Metadata Report for BODC Series Reference Number 1623236


Metadata Summary

Data Description

Data Category Currents -subsurface Eulerian
Instrument Type
NameCategories
Teledyne RDI Workhorse Sentinel-600 ADCP  current profilers
Instrument Mounting subsurface mooring
Originating Country United Kingdom
Originator Dr Matt Palmer
Originating Organization Proudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Processing Status banked
Project(s) Oceans 2025 Theme 10 SO11
 

Data Identifiers

Originator's Identifier BB2391.01010
BODC Series Reference 1623236
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2007-07-26 12:00
End Time (yyyy-mm-dd hh:mm) 2007-08-29 11:19
Nominal Cycle Interval 600.0 seconds
 

Spatial Co-ordinates

Latitude 53.53517 N ( 53° 32.1' N )
Longitude 3.35683 W ( 3° 21.4' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor Depth 0.0 m
Maximum Sensor Depth 19.7 m
Minimum Sensor Height 2.7 m
Maximum Sensor Height 22.4 m
Sea Floor Depth 22.4 m
Sensor Distribution Sensor fixed, measurements made at fixed depths - The sensor is at a fixed depth, but measurements are made remotely from the sensor over a range of depths (e.g. ADCP measurements)
Sensor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODE Rank Units Short Title Title
HBINAA01 0 Metres BinHeight Height above bed (ADCP bin) in the water body
AADYAA01 1 Days Date(Loch_Day) Date (time from 00:00 01/01/1760 to 00:00 UT on day)
AAFDZZ01 1 Days Time(Day_Fract) Time (time between 00:00 UT and timestamp)
ASLVMWHA 1 Metres SL_MWH_ADCP Surface elevation (Mean Water Height) of the water body by acoustic doppler current profiler (ADCP)
LCEWAP01 2 Centimetres per second CurrVelE_ADCP Eastward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP)
LCNSAP01 2 Centimetres per second CurrVelN_ADCP Northward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP)
LERRAP01 2 Centimetres per second ADCPER Current velocity error in the water body by moored acoustic doppler current profiler (ADCP)
LRZAAP01 2 Centimetres per second ADCPVC Upward current velocity in the water body by moored acoustic doppler current profiler (ADCP)
 

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

Originator's quality control comments for PD16_07 COBS moorings

Data supplied to BODC were accompanied by data quality notes from the Originator that detailed observations made when the data were processed and subsequent processing decisions. A summary of these notes have been provided in the tables below.

Rig#1009

Instrument Serial number Instrument depth Data quality comments
Sea-Bird MicroCAT 02991 5 m Comparisons performed against CTD data found a good match between CTD temperature and temperature recorded by this instrument at mooring deployment (CTD cast performed approximately 500 m from mooring), but an offset of -0.2171°C at mooring recovery (CTD cast performed over one kilometre from mooring). No adjustments were made to these data. A large conductivity offset of -0.01333 S m-1 was found during the CTD comparison checks, however no offset correction was applied due to the instrument separation between the CTD and the mooring. The Data Originator recommends that these data are used with caution.
Star-Oddi minilogger 02192 7.5 m CTD comparison checks revealed a large temperature offset of -0.1480°C at mooring recovery, however as the CTD cast was performed over one kilometre from the mooring, no adjustments have been made to the data. Temperature values have been adjusted by -0.04 after comparing the data from this instrument against data recorded by the MicroCATs and Sea-bird 16+ present at this site. The Originator recommends that these data are used with caution.
Sea-Bird MicroCAT 02506 10 m Comparison checks performed against CTD data found a good match between CTD data and data from this instrument at mooring deployment, however temperature from this instrument was offset against CTD data by -0.0747°C at mooring recovery. These comparison checks found a conductivity offset of -0.0054 S m-1 at mooring deployment, however there was a good match with CTD conductivity at recovery. The Originator recommends that these data are used with caution.

Rig#1010


Instrument Serial number Instrument depth Data quality comments
Sea-Bird 16+ SEACAT fitted with Seapoint Turbidity Meter #10320 04738 Located on seabed Comparison checks performed against CTD data found large offsets in both temperature and conductivity at deployment (CTD performed approximately 500 m from mooring) and recovery (nearest CTD performed over one kilometre from mooring). The size of these offsets was -0.3513°C in temperature and +0.0211 S m-1 in conductivity at deployment, and -0.0869°C in temperature and -0.0116 S m-1 in conductivity at mooring recovery. No adjustments were made to either channel, due to the separation distance between the CTD and the mooring at deployment and recovery. The Originator recommends that these data are used with caution.
Teledyne RDI 600 kHz ADCP 2391 Located on seabed To correct for the magnetic declination (difference between magnetic north and true north) latitude values were changed by -3.6615°. All latitude values were modified by -2.7347° to correct for the compass error.

