Metadata Report for BODC Series Reference Number 1640541
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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Time Co-ordinates(UT) |
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Problem Reports
No Problem Report Found in the Database
Data Access Policy
Open Data supplied by Natural Environment Research Council (NERC)
You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."
Narrative Documents
Star-Oddi DST centi-T Temperature Recorder
Description
The Data Storage Tag (DST) centi-T is a small submersible data logger with a temperature sensor. Recorded data is stored in its internal memory with a real-time clock reference for each measurement.
The sensors are housed in a strong waterproof cylinder made of alumina (an implantable biocompatible ceramic).
Specifications
Memory | 174,000 measurements in total; 261,819 bytes / temperature 1.5 bytes | ||
---|---|---|---|
Data Retention | 25 years | ||
Temperature Data | Temperature resolution | 0.032 °C | |
Temperature accuracy | ± 0.1 °C | ||
Temperature range | - 1 °C to + 40 °C | ||
Temperature response time | Time constant (63%) reached in 20 sec. | ||
Dimensions | 15 mm x 46 mm | ||
Communication Link | Downloaded via PC interface box. Connects to a computer via a RS-232C standard serial interface. | ||
Battery | A 3.6 V lithium battery with a life of 7 years for a sampling interval of 10 minutes or greater. |
Further details are available in the manufacturer's centi-T specification document.
Wave Hub site temperature logger mooring May 2012: Originator's processing
The temperature logger instruments were deployed from 13 May 2012 to 24 May 2012 using the Plymouth University vessel, RV Falcon Spirit which is a 14 m catamaran.
Data Processing
No post-processing was applied to the files. They were submitted to BODC as raw ASCII format from the instrumentation.
Field Calibrations
No field calibrations were undertaken.
Wave Hub site temperature logger mooring May 2012: Processing by BODC
Data from three instruments arrived at BODC in ASCII files. This includes 2 Star-Oddi DST CTD files, 5 Star-Oddi DST centi-TD files and 9 Star-Oddi DST centi-T files with one file for each sensor used. The following table shows how the variables within the files were mapped to appropriate BODC parameter codes:
Originator's Variable | Units | Description | BODC Parameter Code | Units | Comment |
---|---|---|---|---|---|
Temperature | °C | Temperature of the water body | TEMPPR01 | °C | Applies to all files supplied. |
Pressure | Bars | Pressure (measured variable) exerted by the water body by semi-fixed in-situ pressure sensor and corrected to read zero at sea level | PREXPR01 | Dbars | Conversion applied to data to convert from bars to dbars (multiply by 10). Applies to only files linked to the DST centi-TD instrument |
Salinity | psu | Practical salinity of the water body by CTD and computation using UNESCO 1983 algorithm | PSALST01 | dimensionless | Applies to only files linked to the DST CTD instrument |
The reformatted data were visualised using the in-house visualisation software. Suspect data were marked by adding an appropriate quality control flag, missing data by both setting the data to an appropriate value and setting the quality control flag. The data files have been modified to remove data points that were gathered when the instruments were being deployed and recovered.
Project Information
NERC Discovery Science - Wave Hub baseline study
Background
This proposal has been designed to fill urgent scientific gaps in relation to baseline studies in renewable energy test sites and to take advantage of the unique opportunity presented by the development of the Wave Hub demonstrator site.
This project was funded by the NERC grant - NE/I015108/1 Wave Hub baseline study.
It is essential to obtain this information prior to deployment of infrastructure to understand the impact of arrays of wave devices together with the Wave Hub infrastructure. This opportunity has already been lost at other wave energy device testing sites (such as at European Marine Energy Centre (EMEC), Orkney), because devices, together with infrastructure such as moorings and cabling have already been installed.
This project is also driven by the need to expand the science capability and resources over the next five years to address the questions which have arisen directly in respect of marine renewable energy development and sustainable use of marine resources. Hence, many of the activities are also viewed as capacity building and skill development within Plymouth Marine Laboratory (PML) - Partnership for Research in Marine Renewable Energy (PRIMaRE) that are pivotal to address the scientific requirements of the renewable energy sector.
