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Metadata Report for BODC Series Reference Number 1656070


Metadata Summary

Data Description

Data Category Water sample data
Instrument Type
NameCategories
General Oceanics GO-FLO water sampler  discrete water samplers
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Mrs Elaine Fileman
Originating Organization Plymouth Marine Laboratory
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) OMEX II-II
 

Data Identifiers

Originator's Identifier CD114A_BOTTLE_PIGX_137:GRAZE01
BODC Series Reference 1656070
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1998-08-03 04:52
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval -
 

Spatial Co-ordinates

Latitude 42.61846 N ( 42° 37.1' N )
Longitude 9.40031 W ( 9° 24.0' W )
Positional Uncertainty Unspecified
Minimum Sensor or Sampling Depth 10.0 m
Maximum Sensor or Sampling Depth 10.0 m
Minimum Sensor or Sampling Height 134.0 m
Maximum Sensor or Sampling Height 134.0 m
Sea Floor Depth 144.0 m
Sea Floor Depth Source -
Sensor or Sampling Distribution Unspecified -
Sensor or Sampling Depth Datum Unspecified -
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODERankUnitsTitle
ADEPZZ011MetresDepth (spatial coordinate) relative to water surface in the water body
BOTTFLAG1Not applicableSampling process quality flag (BODC C22)
CPHLFLP11Milligrams per cubic metreConcentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >GF/F phase] by filtration, acetone extraction and fluorometry
SAMPRFNM1DimensionlessSample reference number

Definition of BOTTFLAG

BOTTFLAGDefinition
0The sampling event occurred without any incident being reported to BODC.
1The filter in an in-situ sampling pump physically ruptured during sample resulting in an unquantifiable loss of sampled material.
2Analytical evidence (e.g. surface water salinity measured on a sample collected at depth) indicates that the water sample has been contaminated by water from depths other than the depths of sampling.
3The feedback indicator on the deck unit reported that the bottle closure command had failed. General Oceanics deck units used on NERC vessels in the 80s and 90s were renowned for reporting misfires when the bottle had been closed. This flag is also suitable for when a trigger command is mistakenly sent to a bottle that has previously been fired.
4During the sampling deployment the bottle was fired in an order other than incrementing rosette position. Indicative of the potential for errors in the assignment of bottle firing depth, especially with General Oceanics rosettes.
5Water was reported to be escaping from the bottle as the rosette was being recovered.
6The bottle seals were observed to be incorrectly seated and the bottle was only part full of water on recovery.
7Either the bottle was found to contain no sample on recovery or there was no bottle fitted to the rosette position fired (but SBE35 record may exist).
8There is reason to doubt the accuracy of the sampling depth associated with the sample.
9The bottle air vent had not been closed prior to deployment giving rise to a risk of sample contamination through leakage.

Definition of Rank

  • Rank 1 is a one-dimensional parameter
  • Rank 2 is a two-dimensional parameter
  • Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

Problem Reports

No Problem Report Found in the Database


Data Access Policy

Public domain data

These data have no specific confidentiality restrictions for users. However, users must acknowledge data sources as it is not ethical to publish data without proper attribution. Any publication or other output resulting from usage of the data should include an acknowledgment.

The recommended acknowledgment is

"This study uses data from the data source/organisation/programme, provided by the British Oceanographic Data Centre and funded by the funding body."


Narrative Documents

GO-FLO Bottle

A water sampling bottle featuring close-open-close operation. The bottle opens automatically at approximately 10 metres and flushes until closed. Sampling with these bottles avoids contamination at the surface, internal spring contamination, loss of sample on deck and exchange of water from different depths.

There are several sizes available, from 1.7 to 100 litres and are made of PVC with a depth rating of up to 500 m. These bottles can be attached to a rosette or placed on a cable at selected positions.

