Metadata Report for BODC Series Reference Number 1167086

• 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

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

RBR Ltd Depth Recorder Model DR-1050

Single channel data logger.

Manufacturer's specifications:
Case size: 230 mm x 38 mm
Material: Delrin (acetal copolymer); titanium (for up to 10,500 m)
Depth ratings: Delrin housing 10/20/50/100/200/500/740 m (dBar); titanium 1000/2000/4000/6000/10,000 m (dBar)
Accuracy: ±0.05% full scale
Resolution: <0.001% full scale
Time Constant: < 10 msec

The DR-1050 uses an internal Keller piezo-resistive strain gauge sensor (an absolute pressure sensor). Atmospheric pressure must be subtracted from the absolute pressure to obtain water depth. The standard depth sensors are calibrated at RBR to better than ±0.05% full scale. Using reliable semiconductor technology and a 316 stainless steel housing, the depth sensors are developed for long-term stability in harsh environments. This is also reflected in their operating temperature range of -40°C to 125°C. Typical depth hysteresis of the depth sensor is ±0.015%FS, and it has a response time of 0.1 msec.

Data are uploaded from the logger and processed using the RBR Windows Data Logger Software.

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.

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

Marine Scotland mooring (806), Stonehaven Long Term Monitoring position

The mooring was located at 56° 57.84' N, 02° 06.96' W in a nominal water depth of 46m.

The mooring was deployed on 06 July 2011 by Marine Scotland during RV Scotia cruise 0811S. The mooring was trawled off position but was recovered by the RV Scotia on 17 September 2011, during cruise 1111S. Instrumentation details are included in the following table.

Related Data Activity activities are detailed in Appendix 1

Cruise

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:

SeaDataNet Quality Control Flags

The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

Appendix 1: 806

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.