Rig#1011

Instrument Serial number Instrument depth Data quality comments
Sea-Bird MicroCAT 04966 5 m The temperature data recorded by this instrument are of good quality. CTD comparison checks found a mean conductivity offset of -0.0047 S m-1 at deployment, however a there was a good match between CTD conductivity and the conductivity recorded by this instrument at mooring recovery. The distance between the CTD and the mooring was approximately 850 m at deployment and 600 m at recovery. No adjustments have been made to the conductivity channel.
Star-Oddi minilogger 06023 7.5 m The original data from this series was recorded in low resolution (to one decimal place). Comparisons performed against CTD data found an offset of +0.0280°C in the temperature channel. An offset correction of -0.0280°C has been applied to this channel. All temperature values have been adjusted by -0.04°C after these data were compared to the MicroCATs and Sea-Bird 16+ also present at this site.
Sea-Bird MicroCAT 02010 10 m The temperature data recorded by this instrument are of good quality. CTD comparison checks revealed an offset in the conductivity, however the offset sometimes had positive values and sometimes had negative values, so no offset correction was attempted by the Originator.

Rig#1012


Instrument Serial number Instrument depth Data quality comments
Sea-Bird 16+ SEACAT fitted with Seapoint Turbidity Meter 04596 Located on seabed The Originator recommends that the data from this instrument are not used.
Teledyne RDI 600 kHz ADCP 3644 Located on seabed To correct for the magnetic declination (difference between magnetic north and true north) latitude values were changed by -3.7648°. All latitude values were modified by +1.4133° to correct for the compass error.

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

Teledyne RDI Workhorse Sentinel 600 kHz Acoustic Doppler Current Profiler (ADCP)

The Workhorse Sentinel is a self-contained ADCP that can be used either on a mooring or mounted in the hull of a moving vessel. Its 4-beam design provides a redundant data source (in case of a blocked or damaged beam), an independent data quality measure (error velocity) and reduces the variance in data, thereby improving data reliability, quality and accuracy.

Real-time data can be transmitted to shore via a cable link or acoustic modem or they can be stored internally. Sensors for bottom tracking, pressure and directional wave measurements can be added to the instrument and a special casing is available for deeper applications.

Specifications

Typical range 50 m
Number of depth cells 1 to 128
Typical ping rate 2 Hz
Standard depth rating 200 to 6000 m
Beam angle 20 °
Echo intensity profile
Dynamic range 80 dB
Precision ± 1.5 dB
Velocity
Accuracy 0.3% of the water velocity relative to the ADCP ± 0.3 cm s -1
Resolution 0.1 cm s -1
Range

± 5 m s -1 (default)

± 20 m s -1 (maximum)

Vertical resolution Range / Std Dev
for 0.5 m 39 m / 12.9 cm s -1
for 1 m 43 m / 6.1 cm s -1
for 2 m 47 m / 3.0 cm s -1
for 4 m 52 m / 2.0 cm s -1
Long Range mode
Range 70 m
Depth cell size 4 m
Std Deviation 4.2 cm s -1
Temperature
Operating temp. -5 to 45 °C
Precision ± 0.4 °C
Resolution 0.01 °C
Tilt
Range ± 15 °
Accuracy ± 0.5 °
Precision ± 0.5 °
Resolution 0.01 °
Compass
Accuracy ± 2 °
Resolution 0.01 °
Maximum tilt ± 15 °
Precision ± 0.5 °

Further details can be found in the manufacturer's specification sheet .

BODC Processing document for Coastal Observatory moored ADCP data

The data arrived at BODC as 117 ASCII format .dat files representing moored ADCP data recorded at the Coastal Observatory sites 1(9), 20 and 21 between 07 August 2002 and 20 September 2011. Following standard BODC procedure the files were reformatted into BODC standard internal format using an internal transfer function. This included removing surface null bins.

The following table shows how the originator's variables were mapped to the appropriate BODC parameter codes:

Originator's variable Units Description BODC parameter code Units Comments
Sea surface height m Surface elevation (Mean Water Height) of the water body by acoustic doppler current profiler (ADCP) ASLVMWHA Metres -
East cm/s Eastward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP) LCEWAP01 cm s -1 -
North cm/s Northward current velocity (Eulerian) in the water body by moored acoustic doppler current profiler (ADCP) LCNSAP01 cm s -1 -
Vertical cm/s Upward current velocity in the water body by moored acoustic doppler current profiler (ADCP) LRZAAP01 cm s -1 -
Error cm/s Current velocity error in the water body by moored acoustic doppler current profiler (ADCP) LERRAP01 cm s -1 -
3beam_matrix None - - - Boolean value stating whether the data originator had performed the three beam correction on a particular bin. Values indicating that the three beam correction had been performed were converted into an originator's flag ('L') when the data were transferred into qxf format.
Height from sea bed m Height above bed (ADCP bin) in the water body HBINAA01 Metres -

The reformatted data were visualised using the in-house EDSERPLO 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.

