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Metadata Report for BODC Series Reference Number 1897330


Metadata Summary

Data Description

Data Category Water sample data
Instrument Type
NameCategories
General Oceanics GO-FLO water sampler  discrete water samplers
Instrument Mounting lowered unmanned submersible
Originating Country United Kingdom
Originator Dr Wendy Broadgate
Originating Organization University of East Anglia School of Environmental Sciences
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) ACSOE
 

Data Identifiers

Originator's Identifier DI234_CTD_NMHC_67:CTD34
BODC Series Reference 1897330
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1998-06-26 21:17
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval -
 

Spatial Co-ordinates

Latitude 61.19732 N ( 61° 11.8' N )
Longitude 20.51838 W ( 20° 31.1' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor or Sampling Depth 1.1 m
Maximum Sensor or Sampling Depth 198.1 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
ADEPZZ011MetresDepth (spatial coordinate) relative to water surface in the water body
AV02GCTX1Picomoles per litreConcentration of ethyne {acetylene CAS 74-86-2} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AW02GCTX1Picomoles per litreConcentration of ethene {ethylene C2H4 CAS 74-85-1} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AW03GCTX1Picomoles per litreConcentration of propene {propylene CAS 115-07-1} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AW04GCTX1Picomoles per litreConcentration of 1-butene {CAS 106-98-9} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AW05GCTX1Picomoles per litreConcentration of 1-pentene {CAS 109-67-1} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AW06GCTX1Picomoles per litreConcentration of 1-hexene {CAS 592-41-6} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AWA4GCTX1Picomoles per litreConcentration of cis-2-butene {CAS 590-18-1} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AWA5GCTX1Picomoles per litreConcentration of cis-2-pentene {CAS 627-20-3} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AWB4GCTX1Picomoles per litreConcentration of trans-2-butene {CAS 624-64-6} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AWB5GCTX1Picomoles per litreConcentration of trans-2-pentene {CAS 646-04-8} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AWI4GCTX1Picomoles per litreConcentration of methylpropene {i-butene isobutene C4H8 CAS 115-11-7} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AX02GCTX1Picomoles per litreConcentration of ethane {CAS 74-84-0} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AX03GCTX1Picomoles per litreConcentration of propane {CAS 74-98-6} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AX04GCTX1Picomoles per litreConcentration of butane {C4H10 C4_n-alkane CAS 106-97-8} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AX05GCTX1Picomoles per litreConcentration of pentane {C5H12 C5_n-alkane CAS 109-66-0} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AX06GCTX1Picomoles per litreConcentration of hexane {C6H14 C6_n-alkane CAS 110-54-3} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AXI4GCTX1Picomoles per litreConcentration of 2-methylpropane {isobutane CAS 75-28-5} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AXI5GCTX1Picomoles per litreConcentration of 2-methylbutane {isopentane CAS 78-78-4} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AXZ6GCTX1Picomoles per litreConcentration of 2-methylpentane+3-methylpentane {isohexanes} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AYB4GCTX1Picomoles per litreConcentration of 1,3-butadiene {CAS 106-99-0} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
AYI5GCTX1Picomoles per litreConcentration of 2-methyl-1,3-butadiene {isoprene CAS 78-79-5} per unit volume of the water body [dissolved plus reactive particulate phase] by purging, cryogenic trapping and gas chromatography
BOTTFLAG1Not applicableSampling process quality flag (BODC C22)
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

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

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.


Project Information

Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE)

Introduction

ACSOE was a NERC Thematic Research Programme which investigated the chemistry of the lower atmosphere (0-12 km) over the oceans. The studies aimed to bring about a clearer understanding of natural processes in the remote marine atmosphere, and how these processes are affected by atmospheric pollution originating from the continents. This information is vital to help understand regional and global-scale changes in atmospheric chemistry and climate.

