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

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

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

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

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.

Litre Meter flow meter

A flow meter used to monitor water flow rates for pumped systems such as ships' continuous seawater supplies.

Sea-Bird SBE 48 Hull Temperature Sensor

The SBE 48 is a high-accuracy temperature recorder with non-volatile memory, designed for shipboard determination of sea surface temperature. Mounted with magnets just below the water line, the SBE 48's temperature sensor is in contact with the inside of the ship's hull. The SBE 48's internal battery runs the real-time clock and can be used to power the instrument for very short deployments; external power is recommended for typical deployments.

Data are recorded in memory and can also be output in real-time in engineering units. Memory capacity exceeds 4.7 million samples of temperature and time; this yields approximately 54 days of data when sampling every 1 sec.

Specifications

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

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

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

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

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: