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Metadata Report for BODC Series Reference Number 1689444


Metadata Summary

Data Description

Data Category Water sample data
Instrument Type
NameCategories
Non-toxic sea water supply  continuous water samplers
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Dr Bob Head
Originating Organization Plymouth Marine Laboratory
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) -
 

Data Identifiers

Originator's Identifier DI221_GPUMP_PIGX_39:
BODC Series Reference 1689444
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1996-06-15 16:00
End Time (yyyy-mm-dd hh:mm) 1996-07-22 07:00
Nominal Cycle Interval -
 

Spatial Co-ordinates

Southernmost Latitude 37.00990 N ( 37° 0.6' N )
Northernmost Latitude 61.71825 N ( 61° 43.1' N )
Westernmost Longitude 22.54227 W ( 22° 32.5' W )
Easternmost Longitude 6.22984 W ( 6° 13.8' W )
Positional Uncertainty Unspecified
Minimum Sensor or Sampling Depth 5.0 m
Maximum Sensor or Sampling Depth 5.0 m
Minimum Sensor or Sampling Height -
Maximum Sensor or Sampling Height -
Sea Floor Depth -
Sea Floor Depth Source -
Sensor or Sampling Distribution Unspecified -
Sensor or Sampling Depth Datum Unspecified -
Sea Floor Depth Datum Unspecified -
 

Parameters

BODC CODERankUnitsTitle
AADYAA011DaysDate (time from 00:00 01/01/1760 to 00:00 UT on day)
AAFDZZ011DaysTime (time between 00:00 UT and timestamp)
ALATGP011DegreesLatitude north relative to WGS84 by unspecified GPS system
ALONGP011DegreesLongitude east relative to WGS84 by unspecified GPS system
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
SCHLFLPA1Milligrams per cubic metreConcentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >5um phase] by filtration, acetone extraction and fluorometry
SCHLFLPC1Milligrams per cubic metreConcentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate 2-5um phase] by filtration, acetone extraction and fluorometry
SCHLFLPL1Milligrams per cubic metreConcentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate GF/F-20um phase] by filtration, acetone extraction and fluorometry

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

Open Data supplied by Natural Environment Research Council (NERC)

You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."


Narrative Documents

Pigments as part of the PRIME project

Parameter Code Definitions

CPHLFLP1 Fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (GF/F filtered)
CPHLFLP2 Fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (0.4/0.45 µm pore filtered)
CPHLFLP5 Fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (0.2 µm pore filtered)
CPHLPR01 In-situ fluorometer chlorophyll µg/litre
Calibrated in-situ fluorometer
CPHLZZXX Chlorophyll-a µg/litre
Unspecified methodology
PHAEFLP1 Fluorometric phaeopigments µg/litre
Fluorometric assay of acetone extract (GF/F filtered)
PHAEFLPZ Fluorometric phaeopigments µg/litre
Fluorometric assay of acetone extract (filter unspecified)
SCHLFLPA Size-fractionated fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (>5 µm fraction)
SCHLFLPC Size-fractionated fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (2-5 µm fraction)
SCHLFLPD Size-fractionated fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (1-5 µm fraction)
SCHLFLPL Size-fractionated fluorometric chlorophyll-a µg/litre
Fluorometric assay of acetone extract (GF/F-20 µm fraction)

Originator Code Definitions

2 Dr. Duncan Purdie Southampton Oceanography Centre
16 British Oceanographic Data Centre
36 Dr. Roger Harris CCMS Plymouth Marine Laboratory
39 Mr. Bob Head CCMS Plymouth Marine Laboratory
127 PRIME Project Office
136 Dr. Graeme Hays University of Wales, Swansea

Originator Protocols

Mr. Bob Head and Dr. Roger Harris

Samples (100 ml) were taken from the non-toxic supply and filtered, either through GF/F or pore filters for the size-fractionated work. Pigments were extracted on board ship using 90% acetone and assayed fluorometrically before and after the addition of acid on a Turner 111 bench fluorometer. The fluorometer was calibrated using known concentrations of chlorophyll a standard in 90% acetone.

Dr. Duncan Purdie

Samples of 1-2 litres were filtered, extracted into 10 ml acetone for 24-72 hours and assayed on a Turner bench fluorometer.

British Oceanographic Data Centre

Calibrated fluorometer values from the CTD downcasts at depths corresponding to the bottle firings have been determined by BODC and stored in the database. A Chelsea Instruments Aquatracka fluorometer was used, calibrated against fluorometric chlorophyll a data by BODC.

Non-toxic (underway) sea water supply

A source of uncontaminated near-surface (commonly 3 to 7 m) seawater pumped continuously to shipboard laboratories on research vessels. There is typically a temperature sensor near the intake (known as the hull temperature) to provide measurements that are as close as possible to the ambient water temperature. The flow from the supply is typically directed through continuously logged sensors such as a thermosalinograph and a fluorometer. Water samples are often collected from the non-toxic supply. The system is also referred to as the underway supply.


Project Information


No Project Information held for the Series

Data Activity or Cruise Information

Cruise

Cruise Name D221
Departure Date 1996-06-11
Arrival Date 1996-07-23
Principal Scientist(s)Graham Savidge (Queen's University Belfast School of Biological Sciences)
Ship RRS Discovery

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