Metadata Report for BODC Series Reference Number 1639110
Metadata Summary
Problem Reports
Data Access Policy
Narrative Documents
Project Information
Data Activity or Cruise Information
Fixed Station Information
BODC Quality Flags
SeaDataNet Quality Flags
Metadata Summary
Data Description |
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Data Identifiers |
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Time Co-ordinates(UT) |
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Spatial Co-ordinates | |||||||||||||||||||||||||||||||||||||||||
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Parameters |
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Definition of BOTTFLAG | |||||||||||||||||||||||||||||||||||||||||
BOTTFLAG | Definition |
---|---|
0 | The sampling event occurred without any incident being reported to BODC. |
1 | The filter in an in-situ sampling pump physically ruptured during sample resulting in an unquantifiable loss of sampled material. |
2 | Analytical 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. |
3 | The 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. |
4 | During 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. |
5 | Water was reported to be escaping from the bottle as the rosette was being recovered. |
6 | The bottle seals were observed to be incorrectly seated and the bottle was only part full of water on recovery. |
7 | Either 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). |
8 | There is reason to doubt the accuracy of the sampling depth associated with the sample. |
9 | The bottle air vent had not been closed prior to deployment giving rise to a risk of sample contamination through leakage. |
Definition of Rank |
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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 CD85, RRS Discovery DI217 and Valdivia VLD137
Document History
Converted from CDROM documentation.
Content of data series
ACARHPP1 | Alpha-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 | |
CAROSSP1 | Spectrophotometric carotenoid pigments (SCOR) |
Spectrophotometric assay of acetone extraction (GF/F filtered) | |
milligrams/cubic metre | |
CHLBHPP1 | Chlorophyll-b |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre | |
CHLBSSP1 | Spectrophotometric chlorophyll-b (SCOR) |
Spectrophotometric assay of acetone extraction (GF/F filtered) | |
Nanograms per litre | |
CHLCSSP1 | Spectrophotometric chlorophyll-c (SCOR) |
Spectrophotometric assay of acetone extraction (GF/F filtered) | |
Nanograms per litre | |
CLC3HPP1 | Chlorophyll-c3 |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre | |
CLPHHPP1 | Chlorophyll-a plus phaeophorbides |
HPLC assay of acetone extract (GF/F filtered) | |
milligrams/cubic metre | |
CPHLFLP1 | Fluorometric chlorophyll-a |
Fluorometric assay of acetone extract (GF/F filtered) | |
Milligrams/cubic metre | |
CPHLFLP4 | Fluorometric chlorophyll-a |
Fluorometric assay of acetone extraction (sum of size fractions >0.2 microns) | |
Milligrams/cubic metre | |
CPHLFMP1 | Fluorometric chlorophyll-a |
Fluorometric assay of methanol extract (GF/F filtered) | |
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 | |
CPHLPRTX | Bench fluorometer chlorophyll |
Bench fluorometer measurement on unfiltered water sample | |
Milligrams/cubic metre | |
CPHLSPP1 | Spectrophotometric chlorophyll-a (Lorenzen) |
Spectrophotometric assay of acetone extraction (GF/F filtered) | |
Milligrams/cubic metre | |
CPHLSSP1 | Spectrophotometric chlorophyll-a (SCOR) |
Spectrophotometric assay of acetone extraction (GF/F filtered) | |
Milligrams/cubic metre | |
CPHLSSPC | Spectrophotometric chlorophyll-a (SCOR) |
Spectrophotometric assay of acetone extraction (centrifuged) | |
Milligrams/cubic metre | |
DIADHPP1 | Diadinoxanthin |
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 | |
FUCXHPP1 | Fucoxanthin |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre | |
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 | |
PBA1HPP1 | Phaeophorbide-a1 |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre | |
PBA2HPP1 | Phaeophorbide-a2 |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre | |
PBA3HPP1 | Phaeophorbide-a3 |
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 | |
PHAEFLP4 | Fluorometric phaeopigments |
Fluorometric assay of acetone extract (sum of size fractions >0.2 microns) | |
Milligrams/cubic metre | |
PHAEFMP1 | Fluorometric phaeopigments |
Fluorometric assay of methanol extract (GF/F filtered) | |
Milligrams/cubic metre | |
PHAESPP1 | Spectrophotometric phaeopigments (Lorenzen) |
Spectrophotometric assay of acetone extract (GF/F filtered) | |
Milligrams/cubic metre | |
PTA1HPP1 | Phaeophytin-a1 |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre | |
PTA2HPP1 | Phaeophytin-a2 |
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 | |
SCHLFLPB | Size-fractionated fluorometric chlorophyll-a |
Fluorometric assay of acetone extract (>2 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 | |
SPHAFLPA | Size-fractionated phaeopigments |
Fluorometric assay of acetone extract (>5 micron size fraction) | |
Milligrams/cubic metre | |
SPHAFLPB | Size-fractionated phaeopigments |
Fluorometric assay of acetone extract (>2 micron size fraction) | |
Milligrams/cubic metre | |
SPHAFLPC | Size-fractionated phaeopigments |
Fluorometric assay of acetone extract (0.2-2 micron size fraction) | |
Milligrams/cubic metre | |
SPHAFLPF | Size-fractionated phaeopigments |
Fluorometric assay of acetone extract (>2 micron size fraction) | |
Milligrams/cubic metre | |
TCPEFLP1 | Total chloroplastic pigment |
Fluorometric assay of acetone extract (GF/F filtered) | |
Milligrams/cubic metre | |
ZEOXHPP1 | Zeoxantin |
HPLC assay of acetone extract (GF/F filtered) | |
Nanograms per litre |
Data Originator
Dr Ian Joint, Plymouth Marine Laboratory, UK.
