Dataset: chla_fluor
Deployment: MV1008

Fluorometrically measured, extracted concentrations of chlorophyll a sampled from CTD hydrocasts.

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)

Project:

Costa Rica Dome FLUx and Zinc Experiments (CRD FLUZiE)

Current State:

Final no updates expected

Version:

10 Sept 2014

Version Date:

2014-09-10

Data URL:

https://www.bco-dmo.org/dataset-deployment/527943/data

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Description

Fluorometrically measured, extracted concentrations of chlorophyll a sampled from CTD hydrocasts on the MV1008 cruise in the Costa Rica Dome (CRD) region of the Eastern Tropical Pacific Ocean.

Methods & Sampling

Dataset acquisition description

Seawater samples were collected from 8 depths throughout the water column during CTD casts. Replicate samples of 280 ml from each depth were concentrated onto 25-mm GF/F filters and extracted in 7 mL of 90% acetone for 24 h (-20 degrees C, dark). Prior to analysis, the tube contents were agitated and equilibrated to room temperature in the dark. The filters were then removed from the tubes and Chl a fluorescence measured on a Turner Model 10AU fluorometer. Calculation as in Strickland and Parsons (1968).

Data Processing Description

Dataset Processing Description

BCO-DMO assumes dates provided are in local time, based on comparing cast events to the MV1008 event log. BCO-DMO transposed original data to serve replicates as rows rather than columns.

More information about this dataset deployment

Funding

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

Instruments

CTD Sea-Bird 9

Supplied Name: CTD SBE 9

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird 9

Acronym: CTD SBE 9

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

The Sea-Bird SBE 9 is a type of CTD instrument package. The SBE 9 is the Underwater Unit and is most often combined with the SBE 11 Deck Unit (for real-time readout using conductive wire) when deployed from a research vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorometer, altimeter, etc.). Note that in most cases, it is more accurate to specify SBE 911 than SBE 9 since it is likely a SBE 11 deck unit was used. 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.

Turner Designs Fluorometer 10-AU

Supplied Name: Turner Model 10AU fluorometer

Supplied Description:

Chl a fluorescence was measured on a Turner Model 10AU fluorometer.

Instrument Type

Generic Name: Turner Designs Fluorometer 10-AU

Acronym: Turner Fluorometer 10-AU

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0393/

Generic Description:

The Turner Designs 10-AU Field Fluorometer is used to measure Chlorophyll fluorescence. The 10AU Fluorometer can be set up for continuous-flow monitoring or discrete sample analyses. A variety of compounds can be measured using application-specific optical filters available from the manufacturer. (read more from Turner Designs, turnerdesigns.com, Sunnyvale, CA, USA)

Parameters

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
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
date_local	Date of CTD cast (assumed to be in the local time zone).	mmddyyyy	date_local
lat	Latitude in degrees North.	decimal degrees	lat
lon	Longitude in degrees East.	decimal degrees	lon
depth	Sample depth.	meters	depth
replicate	Replicate number (1 or 2).	integer	replicate
chl_a	Chlorophyll a fluorescence.	micrograms Chl a per liter (ug/L)	chl_a

Database

Contribute Data

Dataset: chla_fluor
Deployment: MV1008

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: chla_fluorDeployment: MV1008

Dataset acquisition description

Dataset Processing Description

Dataset: chla_fluor
Deployment: MV1008