ERDDAP > info > bcodmo_dataset_3753

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	[pH] - Spectrophotometric pH measured at 25 degrees C using the total hydrogen ion scale from R/V Thomas G. Thompson and R/V Kilo Moana cruises TN277, KM1301, KM1312 in the Eastern North Pacific Ocean from 2012-2013 (POWOW project) (Seasonal and decadal changes in temperature drive Prochlorococcus ecotype distribution patterns)		F   I   M	background			BCO-DMO	bcodmo_dataset_3753

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,.esriCsv,.geoJson,.odvTxt
attribute	NC_GLOBAL	acquisition_description	String	pH was measured spectrophotometrically (Clayton and Byrne, 1993) in triplicate at standard temperature (25 degrees C) immediately following collection. pH samples were collected following recommended procedures (Dickson et al., 2007).
attribute	NC_GLOBAL	awards_0_award_nid	String	55018
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1031064
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1031064
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	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	pH PI: Zackary Johnson (Duke University) Version History: Dataset updated: 08 Sept 2014 (current version) Dataset updated: 11 March 2014 Original data: 22 Oct 2012 Note: All bottles were fired at 25m depth during CTD01 of POWOW1 cruise.
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	2012-10-23T18:08:28Z
attribute	NC_GLOBAL	date_modified	String	2019-03-05T18:09:37Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.3753.3
attribute	NC_GLOBAL	Easternmost_Easting	double	-118.316
attribute	NC_GLOBAL	geospatial_lat_max	double	46.6888
attribute	NC_GLOBAL	geospatial_lat_min	double	21.3428
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-118.316
attribute	NC_GLOBAL	geospatial_lon_min	double	-160.6166
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	4497.0
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://www.bco-dmo.org/dataset/3753
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Spectrophotometer
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	6257
attribute	NC_GLOBAL	instruments_0_description	String	An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB20/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Spectrophotometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	707
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Spectrophotometer
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, bot, cast, chemical, chemistry, cruise, cruise_name, data, dataset, date, day, day_utc, depth, depth_w, dmo, earth, Earth Science > Oceans > Ocean Chemistry > pH, erddap, iso, latitude, longitude, management, month, month_utc, name, ocean, oceanography, oceans, office, preliminary, reported, scale, science, sea, sea_water_ph_reported_on_total_scale, seawater, time, time_utc, total, water, year
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/3753/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/3753
attribute	NC_GLOBAL	Northernmost_Northing	double	46.6888
attribute	NC_GLOBAL	param_mapping	String	{'3753': {'lat': 'master - latitude', 'depth': 'flag - depth', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/3753/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Duke University
attribute	NC_GLOBAL	people_0_person_name	String	Zackary I. Johnson
attribute	NC_GLOBAL	people_0_person_nid	String	50749
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	POWOW
attribute	NC_GLOBAL	projects_0_acronym	String	POWOW
attribute	NC_GLOBAL	projects_0_description	String	Project also known as 'Prochlorococcus Of Warming Ocean Waters' (POWOW). The two numerically-dominant ecotypes of the marine cyanobacterium Prochlorococcus partition the surface ocean niche latitudinally, with ecotype eMIT9312 dominant in the 30 degree N to 30 degree S region and eMED4 dominant at higher latitudes. These ecotypes may account for 25-50% of primary production in open ocean ecosystems, but this percentage is dependent on which ecotype dominates. The relative abundance of the two ecotypes follows a log-linear relationship with temperature, with the transition from eMIT9312 to eMED4 occurring at approx. 