range	int	1, 3
attribute	Cast	long_name	String	Cast
attribute	Cast	units	String	unitless
variable	NiskinBottle_No		int
attribute	NiskinBottle_No	actual_range	int	0, 36
attribute	NiskinBottle_No	long_name	String	Niskinbottle_no
attribute	NiskinBottle_No	units	String	unitless
variable	Date		String
attribute	Date	long_name	String	Date
attribute	Date	units	String	unitless
variable	time_unitless		String
attribute	time_unitless	long_name	String	Time
attribute	time_unitless	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.69412106E9, 1.69880988E9
attribute	time	axis	String	T
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	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	27.5003, 77.0399
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	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	-174.8726, 179.4858
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	CTD_Salinity		float
attribute	CTD_Salinity	actual_range	float	28.8814, 35.4799
attribute	CTD_Salinity	long_name	String	Ctd_salinity
attribute	CTD_Salinity	units	String	unitless
variable	CTD_Salinity_flag		int
attribute	CTD_Salinity_flag	actual_range	int	2, 9
attribute	CTD_Salinity_flag	long_name	String	Ctd_salinity_flag
attribute	CTD_Salinity_flag	units	String	unitless
variable	Bottle_Salinity		float
attribute	Bottle_Salinity	actual_range	float	24.1627, 35.474
attribute	Bottle_Salinity	long_name	String	Bottle_salinity
attribute	Bottle_Salinity	units	String	unitless
variable	Bot_Sal_flag		int
attribute	Bot_Sal_flag	actual_range	int	2, 9
attribute	Bot_Sal_flag	long_name	String	Bot_sal_flag
attribute	Bot_Sal_flag	units	String	unitless
variable	CTD_Pressure		float
attribute	CTD_Pressure	actual_range	float	5.0, 6137.2
attribute	CTD_Pressure	long_name	String	Ctd_pressure
attribute	CTD_Pressure	units	String	decibars (db)
variable	Total_Alkalinity_Single_Step_method		float
attribute	Total_Alkalinity_Single_Step_method	actual_range	float	1791.2, 2438.3
attribute	Total_Alkalinity_Single_Step_method	long_name	String	Total_alkalinity_single_step_method
attribute	Total_Alkalinity_Single_Step_method	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	Total_Alkalinity_Single_Step_Method_flag		int
attribute	Total_Alkalinity_Single_Step_Method_flag	actual_range	int	2, 6
attribute	Total_Alkalinity_Single_Step_Method_flag	long_name	String	Total_alkalinity_single_step_method_flag
attribute	Total_Alkalinity_Single_Step_Method_flag	units	String	unitless
variable	Total_Alkalinity_Open_Cell_Method		float
attribute	Total_Alkalinity_Open_Cell_Method	actual_range	float	1788.236, 2436.068
attribute	Total_Alkalinity_Open_Cell_Method	long_name	String	Total_alkalinity_open_cell_method
attribute	Total_Alkalinity_Open_Cell_Method	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	Total_Alkalinity_Open_Cell_Method_Flag		int
attribute	Total_Alkalinity_Open_Cell_Method_Flag	actual_range	int	2, 5
attribute	Total_Alkalinity_Open_Cell_Method_Flag	long_name	String	Total_alkalinity_open_cell_method_flag
attribute	Total_Alkalinity_Open_Cell_Method_Flag	units	String	unitless
variable	Ship_DIC		float
attribute	Ship_DIC	actual_range	float	1740.5, 2393.9
attribute	Ship_DIC	long_name	String	Ship_dic
attribute	Ship_DIC	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	Ship_DIC_flag		int
attribute	Ship_DIC_flag	actual_range	int	2, 6
attribute	Ship_DIC_flag	long_name	String	Ship_dic_flag
attribute	Ship_DIC_flag	units	String	unitless
variable	Lab_DIC		float
attribute	Lab_DIC	actual_range	float	1734.5, 2397.5
attribute	Lab_DIC	long_name	String	Lab_dic
attribute	Lab_DIC	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	Lab_DIC_analytical_flag		int
attribute	Lab_DIC_analytical_flag	actual_range	int	2, 4
attribute	Lab_DIC_analytical_flag	long_name	String	Lab_dic_analytical_flag
attribute	Lab_DIC_analytical_flag	units	String	unitless
variable	Lab_DIC_Storage_flag		int
attribute	Lab_DIC_Storage_flag	actual_range	int	2, 4
attribute	Lab_DIC_Storage_flag	long_name	String	Lab_dic_storage_flag
attribute	Lab_DIC_Storage_flag	units	String	unitless
variable	Ship_pHt		float
