Dataset: NH4_NO3_PO4_SiO2

Name: Nutrient measurements from Niskin bottle samples from R/V Oceanus OC415-02, OC415-04 cruises in the Sargasso Sea in 2005 (EDDIES project)
Published: 2007-03-13
Keywords: oceans

View Data: to access data, check the deployments below

Cite This Dataset

Project:

Eddies Dynamics, Mixing, Export, and Species composition (EDDIES)

Program:

Ocean Carbon and Biogeochemistry (OCB)

Principal Investigator:

James R. Ledwell (Woods Hole Oceanographic Institution, WHOI)

Technician:

Paul B. Henderson (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

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

Version:

13 March 2007

Version Date:

2007-03-13

Validated:

Yes

Current State:

Final no updates expected

Nutrient measurements from Niskin bottle samples from R/V Oceanus OC415-02, OC415-04 cruises in the Sargasso Sea in 2005 (EDDIES project)

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2007-03-13	National Oceanographic Data Center (NODC)	0081705	2011-11-28

Description

Methodology: none provided with data. Analyses performed by Paul Henderson (phenderson@whoi.edu) at WHOI Nutrients Facility.

DMO note: The SiO4 silicate data were originally called SiO2; Paul Henderson in the nutrients facility confirmed the data are SiO4. Cast number was matched in the Niskin bottle data to retrieve event, date, time, lon and lat, as well as depth_n, press and depth.

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
OC415-02	EDDIES 2005 Tracer 1 OC415-2 OC415_T1	2005-07-18	R/V Oceanus	James R. Ledwell (Chief Scientist)	data info
OC415-04	EDDIES 2005 Tracer 2 OC415-4 OC415_T2	2005-08-29	R/V Oceanus	James R. Ledwell (Chief Scientist)	data info

Instruments

Niskin bottle

Supplied Description:

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	unique sampling event number from cruise event log	YYYYMMDDhhmm	event
date	date of cast (UTC)	YYYYMMDD	date
time	time of cast (UTC)	hhmm	time
lon	longitude, negative denotes West	decimal degrees	lon
lat	latitude, negative denotes South	decimal degrees	lat
cast	CTD cast number	dimensionless	cast
Nis	Niskin bottle order number	dimensionless	bottle
depth_n	nominal depth	meters	depth_n
press	pressure, from CTD	decibars	press
depth	depth, calculated from CTD pressure	meters	depth
SiO4	Silicate	micromoles/liter	SiO4
PO4	Phosphate	micromoles/liter	PO4
NO2_NO3	Nitrite plus Nitrate (NO2 in this region is essentially non-detectable)	micromoles/liter	NO3_NO2
bot	Niskin bottle number	dimensionless	bot
SID_nuts	sample ID; Nutrients	alphanumeric	sample

Status message

Database

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Dataset: NH4_NO3_PO4_SiO2