ERDDAP > info > bcodmo_dataset_1004881_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	[ARTEMIS DNA Metadata] - Niskin bottle metadata and environmental measurements associated with bacterial DNA samples collected from RVIB Nathaniel B. Palmer cruise NBP 22-02 in the Amundsen Sea Embayment from January to March 2022 (NSFGEO-NERC: Collaborative Research: Accelerating Thwaites Ecosystem Impacts for the Southern Ocean (ARTEMIS))		F   I   M	background			BCO-DMO	bcodmo_dataset_1004881_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.1004881.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-110.086
attribute	NC_GLOBAL	geospatial_lat_max	double	-72.0
attribute	NC_GLOBAL	geospatial_lat_min	double	-74.393
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-110.086
attribute	NC_GLOBAL	geospatial_lon_min	double	-119.399
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	1487.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	2.0
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://osprey.bco-dmo.org/dataset/1004881
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	-72.0
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	-74.393
attribute	NC_GLOBAL	summary	String	This dataset provides water column environmental data for a study that explored the relationships between glacial meltwater-modified ocean circulation, iron supply, and pelagic bacterial community structure in the Amundsen Sea polynya (ASP), Antarctica. Onboard the RVIB Nathaniel B. Palmer, cruise NBP 22-02, January–March 2022, we examined particle-associated (3-micrometer (µm) polycarbonate pre-filter) and free-living (0.2 µm Durapore filter) bacterial 16S rRNA in seawater from 21 stations (at depths from 2 to 1271 meters (m)) in the context of a suite of ocean observations along the "iron conveyor belt." This key circulation pathway follows Circumpolar Deep Water cascading from the Antarctic Circumpolar Current, along the bottom of the fore-deepened continental shelf toward the deep ice shelf cavity, where it melts the base of the ice shelf, then buoyantly upwells via meltwater entrainment, and delivers iron-rich waters to the surface waters of the polynya. A coastal current also transports this and other meltwater-rich outflows from east to west, and may play an important role in fueling ecosystem production. We were able to sample key water masses: Antarctic Surface Water (AASW), Winter Water (WW), Circumpolar Deep Water (CDW), and modified/mixed variants. Measured environmental parameters in this dataset are CTD variables (temperature, salinity, pressure, dissolved oxygen, beam transmissivity, fluorescence), macronutrients (nitrate, nitrite, ammonium, phosphate), lab chlorophyll a, micronutrient dissolved iron, δ¹⁸O, and calculated meltwater fractions. Results from this dataset, combined with 16S rRNA amplicon data, revealed distinct bacterial communities, characterized by location within the ASP, suggesting community succession along the route.
attribute	NC_GLOBAL	title	String	[ARTEMIS DNA Metadata] - Niskin bottle metadata and environmental measurements associated with bacterial DNA samples collected from RVIB Nathaniel B. Palmer cruise NBP 22-02 in the Amundsen Sea Embayment from January to March 2022 (NSFGEO-NERC: Collaborative Research: Accelerating Thwaites Ecosystem Impacts for the Southern Ocean (ARTEMIS))
attribute	NC_GLOBAL	Westernmost_Easting	double	-119.399
variable	Sample_ID		String
attribute	Sample_ID	long_name	String	Sample_id
attribute	Sample_ID	units	String	unitless
variable	ARTEMIS_ID		String
attribute	ARTEMIS_ID	long_name	String	Artemis_id
attribute	ARTEMIS_ID	units	String	unitless
variable	Station		String
attribute	Station	long_name	String	Station
attribute	Station	units	String	unitless
variable	Event		int
attribute	Event	actual_range	int	45, 890
attribute	Event	long_name	String	Event
attribute	Event	units	String	unitless
variable	CTD		String
attribute	CTD	long_name	String	Ctd
attribute	CTD	units	String	unitless
variable	NISKIN		int
attribute	NISKIN	actual_range	int	1, 24
attribute	NISKIN	long_name	String	Niskin
attribute	NISKIN	units	String	unitless
variable	Date		String
attribute	Date	long_name	String	Date
attribute	Date	units	String	unitless
variable	VolumeFiltered_L		float
attribute	VolumeFiltered_L	actual_range	float	1.6, 11.5
attribute	VolumeFiltered_L	long_name	String	Volumefiltered_l
attribute	VolumeFiltered_L	units	String	liters
variable	FilterDiameter_mm		int
attribute	FilterDiameter_mm	actual_range	int	47, 293
attribute	FilterDiameter_mm	long_name	String	Filterdiameter_mm
attribute	FilterDiameter_mm	units	String	millimeters
variable	FilterType		String
attribute	FilterType	long_name	String	Filtertype
attribute	FilterType	units	String	unitless
variable	FilterPoreSize_um		float
attribute	FilterPoreSize_um	actual_range	float	0.2, 3.0
attribute	FilterPoreSize_um	long_name	String	Filterporesize_um
attribute	FilterPoreSize_um	units	String	micrometers
variable	Community		String
attribute	Community	long_name	String	Community
attribute	Community	units	String	unitless
variable	DepthThreshold		String
attribute	DepthThreshold	long_name	String	Depththreshold
attribute	DepthThreshold	units	String	unitless
variable	Watermass		String
attribute	Watermass	long_name	String	Watermass
attribute	Watermass	units	String	unitless
variable	Location		String
attribute	Location	long_name	String	Location
attribute	Location	units	String	unitless
variable	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	-74.393, -72.0
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	-119.399, -110.086
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	Pressure_db		int
attribute	Pressure_db	actual_range	int	2, 1507
attribute	Pressure_db	long_name	String	Pressure_db
attribute	Pressure_db	units	String	decibars
variable	depth		int
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	actual_range	int	2, 1487
attribute	depth	axis	String	Z
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth_m
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	InsituTemp_C		float
attribute	InsituTemp_C	actual_range	float	-1.798, 1.654
attribute	InsituTemp_C	long_name	String	Insitutemp_c
attribute	InsituTemp_C	units	String	degrees C
variable	PracticalSalinity		float
attribute	PracticalSalinity	actual_range	float	33.266, 34.725
attribute	PracticalSalinity	long_name	String	Practicalsalinity
attribute	PracticalSalinity	units	String	(psu) or unitless
variable	PotentialTemp_C		float
attribute	PotentialTemp_C	actual_range	float	-1.805, 1.634
attribute	PotentialTemp_C	long_name	String	Potentialtemp_c
attribute	PotentialTemp_C	units	String	degrees C
variable	AbsoluteSalinity_g_kg		float
attribute	AbsoluteSalinity_g_kg	actual_range	float	33.426, 34.896
attribute	AbsoluteSalinity_g_kg	long_name	String	Absolutesalinity_g_kg
attribute	AbsoluteSalinity_g_kg	units	String	gram per kilogram seawater
variable	Potential_Density_Anomaly_kg_m3		float
attribute	Potential_Density_Anomaly_kg_m3	actual_range	float	26.751, 27.842
attribute	Potential_Density_Anomaly_kg_m3	long_name	String	Potential_density_anomaly_kg_m3
attribute	Potential_Density_Anomaly_kg_m3	units	String	kilograms per cubic meter seawater
variable	Dissolved_Oxygen_ml_L		float
attribute	Dissolved_Oxygen_ml_L	actual_range	float	4.101, 9.141
attribute	Dissolved_Oxygen_ml_L	long_name	String	Dissolved_oxygen_ml_l