attribute	Ship_pHt	actual_range	float	7.2135, 8.0449
attribute	Ship_pHt	long_name	String	Ship_pht
attribute	Ship_pHt	units	String	total scale
variable	Ship_pHt_flag		int
attribute	Ship_pHt_flag	actual_range	int	2, 9
attribute	Ship_pHt_flag	long_name	String	Ship_pht_flag
attribute	Ship_pHt_flag	units	String	unitless
variable	Ship_pH_Temp		int
attribute	Ship_pH_Temp	actual_range	int	25, 25
attribute	Ship_pH_Temp	long_name	String	Ship_ph_temp
attribute	Ship_pH_Temp	units	String	degrees Celsius
variable	Lab_pHt		float
attribute	Lab_pHt	actual_range	float	7.2712, 8.1372
attribute	Lab_pHt	long_name	String	Lab_pht
attribute	Lab_pHt	units	String	total scale
variable	Lab_pHt_analytical_flag		int
attribute	Lab_pHt_analytical_flag	actual_range	int	2, 9
attribute	Lab_pHt_analytical_flag	long_name	String	Lab_pht_analytical_flag
attribute	Lab_pHt_analytical_flag	units	String	unitless
variable	Lab_pHt_storage_flag		int
attribute	Lab_pHt_storage_flag	actual_range	int	2, 9
attribute	Lab_pHt_storage_flag	long_name	String	Lab_pht_storage_flag
attribute	Lab_pHt_storage_flag	units	String	unitless
variable	Lab_pHt_temp		int
attribute	Lab_pHt_temp	actual_range	int	20, 20
attribute	Lab_pHt_temp	long_name	String	Lab_pht_temp
attribute	Lab_pHt_temp	units	String	degrees Celsius
variable	CTDTEMP		float
attribute	CTDTEMP	actual_range	float	-1.6626, 26.5914
attribute	CTDTEMP	long_name	String	Ctdtemp
attribute	CTDTEMP	units	String	degrees Celsius
variable	CTDTEMP_Flag		int
attribute	CTDTEMP_Flag	actual_range	int	2, 9
attribute	CTDTEMP_Flag	long_name	String	Ctdtemp_flag
attribute	CTDTEMP_Flag	units	String	unitless
variable	O2		float
attribute	O2	actual_range	float	14.53, 449.44
attribute	O2	long_name	String	O2
attribute	O2	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	O2_flag		int
attribute	O2_flag	actual_range	int	2, 9
attribute	O2_flag	long_name	String	O2_flag
attribute	O2_flag	units	String	unitless
variable	DOC		float
attribute	DOC	actual_range	float	34.2, 76.8
attribute	DOC	long_name	String	Doc
attribute	DOC	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	DOC_flag		int
attribute	DOC_flag	actual_range	int	2, 9
attribute	DOC_flag	long_name	String	Doc_flag
attribute	DOC_flag	units	String	unitless
variable	NO3		float
attribute	NO3	actual_range	float	-0.02, 44.61
attribute	NO3	long_name	String	No3
attribute	NO3	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	NO3_flag		int
attribute	NO3_flag	actual_range	int	2, 9
attribute	NO3_flag	long_name	String	No3_flag
attribute	NO3_flag	units	String	unitless
variable	NO2		float
attribute	NO2	actual_range	float	0.0, 0.33
attribute	NO2	long_name	String	No2
attribute	NO2	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	NO2_flag		int
attribute	NO2_flag	actual_range	int	2, 9
attribute	NO2_flag	long_name	String	No2_flag
attribute	NO2_flag	units	String	unitless
variable	Si		float
attribute	Si	actual_range	float	1.09, 234.28
attribute	Si	long_name	String	Si
attribute	Si	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	Si_flag		int
attribute	Si_flag	actual_range	int	2, 9
attribute	Si_flag	long_name	String	Si_flag
attribute	Si_flag	units	String	unitless
variable	PO4		float
attribute	PO4	actual_range	float	-0.003, 3.169
attribute	PO4	long_name	String	Po4
attribute	PO4	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	PO4_flag		int
attribute	PO4_flag	actual_range	int	2, 9
attribute	PO4_flag	long_name	String	Po4_flag
attribute	PO4_flag	units	String	unitless
variable	NH4		float
attribute	NH4	actual_range	float	-0.01, 7.58
attribute	NH4	long_name	String	Nh4
attribute	NH4	units	String	micromoles per kilogram of seawater (umol/kg_sw)
variable	NH4_flag		int
attribute	NH4_flag	actual_range	int	2, 9
attribute	NH4_flag	long_name	String	Nh4_flag
attribute	NH4_flag	units	String	unitless
variable	fDOM		float
attribute	fDOM	actual_range	float	0.001, 0.016
attribute	fDOM	long_name	String	Fdom
attribute	fDOM	units	String	RU
variable	fDOM_flag		int
attribute	fDOM_flag	actual_range	int	2, 9
attribute	fDOM_flag	long_name	String	Fdom_flag
attribute	fDOM_flag	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.