Metadata Report for BODC Series Reference Number 1280888


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 Prof Raymond Pollard
Originating Organization James Rennell Centre for Ocean Circulation (now National Oceanography Centre, Southampton)
Processing Status banked
Project(s) UK WOCE
 

Data Identifiers

Originator's Identifier CD62_CTD_NUTS_32:CTD62016
BODC Series Reference 1280888
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1991-08-08 00:51
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval -
 

Spatial Co-ordinates

Latitude 55.20178 N ( 55° 12.1' N )
Longitude 20.00249 W ( 20° 0.1' W )
Positional Uncertainty Unspecified
Minimum Sensor Depth 8.5 m
Maximum Sensor Depth 1628.1 m
Minimum Sensor Height 21.6 m
Maximum Sensor Height 1641.2 m
Sea Floor Depth 1649.7 m
Sensor Distribution Unspecified -
Sensor Depth Datum Unspecified -
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODE Rank Units Short Title Title
ADEPZZ01 1 Metres DepBelowSurf Depth below surface of the water body
BOTTFLAG 1 Dimensionless C22_flag Sampling process quality flag (BODC C22)
NTRZAATX 1 Micromoles per litre NO3+NO2_Unfilt_ColAA Concentration of nitrate+nitrite {NO3+NO2} per unit volume of the water body [dissolved plus reactive particulate phase] by colorimetric autoanalysis
SAMPRFNM 1 Dimensionless SampRef Sample reference number
SLCAAATX 1 Micromoles per litre SiOx_Unfilt_ColAA Concentration of silicate {SiO44- CAS 17181-37-2} per unit volume of the water body [dissolved plus reactive particulate phase] by colorimetric autoanalysis
 

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.


Project Information

UK WOCE

The UK made a substantial contribution to the international World Ocean Circulation Experiment (WOCE) project by focusing on two important regions:

  1. Southern Ocean - links all the worlds oceans, controlling global climate.
  2. North Atlantic - directly affects the climate of Europe.

A major part of the UK effort was in the Southern Ocean and work included:

In the North Atlantic the UK undertook:

Satellite ocean surface topography, temperature and wind data were merged with in situ observations and models to create a complete description of ocean circulation, eddy motion and the way the ocean is driven by the atmosphere.

The surveys were forerunners to the international Global Ocean Observing System (GOOS). GOOS was later established to monitor annual to decadal changes in ocean circulation and heat storage which are vital in the prediction of climate change.


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 1991-08-08
End Date (yyyy-mm-dd) 1991-08-08
Organization Undertaking ActivityInstitute of Oceanographic Sciences Deacon Laboratory (now National Oceanography Centre, Southampton)
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierCD62_CTD_CTD62016
Platform Categorylowered unmanned submersible

BODC Sample Metadata Report for CD62_CTD_CTD62016

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
86088   10.00        9.00   10.50    8.50 General Oceanics GO-FLO water sampler No problem reported    
86089   10.00       30.60   32.10   29.90 General Oceanics GO-FLO water sampler No problem reported    
86090   10.00      104.70  106.20  103.30 General Oceanics GO-FLO water sampler No problem reported    
86091   10.00      153.40  154.90  151.60 General Oceanics GO-FLO water sampler No problem reported    
86092   10.00      253.20  254.70  250.40 General Oceanics GO-FLO water sampler No problem reported    
86093   10.00      303.10  304.60  299.70 General Oceanics GO-FLO water sampler No problem reported    
86094   10.00      503.40  504.90  497.90 General Oceanics GO-FLO water sampler No problem reported    
86095   10.00      756.70  758.20  748.10 General Oceanics GO-FLO water sampler No problem reported    
86096   10.00     1009.50 1011.00  997.60 General Oceanics GO-FLO water sampler No problem reported    
86097   10.00     1263.90 1265.40 1248.30 General Oceanics GO-FLO water sampler No problem reported    
86098   10.00     1518.40 1519.90 1498.80 General Oceanics GO-FLO water sampler No problem reported    
86379   10.00       53.40   54.90   52.50 General Oceanics GO-FLO water sampler No problem reported    
86380   10.00      403.90  405.40  399.50 General Oceanics GO-FLO water sampler No problem reported    
86498   10.00      203.80  205.30  201.50 General Oceanics GO-FLO water sampler No problem reported    
86499   10.00     1649.80 1651.30 1628.10 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 CD62
Departure Date 1991-08-01
Arrival Date 1991-09-04
Principal Scientist(s)W John Gould (Institute of Oceanographic Sciences Deacon 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