Fluorometric chlorophyll-a and phaeopigments from RVIB Nathaniel B. Palmer NBP-96-4A, NBP-97-1, NBP-97-3, NBP-97-8, NBP-98-2 cruises in the Southern Ocean in 1997 (U.S. JGOFS AESOPS project)

Website: https://www.bco-dmo.org/dataset/2745
Version: final
Version Date: 2002-04-12

Project
» U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Smith, Walker O.Virginia Institute of Marine Science (VIMS)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Fluorometric chlorophyll-a & phaeopigments


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Data Files

File
phaeopigments_NBP-96-04A.csv
(Comma Separated Values (.csv), 17.36 KB)
MD5:1531f22524625289fe0202c36051de53
Version August 23, 2001 (original version April 12, 1999)
PI: Walker O. Smith
of: Virginia Institute of Marine Science
dataset: Fluorometric chlorophyll-a & phaeopigments
project/cruise: AESOPS/NBP96-4A - Ross Sea Process Cruise 1
ship: Nathaniel B. Palmer

phaeopigments_NBP-97-01.csv
(Comma Separated Values (.csv), 20.04 KB)
MD5:a21cfa69a8aac078cdd1d8c34ce42980
Version August 23, 2001 (original version May 14, 1999)
PI: Walker O. Smith
of: Virginia Institute of Marine Science
dataset: Fluorometric chlorophyll-a & phaeopigments
project/cruise: AESOPS/NBP-97-1 - Ross Sea Process Cruise 2
ship: Nathaniel B. Palmer

DMO note (020423):
suspect event 01171933, sta 5, cast 8,
data reported from bottle 1; bottle was
tripped at 20 dbars (not 30 as reported).

suspect event 01190310, sta 7, cast 2,
data reported from bottle 5 was most likely
from bottle 4 (tripped at 9.9 db).

phaeopigments_NBP-97-03.csv
(Comma Separated Values (.csv), 11.40 KB)
MD5:14a4de6401ec25feb1910c072bfc60dc
Version August 23, 2001 (original version May 14, 1999)
PI: Walker O. Smith
of: Virginia Institute of Marine Science
dataset: Fluorometric chlorophyll-a & phaeopigments
project/cruise: AESOPS/NBP-97-3 - Ross Sea Process Cruise 3
ship: Nathaniel B. Palmer

DMO note (020410): suspect event 04141658, sta 4, cast 2,
data reported from bottle 6 most likely
came from bottle 7 or 8 fired at 3 meters.

phaeopigments_NBP-97-08.csv
(Comma Separated Values (.csv), 31.03 KB)
MD5:28a13873b50e61ed07bc516a50cdefbb
Version August 23, 2001 (original version May 14, 1999)
PI: Walker O. Smith
of: Virginia Institute of Marine Science
dataset: Fluorometric chlorophyll-a & phaeopigments
project/cruise: AESOPS/NBP-97-8 - Ross Sea Process Cruise 4
ship: Nathaniel B. Palmer

phaeopigments_NBP-98-2.csv
(Comma Separated Values (.csv), 2.79 KB)
MD5:ff2b8d6d596fa2c769d3e800a4f57041
Version April 12, 2002
PI: Walker O. Smith
of: Virginia Institute of Marine Science
dataset: Fluorometric chlorophyll-a & phaeopigments
project/cruise: AESOPS/NBP-98-2 - Benthic Cruise
ship: R/V Nathaniel B. Palmer


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Parameters

ParameterDescriptionUnits
event

event number from event log

sta

station number from event log

cast

cast number

cast_type

CTD = CTD rosette
TM = trace metal rosette

bot

bottle number

depth_n

nominal depth

meters
Fo_to_Fa

ratio of fluorometer readings, where:
Fo = sample reading before acidification Fa = sample reading after acidification

chl_a_fluor

chlorophyll-a, fluorometric method

micrograms/liter
phaeo

phaeopigments, fluorometric method

micrograms/liter


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Instruments

Dataset-specific Instrument Name
Niskin Bottle
Generic Instrument Name
Niskin bottle
Dataset-specific Description
CTD clean rosette (Niskin) bottles were used to collect water samples
Generic Instrument 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.

Dataset-specific Instrument Name
Trace Metal Bottle
Generic Instrument Name
Trace Metal Bottle
Dataset-specific Description
Trace metal (TM) clean rosette bottles were used to collect water samples.
Generic Instrument Description
Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples.


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Deployments

NBP-96-04A

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1996-10-02
End Date
1996-11-08
Description
Ross Sea Process Study 1

Methods & Sampling
PI: Walker O. Smith of: University of Tennessee dataset: Fluorometric chlorophyll-a & phaeopigments dates: October 17, 1996 to November 06, 1996 location: N: -76.4623 S: -78.0348 W: 168.9967 E: -175.9047 project/cruise: AESOPS/NBP96-4A - Ross Sea Process 1 Cruise ship: R/V Nathaniel B. Palmer Methodology: Please see Chapter 14 of the JGOFS protocols (1994), "Measurements of Chlorophyll a and Phaeopigments by Fluorometric Analysis" PI-Notes on Methodology: 25mm GF/F filters Extracted volume = 7mL in 90% Acetone 1.2M HCl = 3 drops ASA's 10-AU fluorometer. Blank=0. Calibrated by Scott Polk (ASA: Antarctic Support Associates) DMO Note on multiple-bottle events