Sampling strategy and methodology
Samples were taken from CTD rosette Niskin bottles, GoFlo bottles deployed on a hydrographic (kevlar) wire or from the continuous pumped seawater supply.
Samples taken for chlorophyll determinations (1-2 litres) were filtered through Whatman GF/F filters. The filters were quickly frozen and returned, continuously frozen, to the laboratory for analysis. Back at the laboratory, the samples were extracted in 90% acetone for approximately 12 hours in the dark at 4 °C. In most cases the resulting extract was assayed spectrophotometrically for chlorophyll a and phaeopigments following the procedures outlined in Lorenzen and Jeffrey (1978). On Discovery 217, the extracts were assayed both spectrophotometrically and fluorometrically.
Additional samples were analysed for chlorophyll as part of the size-fractionated production experiments. Aliquots of 100-200 ml were filtered through a cascade of membrane filters (the pore sizes may be determined from the parameter codes). Usually, they were immediately extracted into 90% acetone and assayed fluorometrically on board ship but on occasions the filters were frozen and returned to the laboratory for analysis. The sums of the individual size fraction values have been computed and included in the database.
Comments on data quality
Cruise Discovery DI217
The CTD pressure sensor gave rise to problems during this cruise and for the first three stations only wire out data were available. Whilst every effort has been made to correct the pressure channel and accurately match bottle firing pressures, the possibility for error should be borne in mind by users of the data.
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.
Holm-Hansen, O., Lorenzen, C.J., Holmes, R.W. and Strictland, J.D.H., 1965. Fluorometric determination of chlorophyll. J. Con. perm. int. Explor. 30, 3-15.
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.
Lorenzen, C.J. and Jeffrey, S.W., 1978. Determination of chlorophyll in seawater. UNESCO Techn. Paper Mar Sci, 35.
Strickland, J.D.H., Parsons, T.R. (1972). A practical handbook of seawater analysis. Fish. Res. Bd. Can.,.167-311.
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.
Project Information
Ocean Margin EXchange (OMEX) I
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 I (1993-1996)
The first phase of OMEX was divided into sub-projects by discipline:
- Physics
- Biogeochemical Cycles
- Biological Processes
- Benthic Processes
- Carbon Cycling and Biogases
This emphasises the multidisciplinary nature of the research.
The project fieldwork focussed on the region of the European Margin adjacent to the Goban Spur (off the coast of Brittany) and the shelf break off Tromsø, Norway. However, there was also data collected off the Iberian Margin and to the west of Ireland. In all a total of 57 research cruises (excluding 295 Continuous Plankton Recorder tows) were involved in the collection of OMEX I data.
Data Availability
Field data collected during OMEX I have been published by BODC as a CD-ROM product, entitled:
- OMEX I Project Data Set (two 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) | 1993-07-05 |
End Date (yyyy-mm-dd) | 1993-07-05 |
Organization Undertaking Activity | University of Hamburg, Department of Chemistry |
Country of Organization | Germany |
Originator's Data Activity Identifier | VLD137_BOTTLE_110 |
Platform Category | lowered unmanned submersible |
BODC Sample Metadata Report for VLD137_BOTTLE_110
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 |
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550725 | 30.00 | 1.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550726 | 30.00 | 5.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550727 | 30.00 | 15.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550728 | 30.00 | 20.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550729 | 30.00 | 25.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550730 | 30.00 | 35.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550731 | 30.00 | 40.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550732 | 30.00 | 100.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550753 | 30.00 | 10.00 | General Oceanics GO-FLO water sampler | No problem reported | ||||||
550754 | 30.00 | 30.00 | 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.
Related Data Activity activities are detailed in Appendix 1
Cruise
Cruise Name | VLD137 |
Departure Date | 1993-06-23 |
Arrival Date | 1993-07-16 |
Principal Scientist(s) | Thomas Raabe (University of Hamburg, Department of Chemistry) |
Ship | Valdivia |
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 |
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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 |
B | nominal value |
Q | value below limit of quantification |
Appendix 1: VLD137_BOTTLE_110
Related series for this Data Activity are presented in the table below. Further information can be found by following the appropriate links.
If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.
Series Identifier | Data Category | Start date/time | Start position | Cruise |
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1268158 | Water sample data | 1993-07-05 04:15:00 | 49.5 N, 10.517 W | Valdivia VLD137 |