COBS RDI Teledyne 600 kHz ADCP Data Processing

Sampling Strategy

Two mooring sites were maintained for the duration of the Liverpool Bay Coastal Observatory project. Moored instruments present at Site A (also known as Site 1/9) through the entire data collection phase of the observatory. From 05 April 2005 (Cruise PD11_05) moorings were also present at an additional Site B. From April 2005 until December 2009 mooring Site B was located at Coastal Observatory Station 20. The moorings were moved to Station 21 from January 2010, where they remained until the end of the observatory.

Originator's Processing

The raw ADCP data were processed using the standard RDI software bblist which resulted in the creation of two files, the first containing the current velocities separated by bin depth and an auxiliary file containing the variables heading, pitch, roll, temperature and pressure. The variables present in the auxiliary files were only used for quality control purposes with the exception of pressure, which was used to calculate sea surface height taking into account the latitude and the height of the transducer head above the seabed, which was estimated to be 0.7 m. Sea surface height and the current velocity data were then combined into one file.

Before the data were supplied to BODC, some quality control procedures were performed by the Data Originator. First the Originator corrected the latitude values to take into account the difference between magnetic north and true north (magnetic declination). The Originator also corrected the latitude values for compass error caused by localised magnetic fields such as the ADCP frame and battery, using HF radar data recorded by two HF radars located at Abergele and Formby as a reference. Once compass errors for all ADCP series recorded at Site A had been calculated, a mean of all errors was taken. As the ADCP compass error is a random error, the expected mean of all errors is approximately 0°, however the Originator found that the actual mean compass error was approximately 5.3°. All compass errors were therefore modified by 5.3°. The compass error values given in the Originator's data processing documents have taken this adjustment into account.

The bins recorded above the sea surface were then converted to absent data indicators by the Data Originator. If there were any problems with the pressure data recorded by the ADCP, then data from another instrument attached to the same frame was used instead. If no pressure records were available, then backscatter intensity was used to calculate the sea surface. The top three bins have been removed in all series to remove noise in these data caused by side lobe contamination. A more detailed explanation of all of the quality control procedures performed before the data were submitted to BODC can be found in the Originator's ADCP quality control methodology document.

Analysis of the Coastal Observatory ADCP data found that some of the midwater beams had been contaminated, with the Originator suspecting that the cause was the contamination of individual acoustic beams by the recovery line attached to the ADCP lander frame. As the contamination only affected individual acoustic beams, it was possible to estimate the horizontal component of the contaminated beam using the vertical components of the two perpendicular beams and the unaffected horizontal component. A full description of how this procedure was carried out can be found in the Originator's ADCP correction report

Finally a visual inspection of the data was carried out to find any obvious errors which had not been corrected by the previous quality control checks.


Project Information

Oceans 2025 Theme 10, Sustained Observation Activity 11: Liverpool Bay and Irish Sea Coastal Observatory

Sustained, systematic observations of the ocean and continental shelf seas at appropriate time and space scales allied to numerical models are key to understanding and prediction. In shelf seas these observations address issues as fundamental as 'what is the capacity of shelf seas to absorb change?' encompassing the impacts of climate change, biological productivity and diversity, sustainable management, pollution and public health, safety at sea and extreme events. Advancing understanding of coastal processes to use and manage these resources better is challenging; important controlling processes occur over a broad range of spatial and temporal scales which cannot be simultaneously studied solely with satellite or ship-based platforms.

Considerable effort has been spent by the Proudman Oceangraphic Laboratory (POL) in the years 2001 - 2006 in setting up an integrated observational and now-cast modelling system in Liverpool Bay (see Figure), with the recent POL review stating the observatory was seen as a leader in its field and a unique 'selling' point of the laboratory. Cost benefit analysis (IACMST, 2004) shows that benefits really start to accrue after 10 years. In 2007 - 2012 exploitation of (i) the time series being acquired, (ii) the model-data synthesis and (iii) the increasingly available quantities of real-time data (e.g. river flows) can be carried out through Sustained Observation Activity (SO) 11, to provide an integrated assessment and short term forecasts of the coastal ocean state.

