Metadata Report for BODC Series Reference Number 1903619
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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Problem Reports
No Problem Report Found in the Database
Data Access Policy
Open 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.
If the Information Provider does not provide a specific attribution statement, or if you are using Information from several Information Providers and multiple attributions are not practical in your product or application, you may consider using the following:
"Contains public sector information licensed under the Open Government Licence v1.0."
Narrative Documents
Turner Designs 10AU Field Fluorometer
The Turner Designs 10AU is designed for continuous-flow monitoring or discrete sample analyses of fluorescent species. A variety of optical kits with appropriate filters and lamps are available for a wide range of applications. Individual filters and lamps are also available for customised applications.
Standard optical kits include those for chlorophyll-a (extracted and/or in vivo), phycocyanin, phycoerythrin, CDOM, ammonium, rhodamine and fluorescein dye tracing, crude oil, refined oil, histamine and optical brighteners.
The instrument's light source is a 4 watt lamp and the detector is a photomultiplier tube with a standard detection range of 300-650 nm. A red-sensitive version with a detetion range of 185-970 nm is also available.
Specifications
Operating temperature | 0 to 55°C |
Detector | PhotoMultiplier Tube 300 to 650 nm (standard) 185 to 870 nm (Red) |
Detection Limits: Extracted Chlorophyll-a Rhodamine WT Dye Fluorescein Dye | 0.025 µg L-1 0.01 ppb (in potable water) 0.01 ppb (in potable water) |
Linear range: Extracted Chlorophyll-a Rhodamine WT Dye Fluorescein Dye | 0 to 250µg L-1 0 to 250 ppb 0 to 250 ppb |
Further details can be found in the manufacturer's specification sheet.
Kongsberg Seatex Seapath 200 GPS and Gyrocompass
The Seapath 200 is a highly accurate, real-time heading, attitude and position information system that integrates the best signal characteristics of Inertial Measurement Units (IMU) and Global Positioning System (GPS), using a differential GPS method to acquire this data.
The high-rate motion data is obtained from the Seatex MRU5 inertial sensor and two fixed baseline GPS carrier-phase receivers. The raw data is integrated in a Kalman filter in the Seapath Processing Unit. The IMU contains an accurate linear accelerometer and Bosch Coriolis force angular rate gyros (CFG).
This system is equipped to utilise up to six different DGPS reference stations, it checks for consistency within measurements from the different sensors to ensure reliability and rejects noisy data or reports its inaccuracy. The data is available through various output protocols, RS-232, RS-422 and Ethernet.
This instrument is no longer in production; the main characteristics are presented below, and the specification sheet can be accessed here Kongsberg Seatex Seapath 200 .
Specifications
Scale factor error in pitch, roll and heading | 0.2% RMS |
Heave motion periods | 1 to 25 s |
Accuracy | |
Heading | 0.05° RMS (4 m baseline) 0.075° RMS (2.5 m baseline) |
Roll and Pitch | 0.03° EMS (± 5° amplitude) |
Heave | 5 cm or 5%, whichever is highest |
Position | 0.7 RMS or 1.5 m (95% CEP) with DGPS 0.15 m EMS or 0.4 m (95% CEP) with Searef 100 corrections |
Velocity | 0.03 m s-1 RMS or 0.07 m s-1 (95% CEP) with DGPS |
BIOFLAME Cruise RRS James Clark Ross JR20080221 (JR178, JR179) Underway Surface Hydrography Instrumentation Document
The sea surface hydrographical suite of sensors was fed by the pumped-seawater, non-toxic supply. The seawater intake was located approximately 7 m below the sea surface. The SBE 38 sea surface temperature sensor was located towards the hull near the seawater intake. All other sensors were located in the clean seawater laboratory on the main deck, directly above the intake pipe.
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SeaBird Electronics | SBE45 CTD | Surface hydrography | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Turner Designs | 10-AU Fluorometer | Chlorophyll fluorescence | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Litre Meter | Flow meter | Flow rate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SeaBird Electronics | SBE48 | Hull temperature sensor |
Range | -5 to +35 °C |
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Initial accuracy | ± 0.002°C |
Resolution | 0.0001 °C |
Typical stability (per month) | 0.0002 °C |
Sampling Speed | Approximately 1 Hz (1 sample/sec), or user-programmable 3-sec to 9-hour intervals |
Memory | 4.7 million samples (temperature and time) |
Further details can be found in the manufacturer's specification sheet.
SeaBird MicroTSG Thermosalinograph SBE 45
The SBE45 MicroTSG is an externally powered instrument designed for shipboard measurement of temperature and conductivity of pumped near-surface water samples. The instrument can also compute salinity and sound velocity internally.
The MicroTSG comprises a platinum-electrode glass conductivity cell and a stable, pressure-protected thermistor temperature sensor. It also contains an RS-232 port for appending the output of a remote temperature sensor, allowing for direct measurement of sea surface temperature.
