ERDDAP > info > CruiseChlorophyll

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph		files	Chlorophyll and phaeopigments from water column samples, collected at selected depths aboard Palmer LTER annual cruises off the coast of the Western Antarctic Peninsula, 1991 - 2019.		F   I   M	background			National Science ...	CruiseChlorophyll

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	_NCProperties	String	version=1|netcdflibversion=4.6.1|hdf5libversion=1.10.6
attribute	NC_GLOBAL	acknowledgement	String	Funding and support provided by the National Science Foundation
attribute	NC_GLOBAL	cdm_data_type	String	Trajectory
attribute	NC_GLOBAL	cdm_trajectory_variables	String	study_name
attribute	NC_GLOBAL	comment	String	The Palmer, Antarctica, Long-Term Ecological Research project is a member site of the Long-Term Ecological Research program, a network of sites investigating diverse biomes. A team of researchers seeks to understand the structure and function of the Western Antarctic Peninsula's marine and terrestrial ecosystems in the context of seasonal-to-interannual atmospheric and sea ice dynamics, as well as long-term climate change. The PAL measurement system (or grid) is designed to study marine and terrestrial food webs consisting principally of diatom primary producers, the dominant herbivore Antarctic krill, and the apex predator Adelie penguin. An attenuated microbial food web is also a focus. PAL studies these ecosystems annually over a regional scale grid of oceanographic stations and seasonally at Palmer Station. Palmer Station is located on Anvers Island west of the Antarctic Peninula. The peninsula runs perpendicular to a strong climatic gradient between the cold, dry continental regime to the south, characteristic of the Antarctic interior, and the warm, moist, maritime regime to the north. North-south shifts in the gradient give rise to large environmental variability to climate change. Sea ice extent and variability affects ecosystem changes at all trophic levels. In addition to the long-term field and research activities, information management, graduate student training, education and outreach are an integral part of the program.
attribute	NC_GLOBAL	contributor_email	String	oscar@marine.rutgers.edu,mvernet@ucsd.edu,ray@icess.ucsb.edu
attribute	NC_GLOBAL	contributor_name	String	Oscar Schofield,Maria Vernet,Raymond Smith
attribute	NC_GLOBAL	contributor_role	String	PrincipalInvestigator,PrincipalInvestigator,PrincipalInvestigator
attribute	NC_GLOBAL	contributor_role_vocabulary	String	https://vocab.nerc.ac.uk/collection/G04/current/
attribute	NC_GLOBAL	Conventions	String	CF-1.8, ACDD-1.3, COARDS
attribute	NC_GLOBAL	creator_country	String	USA
attribute	NC_GLOBAL	creator_email	String	kerfoot at marine.rutgers.edu
attribute	NC_GLOBAL	creator_institution	String	Rutgers University
attribute	NC_GLOBAL	creator_name	String	John Kerfoot
attribute	NC_GLOBAL	creator_sector	String	academic
attribute	NC_GLOBAL	creator_type	String	person
attribute	NC_GLOBAL	creator_url	String	https://rucool.marine.rutgers.edu
attribute	NC_GLOBAL	datazoo_dataset_id	String	24
attribute	NC_GLOBAL	datazoo_datatable_id	String	24
attribute	NC_GLOBAL	datazoo_datatable_label	String	Chlorophyll (Cruise)
attribute	NC_GLOBAL	datazoo_datatable_name	String	Chlorophyll
attribute	NC_GLOBAL	date_created	String	2022-02-28T14:26:21Z
attribute	NC_GLOBAL	date_issued	String	2022-02-28T14:26:21Z
attribute	NC_GLOBAL	defaultDataQuery	String	null
attribute	NC_GLOBAL	defaultGraphQuery	String	longitude,latitude&.draw=markers&.marker=6%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff&.yRange=%7C%7Cfalse%7C
attribute	NC_GLOBAL	doi	String	https://doi.org/10.6073/pasta/585ba08c3ab00f7d36f3756bb8e7f79b
attribute	NC_GLOBAL	Easternmost_Easting	double	-49.35
attribute	NC_GLOBAL	featureType	String	Trajectory
attribute	NC_GLOBAL	geospatial_bounds_crs	String	EPSG:4326
attribute	NC_GLOBAL	geospatial_bounds_vertical_crs	String	EPSG:5831
attribute	NC_GLOBAL	geospatial_lat_max	double	-48.35
attribute	NC_GLOBAL	geospatial_lat_min	double	-70.095
attribute	NC_GLOBAL	geospatial_lat_resolution	String	0.00001 degree
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-49.35
attribute	NC_GLOBAL	geospatial_lon_min	double	-78.20833
attribute	NC_GLOBAL	geospatial_lon_resolution	String	0.00001 degree
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	3718.14
attribute	NC_GLOBAL	geospatial_vertical_min	double	0.0
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	history	String	local files
attribute	NC_GLOBAL	infoUrl	String	https://pal.lternet.edu/
attribute	NC_GLOBAL	institution	String	National Science Foundation
attribute	NC_GLOBAL	keywords	String	biogeochemistry, biomass, chlorophyll, communities, ecology, ecosystems, food webs, habitats, ice, marine, measurements, Primary Production, primary production, remote sensing, Signature, trophic dynamics
attribute	NC_GLOBAL	keywords_vocabulary	String	LTER Controlled Vocabulary,LTER Core Areas
attribute	NC_GLOBAL	license	String	All data contained herein is licensed under the LTER Network Data Access Policy (https://lternet.edu/data-access-policy/). In accordance with scientific publishing conventions and professional etiquette, the consumer of these data (the "Data User") is expected to appropriately cite these data in any publication that results from their use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur and should realize that misinterpretation of data may occur if used out of context of the original study. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the data authors. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data.
attribute	NC_GLOBAL	license_link	String	https://lternet.edu/data-access-policy/
attribute	NC_GLOBAL	methods	String	General Methods: Determined by extraction and measured from a discrete sample using a bench fluorometer.
attribute	NC_GLOBAL	naming_authority	String	edu.rutgers.rucool
attribute	NC_GLOBAL	Northernmost_Northing	double	-48.35
attribute	NC_GLOBAL	product_version	String	1.0
attribute	NC_GLOBAL	program	String	LTER
attribute	NC_GLOBAL	project	String	Palmer LTER
attribute	NC_GLOBAL	publisher_country	String	USA
attribute	NC_GLOBAL	publisher_email	String	kerfoot at marine.rutgers.edu
attribute	NC_GLOBAL	publisher_institution	String	Rutgers University
attribute	NC_GLOBAL	publisher_name	String	John Kerfoot
attribute	NC_GLOBAL	publisher_type	String	person
attribute	NC_GLOBAL	publisher_url	String	https://rucool.marine.rutgers.edu
attribute	NC_GLOBAL	references	String	https://pal.lternet.edu/
attribute	NC_GLOBAL	sea_name	String	Southern Ocean
attribute	NC_GLOBAL	source	String	/Users/kerfoot/data/lter/data/tsv/dat_24/dat_24_PD97-01.tsv
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	-70.095
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v77
attribute	NC_GLOBAL	subsetVariables	String	study_name,grid_line,grid_station,nominal_station
attribute	NC_GLOBAL	summary	String	Phytoplankton chlorophyll sampling was led by Smith from 1991-2002, and then by Vernet from 2003-2008. Schofield is the third, and current lead, beginning in 2009. Methods have been kept consistent as much as possible over the full time series and different Principal Investigators. Chlorophyll a (Chl a) is the principal photosynthetic pigment of phytoplankton, and is used as a proxy measurement for estimating phytoplankton biomass in water samples. Chl a concentrations reflect the distribution of active phytoplankton spatially and with depth in the water column and their changes over time. Phaeopigments are non-photosynthetic pigments that are degradation products of phytoplankton chlorophylls which form during and after phytoplankton blooms. Water samples are collected throughout the water column along the Western Antarctic Peninsula at regular LTER grid stations where Conductivity, Temperature, Depth (CTD) casts are preformed and in surface waters at underway stations, where CTD casts are not done, using the ship's flow-through seawater system. Water samples are filtered onto GF/F filters, and filters kept frozen at -80°C until analysis at Palmer Station following the completion of the cruise. Fluorometric chlorophyll and phaeopigment analysis is conducted at Palmer Station through acetone extraction of the GF/F filters and measurement of the extract on a Turner 10AU Fluorometer. The primary source of error for phaeopigment measurement is Chlorophyll b. If high amounts of Chlorophyll b are present in the sample, phaeopigments may be overestimated.
attribute	NC_GLOBAL	time_coverage_end	String	2019-02-04T12:15:10Z
attribute	NC_GLOBAL	time_coverage_start	String	1989-03-28T16:14:00Z
attribute	NC_GLOBAL	title	String	Chlorophyll and phaeopigments from water column samples, collected at selected depths aboard Palmer LTER annual cruises off the coast of the Western Antarctic Peninsula, 1991 - 2019.
attribute	NC_GLOBAL	Westernmost_Easting	double	-78.20833
variable	study_name		String
attribute	study_name	cf_role	String	trajectory_id
attribute	study_name	column_name	String	studyName
attribute	study_name	comment	String	Cruise name
attribute	study_name	ioos_category	String	Identifier
attribute	study_name	long_name	String	Study
variable	chlorophyll_a		double
attribute	chlorophyll_a	_FillValue	double	9.969209968386869E36
attribute	chlorophyll_a	actual_range	double	0.0, 13292.5
attribute	chlorophyll_a	colorBarMaximum	double	30.0
attribute	chlorophyll_a	colorBarMinimum	double	0.03
attribute	chlorophyll_a	colorBarScale	String	Log
attribute	chlorophyll_a	column_id	long	298
attribute	chlorophyll_a	column_name	String	col_298
attribute	chlorophyll_a	ioos_category	String	Ocean Color
attribute	chlorophyll_a	lter_column_description	String	a photosynthetic pigment
attribute	chlorophyll_a	lter_column_name	String	Chlorophyll
attribute	chlorophyll_a	lter_mscale	String	ratio
attribute	chlorophyll_a	lter_num_type	String	real
attribute	chlorophyll_a	lter_units	String	mg/m³
attribute	chlorophyll_a	lter_units_string	String	milligramPerMeterCubed
attribute	chlorophyll_a	standard_name	String	mass_concentration_of_chlorophyll_a_in_sea_water
attribute	chlorophyll_a	units	String	mg m-3
attribute	chlorophyll_a	units_conventions	String	EML-LTER
variable	phaeopigment		double
attribute	phaeopigment	_FillValue	double	9.969209968386869E36
attribute	phaeopigment	actual_range	double	0.0, 10447.3
attribute	phaeopigment	column_id	long	299
attribute	phaeopigment	column_name	String	col_299
attribute	phaeopigment	ioos_category	String	Unknown
attribute	phaeopigment	lter_column_description	String	a non-photosynthetic pigment
attribute	phaeopigment	lter_column_name	String	Phaeopigment
attribute	phaeopigment	lter_mscale	String	ratio
attribute	phaeopigment	lter_num_type	String	real
attribute	phaeopigment	lter_units	String	mg/m³
attribute	phaeopigment	lter_units_string	String	milligramPerMeterCubed
attribute	phaeopigment	units	String	mg m-3
attribute	phaeopigment	units_conventions	String	EML-LTER
variable	event		String
attribute	event	column_id	long	300
attribute	event	column_name	String	col_300
attribute	event	ioos_category	String	Unknown
attribute	event	lter_column_description	String	sequence of cruise happenings ordered by time
attribute	event	lter_column_name	String	Event
attribute	event	lter_mscale	String	interval
attribute	event	lter_num_type	String	real
attribute	event	lter_units_string	String	number
attribute	event	units_conventions	String	EML-2.0.1,EML-2.1.0,EML-LTER
variable	bottle		byte
attribute	bottle	_FillValue	byte	127
attribute	bottle	actual_range	byte	1, 46
attribute	bottle	column_id	long	301
attribute	bottle	column_name	String	col_301
attribute	bottle	ioos_category	String	Unknown
attribute	bottle	lter_column_description	String	reference number of sample bottle from rosette
attribute	bottle	lter_column_name	String	Bottle
attribute	bottle	lter_mscale	String	interval
attribute	bottle	lter_num_type	String	natural
attribute	bottle	lter_units_string	String	number
attribute	bottle	units_conventions	String	EML-2.0.1,EML-2.1.0,EML-LTER
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	6.0710484E8, 1.54928251E9
attribute	time	axis	String	T
attribute	time	calendar	String	proleptic_gregorian
attribute	time	column_id	long	441
attribute	time	column_name	String	col_441
attribute	time	comment	String	date and time
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Time
attribute	time	lter_column_description	String	date and time