Scientific Objectives
To obtain:
- Detailed oceanographic study at the Wave Hub site and surrounds - covering the whole range of physical, chemical and biological parameters before the deployment of Wave Hub infrastructure and wave energy devices.
- Ensure data acquisition in time and space to allow development of physical and ecosystem models at scales relevant to wave arrays. Ultimately models will make predictive assessments of the extent, timescales and intensity of ecosystem impacts and perturbation resulting from implementation of wave energy arrays.
- Engagement of environmental economists to ensure these same data can be used to develop economic valuation estimates of critical life supporting ecosystem services at scales appropriate to arrays of wave devices for comparison with other uses of marine space.
- To address the questions which have arisen directly in respect of marine renewable energy development and sustainable use of marine resources.
Fieldwork
The data were acquired from the RV Falcon Spirit, the Plymouth University vessel. The small 14m catermaran was used on a daily basis from 13 May 2012 to 24 May 2012 with the idea to capture high quality, spatially resolved field data ahead of the Wave Hub construction.
Instrumentation
Types of instruments/measurements:
- CTDs
- Moored temperature loggers
- VMADCP
- Moored ADCPs
- Towed undulated CTD
Contacts
Collaborator | Organisation |
---|---|
Dr Phil Hosegood (lead) | University of Plymouth School of Marine Science and Engineering |
Dr Ricardo Torres | Plymouth Marine Laboratory, U.K |
Data Activity or Cruise Information
Data Activity
Start Date (yyyy-mm-dd) | 2012-05-13 |
End Date (yyyy-mm-dd) | 2012-05-24 |
Organization Undertaking Activity | University of Plymouth School of Marine Science and Engineering |
Country of Organization | United Kingdom |
Originator's Data Activity Identifier | Wave Hub |
Platform Category | subsurface mooring |
Wave Hub site temperature logger mooring May 2012
Deployment | Plymouth University vessel, RV Falcon Spirit (2012-05-13 12:00) |
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Recovery | Plymouth University vessel, RV Falcon Spirit (2012-05-24 19:39) |
Deployment Position | 50.345447°N, 5.601016°W |
Water Depth (m) | 55.5 |
The thermistor string was kept upright by a large sub-surface float.
Instruments deployed on the mooring
The DST CTD recorded temperature, conductivity and pressure.
The centi-T recorded temperature.
The centi-TD recorded temperature and pressure.
The Originator has advised that the salinity and pressure readings from the Star-Oddi DST CTD instrument are not of good quality and are to be used with caution.
Instrument codes
DST CTD - Star-Oddi DST CTD
centi-T - Star-Oddi DST centi-T Temperature Recorder
centi-TD - Star-Oddi DST centi-TD Temperature and Depth Recorder
Height above bed (m) | Instrument type | Instrument serial number |
---|---|---|
46.5 | DST CTD | 6090 |
45 | centi-T | 5744 |
42 | centi-TD | 5749 |
39 | centi-T | 5743 |
36 | centi-T | 5742 |
33 | centi-TD | 5748 |
30 | centi-T | 5741 |
27 | centi-T | 5696 |
24 | centi-TD | 5747 |
21 | centi-T | 5695 |
15 | centi-T | 5690 |
12 | centi-TD | 5605 |
9 | centi-T | 5510 |
6 | centi-TD | 5604 |
3 | centi-T | 5509 |
1.5 | DST CTD | 6091 |
Related Data Activity activities are detailed in Appendix 1
Cruise
Cruise Name | 2012-05 |
Departure Date | 2012-05-13 |
Arrival Date | 2012-05-24 |
Principal Scientist(s) | Phil Hosegood (University of Plymouth School of Marine Science and Engineering) |
Ship | RV Falcon Spirit |
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 |
B | nominal value |
Q | value below limit of quantification |
Appendix 1: Wave Hub
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 |
---|---|---|---|---|
1640485 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640497 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640504 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640516 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640528 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640553 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640565 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640577 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640589 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640590 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640608 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640621 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640633 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640645 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |
1640657 | Hydrography time series at depth | 2012-05-13 14:18:00 | 50.34545 N, 5.60102 W | RV Falcon Spirit 2012-05 |