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Metadata Report for BODC Series Reference Number 2022549


Metadata Summary

Data Description

Data Category Hydrography time series at depth
Instrument Type
NameCategories
Sea-Bird SBE 37 MicroCat SM-CT with optional pressure (submersible) CTD sensor series  water temperature sensor; salinity sensor
Instrument Mounting subsurface mooring
Originating Country United Kingdom
Originator Mr Povl Abrahamsen
Originating Organization British Antarctic Survey
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) ORCHESTRA
 

Data Identifiers

Originator's Identifier OP6_1719_1_SBE37_8267_2285M
BODC Series Reference 2022549
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2017-04-20 14:40
End Time (yyyy-mm-dd hh:mm) 2019-01-30 13:19
Nominal Cycle Interval 600.0 seconds
 

Spatial Co-ordinates

Latitude 60.56277 S ( 60° 33.8' S )
Longitude 41.63182 W ( 41° 37.9' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor or Sampling Depth 2285.0 m
Maximum Sensor or Sampling Depth 2285.0 m
Minimum Sensor or Sampling Height 63.1 m
Maximum Sensor or Sampling Height 63.1 m
Sea Floor Depth 2348.1 m
Sea Floor Depth Source PEVENT
Sensor or Sampling Distribution Fixed common depth - All sensors are grouped effectively at the same depth which is effectively fixed for the duration of the series
Sensor or Sampling Depth Datum Approximate - Depth is only approximate
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODERankUnitsTitle
AADYAA011DaysDate (time from 00:00 01/01/1760 to 00:00 UT on day)
AAFDZZ011DaysTime (time between 00:00 UT and timestamp)
ACYCAA011DimensionlessSequence number
CNDCPR011Siemens per metreElectrical conductivity of the water body by in-situ conductivity cell
TEMPPR011Degrees CelsiusTemperature of the water body

Definition of Rank

  • Rank 1 is a one-dimensional parameter
  • Rank 2 is a two-dimensional parameter
  • Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

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

Sea-Bird SBE 37-SM MicroCAT

The SBE 37-SM MicroCAT is a high accuracy conductivity and temperature recorder (pressure optional). Designed for moorings and other long-duration, fixed-site deployments, MicroCATs have non-corroding titanium housings rated for operation to 7000 metres or pressure sensor full scale-range. Communication with the MicroCAT is over an internal, 3-wire, RS-232C link. The MicroCAT's aged and pressure-protected thermistor has a long history of exceptional accuracy and stability (typical drift is less than 0.002° per year). Electrical isolation of the conductivity electronics eliminates any possibility of ground-loop noise.

Specifications

  Temperature
(°C)
Conductivity (S m-1) Optional Pressure
Measurement Range -5 to +35 0 to 7 (0 to 70 mS cm-1) 0 to full scale range: 20 / 100 / 350 / 1000 / 2000 / 3500 / 7000 metres
Initial accuracy 0.002 0.0003 0.1% of full scale range
Typical Stability 0.0002 per month 0.0003 per month 0.05% of full scale range per year
Resolution 0.0001 0.00001 0.002% of full scale range
Sensor Calibration +1 to +32 0 to 6; physical calibration over range 2.6 to 6 S m-1, plus zero conductivity (air) Ambient pressure to full scale range in 5 steps
Memory 8 Mbyte non-volatile FLASH memory
Data Storage Converted temperature and conductivity: 6 bytes per sample (3 bytes each)
Time: 4 bytes per sample
Pressure (optional): 5 bytes per sample
Real-Time Clock 32,768 Hz TCXO accurate to ±1 minutes year-1
Standard Internal Batteries Nominal 10.6 Ampere-hour pack consisting of 12 AA lithium batteries. Provides sufficient capacity for more than 630,000 samples for a typical sampling scheme
Housing Titanium pressure case rated at 7000 metres
Weight (without pressure) In water: 2.3 kg
In air: 3.8 kg

Further information can be found via the following link: SBE 37-SM MicroCAT Datasheet

BODC Data Processing

Data Processing

The data arrived at BODC as individual .mat files containing data collected on moorings OP1, OP2, OP3, OP4, OP5, OP6, OP7, CI1 and CI2. They were submitted as part of an accession which includes data from several mooring instruments e.g. Aquadopp, RCM8, RCM11, RBR, SBE37 and SBE39.

Reformatting

Parameters in the originator's files were reformatted into an internal file format using BODC standard procedures.

