Metadata Report for BODC Series Reference Number 43442

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
Neil Brown MK3 CTD	CTD; water temperature sensor; salinity sensor; dissolved gas sensors

Instrument Mounting

research vessel

Originating Country

United Kingdom

Originator

Originating Organization

Institute of Oceanographic Sciences Wormley Laboratory (now National Oceanography Centre, Southampton)

Processing Status

QC in progress

Online delivery of data

Download not available

Project(s)

Data Identifiers

Originator's Identifier	STATION 61
BODC Series Reference	43442

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm)	1978-09-07 08:00
End Time (yyyy-mm-dd hh:mm)	1978-09-07 08:33
Nominal Cycle Interval	-

Spatial Co-ordinates

Latitude	59.91170 N ( 59° 54.7' N )
Longitude	9.01170 W ( 9° 0.7' W )
Positional Uncertainty	Unspecified
Minimum Sensor or Sampling Depth	-
Maximum Sensor or Sampling Depth	-
Minimum Sensor or Sampling Height	-
Maximum Sensor or Sampling Height	-
Sea Floor Depth	-
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	-

Parameters

BODC CODE	Rank	Units	Title
CNDCPR01	1	Siemens per metre	Electrical conductivity of the water body by in-situ conductivity cell
PRESPR01	1	Decibars	Pressure (spatial coordinate) exerted by the water body by profiling pressure sensor and correction to read zero at sea level
SSALPR01	1	Parts per thousand	Salinity of the water body by conductivity cell
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

Neil Brown MK3 CTD

The Neil Brown MK3 conductivity-temperature-depth (CTD) profiler consists of an integral unit containing pressure, temperature and conductivity sensors with an optional dissolved oxygen sensor in a pressure-hardened casing. The most widely used variant in the 1980s and 1990s was the MK3B. An upgrade to this, the MK3C, was developed to meet the requirements of the WOCE project.

The MK3C includes a low hysteresis, titanium strain gauge pressure transducer. The transducer temperature is measured separately, allowing correction for the effects of temperature on pressure measurements. The MK3C conductivity cell features a free flow, internal field design that eliminates ducted pumping and is not affected by external metallic objects such as guard cages and external sensors.

Additional optional sensors include pH and a pressure-temperature fluorometer. The instrument is no longer in production, but is supported (repair and calibration) by General Oceanics.

Specifications

These specification apply to the MK3C version.

Pressure

Temperature

Conductivity

Range

6500 m

3200 m (optional)

-3 to 32°C

1 to 6.5 S cm^-1

Accuracy

0.0015% FS

0.03% FS < 1 msec

0.0005°C

0.003°C < 30 msec

0.0001 S cm^-1

0.0003 S cm^-1 < 30 msec

Further details can be found in the specification sheet.

Project Information

No Project Information held for the Series

Data Activity or Cruise Information

Cruise

Cruise Name	S5C/78
Departure Date	1978-08-24
Arrival Date	1978-09-09
Principal Scientist(s)	James Crease (Institute of Oceanographic Sciences Wormley Laboratory)
Ship	RRS Shackleton

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