attribute	time	lter_column_name	String	Datetime GMT
attribute	time	lter_mscale	String	dateTime
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	grid_line		String
attribute	grid_line	column_id	long	442
attribute	grid_line	column_name	String	col_442
attribute	grid_line	ioos_category	String	Unknown
attribute	grid_line	lter_column_description	String	line on a pre-defined survey grid in the LTER Palmer study area
attribute	grid_line	lter_column_name	String	Grid Line
attribute	grid_line	lter_mscale	String	nominal
variable	grid_station		String
attribute	grid_station	column_id	long	443
attribute	grid_station	column_name	String	col_443
attribute	grid_station	ioos_category	String	Unknown
attribute	grid_station	lter_column_description	String	Palmer LTER grid station
attribute	grid_station	lter_column_name	String	Grid Station
attribute	grid_station	lter_mscale	String	nominal
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	9.969209968386869E36
attribute	latitude	actual_range	double	-70.095, -48.35
attribute	latitude	axis	String	Y
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	column_id	long	444
attribute	latitude	column_name	String	col_444
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	lter_column_description	String	latitude measured from the equator in decimal degrees, South is negative
attribute	latitude	lter_column_name	String	Latitude
attribute	latitude	lter_mscale	String	ratio
attribute	latitude	lter_num_type	String	real
attribute	latitude	lter_units	String	º
attribute	latitude	lter_units_string	String	degree
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
attribute	latitude	units_conventions	String	EML-2.0.1,EML-2.1.0,EML-LTER
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	9.969209968386869E36
attribute	longitude	actual_range	double	-78.20833, -49.35
attribute	longitude	axis	String	X
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	column_id	long	445
attribute	longitude	column_name	String	col_445
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	lter_column_description	String	longitude measured from the Prime Meridian in decimal degrees, West is negative
attribute	longitude	lter_column_name	String	Longitude
attribute	longitude	lter_mscale	String	ratio
attribute	longitude	lter_num_type	String	real
attribute	longitude	lter_units	String	º
attribute	longitude	lter_units_string	String	degree
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
attribute	longitude	units_conventions	String	EML-2.0.1,EML-2.1.0,EML-LTER
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	9.969209968386869E36
attribute	depth	actual_range	double	0.0, 3718.14
attribute	depth	axis	String	Z
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	column_id	long	446
attribute	depth	column_name	String	col_446
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	lter_column_description	String	measurement or sample collection distance from water column surface
attribute	depth	lter_column_name	String	Depth
attribute	depth	lter_mscale	String	ratio
attribute	depth	lter_num_type	String	real
attribute	depth	lter_units	String	m
attribute	depth	lter_units_string	String	meter
attribute	depth	missing_value	double	-999.0
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
attribute	depth	units_conventions	String	AND-LTER,BNZ-LTER,CDR-LTER,EML-2.0.1,EML-2.1.0,EML-LTER,LUQ-LTER,SGS-LTER
variable	irradiance		double
attribute	irradiance	_FillValue	double	9.969209968386869E36
attribute	irradiance	actual_range	double	0.0, 100.0
attribute	irradiance	colorBarMaximum	double	100.0
attribute	irradiance	colorBarMinimum	double	0.0
attribute	irradiance	column_id	long	447
attribute	irradiance	column_name	String	col_447
attribute	irradiance	ioos_category	String	Unknown
attribute	irradiance	lter_column_description	String	The ratio of two light measurements incident on horizontal surfaces at two locations.
