Dataset: DIC
Deployment: TN277

Dissolved inorganic carbon

Principal Investigator:

Zackary I. Johnson (Duke University)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Seasonal and decadal changes in temperature drive Prochlorococcus ecotype distribution patterns (POWOW)

Current State:

Final no updates expected

Version:

22 Oct 2012

Deployment Synonyms:

POWOW1

Version Date:

2012-10-22

Data URL:

https://www.bco-dmo.org/dataset-deployment/455487/data

Expand/Collapse All

Description

Dissolved inorganic carbon from samples collected during the POWOW1 (TN277) and POWOW2 (KM1301) cruises.

Methods & Sampling

Dataset acquisition description

DIC was measured on mercuric chloride poisoned samples by acidification and subsequent quantification of released CO2 using a CO2 detector (Li-Cor 7000). DIC samples were collected following recommended procedures (Dickson et al., 2007) and measurements were calibrated against Certified Reference Materials provided by Dr. A. G. Dickson at Scripps Institution of Oceanography (SIO), University of California, San Diego (UCSD).

Data Processing Description

Dataset Processing Description

BCO-DMO edits made:
- Parameter names have been changed to conform to BCO-DMO conventions.
- month_utc, day_utc, year, and time_utc were added, based on the original ISO_DateTime_UTC field.
- Rosette bottle numbers were added from the CTD cast sheets.
- Replaced 'NaN' with 'nd' to indicate 'no data'.

NOTE: During cast CTD01 of POWOW1, all bottles were fired at 25m depth. The bottle numbers displayed in the data for CTD01 of POWOW1 are those bottles from which DIC was measured.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1031064	NSF Division of Ocean Sciences

Instruments

LI-COR LI-7000 Gas Analyzer

Supplied Description:

Released CO2 was quantified using a Li-Cor 7000 CO2 detector.

Instrument Type

Generic Name: LI-COR LI-7000 Gas Analyzer

Acronym: LI-COR LI-7000

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/382/

Generic Description:

The LI-7000 CO2/H2O Gas Analyzer is a high performance, dual cell, differential gas analyzer. It was designed to expand on the capabilities of the LI-6262 CO2/ H2O Gas Analyzer. A dichroic beam splitter at the end of the optical path provides radiation to two separate detectors, one filtered to detect radiation absorption of CO2 and the other to detect absorption by H2O. The two separate detectors measure infrared absorption by CO2 and H2O in the same gas stream. The LI-7000 CO2/ H2O Gas Analyzer is a differential analyzer, in which a known concentration (which can be zero) gas is put in the reference cell, and an unknown gas is put in the sample cell.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_name	Cruise identifier (POWOW1 = TN277 = R/V Thomas G. Thompson cruise 277; POWOW2 = KM1301 = R/V Kilo Moana cruise 1301).	text	cruise_name
cast	Consecutive CTD cast number. CTD numbers are unique and sequential across stations.	unitless	cast
lat	Latitude at start of CTD cast. Positive = North.	decimal degrees	lat
lon	Longitude at start of CTD cast. Positive = East.	decimal degrees	lon
depth_w	Depth of the water (bottom depth) at sampling station.	meters	depth_w
month_utc	2-digit month of year, UTC.	mm (01 to 12)	month_utc
day_utc	2-digit day of month, UTC.	dd (01 to 31)	day_utc
year	4-digit year. in YYYY format	unitless	year
time_utc	Time (UTC) at start of sample collection, 24-hour clock.	HHMM.mm	time_utc
ISO_DateTime_UTC	Date/Time (UTC) ISO8601 formatted. T indicates start of time string; Z indicates UTC.	YYYY-mm-ddTHH:MM:SS.ssZ	ISO_DateTime_UTC
depth	Sample depth.	meters	depth
bot	Rosette position of the bottle.	unitless	bot
DIC	Dissolved inorganic carbon, uM Carbon.	uM	DIC

Database

Contribute Data

Dataset: DIC
Deployment: TN277

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: DICDeployment: TN277

Dataset acquisition description

Dataset Processing Description

Dataset: DIC
Deployment: TN277