Pigments for cruises Charles Darwin CD114A and CD114B and Poseidon PS237_1

Document History

Converted from CDROM documentation

Content of data series

ABCRHPP1 Alpha-carotene plus beta-carotene
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
ALLOHPP1 Alloxanthin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
BCARHPP1 Beta-carotene
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
BUTAHPP1 Butanoyloxyfucoxanthin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
C1C2HPP1 Chlorophyll-c1c2
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
CHLBHPP1 Chlorophyll-b
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
CLC3HPP1 Chlorophyll-c3
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
CPHLFLP1 Fluorometric chlorophyll-a
Fluorometric assay of acetone extract (GF/F filtered)
Milligrams/cubic metre
CPHLFLP3 Fluorometric chlorophyll-a
Fluorometric assay of acetone extract (GF/C filtered)
Milligrams/cubic metre
CPHLFLP4 Fluorometric chlorophyll-a
Fluorometric assay of acetone extraction (sum of size fractions >0.2 microns)
Milligrams/cubic metre
CPHLFLP6 Fluorometric chlorophyll-a
Fluorometric assay of acetone extraction (sum of size fractions >GF/F)
Milligrams/cubic metre
CPHLHPP1 HPLC chlorophyll-a
HPLC assay of acetone extract (GF/F filtered)
Milligrams/cubic metre
CPHLPR01 CTD chlorophyll
Calibrated in-situ fluorometer
Milligrams/cubic metre
CPHLSSP6 Spectrophotometric chlorophyll-a (Jeffrey and Humphrey trichromatic)
Spectrophotometric assay of acetone extraction (sum of size fractions >GF/F)
Milligrams/cubic metre
CPHLYMP1 Fluorometric chlorophyll-a
Yentsch+Menzel fluorometric assay on acetone extract (GF/F filtered)
Milligrams/cubic metre
DIADHPP1 Diadinoxanthin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
DIATHPP1 Diatoxanthin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
DVCAHPP1 Diavinyl chlorophyll-a
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
DVCBHPP1 Diavinyl chlorophyll-b
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
FUCXHPP1 Fucoxanthin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
FVLTAQ01 Chelsea Instruments Aquatracka fluorometer output voltage
Output voltage sampled by analogue to digital converter
Volts
HEXOHPP1 Hexanoyloxyfucoxanthin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
LUTNHPP1 Lutein
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
PBAXHPP1 Phaeophorbide-a
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
PBBXHPP1 Phaeophorbide-b
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
PERIHPP1 Peridinin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
PHAEFLP1 Fluorometric phaeopigments
Fluorometric assay of acetone extract (GF/F filtered)
Milligrams/cubic metre
PHAEFLP3 Fluorometric phaeopigments
Fluorometric assay of acetone extract (GF/C filtered)
Milligrams/cubic metre
PTAXHPP1 Phaeophytin-a
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
PYPTHPP1 Pyrophaeophytin-a
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
SCHLFLPA Size-fractionated fluorometric chlorophyll-a
Fluorometric assay of acetone extract (>5 micron size fraction)
Milligrams/cubic metre
SCHLFLPC Size-fractionated fluorometric chlorophyll-a
Fluorometric assay of acetone extract (2-5 micron size fraction)
Milligrams/cubic metre
SCHLFLPF Size-fractionated fluorometric chlorophyll-a
Fluorometric assay of acetone extract (0.2-2 micron size fraction)
Milligrams/cubic metre
SCHLSSPA Size-fractionated fluorometric chlorophyll-a (Jeffrey and Humphrey trichromatic)
Spectrophotometric assay of acetone extraction (>5 micron size fraction)
Milligrams/cubic metre
SCHLSSPC Size-fractionated fluorometric chlorophyll-a (Jeffrey and Humphrey trichromatic)
Spectrophotometric assay of acetone extraction (2-5 micron size fraction)
Milligrams/cubic metre
SCHLSSPN Size-fractionated fluorometric chlorophyll-a (Jeffrey and Humphrey trichromatic)
Spectrophotometric assay of acetone extraction (GF/F-2 micron size fraction)
Milligrams/cubic metre
VILXHPP1 Violaxentin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre
ZEOXHPP1 Zeoxantin
HPLC assay of acetone extract (GF/F filtered)
Nanograms per litre

Data Originator

Dr Elaine Fileman, Plymouth Marine Laboratory, UK.

Sampling strategy and methodology

Samples taken from the microzooplankton grazing experiments at time zero were filtered through GF/F filters, extracted into 90% acetone and assayed fluorometrically to give extracted chlorophyll.

Comments on data quality

The HPLC analyst reported that for BG9919 fucoxanthin may contain phaeophorbides and the chlorophyll-a data loaded were the sum of chlorophyll-a and chlorophyll-a allomer.

References

Barlow, R.G., Mantoura, R.F.C., Gough, M.A. and Fileman, T.W., 1993a. Pigment signatures of the phytoplankton composition in the north-east Atlantic during the 1990 spring bloom. Deep Sea Res. II, 40, 459-477.

Barlow, R.G., Mantoura, R.F.C., Gough, M.A. and Fileman, T.W., 1993b. Phaeopigment distribution during the 1990 spring bloom in the north-east Atlantic. Deep Sea Res. I, 40, 2229-2242.

Barlow, R.G., Cummings, D.G., Mantoura, R.F.C. and Fileman, T.W., 1996. Pigment chemotaxonomic distributions of phytoplankton during summer in the western Mediterranean. Deep Sea Res. II, in press.

Jeffrey, S.W. and Humphrey, G.F., 1975. New spectrophotometric equations for determining chlorophylls a, b, c1 and c2 in higher plants, algae and natural phytoplankton. Biochem. Physiol. Pflan., 167, 191-194.

Lorenzen, C.J., 1967. Determination of chlorophyll and phaeopigments: spectrophotometric equations. Limnology and Oceanography, 12.

Tahey, T.M., Duineveld, G.C.A., Berghuis, E.M. and Helder, W., 1994. Relation between sediment-water fluxes of oxygen and silicate and faunal abundance at continental shelf, slope and deep-water stations in the North West Mediterranean. Marine Ecology Progress Series, 104, 119-130.