The instrument can operate in Polled, Autonomous and Serial Line Sync sampling modes:
- Polled sampling: the instrument takes one sample on command
- Autonomous sampling: the instrument samples at preprogrammed intervals and does not enter quiescence (sleep) state between samples
- Serial Line Sync: a pulse on the serial line causes the instrument to wake up, sample and re-enter quiescent state automatically
Specifications
Conductivity | Temperature | Salinity | |
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Range | 0 to 7 Sm-1 | -5 to 35°C | |
Initial accuracy | 0.0003 Sm-1 | 0.002°C | 0.005 (typical) |
Resolution | 0.00001 Sm-1 | 0.0001°C | 0.0002 (typical) |
Typical stability (per month) | 0.0003 Sm-1 | 0.0002°C | 0.003 (typical) |
Further details can be found in the manufacturer's specification sheet.
BIOFLAME Cruise RRS James Clark Ross JR20080221 (JR178, JR179) Underway Surface Hydrography Processing Procedures Document
Originator's Data Processing
The originator did not process the data during the cruise, the only procedures implemented throughout the cruise consisted of data retrieval from the previous 24h and logging those into sub directories on the ship's intranet system.
The sea surface hydrography measurements were performed by a number of instruments connected to the ship's flow through system and a temperature sensor located near the flow through intake, at the hull, at 7 m depth.
The originator sent one file containing the sea surface data: Surface temperature by the thermosalinograph and hull sensor, chlorophyll, salinity, conductivity, sound velocity and pump flow rate.
The processing procedures carried out by the originator include:
- check for duplicate dates and times
- standardising time
- check for gaps in data
- check data against defined thresholds
- flagging
- unit conversion
Files delivered to BODC
Filename | Content description | Format | Interval | Start date/time (UTC) | End date/time (UTC) | Comments |
jr179_ocl_exactsec | Meteorology and Surface hydrography | txt | 5s | 17/02/2008 20:30:28 | 11/04/2008 13:14:45 | Data processed by originator |
BODC Data Processing
All sea surface hydrography parameters, were transferred to internal QXF format and matched against BODC codes, as presented in the table below. There was no need to apply unit conversions as the originator's units were similar to the units described on the BODC parameter dictionary.
BODC processing procedures included loading of data and reduction through averaging, visual screening and flagging of anomalous values.
The originator's variables were mapped to appropriate BODC parameter codes as follows:
jr179_ocl_exactsec
Originator's variable | Originator's units | BODC code | BODC units | Comments |
ThermoSalTemp | degrees C | TMESSG01 | degrees C | Remote sensor |
SSTemp | degrees C | TEMPHU01 | degrees C | Hull sensor |
Chloro | µg l-1 | CPHLUMTF | mg m-3 | Equivalent units |
Salinity | - | PSALSU01 | dimensionless | |
Cond | s m-1 | CNDCSG01 | s m-1 | |
Velocity | m s-1 | SVELSG01 | m s-1 | |
flow_rate | l min-1 | INFLTF01 | l min-1 |
Surface hydrography data were screened and N flags applied to absent data values. M flags were applied to TMESSG01, CNDCSG01 and PSALSU01 where anomalous data were identified.
Project Information
BIOFLAME- Biodiversity, Function, Limits and Adaptation from Molecules to Ecosystems
Introduction
This project is part of the BAS GSAC five year research programme. It was funded by NERC and covered a period from 2005 to 2009.
BIOFLAME will study the DNA "fingerprints " of biological evolution to trace the way species adapt to environmental extremes. The methods include high-volume, high-throughput molecular biological approaches, especially DNA sequencing, DNA libraries and micro-array technology on representative samples from the terrestrial and marine ecosystems on and around Antarctica.
BIOFLAME has two components: BIOPEARL (Biodiversity dynamics: Phylogeography, Evolution and Radiation of life) and BIOREACH (Biological Responses to Extreme Antarctic Conditions and Hyper-Extremes) and links with projects and programmes like ACES, CACHE, DISCOVERY2010 and GEACEP.
Scientific Objectives
The main objectives are:
- Understand how the genomes of different species influence their responses to environmental variation and change at the level of individuals, populations, communities and ecosystems
- Find out how the climate change influences biodiversity and affects important ways the ecosystem functions within the Antarctic and globally
- Determine the role of Antarctica and extreme environments in evolutionary change and the development of global biodiversity
Data Availability
Data sets collected during this project are available to the academic community.
Acronyms used in this text:
BAS- British Antarctic Survey
GSAC- Global Science in an Antarctic Context
NERC- Natural Environment Research Council
ACES- Antarctic Climate and the Earth System
CACHE- Climate and Chemistry: forcings, feedbacks and phasings in the Earth System
DISCOVERY2010- Integrating Southern Ocean Ecosystems into the Earth System
GEACEP- Greenhouse to ice-house: Evolution of the Antarctic Cryosphere and Paleoenvironment
Data Activity or Cruise Information
Cruise
Cruise Name | JR20080221 (JR179) |
Departure Date | 2008-02-21 |
Arrival Date | 2008-04-11 |
Principal Scientist(s) | Peter Enderlein (British Antarctic Survey), Robert D Larter (British Antarctic Survey) |
Ship | RRS James Clark Ross |
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 |
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National Oceanography Centre
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