Dataset: Nutrients - OPA NH4 Data
Deployment: NH1008

Nutrients - OPA NH4+ Analysis

Principal Investigator:

David M. Checkley (University of California-San Diego Scripps, UCSD-SIO)

Co-Principal Investigator:

Michael Dagg (Louisiana Universities Marine Consortium, LUMCON)

George A. Jackson (Texas A&M University, TAMU)

Contact:

David M. Checkley (University of California-San Diego Scripps, UCSD-SIO)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Zooplankton feeding at the base of the particle maximum: Gatekeepers of the Vertical Flux? (GATEKEEPERS)

Current State:

Final no updates expected

Version:

20 September 2012

Deployment Synonyms:

GATEKEEPERS

Version Date:

2012-09-20

Data URL:

https://www.bco-dmo.org/dataset-deployment/455444/data

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Description

Nutrients - OPA NH4+ Analysis

Methods & Sampling

Dataset acquisition description

OPA Method for NH4+ Analysis

Data Processing Description

Dataset Processing Description

OPA Method for NH4+ Analysis

BCO-DMO Processing/Edits
- Generated from original file "NH4_OPA_27Aug2012_JFB.xls" contributed by Jessica Forrest-Baldini
- CTD UTC Date, UTC Time, Lat, Lon inserted from CTD station data (CTD headers)
- PDT Date reformatted to YYYYMMDD
- Parameter names modified to conform to BCO-DMO conventions (blanks to underscores, etc.)
- "nd" (no data) inserted in black cells

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0927863	NSF Division of Ocean Sciences
OCE-0928139	NSF Division of Ocean Sciences
OCE-0928425	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird SBE 911plus

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

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

Supplied Name	Supplied description	Supplied Units	Standard Name
CTD_Cast	CTD Cast Number/Id	Dimensionless	cast
ISO_DateTime_UTC	CTD Date/Time from Header File (UTC) ISO formatted	YYYY-MM-DDTHH:MM:SS.xxZ	ISO_DateTime_UTC
Date	CTD Date from Header File (UTC)	YYYYMMDD	date
Time	CTD Time from Header File (UTC)	HHMMSS	time
Latitude	CTD Latitude from Header File (South is negative)	decimal degrees	lat
Longitude	CTD Longitude from Header File (West is negative)	decimal degrees	lon
CTD_Start_Date	CTD Start Date (PDT)	YYYYMMDD	date_begin
CTD_Start_Time	CTD Start Time (PDT)	HHMM	time_begin
Depth	Sample Depth	meters	depth
NH4	Ammonia	umol/L	NH4

Database

Contribute Data

Dataset: Nutrients - OPA NH4 Data
Deployment: NH1008

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Nutrients - OPA NH4 DataDeployment: NH1008

Dataset acquisition description

Dataset Processing Description

Dataset: Nutrients - OPA NH4 Data
Deployment: NH1008