Dataset: Absorption coefficients

Name: Absorption coefficients and fluorescence measurements from CTD bottle samples collected during the R/V Kilo Moana cruise KM1427 in the North Pacific Ocean in December of 2014
Published: 2018-05-11
Keywords: oceans

View Data: Data not available yet

Cite This Dataset

Spatial Extent: N:22.75 E:-158 S:22.75 W:-158

Temporal Extent: 2014-12 - 2014-12

Project:

Relating the Optical Properties of CDOM within the Ocean Basins to Source and Structure (CDOM Optical Properties)

Principal Investigator:

Neil V. Blough (University of Maryland - College Park, UMD)

Co-Principal Investigator:

Rossana Del Vecchio (University of Maryland - College Park, UMD)

Contact:

Neil V. Blough (University of Maryland - College Park, UMD)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2018-05-11

Restricted:

Validated:

Current State:

Preliminary and in progress

Absorption coefficients and fluorescence measurements from CTD bottle samples collected during the R/V Kilo Moana cruise KM1427 in the North Pacific Ocean in December of 2014

Abstract:

Bottle samples were collected during 0-4500 meter depth CTD deployments during R/V Kilo Moana cruise KM1427 in the North Pacific Ocean in December of 2014. Absorption coefficients and fluorescence measurements were made using the bottle samples.

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Description

This dataset has been submitted to BCO-DMO and is in the process of being served.

Related Datasets:

CTD profiles: https://www.bco-dmo.org/dataset/734763
TOC: https://www.bco-dmo.org/dataset/735956

Methods & Sampling

Water samples were collected using a CTD rosette with Niskin bottles and immediately transferred into acid rinsed carboys (20 L). Samples were then filtered through a 0.2 mm maxi capsule filter (Pall Corporation) prior to the acquisition of measurements.

Absorption measurements were collected with a WPI spectrometer while fluorescence measurements were gathered with a Horiba Fluoromax-4 luminescence spectrometer.

Data Processing Description

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1357411

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KM1427		2014-12-08	R/V Kilo Moana	Samuel Wilson (Chief Scientist)	data info

Instruments

Benchtop pH Meter

Supplied Name:

Supplied Description:

Thermo-Scientific micro pH electrode coupled to an Orion 4 Star pH ISE benchtop meter

Instrument Type

Generic Name: Benchtop pH Meter

Generic Description:

An instrument consisting of an electronic voltmeter and pH-responsive electrode that gives a direct conversion of voltage differences to differences of pH at the measurement temperature. (McGraw-Hill Dictionary of Scientific and Technical Terms)

This instrument does not map to the NERC instrument vocabulary term for 'pH Sensor' which measures values in the water column. Benchtop models are typically employed for stationary lab applications.

CTD Sea-Bird SBE 911plus

Supplied Name: SBE 911plus / 917plus CTD

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

Spectrometer

Supplied Name: Horiba Fluoromax-4 luminescence spectrometer

Supplied Description:

Instrument Type

Generic Name: Spectrometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0460/

Generic Description:

A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum.

Spectrometer

Supplied Name: WPI spectrometer

Supplied Description:

Instrument Type

Generic Name: Spectrometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0460/

Generic Description:

A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
a280	absorption coefficient at 280 nm	per meter (m-1)	absorption_coefficient
a350	absorption coefficient at 350 nm	per meter (m-1)	absorption_coefficient
sp_a280	specific absorption coefficient at 280 nm	m-1 mg-1 C L	absorption_coefficient
sp_a350	specific absorption coefficient at 280 nm	m-1 mg-1 C L	absorption_coefficient
Depth	Water depth	meters (m)	depth
Spec_Slope	unknown	per nanometer (nm-1)	no_bcodmo_term
F280_305	fluorescence emission (exc280/em305)	quinine sulphate units (QSU)	no_bcodmo_term
F350_450	fluorescence emission (exc350/em450)	quinine sulphate units (QSU)	no_bcodmo_term
pH	pH	pH units	pH

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Database

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Dataset: Absorption coefficients