bcodmo_dataset_963692_v1

Name: [TGA for OAE North Atlantic experiments] - Thermogravimetric analysis (TGA) for precipitate from shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 (OCE-PRF: Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis)
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	[TGA for OAE North Atlantic experiments] - Thermogravimetric analysis (TGA) for precipitate from shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 (OCE-PRF: Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis)		M	background			BCO-DMO	bcodmo_dataset_963692_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	doi	String	10.26008/1912/bco-dmo.963692.1
attribute	NC_GLOBAL	infoUrl	String	https://osprey.bco-dmo.org/dataset/963692
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	sourceUrl	String	(local files)
attribute	NC_GLOBAL	summary	String	To explore mineral formation due to alkalinity addition, we present results from shipboard experiments in which an aqueous solution of NaOH was added to unfiltered seawater collected from the surface ocean in the Sargasso Sea. Alkalinity addition ranged from 500 to 2000 micromoles per kilogram (µmol.kg-1) and the carbonate chemistry was monitored through time by measuring total alkalinity (TA) and dissolved inorganic carbon (DIC), which were used to calculate Ω. The amount of precipitate and its mineralogy were determined throughout the experiments. Mineral precipitation took place in all experiments over a timescale of hours to days. The dominant mineralogy of precipitate is aragonite with trace amounts of calcite and brucite. Aragonite crystallite size increases and its micro-strain decreases with time, consistent with Ostwald ripening. This dataset contains TGA analysis for precipitate from an experiment where TA was enhanced by 2000 µmol.kg-1.
attribute	NC_GLOBAL	title	String	[TGA for OAE North Atlantic experiments] - Thermogravimetric analysis (TGA) for precipitate from shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 (OCE-PRF: Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis)
variable	time_elapsed		float
attribute	time_elapsed	actual_range	float	0.0125, 107.9708
attribute	time_elapsed	long_name	String	Time
attribute	time_elapsed	units	String	minutes
variable	Temperature		float
attribute	Temperature	actual_range	float	25.1838, 1099.316
attribute	Temperature	long_name	String	Temperature
attribute	Temperature	units	String	degrees Celsius
variable	Weight_mg		float
attribute	Weight_mg	actual_range	float	18.2731, 34.8802
attribute	Weight_mg	long_name	String	Weight_mg
attribute	Weight_mg	units	String	milligrams (mg)
variable	Weight_pcnt		float
attribute	Weight_pcnt	actual_range	float	52.3883, 100.0004
attribute	Weight_pcnt	long_name	String	Weight_pcnt
attribute	Weight_pcnt	units	String	percent
variable	first_derivative		float
attribute	first_derivative	actual_range	float	-4.0E-4, 0.5052
attribute	first_derivative	long_name	String	First_derivative
attribute	first_derivative	units	String	unitless
variable	Heat_Flow		float
attribute	Heat_Flow	actual_range	float	-39.111, 55.4339
attribute	Heat_Flow	long_name	String	Heat_flow
attribute	Heat_Flow	units	String	milliwatts (mW)
variable	Temperature_Difference_C		float
attribute	Temperature_Difference_C	actual_range	float	-2.2414, 8.6052
attribute	Temperature_Difference_C	long_name	String	Temperature_difference_c
attribute	Temperature_Difference_C	units	String	degrees Celsius
variable	Temperature_Difference_uV		float
attribute	Temperature_Difference_uV	actual_range	float	-27.2885, 50.2523
attribute	Temperature_Difference_uV	long_name	String	Temperature_difference_uv
attribute	Temperature_Difference_uV	units	String	microvolts (uV)
variable	Sample_Purge_Flow		float
attribute	Sample_Purge_Flow	actual_range	float	49.9132, 50.7403
attribute	Sample_Purge_Flow	long_name	String	Sample_purge_flow
attribute	Sample_Purge_Flow	units	String	milliliters per minute (mL/min)

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.