Aims and Objectives

The £3.9 million NERC-funded programme was instigated as a major UK contribution to this international scientific effort between 1995 and 2000. The overarching aim of ACSOE was to investigate the processes that control the production and fate of trace gases and particles (condensation nuclei and aerosols) in the atmosphere over the oceans. For convenience it was divided into three separate but linked activities:

  1. MAGE, Marine Aerosol and Gas Exchange - to study air-sea exchange especially of atmospherically-important gases produced by marine microorganisms, such as dimethyl sulphide (DMS) and carbon dioxide (CO2)
  2. OXICOA, Oxidising Capacity of the Ocean Atmosphere - a study of the tropospheric ozone budget and underlying chemistry
  3. ACE, Aerosol Characterisation Experiment - to investigate the development of aerosols and clouds in European air spreading out into the Atlantic Ocean

The project had several objectives including:

  • To determine the ozone budget of the background lower atmosphere (i.e. the troposphere)
  • To study the sunlight-initiated chemistry of gases and particles (aerosol) in the background atmosphere
  • To determine the importance of night-time chemistry
  • To seek evidence for extensive halogen atom chemistry
  • To measure air-sea gas transfer rates
  • To assess the role of coastal and open ocean waters as sources of reactive gases
  • To observe the effects of atmospheric deposition on oceanic biogeochemistry
  • To investigate how clouds are affected by the chemistry of the inflowing air
  • To identify within-cloud processes affecting particle size and chemistry

Project Co-ordination:

The programme was led by Professor Stuart Penkett of the University of East Anglia and involved over 100 scientists from leading British and International universities and institutes. Atmospheric data are held at BADC and data collected in the marine environment for the MAGE component of the programme are held at BODC.

Fieldwork description:

Fieldwork was carried out in 1996, 1997 and 1998 and involved air-, land- and sea-based measurements, coupled with modelling studies. Measurements were made at remote field sites (Mace Head, Ireland; Weybourne, Norfolk; Tenerife), from the NERC research vessels Challenger and Discovery and aboard the Meteorological Research Flight C-130 and the Cranfield Jetstream aircraft.


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 1998-06-26
End Date (yyyy-mm-dd) 1998-06-26
Organization Undertaking ActivityUniversity of East Anglia School of Environmental Sciences
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierDI234_CTD_CTD34
Platform Categorylowered unmanned submersible

BODC Sample Metadata Report for DI234_CTD_CTD34

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
101662   30.00        2.80    5.10    1.10 General Oceanics GO-FLO water sampler No problem reported    
101663   30.00        8.10   10.00    6.20 General Oceanics GO-FLO water sampler No problem reported    
101664   30.00       23.80   25.20   21.50 General Oceanics GO-FLO water sampler No problem reported    
101665   30.00       34.00   36.20   32.00 General Oceanics GO-FLO water sampler No problem reported    
101668   30.00       64.20   65.80   61.60 General Oceanics GO-FLO water sampler No problem reported    
101669   30.00      201.80  204.10  198.10 General Oceanics GO-FLO water sampler No problem reported    
101670   30.00      103.00  105.40  100.40 General Oceanics GO-FLO water sampler No problem reported    
101671   30.00       44.30   45.70   41.80 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 D234
Departure Date 1998-06-06
Arrival Date 1998-07-09
Principal Scientist(s)Peter Liss (University of East Anglia School of Environmental 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

Appendix 1: DI234_CTD_CTD34

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 IdentifierData CategoryStart date/timeStart positionCruise
1230197Water sample data1998-06-26 21:17:0061.19732 N, 20.51838 WRRS Discovery D234
1897575Water sample data1998-06-26 21:17:0061.19732 N, 20.51838 WRRS Discovery D234
1898019Water sample data1998-06-26 21:17:0061.19732 N, 20.51838 WRRS Discovery D234
1898345Water sample data1998-06-26 21:17:0061.19732 N, 20.51838 WRRS Discovery D234
1898714Water sample data1998-06-26 21:17:0061.19732 N, 20.51838 WRRS Discovery D234