Metadata Report for BODC Series Reference Number 686922
Metadata Summary
Problem Reports
Data Access Policy
Narrative Documents
Project Information
Data Activity or Cruise Information
Fixed Station Information
BODC Quality Flags
Metadata Summary
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Problem Reports
No Problem Report Found in the Database
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
InterOcean Spherical Solid State Sensor Current Meter S4 series
The S4 family are self-contained current measuring sensors enclosing all necessary solid state electronics for acquiring, processing and outputting data. Data retrieval is accomplished through a serial port without opening the instrument.
The spherical shape of the S4 is a contributing factor in the rejection of the vertical components of water movement and there are no protruding parts or sensor support structures to interfere with the water flow.
The S4 measures the magnitude and direction of the horizontal current motion of the water. Water flows through the electromagnetic field created by the instrument, thereby producing a voltage which is proportional to the magnitude of the water velocity past the sensor. This voltage is then sensed by two pairs of titanium electrodes located symmetrically on the equator of the spherical housing which forms the sensor.
Manufacturer's specifications: Meter (sphere, diameter 25cm) is designed for depths down to 1000m (S4 standard: glass-filled cycloaliphalic epoxy construction with grooved surface for hydrodynamic stability) or down to 6000m (S4D, deep: annealed borosilicate glass version with smooth surface). The meter is shackled directly into the mooring cable by means of an axial titanium load bearing shaft.
Meter comprises:-
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Electromagnetic, 2 axis current speed sensor, range 0 to 350cm/s (standard) 0 to 50 and 0 to 100cm/s (optional), resolution 0.2cm/s (standard) 0.03cm/s (0 to 50 range) 0.06cm/s (0 to 100 range), accuracy 2 per cent reading +/- 1cm/s. The sensor responds to the component of flow normal to its vertical axis.
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Flux-gate magnetometer compass for heading information used to reference the current direction to magnetic north, compass range 360°, resolution 0.5°, accuracy 2°, tilt +/- 25° for specified accuracy.
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Temperature stable quartz oscillator clock, accuracy 12 minutes/year.
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Optional automatic tilt compensation i.e. the allowable tilt of the meter from the vertical at which the vertical cosine response is fully corrected, angle range +/- 45°, resolution 0.6°, accuracy (speed correction) 1 per cent (angle output) 0.25°.
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Optional semiconductor (thermistor or platinum) temperature sensor, range -5 to +45 °C, resolution 0.05 °C, accuracy 0.2 °C, response time at 63 per cent 1 min (1.5 sec thermistor or 60msec platinum).
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Optional conductive conductivity sensor, range 5 to 70mS/cm, resolution 0.1mS/cm, accuracy 0.2mS/cm (optional inductive sensor, range 1 to 70mS/cm).
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Optional semiconductor strain gauge pressure sensor, range 0 to 1000dBar (70M option), resolution 1dBar (4mm with 70M option), accuracy 0.25 per cent fs.
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Recorder, CMOS static RAM microprocessor, 64KByte (128K or 256KByte optional) performs vector averaging, burst sampling and adaptive sampling.
Available versions of the S4 are listed in the table below:
| S4RT | Basic S4 current meter without memory installed, for real-time monitoring applications only. |
| S4 | The basic S4 current measuring instrument, with current speed and direction sensors and internal memory from 64K to 1 megabyte of solid-state memory. |
| S4DW | S4 current meter directional wave measuring instrument. Includes 1 megabyte of memory, 70 meter high-resolution depth, adaptive sampling, and Lithium battery pack, standard. |
| S4P | S4 instrument outfitted for profiling applications. Fitted with fast response Platinum temperature sensor, inductive flow- through conductivity sensor, and high-resolution depth sensor as standard. Memory size may be from 64K to 1 megabyte. |
| S4D | Deep water S4 instrument for use to depths of 6,000 meters. |
| S4A | Advanced current measuring instrument with large memory capacity, and dual-mode logging capability. Memory size may be 32-256 megabytes. Includes high speed binary down-loads using Zmodem protocol with 32 bit CRC error checking. Adaptive current sampling is standard on this instrument. |
| S4ADW | Large memory capacity S4 directional wave measuring instrument. Includes 32 to 256 megabyte memory, 70 meter high-resolution depth sensor, and Lithium battery pack, standard. |
| S4ADW-i | New generation of S4ADW directional wave measuring instrument providing internally-processed directional wave data for direct output from the instrument without the need for external analysis software. Ideal multi-purpose oceanographic instrument for integrated-system applications requiring pre-processed output directly into a datalogger, PLC, modem, or other external device without need for PC computer. Used for directional wave, current, and tide measurements, with additional parameters available. Includes long-life lithium battery, and internal memory sizes from 32MB to 256MB. |
| S4AP | An S4A instrument outfitted for profiling applications. Fitted with fast response Platinum temperature sensor, inductive flow-through conductivity sensor, and high- resolution depth sensor, standard. Memory size may be 32-256 megabytes. |
| S4AD | Deep water S4A instrument for use to depths of 6,000 meters. Has all the same features and options as available with the standard S4A. |
| S4AH | Same as S4A but uses 5 Hz sampling rate instead of 2 Hz. S4AHDW, S4AHP, S4AHD are 5 Hz models of the units listed above. |
Further details are available from the manufacturer's specification sheet.
