Metadata Report for BODC Series Reference Number 466445

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

Data Category

CTD or STD cast

Instrument Type

Name	Categories
Chelsea Technologies Group Aqualog CTD	fluorometers; CTD; water temperature sensor; salinity sensor; dissolved gas sensors

Instrument Mounting

research vessel

Originating Country

United Kingdom

Originator

Originating Organization

Scottish Office Agriculture Environment and Fisheries Department Aberdeen Marine Laboratory (now Marine Scotland Aberdeen Marine Laboratory)

Processing Status

banked

Online delivery of data

Download available - Ocean Data View (ODV) format

Project(s)

Data Identifiers

Originator's Identifier	LS09/96/0007
BODC Series Reference	466445

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm)	1996-06-19 17:42
End Time (yyyy-mm-dd hh:mm)	-
Nominal Cycle Interval	1.0 metres

Spatial Co-ordinates

Latitude	61.98770 N ( 61° 59.3' N )
Longitude	1.99930 W ( 1° 60.0' W )
Positional Uncertainty	Unspecified
Minimum Sensor or Sampling Depth	1.0 m
Maximum Sensor or Sampling Depth	154.0 m
Minimum Sensor or Sampling Height	1346.0 m
Maximum Sensor or Sampling Height	1499.0 m
Sea Floor Depth	1500.0 m
Sea Floor Depth Source	-
Sensor or Sampling Distribution	Variable common depth - All sensors are grouped effectively at the same depth, but this depth varies significantly during the series
Sensor or Sampling Depth Datum	Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum	Instantaneous - Depth measured below water line or instantaneous water body surface

Parameters

BODC CODE	Rank	Units	Title
CNDCPR01	1	Siemens per metre	Electrical conductivity of the water body by in-situ conductivity cell
CPHLPR01	1	Milligrams per cubic metre	Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer
DEPHPR01	1	Metres	Depth (spatial coordinate) relative to water surface in the water body by profiling pressure sensor and conversion to seawater depth using UNESCO algorithm
PSALPR01	1	Dimensionless	Practical salinity of the water body by conductivity cell and computation using UNESCO 1983 algorithm
TEMPST01	1	Degrees Celsius	Temperature of the water body by CTD or STD

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

Chelsea Technologies Aqualog CTD

The Aqualog is a self-contained unit designed to measure pressure, temperature, conductivity, dissolved oxygen and fluorometry in a variety of modes, including vertical profiling, towed undulator and short-term moorings.

It is controlled by a microprocessor and comprises a CPU board, a memory board, an ADC board, a power supply/supply control board and a backplane. This logger can cater for 16 analogue input channels, with 60000 or 250000 12 bit resolution data point capacity. Data communication is carried out over a RS232 interface and the data points are stored in non-volatile battery backed memory.

The technical details are presented below:

Logging regime	Configurable, intermittent or continuous modes
Maximum logging rate	16 channels per second
Analogue Input range options	-1 to 1 V -2 to 2 V -10 to 10 V
Resolution	1 in 4096 plus sign

RV Lowland Searcher Cruise 09/96H CTD Data Documentation

Documentation for CTD data collected on Lowland Searcher 09/1996H (17 June - 1 July 1996) by Fisheries Research Services, Aberdeen.

The temperature and salinity data were collected using a Chelsea instrument which was calibrated using bottle samples and thermometer readings to produce the following equations:

T(cal) = T(obs)
C(cal) = 1.106472C(obs) - 2.935917

For any information, contact:

George Slesser
Ocean Climate Group
FRS, Marine Laboratory Aberdeen
PO Box 101
Victoria Road
Aberdeen AB11 9DB
G.Slesser@marlab.ac.uk

Project Information

No Project Information held for the Series

Data Activity or Cruise Information

Cruise

Cruise Name	0996H
Departure Date	1996-06-17
Arrival Date	1996-07-01
Principal Scientist(s)	Ron Stagg (Scottish Office Agriculture Environment and Fisheries Department Aberdeen Marine Laboratory)
Ship	RV Lowland Searcher

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