Dataset: nutrients_major

Name: Concentration of major dissolved nutrients sampled from CTD hydrocasts from R/V Melville cruise MV1008 in the Costa Rica Dome in 2010 (CRD FLUZiE project)
Published: 2014-05-29
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.516174.1

Spatial Extent: N:10.3 E:-86.735 S:6.622 W:-92.987

Temporal Extent: 2010-06-24 - 2010-07-24

Project:

Costa Rica Dome FLUx and Zinc Experiments (CRD FLUZiE)

Program:

Integrated Marine Biogeochemistry and Ecosystem Research -US (IMBER-US)

Ocean Carbon and Biogeochemistry (OCB)

Principal Investigator:

Michael R. Landry (University of California-San Diego, UCSD-SIO)

BCO-DMO Data Manager:

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

Version:

Version Date:

2014-05-29

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Concentration of major dissolved nutrients sampled from CTD hydrocasts from R/V Melville cruise MV1008 in the Costa Rica Dome in 2010 (CRD FLUZiE project)

Abstract:

Concentration of major dissolved nutrients (nitrate, nitrite, phosphate and silicate) sampled from CTD hydrocasts on the MV1008 cruise in the Costa Rica Dome (CRD) region of the Eastern Tropical Pacific Ocean.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2014-05-29	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.516174.1	2019-12-11

Description

Methods & Sampling

Seawater samples were collected from 8 depths throughout the water column during CTD casts. 50 ml of sample from each depth was filtered directly from the Niskin bottle through a 0.1-um filter capsule and frozen at -80°C for the analysis of major nutrients (nitrate, nitrite, phosphate and silicate) back on shore. Major nutrient concentrations were estimated using Flow Injection Analysis (FIA) at the Analytical Facility, Marine Science Institute, UCSB. Samples were run on a Lachat Instuments QuikChem 8000 FIA.

Data Processing Description

BCO-DMO assumes dates provided are in local time, based on comparing cast events to the MV1008 event log.

Data Files

File
nutrients.csv (Comma Separated Values (.csv), 19.56 KB) MD5:021290b0a8ac41bb4e5bcc0300a6c410 Primary data file for dataset ID 516174

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0826626

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
MV1008	CRD FLUZiE	2010-06-22	R/V Melville	Michael R. Landry (Chief Scientist)	data info

Instruments

Flow Injection Analyzer

Supplied Name: Lachat Instuments QuikChem 8000 FIA

Supplied Description:

Major nutrient concentrations were estimated using Flow Injection Analysis (FIA) at the Analytical Facility, Marine Science Institute, UCSB. Samples were run on a Lachat Instuments QuikChem 8000 FIA.

Instrument Type

Generic Name: Flow Injection Analyzer

Acronym: FIA

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB36/

Generic Description:

An instrument that performs flow injection analysis. Flow injection analysis (FIA) is an approach to chemical analysis that is accomplished by injecting a plug of sample into a flowing carrier stream. FIA is an automated method in which a sample is injected into a continuous flow of a carrier solution that mixes with other continuously flowing solutions before reaching a detector. Precision is dramatically increased when FIA is used instead of manual injections and as a result very specific FIA systems have been developed for a wide array of analytical techniques.

Niskin bottle

Supplied Description:

50 ml of sample from each depth was filtered directly from the Niskin bottle through a 0.1-um filter capsule and frozen at -80°C for the analysis of major nutrients.

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

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
event	Number referring to the particular activity (event) on the FluZiE cruise.	integer	event
cast	CTD Cast number from the FluZiE cruise.	integer	cast
date_local	Date of CTD cast (assumed to be in the local time zone). format: mmddyyyy	unitless	date
lon	Longitude in degrees East.	decimal degrees	lon
lat	Latitude in degrees North.	decimal degrees	lat
depth	Sample depth.	meters	depth
cycle	Type and number of cruise sampling event. Either "Stn_n" or "Cycle_n". A transect of stations was sampled from 29 June to 03 July. Five quasi-Lagrangian experiments called "cycles" were conducted during the remainder of the cruise.	text	no_bcodmo_term
nitrate	Nitrate (NO3) concentration.	micromolar (uM)	NO3
nitrite	Nitrite (NO2) concentration.	micromolar (uM)	NO2
N_N	Nitrate + Nitrite concentration (NO3 + NO2).	micromolar (uM)	NO3_NO2
phosphate	Phosphate (PO4) concentration.	micromolar (uM)	PO4
silicic_acid	Silicic acid concentration.	micromolar (uM)	Si_acid

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