RAPIDMOC/MOCHA Current Meter data processing document
This document outlines the procedures undertaken to process and quality assure current meter data collected under the RAPIDMOC and MOCHA projects.
Originator's processing
The raw data are downloaded from the instrument and converted to ASCII format.
Once in ASCII format the data are corrected for the following -
- Speed bias (caused by the mooring motion)
- Sound speed (as electromagnetic current meter sensors use the speed of sound in water to calculate the doppler shift in the returned signal, they are corrected for variations in sound speed using temperature data as sound speed varies with temperature).
- Magnetic variation
A 40 hour low pass filter is also applied to the data.
Calculating and applying calibrations
Manufacturers calibrations are applied.
Quality Control
Data were visually inspected for out-lying data and instrument electrical spikes removed.
BODC processing
Data are received after quality checks have been made and calibrations have been applied. The data files are submitted in ASCII format as one file per instrument.
Once the submitted data files are safely archived, the data undergo reformatting and banking procedures:
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The data files are transferred into a common format, a NetCDF subset.
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Standard parameter codes are assigned that accurately describe the data (see Parameter mapping section below).
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Unit conversions are applied, if necessary, so that units are standardised (see Parameter mapping section below).
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The data are screened visually and any spikes or instrument malfunctions can be clearly labelled with quality control flags.
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Comprehensive documentation is prepared describing the collection, processing and quality of each data series.
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Detailed metadata and documents are loaded to the database and linked to each series so that the information is readily available to future users.
Parameter mapping
The following describes the parameters contained in the originator's files and their mapping to BODC parameter codes:
| Identifier | Unit | Definition | BODC parameter code | Units | Unit conversion | Comments |
|---|---|---|---|---|---|---|
| YY | year | Year | AADYAA01 | days | - | Combined with MM and DD to form a date and transferred |
| MM | month | Month | AADYAA01 | days | - | Combined with MM and DD to form a date and transferred |
| DD | day | Day | AADYAA01 | days | - | Combined with MM and DD to form a date and transferred |
| HH | hour | Decimal hours | AAFDZZ01 | days | /24 | Transferred |
| T | °C | Temperature | TEMPPR01 | °C | - | Transferred |
| P | dbar | Pressure | PRSTPR01 | dbar | - | Transferred |
| U | cm/s | Eastward velocity | LCEWEL01 | cm/s | - | Transferred |
| V | cm/s | Northward velocity | LCNSEL01 | cm/s | - | Transferred |
Project Information
Rapid Climate Change (RAPID) Programme
Rapid Climate Change (RAPID) is a £20 million, six-year (2001-2007) programme of the Natural Environment Research Council (NERC). The programme aims to improve our ability to quantify the probability and magnitude of future rapid change in climate, with a main (but not exclusive) focus on the role of the Atlantic Ocean's Thermohaline Circulation.
Scientific Objectives
- To establish a pre-operational prototype system to continuously observe the strength and structure of the Atlantic Meridional Overturning Circulation (MOC).
- To support long-term direct observations of water, heat, salt, and ice transports at critical locations in the northern North Atlantic, to quantify the atmospheric and other (e.g. river run-off, ice sheet discharge) forcing of these transports, and to perform process studies of ocean mixing at northern high latitudes.
- To construct well-calibrated and time-resolved palaeo data records of past climate change, including error estimates, with a particular emphasis on the quantification of the timing and magnitude of rapid change at annual to centennial time-scales.
- To develop and use high-resolution physical models to synthesise observational data.
- To apply a hierarchy of modelling approaches to understand the processes that connect changes in ocean convection and its atmospheric forcing to the large-scale transports relevant to the modulation of climate.
- To understand, using model experimentation and data (palaeo and present day), the atmosphere's response to large changes in Atlantic northward heat transport, in particular changes in storm tracks, storm frequency, storm strengths, and energy and moisture transports.
- To use both instrumental and palaeo data for the quantitative testing of models' abilities to reproduce climate variability and rapid changes on annual to centennial time-scales. To explore the extent to which these data can provide direct information about the thermohaline circulation (THC) and other possible rapid changes in the climate system and their impact.
- To quantify the probability and magnitude of potential future rapid climate change, and the uncertainties in these estimates.
Projects
Overall 38 projects have been funded by the RAPID programme. These include 4 which focus on Monitoring the Meridional Overturning Circulation (MOC), and 5 international projects jointly funded by the Netherlands Organisation for Scientific Research, the Research Council of Norway and NERC.
The RAPID effort to design a system to continuously monitor the strength and structure of the North Atlantic Meridional Overturning Circulation is being matched by comparative funding from the US National Science Foundation (NSF) for collaborative projects reviewed jointly with the NERC proposals. Three projects were funded by NSF.
A proportion of RAPID funding as been made available for Small and Medium Sized Enterprises (SMEs) as part of NERC's Small Business Research Initiative (SBRI). The SBRI aims to stimulate innovation in the economy by encouraging more high-tech small firms to start up or to develop new research capacities. As a result 4 projects have been funded.
Monitoring the Meridional Overturning Circulation at 26.5N (RAPIDMOC)
Scientific Rationale
There is a northward transport of heat throughout the Atlantic, reaching a maximum of 1.3PW (25% of the global heat flux) around 24.5°N. The heat transport is a balance of the northward flux of a warm Gulf Stream, and a southward flux of cooler thermocline and cold North Atlantic Deep Water that is known as the meridional overturning circulation (MOC). As a consequence of the MOC northwest Europe enjoys a mild climate for its latitude: however abrupt rearrangement of the Atlantic Circulation has been shown in climate models and in palaeoclimate records to be responsible for a cooling of European climate of between 5-10°C. A principal objective of the RAPID programme is the development of a pre-operational prototype system that will continuously observe the strength and structure of the MOC. An initiative has been formed to fulfill this objective and consists of three interlinked projects:
- A mooring array spanning the Atlantic at 26.5°N to measure the southward branch of the MOC (Hirschi et al., 2003 and Baehr et al., 2004).
- Additional moorings deployed in the western boundary along 26.5°N (by Prof. Bill Johns, University of Miami) to resolve transport in the Deep Western Boundary Current (Bryden et al., 2005). These moorings allow surface-to-bottom density profiles along the western boundary, Mid-Atlantic Ridge, and eastern boundary to be observed. As a result, the transatlantic pressure gradient can be continuously measured.
- Monitoring of the northward branch of the MOC using submarine telephone cables in the Florida Straits (Baringer et al., 2001) led by Dr Molly Baringer (NOAA/AOML/PHOD).
The entire monitoring array system created by the three projects will be recovered and redeployed annually until 2008 under RAPID funding. From 2008 until 2014 the array will continue to be serviced annually under RAPID-WATCH funding.
The array will be focussed on three regions, the Eastern Boundary (EB), the Mid Atlantic Ridge (MAR) and the Western Boundary (WB). The geographical extent of these regions are as follows:
- Eastern Boundary (EB) array defined as a box with the south-east corner at 23.5°N, 25.5°W and the north-west corner at 29.0°N, 12.0°W
- Mid Atlantic Ridge (MAR) array defined as a box with the south-east corner at 23.0°N, 52.1°W and the north-west corner at 26.5°N, 40.0°W
- Western Boundary (WB) array defined as a box with the south-east corner at 26.0°N, 77.5°W and the north-west corner at 27.5°N, 69.5°W
References
Baehr, J., Hirschi, J., Beismann, J.O. and Marotzke, J. (2004) Monitoring the meridional overturning circulation in the North Atlantic: A model-based array design study. Journal of Marine Research, Volume 62, No 3, pp 283-312.
Baringer, M.O'N. and Larsen, J.C. (2001) Sixteen years of Florida Current transport at 27N Geophysical Research Letters, Volume 28, No 16, pp3179-3182
Bryden, H.L., Johns, W.E. and Saunders, P.M. (2005) Deep Western Boundary Current East of Abaco: Mean structure and transport. Journal of Marine Research, Volume 63, No 1, pp 35-57.
Hirschi, J., Baehr, J., Marotzke J., Stark J., Cunningham S.A. and Beismann J.O. (2003) A monitoring design for the Atlantic meridional overturning circulation. Geophysical Research Letters, Volume 30, No 7, article number 1413 (DOI 10.1029/2002GL016776)
Data Activity or Cruise Information
Data Activity
| Start Date (yyyy-mm-dd) | 2004-03-26 |
| End Date (yyyy-mm-dd) | 2005-05-11 |
| Organization Undertaking Activity | Southampton Oceanography Centre (now National Oceanography Centre, Southampton) |
| Country of Organization | United Kingdom |
| Originator's Data Activity Identifier | WB2#1 |
| Platform Category | subsurface mooring |
RAPID Moored Instrument Rig WB2#1
This rig was deployed as part of the Western Boundary (WB) array of the RAPIDMOC project.
| Deployment cruise | RRS Discovery cruise D278 |
|---|---|
| Recovery cruise | RV Knorr cruise KN182_2 |
The rig was anchored by railway wheels and mooring chain and kept erect by a large sub-surface float supplemented by groups of smaller buoyancy all attached on titanium swivels.
Instruments deployed on the rig
| Depth | Instrument |
|---|---|
| 98m | Sea-Bird SBE37 IMP MicroCAT (#3239) |
| 155m | Sea-Bird SBE37 SMP MicroCAT (#3219) |
| 156m | SonTek Argonaut MD current meter (#D301) |
| 303m | Sea-Bird SBE37 IMP MicroCAT (#3240) |
| 438m | SonTek Argonaut MD current meter (#D274) |
| 447m | Sea-Bird SBE37 SMP MicroCAT (#3206) |
| 654m | Sea-Bird SBE37 IMP MicroCAT (#3241) |
| 852m | Sea-Bird SBE37 SMP MicroCAT (#3220) |
| 857m | SonTek Argonaut MD current meter (#D303) |
| 1055m | Sea-Bird SBE37 IMP MicroCAT (#3242) |
| 1235m | InterOcean S4AD current meter (#35612572) |
| 1254m | Sea-Bird SBE37 SMP MicroCAT (#3221) |
| 1261m | SonTek Argonaut MD current meter (#D272) |
| 1647m | Sea-Bird SBE37 IMP MicroCAT (#3281) |
| 2048m | Sea-Bird SBE37 SMP MicroCAT (#3222) |
| 2051m | SonTek Argonaut MD current meter (#D273) |
| 2545m | Sea-Bird SBE37 IMP MicroCAT (#3282) |
| 3048m | SonTek Argonaut MD current meter (#D298) |
| 3050m | Sea-Bird SBE37 SMP MicroCAT (#3223) |
| 3543m | Sea-Bird SBE37 IMP MicroCAT (#3283) |
| 3740m | Sea-Bird SBE37 IMP MicroCAT (#3284) |
| 3877m | InterOcean S4AD current meter (#35612573) |
| 3911m | Sea-Bird SBE26 SEAGAUGE Wave and Tide Recorder (#0398) |
Due to being incorrectly setup on deployment the memory cards in the InterOcean S4AD instruments became full before the end of the deployment.
- Instrument 35612573 dataset ended on 22/10/04 and was found to have a faulty pressure sensor which did not affect the deployment data, but was found when deployed an a CTD calibration dip.
- Instrument 35612572 dataset ended on 23/10/04 and was found to have a cracked pressure case. The deployment data were not affected.
Other instruments with series truncations are SonTek Argonaut #D272, #D273, #D298, #D301 and #D303.
Other Series linked to this Data Activity - 686866 686909 703804 703816 703693 703724 703748 703785 686891 703761 703797 686878 686934 703712 703773 703828 703700 686910 687022 703681 703736 732821
Fixed Station Information
Fixed Station Information
| Station Name | Western Boundary Array |
| Category | Offshore area |
| Latitude | 26° 37.50' N |
| Longitude | 73° 37.50' W |
| Water depth below MSL |
RAPIDMOC/MOCHA Western Boundary (WB) Array
The Western Boundary Array defines a box in which moorings were deployed at the western side of the North Atlantic as part of the RAPIDMOC project and the collaborative project Meridional Overturning Circulation and Heatflux Array (MOCHA). The box region has latitudinal limits of 26° N to 27.5° N and longitudinal limits of 69.5° W to 77.5° W. Moorings have occupied this region since 2004 and are typically deployed for 6 to 18 months.
Moored data summary
| Year | Cruise ID | Number of moorings | Data types (number of instruments) |
|---|---|---|---|
| 2004 | D278 | 9 (6 RAPIDMOC, 3 MOCHA) | ADCP (2), BPR (8), CM (29), MCTD (52), MMP (1) |
| 2005 | KN182_2 | 11 (6 RAPIDMOC, 5 MOCHA) | ADCP (2), BPR (6), CM (27), MCTD (56) |
| 2006 | RB06-02, SJ14-06 | 11 (6 RAPIDMOC, 5 MOCHA) | ADCP (1), BPR (3), CM (22), IES (7), MCTD (60) |
| 2007 | RB07-01 | 7 (7 RAPIDMOC) | ADCP (1), BPR (4), CM (16), MCTD (47) |
| 2008 | SJ08-03 | 11 (8 RAPIDMOC, 3 MOCHA) | ADCP (2), BPR (3), CM (40), MCTD (80) |
| 2009 | RB0901, D344, D345 | 16 (11 RAPIDMOC, 5 MOCHA) | ADCP (2), BPR (5), CM (39), MCTD (91), DVS (1) |
| 2010 | OC459-1, RB1009 | 9 (8 RAPIDMOC, 1 MOCHA) | ADCP (1), BPR (7), CM (23), MCTD (54) |
| 2011 | KN200-4 | 7 (7 RAPIDMOC, 6 MOCHA) | ADCP (2), BPR (7), CM (43), MCTD (86), DVS (1), IES (1) |
| 2012 | RB1201, EN517, D382 | 24 (19 RAPIDMOC, 5 MOCHA) | ADCP (3), BPR (19), CM (74), MCTD (130), IES(1) |
Cruise data summary
During the cruises to service the moored array, a variety of data types are collected. The table below is a summary of these data. The number of CTD profiles performed on these cruises within the box region defined above is also included. Trans-Atlantic hydrographic CTD sections have also been performed since 2004 and are included in the table.
