ERDDAP > info > bcodmo_dataset_756682

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	Sulfur Near Edge X-ray Fluorescence Spectroscopy Data for standard materials		I   M	background			BCO-DMO	bcodmo_dataset_756682

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv
attribute	NC_GLOBAL	acquisition_description	String	Methodology: The sulfur standards were ground using an agate mortar and pestle to the consistency of a fine talcum powder (approximately 10 um). A cellulose acetate filter was then gently dredged through a small quantity (less than 1 mg) of powder placed on a microscope slide. This procedure produced a thin and almost imperceptible coating on the filter in order to limit the thickness and thus self-absorption. S-NEXFS spectra of sulfate standards were collected in bulk mode. Self-absorption must be carefully controlled when measuring fluorescent X-rays from thick specimens; however, the effects of self- absorption are limited to the region of the spectrum above the K-edge. In our repeated measurements, the post-edge features were consistent and reproducible, which allows discrimination of different sulfate standards. Sampling and analytical procedures: S compounds and minerals were obtained from chemical supply houses or mineral dealers. See papers cited below for details. Instruments: X-ray fluorescence microscope located at beamline 2-ID-B at the Advanced Photon Source, Argonne National Laboratory. The beamline is optimized to examine samples over a 1\u20134 keV energy range using a focused X-ray beam with a spot size of approximately 60 nanometers squared . The energy was calibrated using an elemental sulfur standard. The whiteline energy of the elemental sulfur standard was aligned to 2472 eV. Data processing: S-NEXFS data were normalized to create a relative intensity value of approximately 1 for post-edge area of the spectra. The data were also processed using a three-point smoothing algorithm built into the software package Athena to remove high-frequency noise (Ravel and Newville, 2005).
attribute	NC_GLOBAL	awards_0_award_nid	String	753301
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1357375
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1357375
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Sulfur NEXFS Standards PI: Ellery Ingall (GA Tech) Version date: 22-Feb-2019
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_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2019-02-22T17:35:30Z
attribute	NC_GLOBAL	date_modified	String	2019-03-29T19:26:39Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.756682.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/756682
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	X-ray fluorescence microscope located at beamline 2-ID-B at the Advanced Photon Source, Argonne National Laboratory: The beamline is optimized to examine samples over a 1–4 keV energy range using a focused X-ray beam with a spot size of approximately 60 nanometers squared . The energy was calibrated using an elemental sulfur standard. The whiteline energy of the elemental sulfur standard was aligned to 2472 eV.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	756694
attribute	NC_GLOBAL	instruments_0_description	String	Instruments that generate enlarged images of samples using the phenomena of fluorescence and phosphorescence instead of, or in addition to, reflection and absorption of visible light. Includes conventional and inverted instruments.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB06/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Microscope-Fluorescence
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	695
attribute	NC_GLOBAL	instruments_0_supplied_name	String	X-ray fluorescence microscope
attribute	NC_GLOBAL	keywords	String	ammonia, ammonium, Ammonium_Sulfate, barite, bco, bco-dmo, biological, chemical, chemistry, concentration, copper, Copper_II_Sulfate, data, dataset, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, energy, erddap, gypsum, iii, iron, Iron_Ammonium_Sulfate, Iron_III_Sulfate, jarosite, magnesium, Magnesium_Sulfate, management, mole, mole_concentration_of_ammonium_in_sea_water, nh4, ocean, oceanography, oceans, office, potassium, Potassium_Sulfate, preliminary, science, sea, seawater, sodium, Sodium_Sulfate, sulfate, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/756682/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/756682
attribute	NC_GLOBAL	param_mapping	String	{'756682': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/756682/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Georgia Institute of Technology
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	Georgia Tech
attribute	NC_GLOBAL	people_0_person_name	String	Ellery Ingall
attribute	NC_GLOBAL	people_0_person_nid	String	645498
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_1_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_1_person_nid	String	51498
attribute	NC_GLOBAL	people_1_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	project	String	Aerosol P
attribute	NC_GLOBAL	projects_0_acronym	String	Aerosol P