The following table lists all the parameters included in the internal format files, showing how the originator's variables as named in the matlab files were mapped to appropriate BODC parameter codes.

Originator's Variable Originator's Units BODC Parameter Code BODC Units Comments
temp C TEMPPR01 C

 

cond mS cm-1 CNDCPR01 S m-1 Conversion by multiplying by 0.1
    2007 - 2015 only    
press dbar PREXMCAT dbar Used for SBE37 data
press dbar PRESPS01 dbar Used for SBE39 data
    2015 - 2017 only    
press dbar PREXPR01 dbar Used for both SBE39 and SBE37 data
press_inferred dbar PREXSINT dbar Used for both SBE39 and SBE37 data where pressure was inferred from a neighbouring instrument
    2017 - 2019 only    
press dbar PREXPR01 dbar Used for both SBE39 and SBE37 data where a pressure sensor was available on the intrument

No derived parameters were calculated by BODC. Please note that not all parameters are present in all files.

Screening

Quality control flags were automatically added to data outside the expected parameter specific range during the reformatting process. All parameters were then visualised and screened using in house software, and any improbable or missing data point was assigned a quality control flag.

Originator's Data processing

Sampling strategy

Sampling was carried out as part of the BAS LTMS (British Antarctic Survey Long Term Monitoring and Survey) until 2016. From 2016 onwards the moorings are split between 'The Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports (ORCHESTRA)' project and 'Dynamics of the Orkney Passage Outflow (DynOPO)' project.

The projects involve the deployment of moorings CI1, CI2, OP1, OP2, OP3, OP4, OP5, OP6 and OP7 in the Southern Ocean, situated north of Coronation Island and the Orkney Passage in the Weddell and Scotia Sea.

Moorings CI1 and CI2 were deployed from 2005 to 2007 and moorings OP1, OP2, OP3, OP4, OP5 and OP6 have been continuously maintained since 2007 with the addition of OP7 in 2015.

SBE 37 and SBE39 instruments were deployed on the moorings. Data have been collected at variable intervals: 5 minutes interval on the Coronation Island moorings, 7.5 minute interval on the instruments deployed on OP2 and OP3 in 2007 and 15 minute intervals since then. Gaps in the series may be caused by either instruments not being recovered, or data not being collected due to instrument malfunction.

Data processing

Little information is known with regards to the exact details of the calibrations carried out on the mooring data. Data processing, visualisation and calibration were carried out through the use of scripts for Matlab version R2014b produced and ran by the originator.

An offset has been applied some of the channels. The values for each deployment/instrument/channel combination are shown in the table below:

Mooring Time period (UT) Depth (m) Serial Number Offset Applied Channel
2009 - 2011 Deployment
OP3 2009-03-02 - 2011-02-25 1516 2956 0.-0.0036 Conductivity
2011 - 2013 Deployment
OP1 2011-03-26 - 2013-04-01 2170 7386 0.0136 Conductivity
OP1 2011-03-26 - 2013-04-01 2944 7385 0.0157 Conductivity
OP1 2011-03-26 - 2013-04-01 3633 7387 0.0121 Conductivity
OP2 2011-03-27 - 2013-03-31 1450 2707 0.0036 Conductivity
OP2 2011-03-27 - 2013-03-31 1594 2956 0.0071 Conductivity
OP2 2011-03-27 - 2013-03-31 1733 7384 0.0107 Conductivity
OP2 2011-03-27 - 2013-03-31 3090 7380 0.0079 Conductivity
OP4 2011-03-27 - 2013-03-03 2201 7383 0.0036 Conductivity
OP4 2011-03-27 - 2013-03-03 2935 7382 0.0086 Conductivity
OP6 2012-04-01 - 2013-03-30 2290 8267 0.0093 Conductivity
2013 - 2015 Deployment
OP1 2013-04-02 - 2015-03-20 2144 7386

-6.0*10-4

-0.0018

Temperature

Conductivity

OP1 2013-04-02 - 2015-03-20 2917 7387

-4.0*10-4

0.0081

Temperature

Conductivity

OP1 2013-04-02 - 2015-03-20 3605 7385 0.0091 Conductivity
OP2 2013-04-01 - 2015-03-20 1510 2956

-0.0019

-0.0051

Temperature

Conductivity

OP2 2013-04-01 - 2015-03-20 2269 7381

4.0*10-4

0.0018

Temperature

Conductivity

OP2 2013-04-01 - 2015-03-20 3002 7380

9.0*10-4

0.0032

Temperature

Conductivity

OP3 2013-04-01 - 2015-03-20 1450 2707

9.0*10-4

1.4*10-4

Temperature

Conductivity

OP4 2013-04-03 - 2015-03-21 2196 7382

-0.50

0.0011

0.0041

Pressure

Temperature

Conductivity

OP4 2013-04-03 - 2015-03-21 2930 7383

9.0*10-4

0.0024

Temperature

Conductivity

OP6 2013-03-30 - 2015-03-21 2321 8267

0.0011

0.0154

Temperature

Conductivity

2015 - 2017 Deployment
OP1 2015-04-02 - 2017-04-05 3590 7316

0.8

0.0017

0.0003

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 3510 7297

-1

0.0035

0.0004

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 4310 7314

0.3

-0.0028

0.0009

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 3310 7299

-0.0003

0.0004

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 3210 7294

0.1

0.0005

0.0004

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 3110 7311

-0.7

-0.005

0.0004

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 3010 8076

0.4

-0.0045

0.0016

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 2910 7310

-0.0035

0.0002

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 2810 7302

-0.3

-0.0017

0.0014

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 2610 9379

-0.2

0.001

0.0061

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 2509 7307

-0.4

-0.0015

-0.0003

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 2260 7313

-3.8

-0.0033

0.0006

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 2110 9394

-1.5

-0.0031

0.0005

Pressure

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 1960 7309

0.0007

-0.0002

Conductivity

Temperature

OP1 2015-04-02 - 2017-04-05 1810 7308

-0.2

0.0013

-0.0009

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2991 7288

-0.5

-0.0058

0.0002

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2808 7290

-0.0017

0.0002

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2708 7291

-0.5

-0.0025

0.0002

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2608 7289

-0.5

-0.0005

0.0002

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2408 7292

0.5

-0.0036

-0.0001

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2258 7293

-0.0038

0.0001

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 2108 7295

0.5

-0.0006

0.0006

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 1958 8075

-0.0045

0.0006

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 1808 7303

0.1

0.015

0.0001

Pressure

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 1658 7382

0.003

0.0016

Conductivity

Temperature

OP2 2015-04-04 - 2017-04-14 1508 7387

0.004

0.0002

Conductivity

Temperature

OP3 2015-04-03 - 2017-04-15 1230 4897 15.2261 Pressure
OP3 2015-04-02 - 2017-04-03 1722 7386

-0.003

0.0001

Conductivity

Temperature

OP3 2015-04-02 - 2017-04-03 1439 7383

0.0026

0.0015

Conductivity

Temperature

OP4 2015-04-02 - 2017-04-07 2931 2956

9

-0.0056

-0.0012

Pressure

Conductivity

Temperature

OP4 2015-04-02 - 2017-04-07 1838 2707

-1

-0.0018

-0.0003

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 3377 12458

-1.6

0.0005

0.001

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 3297 12456

-1.2

0.0005

0.0015

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 3197 12455

-0.4

0.0005

0.0006

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 3097 12464

-0.7

0.0005

0.0011

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 2947 12469

-1.4

0.0005

0.0009

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 2797 12476

-1.5

0.0005

0.0007

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 2647 12475

-0.9

0.0005

0.0015

Pressure

Conductivity

Temperature

OP5 2015-04-02 - 2017-04-06 2497 12473

-0.9

0.0005

0.0015

Pressure

Conductivity

Temperature

OP6 2015-04-02 - 2017-04-06 2319 8267

0.012

0.001

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 3016 7298

0.2

0.0024

0.0002

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 2836 12462

-1.7

-0.0008

0.0012

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 2736 7385

0.0025

0.0004

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 2636 7312

-0.2

0.0008

0.0008

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 2436 7304

-0.4

-0.0005

0.0008

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 2286 7381

0.003

0.0009

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 2136 7305

-0.3

0.0032

0.0009

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 1986 7306

0.0053

0.0008

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 1836 7315

0.5928

0.0045

0.0012

Pressure

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 1686 7380

0.0045

0.0013

Conductivity

Temperature

OP7 2015-04-02 - 2017-04-09 1536 12463

-1

-0.0015

0.0012

Pressure

Conductivity

Temperature

2017 - 2019 Deployment
OP1 2017-04-18 - 2019-01-29 3674 7382

0

0.0033

0.0011

Pressure

Conductivity

Temperature

OP1 2017-04-18 - 2019-01-29 2984 7381

0

1.0*10-3

4.0*10-4

Pressure

Conductivity

Temperature

OP1 2017-04-18 - 2019-01-29 2630 4413 - -
OP1 2017-04-18 - 2019-01-29 2211 7380

0

0.0028

8.0*10-4

Pressure

Conductivity

Temperature

OP1 2017-04-18 - 2019-01-29 1877 4409 - -
OP2 2017-04-18 - 2019-01-27 3037 7386

0

-0.0058

-3.0*10-4

Pressure

Conductivity

Temperature

OP2 2017-04-18 - 2019-01-27 2333 7385

0

-7.0*10-4

0

Pressure

Conductivity

Temperature

OP2 2017-04-18 - 2019-01-27 1937 0083 - -
OP2 2017-04-18 - 2019-01-27 1538 7383

0

0.0030

0.0012

Pressure

Conductivity

Temperature

OP3 2017-04-19 - 2019-01-29 1718 8541

1

0.0022

4.0*10-4

Pressure

Conductivity

Temperature

OP3 2017-04-19 - 2019-01-29 1718 8540

1

7.0*10-4

4.0*10-4

Pressure

Conductivity

Temperature

OP4 2017-04-21 - 2019-01-29 2930 2678

-1.5

5.0*10-4

4.0*10-4

Pressure

Conductivity

Temperature

OP4 2017-04-21 - 2019-01-29 2200 4713 - -
OP4 2017-04-21 - 2019-01-29 1842 4418 - -
OP5 2017-04-19 - 2019-01-29 3369 7387

0

0.0022

-3.0*10-4

Pressure

Conductivity

Temperature

OP5 2017-04-19 - 2019-01-29 2988 4716 - -
OP6 2017-04-20 - 2019-01-30 2292 8267

-1.0*10-3

1.0*10-3

Conductivity

Temperature

Several instruments deployed in the 2013/15 period show evidence of knock-down but the data colleaction seems to be unnafected. According to the originator some of the moorings were deployed with insufficient buyoancy which caused the knockdowns. These instances are especially visible on moorings OP1 and OP2, Series Reference number 1840205, 1840229, 1840254, 1840266 and 1840278

Several instruments deployed in the 2015/17 period did not have a pressure sensor and used inferred pressure calculated from the closest neigbhouring pressure sensor. This includes five SBE39 instruments (s/n 4413, 4716, 4713, 4418 and 4409) and one SBE37 instrument (s/n 8267).

Several instruments deployed in the 2017/19 period did not have a pressure sensor, therefore no pressure channel was transferred with the data and only a nominal depth is used in the metadata. This includes all SBE39 instruments (s/n 4413, 4409, 0083, 4713, 4418 and 4716) and one SBE37 instrument (s/n 8267).


Project Information

Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports (ORCHESTRA)

The Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports (ORCHESTRA) is a £8.4 million, five year (2016-2021) research programme funded by the Natural Environment Research Council (NERC). The aim of the research is to to advance the understanding of, and capability to predict, the Southern Ocean's impact on climate change via its uptake and storage of heat and carbon. The programme will significantly reduce uncertainties concerning how this uptake and storage by the ocean influences global climate, by conducting a series of unique fieldwork campaigns and innovative model developments.

Background

ORCHESTRA represents the first fully-unified activity by NERC institutes to address these challenges, and will draw in national and international partners to provide community coherence, and to build a legacy in knowledge and capability that will transcend the timescale of the programme itself.

It brings together science teams from six UK research institutions to investigate the role that the Southern Ocean plays in our changing climate and atmospheric carbon draw-down. It is led by British Antarctic Survey, in partnership with National Oceanography Centre, British Geological Survey, Plymouth Marine Laboratory, the Centre for Polar Observation and Modelling and the Sea Mammal Research Unit.

The oceans around Antarctica play a critical a key role in drawing down and storing large amounts of carbon and vast quantities of heat from from the atmosphere. Due to its remoteness and harsh environment, the Southern Ocean is the world's biggest data desert, and one of the hardest places to get right in climate models. The ORCHESTRA programme will make unique and important new measurements in the Southern Ocean using a range of techniques, including use of the world-class UK research vessel fleet, and deployments of innovative underwater robots. The new understanding obtained will guide key improvements to the current generation of computer models, and will enhance greatly our ability to predict climate into the future.

The scope of the programme includes interaction of the Southern Ocean with the atmosphere, exchange between the upper ocean mixed layer and the interior and exchange between the Southern Ocean and the global ocean.

Further details are available on the ORCHESTRA page.

Participants

Six different organisations are directly involved in research for ORCHESTRA. These institutions are:

  • British Antarctic Survey (BAS)
  • National Oceanography Centre (NOC)
  • Plymouth Marine Laboratory (PML)
  • British Geological Survey (BGS)
  • Centre for Polar Observation and Modelling (CPOM)
  • Sea Mammal Research Unit (SMRU)

GO-SHIP are a third party organisation that, although not directly involved with the programme, will conduct ship based observations that will also be used by ORCHESTRA.

Research details

Three Work Packages have been funded by the ORCHESTRA programme. These are described in brief below:

  • Work Package 1: Interaction of the Southern ocean with the atmosphere
    WP1 will use new observations of surface fluxes and their controlling parameters in order to better constrain the exchanges of heat and carbon loss across the surface of the Southern Ocean.

  • Work Package 2: Exchange between the upper ocean mixed layer and the interior.
    This work package will combine observationally-derived data and model simulations to determine and understand the exchanges between the ocean mixed layer and its interior.

  • Work Package 3: Exchange between the Southern Ocean and the global ocean .
    This WP will use budget analyses of the hydrographic/tracer sections to diagnose the three-dimensional velocity field of the waters entering, leaving and recirculating within the Southern Atlantic sector of the Southern ocean.

  • Fieldwork and data collection

    The campaign consists of 12 core cruises on board the NERC research vessels RRS James Clark Ross and RRS James Cook and will include hydrographic/tracer sections conducted across Drake Passage (SR1b), the northern Weddell Sea/Scotia Sea (A23), the northern rim of the Weddell Gyre (ANDREXII) and across the South Atlantic (24S). Section I6S will be performed by GO-SHIP Project Partners. Measurements will include temperature, salinity, dissolved oxygen, velocity, dissolved inorganic carbon, total alkalinity, inorganic nutrients, oxygen and carbon isotopes, and underway meteorological and surface ocean observations including pCO2.

    Tags will be deployed on 30 Weddel seals and these will provide temperature and salinity profiles that can be used alongside the Argo data.

    Autonomous underwater ocean gliders will conduct multi-month missions and will deliver data on ocean stratification, heat content, mixed layer depth and turbulent mixing over the upper 1 km, with previously-unobtainable temporal resolution. These gliders will be deployed in the Weddell Gyre and the ACC.

    Field campaigns with the MASIN meteorological aircrafts will be conducted flying out of Rothera and Halley research stations and the Falkland Islands. These campaigns will deliver information on key variables relating to air-sea fluxes (surface and air temperature, wind, humidity, atmospheric CO2, radiation, turbulent fluxes of heat, momentum and CO2), in different sea ice conditions and oceanic regimes.

    Eart Observation datasets will be used to inform the programme on the properties of the ocean, sea ice and atmosphere and on interactions between them.

    A cluster of 6 deep ocean moorings in the Orkney Passage will collect year round series of AABW temperatre and transport. This work connects to the NERC funded project Dynamics of the Orkney Passage Outflow (DYNOPO).

    The UK Earth System model (UKESM) and underlying physical model will be used to conduct analyses of heat and carbon uptake and transport by the Southern Ocean and their links to wider climate on decadal timescales.

    An eddy-resolving (1/12°) sector model of the ocean south of 30°S with 75 vertical levels, will be built using the NEMO model coupled to the Los Alamos sea ice (CICE) model. The improvements on the ocean boundary layer will be based from the results from the NERC-funded OSMOSIS project and the inclusion of tides.

    20-5 year runs of an adjoint model will be conducted to determine how key forcings and model states affect the uptake and subduction of heat and carbon by the ocean.


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 2017-04-20
End Date (yyyy-mm-dd) 2019-01-30
Organization Undertaking ActivityBritish Antarctic Survey
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierOP6
Platform Categorysubsurface mooring

Orkney Passage Mooring 6 (OP6)

The mooring was deployed at the following positions:

Organisation Undertaking Activity British Antarctic Survey, Cambridge
Country of Organisation United Kingdom
Originator's Data Activity Identifier OP6
Platform Category Subsurface mooring
Latitude (+ve N) -60.55
Longitude (+ve E) -41.6333
Water Depth (m) 2310

The mooring was deployed on the Orkney Passage on cruise JR16005 on 20 April 2017 and recovery was done on cruise JR18004 on 30 January 2019.