| Cruise ID | Cruise description | Data types | Number of CTD profiles performed within the box region |
|---|---|---|---|
| D277 | Initial array deployment | DIS, MET, NAV, SADCP, SURF | 1 |
| D278 | Initial array deployment | DIS, MET, NAV, SADCP, SURF | 16 |
| D279 | Hydrographic section | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 31 |
| KN182_2 | Array service | CTD, DIS, MET, NAV, SADCP, SURF | 64 |
| RB0601 | Array service | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 39 |
| SJ14-06 | Array service | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 33 |
| RB07-01 | Array service | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 36 |
| SJ08-03 | Array service | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 33 |
| RB0901 | Array service | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 35 |
| D344 | Array service | CTD, DIS, MET, NAV, SADCP, SURF | 3 |
| D345 | Array service | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 24 |
| OC459-1 | Array service | CTD, DIS, MET, NAV, SADCP, SURF | 9 |
| OC459-2 | Western Boundary Hydrographic section | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 27 |
| D346 | Hydrographic section | CTD, DIS, LADCP, MET, NAV, SADCP, SURF | 31 |
| RB1009 | WB4 service | CTD, MET, SURF, NAV | 2 |
| KN200-4 | Array service | CTD, DIS, MET, NAV, SURF | 34 |
| RB1201 | Array service | CTD, DIS, MET, NAV, SURF | 10 |
| EN517 | Array service | CTD, DIS, LADCP, MET, NAV, SURF | 31 |
| D382 | Array service | CTD, DIS, MET, NAV, SURF | 8 |
Data type ID and description
| Data type ID | Description |
|---|---|
| ADCP | Acoustic Doppler Current Profiler |
| BATH | Bathymetry |
| BPR | Bottom Pressure Recorder |
| CM | Current Meter |
| CTD | Conductivity-Temperature-Depth profiler |
| DIS | Discrete water bottle samples |
| DVS | Doppler Volume sampler |
| IES | Inverted Echo Sounder |
| LADCP | Lowered Acoustic Doppler Current Profiler |
| MET | Meteorology |
| MCTD | Moored Conductivity-Temperature-Depth sensor |
| MMP | McLane Moored Profiler - profiling CTD and current meter |
| NAV | Navigation |
| SADCP | Shipborne Acoustic Doppler Current Profiler |
| SURF | Sea surface data |
Other Series linked to this Fixed Station - 686670 686682 686694 686701 686713 686725 686737 686749 686750 686762 686774 686786 686798 686805 686817 686829 686830 686842 686854 686866 686878 686891 686909 686910 686934 686946 686958 687022 696560 696572 701951 701963 701975 701987 701999 702002 702014 702026 702038 702051 702063 702075 702087 702099 702106 702118 702131 702143 702155 702167 702179 702180 702192 702211 702223 702235 702247 703681 703693 703700 703712 703724 703736 703748 703761 703773 703785 703797 703804 703816 703828 703841 703853 703865 703877 703889 703890 703908 703921 703933 703945 703957 709744 709756 732808 732821 732833 732845 732857 734747 738828 738841 738853 738865 738877 738889 738890 738908 738921 738933 738945 738957 738969 738970 738982 738994 739008 739021 739033 739045 739057 739069 739070 739082 739094 739101 739113 739125 739137 739149 774528 774541 774553 774565 774577 774589 774590 774608 774621 774633 774645 774657 774669 774670 774682 774694 774701 774713 774725 774737 774749 774798 774805 774817 774829 774830 774842 774854 774866 774878 774891 774909 774910 774922 774934 774946 774958 774971 774983 774995 775009 775010 775022 775034 775046 775058 775071 775083 775095 775231 775243 775255 775267 775279 775280 775292 775311 775323 775335 775347 775359 775360 775372 775384 775396 775403 775415 775427 775439 775440 775452 775464 775476 775488 775507 775519 775520 775532 775544 775556 775568 775581 775593 775600 775612 775624 775636 775648 775661 775673 775685 775697 775704 775716 775728 775741 775753 775765 775777 775789 775790 775808 775821 775833 775845 775857 775869 775870 812882 812894 812901 812913 812925 812937 812949 812950 812962 812974 812986 812998 813001 813013 813025 813037 813049 813050 813062 813074 813086 813098 813105 813117 813129 813130 813142 813154 813166 813178 831124 831136 831148 831161 831173 831185 831197 831204 831216 831228 831241 831253 831265 831277 831289 831290 831308 831321 831333 831345 831357 831369 831370 831382 831394 831401 831413 831425 