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: Primary nutrients, such as nitrogen and phosphorus, are critical for all life on earth, and limited quantities in the marine environment can inhibit primary productivity. Atmospheric aerosols are a significant source of these nutrients to nutrient-poor ocean regions, such as the phosphorus-limited Mediterranean Sea. The availability of phosphorus in aerosols has traditionally been linked to the composition and abundance of different phosphorus phases present. Unfortunately, investigating phosphorus composition in aerosols has been challenging due to methodological limitations until recently. In this study, researchers from Georgia Tech will use a new technique known as synchrotron-based P Near Edge X-ray Fluorescence Spectroscopy, in conjunction with X-ray fluorescence microscopy, to examine the diversity of aerosol phosphorus phases delivered to the Mediterranean Sea. By defining the relationship between air mass source region, aerosol composition, and bioavailability, results from this work will improve current knowledge of the factors regulating productivity in the Mediterranean Sea and help to clarify the potential response of this region to different climate change scenarios. Broader Impacts: In addition to the valuable insights this project will provide on the controls on productivity and nutrient cycling in the Mediterranean Sea, this study will further education of young scientists, broaden participation of under-represented groups in ocean science, and enhance research infrastructure.
attribute	NC_GLOBAL	projects_0_end_date	String	2018-07
attribute	NC_GLOBAL	projects_0_geolocation	String	Mediterranean
attribute	NC_GLOBAL	projects_0_name	String	P-NEXFS investigation of the influence of aerosol phosphorus on the Mediterranean Sea
attribute	NC_GLOBAL	projects_0_project_nid	String	753302
attribute	NC_GLOBAL	projects_0_start_date	String	2014-02
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Sulfur Near Edge X-ray Fluorescence Spectroscopy Data for standard materials.
attribute	NC_GLOBAL	title	String	Sulfur Near Edge X-ray Fluorescence Spectroscopy Data for standard materials
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Energy		double
attribute	Energy	_FillValue	double	NaN
attribute	Energy	actual_range	double	2462.95, 2512.95
attribute	Energy	bcodmo_name	String	unknown
attribute	Energy	description	String	X-ray energy
attribute	Energy	long_name	String	Energy
attribute	Energy	units	String	electron volts
variable	Ammonium_Sulfate		double
attribute	Ammonium_Sulfate	_FillValue	double	NaN
attribute	Ammonium_Sulfate	actual_range	double	-0.00651, 2.9953469
attribute	Ammonium_Sulfate	bcodmo_name	String	count
attribute	Ammonium_Sulfate	colorBarMaximum	double	5.0
attribute	Ammonium_Sulfate	colorBarMinimum	double	0.0
attribute	Ammonium_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Ammonium_Sulfate	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	Ammonium_Sulfate	units	String	x-ray fluorescence counts
variable	Barite		double
attribute	Barite	_FillValue	double	NaN
attribute	Barite	actual_range	double	-0.00205, 1.4496355
attribute	Barite	bcodmo_name	String	count
attribute	Barite	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Barite	long_name	String	Barite
attribute	Barite	units	String	x-ray fluorescence counts
variable	Copper_II_Sulfate		double
attribute	Copper_II_Sulfate	_FillValue	double	NaN
attribute	Copper_II_Sulfate	actual_range	double	-0.00241, 1.8524978
attribute	Copper_II_Sulfate	bcodmo_name	String	count
attribute	Copper_II_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Copper_II_Sulfate	long_name	String	Copper II Sulfate
attribute	Copper_II_Sulfate	units	String	x-ray fluorescence counts
variable	Gypsum		double
attribute	Gypsum	_FillValue	double	NaN
attribute	Gypsum	actual_range	double	-0.00256, 2.0457804
attribute	Gypsum	bcodmo_name	String	count
attribute	Gypsum	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Gypsum	long_name	String	Gypsum
attribute	Gypsum	units	String	x-ray fluorescence counts
variable	Iron_Ammonium_Sulfate		double
attribute	Iron_Ammonium_Sulfate	_FillValue	double	NaN
attribute	Iron_Ammonium_Sulfate	actual_range	double	-0.0229, 1.6765362
attribute	Iron_Ammonium_Sulfate	bcodmo_name	String	count
attribute	Iron_Ammonium_Sulfate	colorBarMaximum	double	5.0
attribute	Iron_Ammonium_Sulfate	colorBarMinimum	double	0.0
attribute	Iron_Ammonium_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Iron_Ammonium_Sulfate	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	Iron_Ammonium_Sulfate	units	String	x-ray fluorescence counts
variable	Iron_III_Sulfate		double
attribute	Iron_III_Sulfate	_FillValue	double	NaN
attribute	Iron_III_Sulfate	actual_range	double	-0.00876, 2.6487011
attribute	Iron_III_Sulfate	bcodmo_name	String	count
attribute	Iron_III_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Iron_III_Sulfate	long_name	String	Iron III Sulfate
attribute	Iron_III_Sulfate	units	String	x-ray fluorescence counts
variable	Jarosite		double
attribute	Jarosite	_FillValue	double	NaN
attribute	Jarosite	actual_range	double	-0.00578, 2.1202962
attribute	Jarosite	bcodmo_name	String	count
attribute	Jarosite	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Jarosite	long_name	String	Jarosite
attribute	Jarosite	units	String	x-ray fluorescence counts
variable	Magnesium_Sulfate		double
attribute	Magnesium_Sulfate	_FillValue	double	NaN
attribute	Magnesium_Sulfate	actual_range	double	-0.00785, 1.6286722
attribute	Magnesium_Sulfate	bcodmo_name	String	count
attribute	Magnesium_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Magnesium_Sulfate	long_name	String	Magnesium Sulfate
attribute	Magnesium_Sulfate	units	String	x-ray fluorescence counts
variable	Potassium_Sulfate		double
attribute	Potassium_Sulfate	_FillValue	double	NaN
attribute	Potassium_Sulfate	actual_range	double	-0.00713, 1.5300749
attribute	Potassium_Sulfate	bcodmo_name	String	count
attribute	Potassium_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Potassium_Sulfate	long_name	String	Potassium Sulfate
attribute	Potassium_Sulfate	units	String	x-ray fluorescence counts
variable	Sodium_Sulfate		double
attribute	Sodium_Sulfate	_FillValue	double	NaN
attribute	Sodium_Sulfate	actual_range	double	-0.0139, 2.0601661
attribute	Sodium_Sulfate	bcodmo_name	String	count
attribute	Sodium_Sulfate	description	String	Name of sulfur standard or mineral analyzed. Units (x-ray fluorescence counts) are normalized to incoming radiation.
attribute	Sodium_Sulfate	long_name	String	Sodium Sulfate
attribute	Sodium_Sulfate	units	String	x-ray fluorescence counts

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.