Thomsen. L., Graf, G., Martens, V. and Steen, E., 1994. An instrument for sampling water from the bottom nepheloid layer. Contin. Shelf Res., 14, 871-882.

Thomsen, L. and Graf, G., 1995. Benthic boundary layer characteristics of the continental margin of the western Barents Sea. Oceanologica Acta, 17/6, 597-607.

Wright, S.W., Jeffrey, S.W., Mantoura, R.F.C., Llewellyn, C.A., Bjornland, T., Repeta, D. and Welschmeyer, N., 1991. Improved HPLC method for the analysis of chlorophylls and carotenoids from marine phytoplankton. Marine Ecology Progress Series, 77, 183-196.

Yentsch, C.S. and Menzel, D.W., 1963. A method for the determination of phytoplankton chlorophyll and phaeophytin by fluoresence. Deep-Sea Res., 10, 221-231.


Project Information

Ocean Margin EXchange (OMEX) II - II

Introduction

OMEX was a European multidisciplinary oceanographic research project that studied and quantified the exchange processes of carbon and associated elements between the continental shelf of western Europe and the open Atlantic Ocean. The project ran in two phases known as OMEX I (1993-1996) and OMEX II - II (1997-2000), with a bridging phase OMEX II - I (1996-1997). The project was supported by the European Union under the second and third phases of its MArine Science and Technology Programme (MAST) through contracts MAS2-CT93-0069 and MAS3-CT97-0076. It was led by Professor Roland Wollast from Université Libre de Bruxelles, Belgium and involved more than 100 scientists from 10 European countries.

Scientific Objectives

The aim of the Ocean Margin EXchange (OMEX) project was to gain a better understanding of the physical, chemical and biological processes occurring at the ocean margins in order to quantify fluxes of energy and matter (carbon, nutrients and other trace elements) across this boundary. The research culminated in the development of quantitative budgets for the areas studied using an approach based on both field measurements and modeling.

OMEX II - II (1997-2000)

The second phase of OMEX concentrated exclusively on the Iberian Margin, although RV Belgica did make some measurements on La Chapelle Bank whilst on passage to Zeebrugge. This is a narrow-shelf environment, which contrasts sharply with the broad shelf adjacent to the Goban Spur. This phase of the project was also strongly multidisciplinary in approach, covering physics, chemistry, biology and geology.

There were a total of 33 OMEX II - II research cruises, plus 23 CPR tows, most of which were instrumented. Some of these cruises took place before the official project start date of June 1997.

Data Availability

Field data collected during OMEX II - II have been published by BODC as a CD-ROM product, entitled:

  • OMEX II Project Data Set (three discs)

Further descriptions of this product and order forms may be found on the BODC web site.

The data are also held in BODC's databases and subsets may be obtained by request from BODC.


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 1998-08-03
End Date (yyyy-mm-dd) Ongoing
Organization Undertaking ActivityPlymouth Marine Laboratory
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierCD114A_BOTTLE_GRAZE01
Platform Categorylowered unmanned submersible

BODC Sample Metadata Report for CD114A_BOTTLE_GRAZE01

Sample reference number Nominal collection volume(l) Bottle rosette position Bottle firing sequence number Minimum pressure sampled (dbar) Maximum pressure sampled (dbar) Depth of sampling point (m) Bottle type Sample quality flag Bottle reference Comments
610935   30.00           10.00 General Oceanics GO-FLO water sampler No problem reported    

Please note:the supplied parameters may not have been sampled from all the bottle firings described in the table above. Cross-match the Sample Reference Number above against the SAMPRFNM value in the data file to identify the relevant metadata.

Cruise

Cruise Name CD114A
Departure Date 1998-07-29
Arrival Date 1998-08-11
Principal Scientist(s)Ian Joint (Plymouth Marine Laboratory)
Ship RRS Charles Darwin

Complete Cruise Metadata Report is available here


Fixed Station Information


No Fixed Station Information held for the Series


BODC Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

Flag Description
Blank Unqualified
< Below detection limit
> In excess of quoted value
A Taxonomic flag for affinis (aff.)
B Beginning of CTD Down/Up Cast
C Taxonomic flag for confer (cf.)
D Thermometric depth
E End of CTD Down/Up Cast
G Non-taxonomic biological characteristic uncertainty
H Extrapolated value
I Taxonomic flag for single species (sp.)
K Improbable value - unknown quality control source
L Improbable value - originator's quality control
M Improbable value - BODC quality control
N Null value
O Improbable value - user quality control
P Trace/calm
Q Indeterminate
R Replacement value
S Estimated value
T Interpolated value
U Uncalibrated
W Control value
X Excessive difference

SeaDataNet Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

Flag Description
0 no quality control
1 good value
2 probably good value
3 probably bad value
4 bad value
5 changed value
6 value below detection
7 value in excess
8 interpolated value
9 missing value
A value phenomenon uncertain
Q value below limit of quantification