831437 831449 831450 835198 835205 835217 835229 835230 835242 835254 835266 835278 838412 895349 895350 895362 895374 895386 895398 895405 895417 895429 895430 895442 895454 895466 895478 895491 895509 895510 895522 895534 895546 895558 895571 895583 895595 895602 895614 946081 946093 946100 946204 946216 946228 946241 946253 946265 946277 946289 946290 972954 972966 972978 972991 973005 973017 973029 973030 973042 973054 973066 973078 973091 973109 973110 973122 973134 973146 973158 973171 973183 973195 973202 973214 973226 973238 973251 973263 973275 973287 973299 973306 973318 973331 973343 973355 973367 973379 973380 973392 973411 973423 973435 973447 973459 973460 973472 973484 973496 973503 973515 973527 973539 973540 973552 973564 973576 973588 973607 973619 973620 973632 973644 973656 973668 973681 973693 973700 973712 973724 973736 973748 973761 973773 973785 973797 973804 973816 973828 973841 973853 973865 973877 973889 973890 1012754 1012766 1012778 1015623 1015635 1015647 1015659 1015660 1015672 1015684 1015696 1015703 1015715 1015727 1015739 1015740 1015752 1015764 1015776 1015788 1015807 1015819 1015820 1015832 1015844 1015856 1015868 1015881 1015893 1015900 1015912 1015924 1015936 1015948 1015961 1015973 1015985 1015997 1016000 1016012 1016024 1016036 1016048 1016061 1016073 1016085 1016097 1016104 1016116 1016128 1016988 1017003 1017015 1017027 1017039 1017040 1017052 1017064 1017076 1017088 1017107 1017119 1017120 1017132 1017144 1017156 1017168 1017181 1017193 1017200 1017212 1017224 1017236 1017248 1017261 1017273 1017285 1017297 1017304 1017316 1017328 1082579 1082580 1082592 1082611 1082623 1082635 1082647 1082659 1082660 1082672 1082684 1082696 1082703 1082715 1082727 1082739 1082740 1082752 1082764 1082776 1082788 1082807 1082819 1082820 1082832 1082844 1082856 1082868 1082881 1082893 1082900 1082912 1082924 1082936 1082948 1082961 1082973 1082985 1082997 1083000 1083012 1083024 1083036 1083048 1083061 1083073 1083085 1083097 1083104 1083116 1083128 1083141 1083417 1083429 1083430 1083442 1083454 1083466 1083478 1083491 1083509 1083510 1083522 1083534 1083546 1083558 1083571 1083583 1083595 1083602 1083614 1083626 1083638 1083651 1083663 1083675 1083687 1083699 1083706 1083718 1083731 1083743 1083755 1091823 1091835 1091847 1091859 1091860 1091872 1091884 1091896 1091903 1091915 1091927 1091939 1091940 1091952 1091964 1091976 1091988 1092003 1092015 1092027 1092039 1092040 1092052 1092064 1092076 1092088 1092107 1092119 1092120 1092132 1092144 1092156 1092168 1092181 1092193 1092200 1092212 1092224 1092236 1092248 1092261 1092273 1092285 1092297 1092304 1092316 1092328 1092341 1092353 1093123 1093135 1093147 1093159 1093160 1097136 1097148 1097161 1097173 1097185 1097197 1097204 1097216 1097228 1097241 1097253 1097265 1097277 1097289 1097290 1097308 1097321 1097333 1097345 1097357 1097369 1097370 1097382 1097394 1097401 1097413 1097425 1097437 1097449 1097450 1097462 1097474 1097486 1097498 1097505 1097517 1097529 1097530 1097542 1097554 1097566 1097578 1097591 1097609 1134806 1134818 1134831 1134843 1134855 1134867 1134879 1134880 1134892 1134911 1134923 1134935 1134947 1134959 1134960 1134972 1134984 1134996 1135011 1135023 1135035 1135047 1135059 1135060 1135072 1135084 1135096 1135103 1135115 1135127 1135139 1135140 1135152 1135164 1135176 1135188 1135207 1135219 1135220 1135232 1135244 1135256 1135268 1135281 1135293 1135300 1135312 1135324 1135336 1135348 1135361 1135373 1135385 1135397 1135404 1135416 1135428 1135441 1135453 1135465 1135477 1135489 1135490 1135508 1135521 1135533 1135545 1135557 1135569 1135570 1135582 1135594 1135601 1135613 1135625 1135637 1135649 1135650 1135662 1135674 1135686 1135698 1135705 1135717 1135729 1135730 1135742 1135754 1135766 1135778 1135791 1135809 1135810 1135822 1135834 1135846 1135858 1135871 1135883 1135895 1135902 1135914 1135926 1135938 1135951 1135963 1135975 1135987 1135999 1136002 1136014 1136026 1136038 1136051 1136063 1136075 1136087 1136099 1136106 1136118 1136131 1136143 1136155 1136167 1136179 1136180 1136192 1136211 1136223 1136235 1136247 1136259 1136260 1136272 1136284 1136296 1136303 1136315 1136327 1136339 1136340
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 |