18 degrees C. From these descriptive data, it has been hypothesized that temperature is the primary driver of relative abundance. Their contribution to net primary production, however, appears to be independent of temperature, suggesting temperature regulates ecotype dominance through photosynthesis-independent mechanisms. To test these hypotheses, the PIs are undertaking a series of field and lab studies to investigate the effect of temperature change on the distribution of these ecotypes. Two cruises in the North Pacific will trace the transitions from eMIT9312- to eMED4-dominated regions, with one cruise during the winter and the other during summer. They have hypothesized that the ratio of ecotype abundance will move latitudinally with the seasonal shift in temperature gradient: migration of the 18 degrees C isotherm northward in the summer will be matched by a similar migration of the 1:1 ecotype transition point. Multiple crossings of the 18 degrees C isotherm are proposed, and the summer cruise will also follow the isotherm to the Western US coast to gain insight on physical and geochemical influences. Environmental variables such as nutrient concentrations, light/mixing depths, and virus /grazing based mortality, which may impinge on the relationship between temperature and ecotype ratio, will be assessed through a series of multivariate analyses of the collected suite of physical, chemical and biological data. Seasonal comparisons will be complemented with on-deck incubations and lab competition assays (using existing and new isolates) that will establish, for the first time, how fitness coefficients of these ecotypes relate to temperature. As latitudinal shifts in temperature gradient and migration of ecotypes during seasonal warming likely share common features with high latitude warming as a consequence of climate change, the investigator's analyses will contribute important biological parameters (e.g., abundances, production rates, temperature change coefficients) for modeling biological and biogeochemical responses to climate change. This research will be integrated with that of committed collaborators, generating data sufficient for ecosystem-scale characterizations of the contributions of temperature (relative to other forcing factors) in constraining the range and seasonal migration of these numerically dominant marine phototrophs. Publications produced as result of this research: Rowe, J.M., DeBruyn, J.M., Poorvin, L., LeCleir, G.R., Johnson, Z.I., Zinser, E.R., and Wilhelm, S.W. 2012. Viral and bacterial abundance and production in the Western Pacific Ocean and the relation to other oceanic realms. FEMS Microbiology Ecology, 72, p. 359. DOI: 10.1111/j.1574-6941.2011.01223.x Morris, J.J., Lenski, R.E. and E.R. Zinser. 2012. The Black Queen Hypothesis: Evolution of Dependencies through Adaptive Gene Loss. mBio, 3, p. e00036-12. DOI: 10.1128/mBio.00036-12 Morris, J.J., Johnson, Z.I., Szul, M.J., Keller, M., and Zinser, E.R. 2011. Dependence of the cyanobacterium Prochlorococcus on hydrogen peroxide scavenging microbes for growth at the ocean's surface. PLoS One, 6(2), p. 16805. DOI:10.1371/journal.pone.0016805 Ringuet, S., Sassano, L., and Johnson, Z.I. 2011. A suite of microplate reader-based colorimetric methods to quantify ammonium, nitrate, orthophosphate and silicate concentrations for aquatic nutrient monitoring. Journal of Environmental Monitoring. DOI:10.1039/C0EM00290A Ritchie, A.E. and Johnson, Z.I. 2012. Abundance and genetic diversity of aerobic anoxygenic phototrophic bacteria of coastal regions of the Pacific Ocean. Applied and Environmental Microbiology, 78, p. 2858. DOI: 10.1128/AEM.06268-11
attribute	NC_GLOBAL	projects_0_end_date	String	2014-09
attribute	NC_GLOBAL	projects_0_geolocation	String	Eastern North Pacific Ocean
attribute	NC_GLOBAL	projects_0_name	String	Seasonal and decadal changes in temperature drive Prochlorococcus ecotype distribution patterns
attribute	NC_GLOBAL	projects_0_project_nid	String	2237
attribute	NC_GLOBAL	projects_0_project_website	String	http://oceanography.ml.duke.edu/johnson/research/powow/
attribute	NC_GLOBAL	projects_0_start_date	String	2010-10
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	Southernmost_Northing	double	21.3428
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Spectrophotometric pH measured at 25 degrees C using the total hydrogen ion scale from R/V Thomas G. Thompson and R/V Kilo Moana cruises TN277, KM1301, KM1312 in the Eastern North Pacific Ocean from 2012-2013 (POWOW project)
attribute	NC_GLOBAL	time_coverage_end	String	2013-07-27T19:10:00.00Z
attribute	NC_GLOBAL	time_coverage_start	String	2012-03-01T06:43:00.00Z
attribute	NC_GLOBAL	title	String	[pH] - Spectrophotometric pH measured at 25 degrees C using the total hydrogen ion scale from R/V Thomas G. Thompson and R/V Kilo Moana cruises TN277, KM1301, KM1312 in the Eastern North Pacific Ocean from 2012-2013 (POWOW project) (Seasonal and decadal changes in temperature drive Prochlorococcus ecotype distribution patterns)
attribute	NC_GLOBAL	version	String	3
attribute	NC_GLOBAL	Westernmost_Easting	double	-160.6166
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	cruise_name		String
attribute	cruise_name	bcodmo_name	String	Cruise Name
attribute	cruise_name	description	String	Cruise identifier (POWOW1 = TN277 = R/V Thomas G. Thompson cruise 277; POWOW2 = KM1301 = R/V Kilo Moana cruise 1301).
attribute	cruise_name	long_name	String	Cruise Name
attribute	cruise_name	units	String	text
variable	cast		String
attribute	cast	bcodmo_name	String	cast
attribute	cast	description	String	Consecutive CTD cast number. CTD numbers are unique and sequential across stations.
attribute	cast	long_name	String	Cast
attribute	cast	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	21.3428, 46.6888
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	Latitude at start of CTD cast. Positive = North.
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	-160.6166, -118.316
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	Longitude at start of CTD cast. Positive = East.
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	depth_w		short
attribute	depth_w	_FillValue	short	32767
attribute	depth_w	actual_range	short	349, 6055
attribute	depth_w	bcodmo_name	String	depth_w
attribute	depth_w	colorBarMaximum	double	8000.0
attribute	depth_w	colorBarMinimum	double	-8000.0
attribute	depth_w	colorBarPalette	String	TopographyDepth
attribute	depth_w	description	String	Depth of the water (bottom depth) at sampling station.
attribute	depth_w	long_name	String	Depth
attribute	depth_w	standard_name	String	depth
attribute	depth_w	units	String	meters
variable	month_utc		String
attribute	month_utc	bcodmo_name	String	month_utc
attribute	month_utc	description	String	2-digit month of year, UTC.
attribute	month_utc	long_name	String	Month Utc
attribute	month_utc	units	String	mm (01 to 12)
variable	day_utc		String
attribute	day_utc	bcodmo_name	String	day_utc
attribute	day_utc	description	String	2-digit day of month, UTC.
attribute	day_utc	long_name	String	Day Utc
attribute	day_utc	units	String	dd (01 to 31)
variable	year		short
attribute	year	_FillValue	short	32767
attribute	year	actual_range	short	2012, 2013
attribute	year	bcodmo_name	String	year
attribute	year	description	String	4-digit year. in YYYY format
attribute	year	long_name	String	Year
attribute	year	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/
attribute	year	units	String	unitless
variable	time_utc		String
attribute	time_utc	bcodmo_name	String	time_utc
attribute	time_utc	description	String	Time (UTC) at start of sample collection, 24-hour clock.
attribute	time_utc	long_name	String	Time Utc
attribute	time_utc	units	String	HHMM.mm
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.33058418E9, 1.3749522E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	Date/Time (UTC) ISO8601 formatted. T indicates start of time string; Z indicates UTC.
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO Date Time UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	source_name	String	ISO_DateTime_UTC
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	time_precision	String	1970-01-01T00:00:00.00Z
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	2.0, 4497.0
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	Sample depth.
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	bot		String
attribute	bot	bcodmo_name	String	bot
attribute	bot	description	String	Rosette position of the bottle.
attribute	bot	long_name	String	Bot
attribute	bot	units	String	unitless
variable	pH		float
attribute	pH	_FillValue	float	NaN
attribute	pH	actual_range	float	7.356, 8.109
attribute	pH	bcodmo_name	String	pH
attribute	pH	colorBarMaximum	double	9.0
attribute	pH	colorBarMinimum	double	7.0
attribute	pH	description	String	Spectrophotometric pH measured at 25 degrees Celsius using the total hydrogen ion scale.
attribute	pH	long_name	String	Sea Water Ph Reported On Total Scale
attribute	pH	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/
attribute	pH	units	String	unitless; pH scale

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.