attribute	Dissolved_Oxygen_ml_L	units	String	milliliters per liter seawater
variable	Beam_Transmissivity_pcnt		float
attribute	Beam_Transmissivity_pcnt	actual_range	float	68.418, 99.785
attribute	Beam_Transmissivity_pcnt	long_name	String	Beam_transmissivity_pcnt
attribute	Beam_Transmissivity_pcnt	units	String	percent (%)
variable	In_situ_Fluorescence_mg_m3		float
attribute	In_situ_Fluorescence_mg_m3	actual_range	float	-0.017, 28.314
attribute	In_situ_Fluorescence_mg_m3	long_name	String	In_situ_fluorescence_mg_m3
attribute	In_situ_Fluorescence_mg_m3	units	String	milligrams per cubic meter seawater
variable	Nitrate_umol_L		float
attribute	Nitrate_umol_L	actual_range	float	3.85, 38.74
attribute	Nitrate_umol_L	long_name	String	Nitrate_umol_l
attribute	Nitrate_umol_L	units	String	micromole per liter seawater
variable	Phosphate_umol_L		float
attribute	Phosphate_umol_L	actual_range	float	0.683, 2.74
attribute	Phosphate_umol_L	long_name	String	Phosphate_umol_l
attribute	Phosphate_umol_L	units	String	micromole per liter seawater
variable	Nitrite_umol_L		float
attribute	Nitrite_umol_L	actual_range	float	0.0, 0.171
attribute	Nitrite_umol_L	long_name	String	Nitrite_umol_l
attribute	Nitrite_umol_L	units	String	micromole per liter seawater
variable	Ammonium_umol_L		float
attribute	Ammonium_umol_L	actual_range	float	0.03, 2.078
attribute	Ammonium_umol_L	long_name	String	Ammonium_umol_l
attribute	Ammonium_umol_L	units	String	micromole per liter seawater
variable	Lab_Chlorophyll_a_ug_L		float
attribute	Lab_Chlorophyll_a_ug_L	actual_range	float	0.0, 8.255
attribute	Lab_Chlorophyll_a_ug_L	long_name	String	Lab_chlorophyll_a_ug_l
attribute	Lab_Chlorophyll_a_ug_L	units	String	microgram per liter seawater
variable	Dissolved_Iron_nmol_kg		float
attribute	Dissolved_Iron_nmol_kg	actual_range	float	0.092, 1.5
attribute	Dissolved_Iron_nmol_kg	long_name	String	Dissolved_iron_nmol_kg
attribute	Dissolved_Iron_nmol_kg	units	String	nanomole per kilogram seawater
variable	delO18_ppt		float
attribute	delO18_ppt	actual_range	float	-0.7, 0.1
attribute	delO18_ppt	long_name	String	Delo18_ppt
attribute	delO18_ppt	units	String	parts per thousand
variable	Fraction_CDW_pcnt		float
attribute	Fraction_CDW_pcnt	actual_range	float	95.4, 100.0
attribute	Fraction_CDW_pcnt	long_name	String	Fraction_cdw_pcnt
attribute	Fraction_CDW_pcnt	units	String	percent
variable	Fraction_Sea_Ice_Melt_pcnt		float
attribute	Fraction_Sea_Ice_Melt_pcnt	actual_range	float	-0.419, 2.68
attribute	Fraction_Sea_Ice_Melt_pcnt	long_name	String	Fraction_sea_ice_melt_pcnt
attribute	Fraction_Sea_Ice_Melt_pcnt	units	String	percent
variable	Fraction_Meteoric_pcnt		float
attribute	Fraction_Meteoric_pcnt	actual_range	float	-0.163, 2.47
attribute	Fraction_Meteoric_pcnt	long_name	String	Fraction_meteoric_pcnt
attribute	Fraction_Meteoric_pcnt	units	String	percent
variable	meltwater_fraction_TS_pcnt		float
attribute	meltwater_fraction_TS_pcnt	actual_range	float	-0.727, 7.53
attribute	meltwater_fraction_TS_pcnt	long_name	String	Meltwater_fraction_ts_pcnt
attribute	meltwater_fraction_TS_pcnt	units	String	percent
variable	Meltwater_Fraction_O2S_pcnt		float
attribute	Meltwater_Fraction_O2S_pcnt	actual_range	float	-0.581, 2.58
attribute	Meltwater_Fraction_O2S_pcnt	long_name	String	Meltwater_fraction_o2s_pcnt
attribute	Meltwater_Fraction_O2S_pcnt	units	String	percent
variable	Meltwater_Fraction_O2T_pcnt		float
attribute	Meltwater_Fraction_O2T_pcnt	actual_range	float	-8.14, 1.9
attribute	Meltwater_Fraction_O2T_pcnt	long_name	String	Meltwater_fraction_o2t_pcnt
attribute	Meltwater_Fraction_O2T_pcnt	units	String	percent

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.