Dataset: Chlorophyll a

Name: Discrete fluorometric chlorophyll-a data from RVIB Nathaniel B. Palmer NBP1005 in the Amundsen Sea, Southern Ocean 73 S 115 W from 2010-2011 (ASPIRE project)
Published: 2015-01-29
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-71.573333 E:-110.964733 S:-74.169433 W:-118.279833

Project:

Amundsen Sea Polynya International Research Expedition (ASPIRE)

Principal Investigator:

Kevin R. Arrigo (Stanford University)

Contact:

Gert van Dijken (Stanford University)

BCO-DMO Data Manager:

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

Version:

29 January 2015

Version Date:

2015-01-29

Validated:

Yes

Current State:

Final no updates expected

Discrete fluorometric chlorophyll-a data from RVIB Nathaniel B. Palmer NBP1005 in the Amundsen Sea, Southern Ocean 73 S 115 W from 2010-2011 (ASPIRE project)

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Methods & Sampling

Seawater samples collected from Niskin bottles were filtered over 25 mm Whatman GF/F filters under low vacuum pressure, extracted overnight at 4C in 5mL 90% acetone and analyzed on a Turner Model 10AU fluorometer before and after acidification. The fluorometer was calibrated with pure chlorophyll a from Sigma.

Data Processing Description

BCO-DMO Processing Notes
- Generated from original file "ASPIRE_chlorophyll.xls" contributed by Gert van Dijken
- Parameter names edited to conform to BCO-DMO naming convention found at Choosing Parameter Name
- Local Date reformatted to YYYYMMDD
- Chl_a data displayed to 2 decimal places

Data Files

File
Chlorophyll_a.csv (Comma Separated Values (.csv), 12.46 KB) MD5:4294b9e88c6c6c668b066282ed6b7c08 Primary data file for dataset ID 546372

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Antarctic Sciences	ANT-0944727

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
NBP1005	ASPIRE OSO 2010-11	2010-11-26	RVIB Nathaniel B. Palmer	Patricia L. Yager (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: CTD 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.

Turner Designs Fluorometer 10-AU

Supplied Name: Turner Fluorometer -10AU

Supplied Description:

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

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Bottle_Number	Bottle Number	text	bottle
Event	Event	dimensionless	event
Station	Station	dimensionless	station
Local_Date	Local Date	YYYYMMHH	date_local
Local_Time	Local Time	HHMM	time_local
Year_Day_GMT	Year Day GMT	integer	yrday_gmt
Time_GMT	Time GMT	HHMM	time
Latitude	Latitude	decimal degrees	lat
Longitude	Longitude	decimal degrees	lon
Chl_a	Chl a	ug/L	chl_a

Database

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Dataset: Chlorophyll a