NBP-97-01

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1997-01-13
End Date
1997-02-11
Description
Ross Sea Process Study 2

Methods & Sampling
PI: Walker O. Smith of: University of Tennessee dataset: Fluorometric chlorophyll-a & phaeopigments dates: January 13, 1997 to February 09, 1997 location: N: -73.9972 S: -78.043 W: 163.3950 E: -175.9906 project/cruise: AESOPS/NBP97-1 - Ross Sea Process 2 Cruise ship: R/V Nathaniel B. Palmer Methodology: Please see Chapter 14 of the JGOFS protocols (1994), "Measurements of Chlorophyll a and Phaeopigments by Fluorometric Analysis" PI-Notes on Methodology: 25mm GF/F filters Extracted volume = 7mL in 90% Acetone 1.2M HCl = 3 drops ASA's 10-AU fluorometer. Blank=0. Calibrated by A.M. White (ASA: Antarctic Support Associates)

NBP-97-03

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1997-04-04
End Date
1997-05-11
Description
Ross Sea Process Study 3

Methods & Sampling
PI: Walker O. Smith of: University of Tennessee dataset: Fluorometric chlorophyll-a & phaeopigments dates: April 12, 1997 to April 29, 1997 location: N: -73.9602 S: -77.9486 W: 168.9281 E: -176.1155 project/cruise: AESOPS/NBP97-3 - Ross Sea Process Cruise 3 ship: R/V Nathaniel B. Palmer Methodology: Please see Chapter 14 of the JGOFS protocols (1994), "Measurements of Chlorophyll a and Phaeopigments by Fluorometric Analysis" PI-Notes on Methodology: 25mm GF/F filters Extracted volume = 7mL in 90% Acetone 1.2M HCl = 3 drops ASA's 10-AU fluorometer. Blank=0. Calibrated by K. Hanson (ASA: Antarctic Support Associates) DMO Note on multiple-bottle events

NBP-97-08

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1997-11-05
End Date
1997-12-13
Description
Ross Sea Process Study 4 SeaWiFS transmits images to U.S. JGOFS scientists aboard the Palmer, for first time on November 23, 1997.

Methods & Sampling
PI: Walker O. Smith of: University of Tennessee dataset: Fluorometric chlorophyll-a & phaeopigments dates: November 15, 1997 to December 11, 1997 location: N: -73.5048 S: -77.888 W: 168.9257 E: -177.9562 project/cruise: AESOPS/NBP97-8 - Ross Sea Process 4 Cruise ship: R/V Nathaniel B. Palmer Methodology: Please see Chapter 14 of the JGOFS protocols (1994), "Measurements of Chlorophyll a and Phaeopigments by Fluorometric Analysis" PI-Notes on Methodology: 25mm GF/F filters Extracted volume = 7mL in 90% Acetone 1.2M HCl = 3 drops ASA's 10-AU fluorometer. Blank=0. Calibrated by S. Mathot and J. Seward (ASA: Antarctic Support Associates) DMO Note on multiple-bottle events DMO Note on discrepencies with TMbottle data

NBP-98-2

Website
Platform
RVIB Nathaniel B. Palmer
Report
Start Date
1998-02-25
End Date
1998-04-03
Description
Benthic Process and Moorings Recovery

Methods & Sampling
PI: Walker O. Smith of: University of Tennessee dataset: Fluorometric chlorophyll-a & phaeopigments dates: February 26, 1998 to March 29, 1998 location: N: -53.0437 S: -76.4962 W: 176.8417 E: -169.6257 project/cruise: AESOPS/NBP98-2 - Ross Sea Benthic Process and Mooring Recovery Cruise ship: R/V Nathaniel B. Palmer Methodology: Please see Chapter 14 of the JGOFS protocols (1994), "Measurements of Chlorophyll a and Phaeopigments by Fluorometric Analysis" PI-Notes on Methodology: 25mm GF/F filters Extracted volume = 7mL in 90% Acetone 1.2M HCl = 3 drops ASA's 10-AU fluorometer. Blank=0. Calibrated by S. Mathot & J. Seward (ASA: Antarctic Support Associates)


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Project Information

U.S. JGOFS Antarctic Environment and Southern Ocean Process Study (AESOPS)


Coverage: Southern Ocean, Ross Sea


The U.S. Southern Ocean JGOFS program, called Antarctic Environment and Southern Ocean Process Study (AESOPS), began in August 1996 and continued through March 1998. The U.S. JGOFS AESOPS program focused on two regions in the Southern Ocean: an east/west section of the Ross-Sea continental shelf along 76.5°S, and a second north/south section of the Southern Ocean spanning the Antarctic Circumpolar Current (ACC) at ~170°W (identified as the Polar Front). The science program, coordinated by Antarctic Support Associates (ASA), comprised eleven cruises using the R.V.I.B Nathaniel B. Palmer and R/V Roger Revelle as observational platforms and for deployment and recovery of instrumented moorings and sediment-trap arrays. The Ross-Sea region was occupied on six occasions and the Polar Front five times. Mapping data were obtained from SeaSoar, ADCP, and bathymetric systems. Satellite coverage was provided by the NASA SeaWiFS and the NOAA/NASA Pathfinder programs.



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Program Information

U.S. Joint Global Ocean Flux Study (U.S. JGOFS)


Coverage: Global


The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.

The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).



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