attribute	irradiance	lter_column_name	String	Irradiance
attribute	irradiance	lter_mscale	String	ratio
attribute	irradiance	lter_num_type	String	real
attribute	irradiance	lter_units	String	%
attribute	irradiance	lter_units_string	String	percent
attribute	irradiance	missing_value	double	-999.0
attribute	irradiance	units	String	percent
attribute	irradiance	units_conventions	String	BNZ-LTER,CAP-LTER,CDR-LTER,FCE-LTER,GCE-LTER,HBR-LTER,KNZ-LTER,MCM-LTER,NTL-LTER,NWT-LTER,PAL-LTER,PIE-LTER,SGS-LTER
variable	filter_code		byte
attribute	filter_code	_FillValue	byte	127
attribute	filter_code	actual_range	byte	-128, 126
attribute	filter_code	column_id	long	448
attribute	filter_code	column_name	String	col_448
attribute	filter_code	ioos_category	String	Unknown
attribute	filter_code	lter_column_description	String	Chlorophyll sampling code used by PAL LTER.
attribute	filter_code	lter_column_name	String	Filter Code
attribute	filter_code	lter_mscale	String	nominal
variable	nominal_station		String
attribute	nominal_station	column_id	long	449
attribute	nominal_station	column_name	String	col_449
attribute	nominal_station	ioos_category	String	Unknown
attribute	nominal_station	lter_column_description	String	Palmer LTER grid station
attribute	nominal_station	lter_column_name	String	Nominal Station
attribute	nominal_station	lter_mscale	String	nominal
variable	cast_number		short
attribute	cast_number	_FillValue	short	32767
attribute	cast_number	actual_range	short	1, 1997
attribute	cast_number	colorBarMaximum	double	100.0
attribute	cast_number	colorBarMinimum	double	0.0
attribute	cast_number	column_id	long	450
attribute	cast_number	column_name	String	col_450
attribute	cast_number	ioos_category	String	Statistics
attribute	cast_number	lter_column_description	String	reference number for ship-based over-the-side deployed and lowered instrumentation
attribute	cast_number	lter_column_name	String	Cast Number
attribute	cast_number	lter_mscale	String	interval
attribute	cast_number	lter_num_type	String	natural
attribute	cast_number	lter_units_string	String	number
attribute	cast_number	units_conventions	String	EML-2.0.1,EML-2.1.0,EML-LTER
variable	notes		String
attribute	notes	column_id	long	1734
attribute	notes	column_name	String	col_1734
attribute	notes	ioos_category	String	Unknown
attribute	notes	lter_column_description	String	text field to describe a log entry (ex. event log)
attribute	notes	lter_column_name	String	Notes
attribute	notes	lter_mscale	String	nominal
variable	platform		String
attribute	platform	column_id	long	1981
attribute	platform	column_name	String	col_1981
attribute	platform	ioos_category	String	Unknown
attribute	platform	lter_column_description	String	the type of physical staging for instrument deployment or data gathering
attribute	platform	lter_column_name	String	Platform
attribute	platform	lter_mscale	String	nominal
variable	sampling_device		String
attribute	sampling_device	column_id	long	1982
attribute	sampling_device	column_name	String	col_1982
attribute	sampling_device	ioos_category	String	Unknown
attribute	sampling_device	lter_column_description	String	Device with which a given sample was collected.
attribute	sampling_device	lter_column_name	String	Sampling Device
attribute	sampling_device	lter_mscale	String	nominal

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.