The table below lists the instruments deployed on this mooring:

Instrument type Serial Number Data start (UT) Data end (UT) Instrument depth (m) Comments
SBE37 SM 8267 20 April 2017 14:40 30 January 2019 13:20 2292 -
Aquadopp 12053 20 April 2017 14:40 30 January 2019 13:20 2264 -
Aquadopp 12020 20 April 2017 14:40 30 January 2019 13:20 1910 -

Related Data Activity activities are detailed in Appendix 1

Cruise

Cruise Name JR16005
Departure Date 2017-03-17
Arrival Date 2017-05-08
Principal Scientist(s)Alberto C Naveira Garabato (University of Southampton School of Ocean and Earth Science), Povl Abrahamsen (British Antarctic Survey)
Ship RRS James Clark Ross

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameOrkney Passage OP6
CategoryOffshore location
Latitude60° 33.74' S
Longitude41° 37.93' W
Water depth below MSL2309.0 m

Orkney Passage OP6 site

Site OP6 is part of the Orkney Passage mooring array which is an activity covered by the Long Term Monitoring and Survey British Antarctic Survey's (BAS) programme. The data collection is the result of an ongoing collaboration between BAS and the Lamont-Doherty Earth Observatory (LDEO).

This site has been occupied since 2012, the recovery/deployment history, including position details, is presented below:

Deployed Recovered
Year Cruise Year Cruise Latitude (+veN) Longitude (+ve E) Water Depth (m)
2012 JR20120326 (JR254E, JR257, JR272A) 2013 JR20130317 (JR272B, JR273A, JR281, UKD-4) -60.5623 -41.6322 2309
2013 JR20130317 (JR272B, JR273A, JR281, UKD-4) 2015 JR20150309 (JR272D, JR310) -60.5629 -41.6327 2309
2015 JR20150309 (JR272D, JR310) 2017 JR16005 -60.5621 -41.6339 2338

Detailed information for each deployment can be accessed from the OP6 Data Activity document.

Related Fixed Station activities are detailed in Appendix 2


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: OP6

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 IdentifierData CategoryStart date/timeStart positionCruise
2022408Currents -subsurface Eulerian2017-04-20 14:40:0060.56277 S, 41.63182 WRRS James Clark Ross JR16005
2022421Currents -subsurface Eulerian2017-04-20 14:40:0060.56277 S, 41.63182 WRRS James Clark Ross JR16005

Appendix 2: Orkney Passage OP6

Related series for this Fixed Station 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 IdentifierData CategoryStart date/timeStart positionCruise
1362834Currents -subsurface Eulerian2012-04-02 20:15:0060.56315 S, 41.63217 WRRS James Clark Ross JR20120327 (JR254E, JR257, JR272A)
1362846Currents -subsurface Eulerian2012-04-02 20:15:0060.56315 S, 41.63217 WRRS James Clark Ross JR20120327 (JR254E, JR257, JR272A)
1223533Hydrography time series at depth2012-04-02 20:15:0060.56315 S, 41.63217 WRRS James Clark Ross JR20120327 (JR254E, JR257, JR272A)
1840948Currents -subsurface Eulerian2013-03-30 19:15:0060.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
1840371Hydrography time series at depth2013-03-30 19:15:0160.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
1840936Currents -subsurface Eulerian2013-03-30 19:15:1660.56278 S, 41.63393 WRRS James Clark Ross JR20130317 (JR252B, JR272B, JR273A, JR281, UKD-4)
1814106CTD or STD cast2015-03-21 06:42:0860.5711 S, 41.6281 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1805766Currents -subsurface Eulerian2015-03-21 06:42:3160.57106 S, 41.6281 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1814616CTD or STD cast2015-04-06 09:52:4760.5624 S, 41.633 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1806272Currents -subsurface Eulerian2015-04-06 09:53:0260.56171 S, 41.63373 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1894762Currents -subsurface Eulerian2015-04-06 13:40:0060.56212 S, 41.63388 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1894774Currents -subsurface Eulerian2015-04-06 13:40:0060.56212 S, 41.63388 WRRS James Clark Ross JR20150309 (JR272D, JR310)
1881272Hydrography time series at depth2015-04-06 13:40:0160.56212 S, 41.63388 WRRS James Clark Ross JR20150309 (JR272D, JR310)
2022408Currents -subsurface Eulerian2017-04-20 14:40:0060.56277 S, 41.63182 WRRS James Clark Ross JR16005
2022421Currents -subsurface Eulerian2017-04-20 14:40:0060.56277 S, 41.63182 WRRS James Clark Ross JR16005