Dataset: toc
Deployment: TT049

Total organic carbon profile data

Principal Investigator:

Dr Edward T. Peltzer (Monterey Bay Aquarium Research Institute, MBARI)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. JGOFS Arabian Sea (Arabian Sea)

Version:

May 8, 2001

Deployment Synonyms:

TTN049, TN049, TTN-049

Version Date:

2001-05-08

Data URL:

https://www.bco-dmo.org/dataset-deployment/450642/data

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Description

Total organic carbon profile data

Methods & Sampling

Dataset acquisition description

See Platform deployments for cruise specific documentation

Deployment-specific acquisition description

PI: Edward Peltzer of: Woods Hole Oceanographic Institution dataset: Total organic carbon profile data dates: July 18, 1995 to August 13, 1995 location: N: 22.5268 S: 9.911 W: 57.2997 E: 68.7507 project/cruise: Arabian Sea/TTN-049 - Process Cruise 4 (Middle SW Monsoon) ship: Thomas Thompson at sea analysts: Edward Peltzer (WHOI) and Nancy Hayward (WHOI) The total organic carbon analyses in the U.S. JGOFS Arabian Sea program were performed as a collaborative effort of the laboratories of Edward Peltzer (WHOI) and Dennis Hansell (BBSR). Samples for this leg were analyzed at sea by Edward Peltzer (WHOI) and Nancy Hayward (WHOI). See the documentation for a complete description of the methodology used, blank correction protocols and data units. PLEASE NOTE: These samples were NOT filtered; ergo they are TOTAL ORGANIC CARBON (TOC) analyses, not dissolved organic carbon analyses (DOC).

A note from the Investigator

For Process 4 Station 25 (S6), casts 01 and 03 (event no's 08051242 and 08051535) have been removed due to bad data. These samples were collected in 30 mL vials and analyzed on-shore after the cruise unlike all of the rest of the samples for this leg which were collected in 100 mL bottles and analyzed at sea. We suspect that the teflon cap liners leaked during storage and transport contaminating the samples.

Edward T. Peltzer,III
etp3@mbari.org

Data Processing Description

Dataset Processing Description

   Methods reported in:
 
   Peltzer, Edward T. (1993).  Shipboard determination of total organic carbon by
     a high temperature combustion/direct injection technique.  U.S. Joint Global
     Ocean Flux Study - Equatorial Pacific Protocols, 1993, section 21A.
 
   The EqPac methods were followed explicity on the Arabian Sea Process cruises
     with two exceptions:
 
        1. For Process cruises 1, 2 and 4, the WHOI custom built HTC/DI-TOC
           analyzer was used.  For Process cruises 6 and 7, the BBSR custom
           built HTC/DI-TOC analyzer was used.
 
        2. Low carbon water (LCW) prepared using a commercial Milli-Q UV/TOC (R)
           system was used to measure the instrument blank as opposed to the
           carbon free distilled water (CFDW) that was used in EqPac.  For all
           legs, the LCW was assigned a background TOC value of 0 uMC.

Deployment-specific processing description

<pre>
Methods reported in:

Peltzer, Edward T. (1993). Shipboard determination of total organic carbon by
a high temperature combustion/direct injection technique. U.S. Joint Global
Ocean Flux Study - <a href="http://usjgofs.whoi.edu/eqpac-docs/proto-21A.html">Equatorial Pacific Protocols, 1993, section 21A.</a>

The EqPac methods were followed explicity on the Arabian Sea Process cruises
with two exceptions:

1. For Process cruises 1, 2 and 4, the WHOI custom built HTC/DI-TOC
analyzer was used. For Process cruises 6 and 7, the BBSR custom
built HTC/DI-TOC analyzer was used.

2. Low carbon water (LCW) prepared using a commercial Milli-Q UV/TOC (R)
system was used to measure the instrument blank as opposed to the
carbon free distilled water (CFDW) that was used in EqPac. For all
legs, the LCW was assigned a background TOC value of 0 uMC.

</pre>

More information about this dataset deployment

Funding

Award Number	Funding Source
unknown Arabian Sea NSF	National Science Foundation

Instruments

Niskin bottle

Supplied Name: Niskin Bottle

Supplied Description:

CTD/Niskin Rosette bottles.

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
event	event number, from event log		event
sta	station number, from event log		no_bcodmo_term
sta_std	Arabian Sea standard station identifier		no_bcodmo_term
cast	CTD cast number, from event log		cast
lat	latitude (minus = South)	decimal degrees	lat
lon	longitude (minus = West)	decimal degrees	lon
bot	CTD rosette bottle number		no_bcodmo_term
depth	sample depth (calculated from pressure)	meters	depth
TOC	total organic carbon	micromoles C/liter	no_bcodmo_term
TOC_kg	total organic carbon	micromoles C/kilogram	no_bcodmo_term
press	sample depth reported as pressure	decibars	press

Database

Contribute Data

Dataset: toc
Deployment: TT049

Dataset acquisition description

Deployment-specific acquisition description

A note from the Investigator

Dataset Processing Description

Deployment-specific processing description

Database

Contribute Data

Dataset: tocDeployment: TT049

Dataset acquisition description

Deployment-specific acquisition description

A note from the Investigator

Dataset Processing Description

Deployment-specific processing description

Dataset: toc
Deployment: TT049