Metadata Report for BODC Series Reference Number 1167049
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
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Data Identifiers |
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Time Co-ordinates(UT) |
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Parameters |
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Problem Reports
No Problem Report Found in the Database
Quality Control Report
Occasionally, for short periods, temperature and salinity signals are obscured by noise. Clear spikes have been flagged, but it is not always noise from genuine variability, and BODC quality control aims to err on the side of flagging too little rather than too much.
Temperature data from Marine Scotland moorings 801/2, 801/3 and 801/6 (BODC series references 1167037, 1167049, 1167062, respectively) were logged at 0.01°C precision, rather than the 0.001°C expected for the parameter. Otherwise, these temperature data show clear agreement with the higher precision temperature record from the same site.
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
Vemco Minilog8 TR temperature logger
The VEMCO Minilog8-TR is a miniature data logger that records temperature at a user programmed time interval. It is housed in a waterproof cylinder and the temperature sensor is mounted on a protruding stainless steel probe.
Specifications
Memory | 16 or 64k memory size, approximately 8000 readings stored in non-volatile Electrically Erasable Programmable Read Only Memory (EEPROM). Logging duration is between 1 second to 6 hours for up to 5 years depending on the logging interval. |
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Data Retention | 20 years. |
Temperature Range | -5 to 40 °C; 0.1-0.2 °C resolution; ±0.2-0.3 °C accuracy with factory calibration. |
Maximum Depth | 680 m |
Communication Link | Infrared LED. No external connections are required. Full memory downloads in 3 to 6 minutes. |
Battery | Internal lithium battery with life of up to 5 years or up to 700- 1000 full deployments. |
Further details can be found in the manufacturer's specification sheet.
BODC Processing
Data were received in ASCII format files. The series were transferred to BODC's in-house format. The following table shows how the variables within the file were mapped to the appropriate BODC parameter codes.
Original parameter name | Original Units | BODC Parameter Code | BODC Units | Comments |
---|---|---|---|---|
Pressure | decibars | PREXPR01 | decibars | Not recorded at all moorings |
Temperature | °C | TEMPPR01 | °C | |
Salinity | ppt | PSALPR01 | Dimensionless | Not recorded at all moorings |
Following transfer to QXF, the data were visually screened using in house BODC software. Any data considered as suspect were flagged accordingly. The originator's quality control flags were retained during transfer.
Originator's Data Processing
Marine Scotland applied the standard manufacturers' calibrations to all data and produced ASCII files for submission to BODC. Data files (.hmo) were named according to the mooring code and the instrument number. The file contained pressure and/or temperature. Salinity data, where available, were contained in a file appended 's'. Header metadata were collated in an additional file (.frm).
Project Information
No Project Information held for the Series
Data Activity or Cruise Information
Data Activity
Start Date (yyyy-mm-dd) | 2011-05-07 |
End Date (yyyy-mm-dd) | 2011-06-15 |
Organization Undertaking Activity | Marine Scotland Aberdeen Marine Laboratory |
Country of Organization | United Kingdom |
Originator's Data Activity Identifier | 801 |
Platform Category | subsurface mooring |
Marine Scotland mooring (801), Stonehaven Long Term Monitoring position
The mooring was located at 56° 57.89' N, 02° 06.81' W in a nominal water depth of 43m.
The mooring was deployed on 07 May 2011 by Marine Scotland during RV Scotia cruise 0511S. The mooring was recovered early as the surface marker parted from the instrument line. Instrumentation details are included in the following table.
Instrument type | Serial Number | Deployment start | Deployment end | Instrument depth (m) | Comments |
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Aanderaa Seaguard RCM IW | 69 | 07-05-2011 | 15-06-2011 | 14 | - |
VEMOCO Minilogger TR | 6802 | 07-05-2011 | 15-06-2011 | 24 | - |
VEMOCO Minilogger TR | 6804 | 07-05-2011 | 15-06-2011 | 32 | - |
Sea-Bird SBE37-SM | 1684 | 07-05-2011 | 15-06-2011 | 40 | - |
Aanderaa Seaguard RCM IW | 70 | 07-05-2011 | 15-06-2011 | 41 | - |
VEMOCO Minilogger TDR | 4283 | 07-05-2011 | 15-06-2011 | 43 | No pressure data - faulty sensor |
Related Data Activity activities are detailed in Appendix 1
Cruise
Cruise Name | 0511S |
Departure Date | 2011-05-07 |
Arrival Date | 2011-05-23 |
Principal Scientist(s) | George Slesser (Marine Scotland Aberdeen Marine Laboratory) |
Ship | FRV Scotia |
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 |
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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 |
B | nominal value |
Q | value below limit of quantification |
Appendix 1: 801
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 Identifier | Data Category | Start date/time | Start position | Cruise |
---|---|---|---|---|
1167050 | Hydrography time series at depth | 2011-05-07 10:35:00 | 56.96483 N, 2.1135 W | FRV Scotia 0511S |
1166998 | Currents -subsurface Eulerian | 2011-05-07 10:40:00 | 56.96483 N, 2.1135 W | FRV Scotia 0511S |
1167001 | Currents -subsurface Eulerian | 2011-05-07 10:40:00 | 56.96483 N, 2.1135 W | FRV Scotia 0511S |
1167037 | Hydrography time series at depth | 2011-05-07 12:45:00 | 56.96483 N, 2.1135 W | FRV Scotia 0511S |
1167062 | Hydrography time series at depth | 2011-05-07 13:00:00 | 56.96483 N, 2.1135 W | FRV Scotia 0511S |