BODC image

Overall Aims and Purpose of SO 11

Measurement and Modelling Activities

More detailed information on this Work Package is available at pages 32 - 35 of the official Oceans 2025 Theme 10 document: Oceans 2025 Theme 10

Weblink: http://www.oceans2025.org/

References:

IACMST., 2004. The Economics of Sustained Marine Measurements. IACMST Information Document, N0.11, Southampton: IACMST, 96 pp


Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 2007-07-26
End Date (yyyy-mm-dd) 2007-08-29
Organization Undertaking ActivityProudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierPOLRIG1010
Platform Categorysubsurface mooring

Proudman Oceanographic Laboratory Rig#1010

Deployment and Recovery

This rig was deployed as part of the Liverpool Bay Coastal Observatory during R.V. Prince Madog cruise PD16_07. All the major moorings objectives were accomplished during this cruise. Recovery of the rig took place during R.V. Prince Madog cruise PD20_07.

Rig Position 53° 32.110'N 3° 21.413'W
Water Depth 22.4 m
Deployed (UT) 2007-07-26 11:53 UTC
Recovered (UT) 2007-08-29 12:22 UTC
No. of days 34

Rig Description

This rig was a bottom frame comprising of the following instruments 0.5 m above the seabed; Waves Acoustic Doppler Current Profiler (ADCP), a SonTek ADV Logger and a SeaBird 16plus. The frame was fitted with a fizz link, a spooler with 200m of rope for recovery of the ballast weight and two Benthos releases s/n 70355 (Rx 10.0 kHz, Tx 12.0 kHz, release B) and s/n 71919 (Rx 10.5 kHz, Tx 12.0 kHz, release C).


Instrument Serial Number Parameters Measured Sampling Description Comments
RDI 600 kHz Waves ADCP 2391 Horizontal current velocity components
Vertical current velocity components
Temperature
Pressure
Mode 1: 100 pings every 10 minutes (velocity standard deviation 0.007 m s-1). 35 x 1 m bins (2.65 - 36.65 m above the bed). Sound velocity calculated from temperature, depth and salinity of 32.
Beam co-ordinates - speeds, correlation, echo intensity, % good.
Clock reset at 10:50 UTC 2007-07-25; delayed start 08:00 UTC 2007-07-26.
Sea-Bird 16plus
V RS-485 1.0
4738 Temperature
Conductivity
Pressure
Turbidity
Sample interval 600 s; digiquartz integration time 40 s, range 400; pump 0.5 s, 1 s delay. Fitted to base of frame with pumped conductivity sensor underneath.
SeaPoint turbidity sensor 10490 taped to roll bar; set up for 0 - 125 FTU range.
Clock set at 08:28 UTC 2007-07-25; delayed start at 08:00 UTC 2007-07-26.
SonTek ADV (Acoustic Doppler Velocimeter) ADV Logger G4120; head B331. Current velocity and direction at a small sampling volume at a fixed (10 cm) distance from probe, using 3D Doppler techniques. Sample rate 16 Hz; burst interval 3600 s; samples in each burst 19200; burst length 1200 s. Distance from center of three prong head on ADV transmitter to deck was 1.25 m (i.e. above sea bed).
Time set to 10:17 UTC on 2007-07-25; Delayed start at 08:00 UTC on 2007-07-26.

Other Series linked to this Data Activity - 946345

Cruise

Cruise Name PD16/07
Departure Date 2007-07-26
Arrival Date 2007-07-28
Principal Scientist(s)Phil J Knight (Proudman Oceanographic Laboratory)
Ship RV Prince Madog

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameCOA
CategoryOffshore area
Latitude53° 31.51' N
Longitude3° 23.00' W
Water depth below MSL26.0 m

Liverpool Bay Coastal Observatory Mooring Site A (COA/Site 1/Site 9)

This station is the main mooring site for the Proudman Oceanographic Laboratory (POL) Liverpool Bay Coastal Observatory and was first occupied in 2002. It is also known both as Coastal Observatory Site 1 and Site 9. POL perform two main types of activities at this station: they deploy moorings; and in addition, they take CTD profiles during each site visit. The station lies within a box of mean water depth 22.5 m with the following coordinates:

Box Corner Latitude (+ve North) Longitude (+ve East)
North-west corner 53.54097 -3.42958
South-east corner 53.50945 -3.33714

The position of this station relative to the other POL Coastal Observatory sites can be seen from the figure below.

BODC image

Mooring Deployment History

2011

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS, OXY 1117, 1121, 1125, 1127, 1130, 1132, January - November
SmartBuoy CTD x 2, AC-S, CT x 2, FL x 3, OBS x 2, PAR x 2, WMS, NAS, OXY, T x 2 1116, 1120, 1124 January - November

2010

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, ADV, OBS 1086, 1090, 1094, 1098, 1102, 1106, 1109 January - December
SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T 1085, 1089, 1093, 1097, 1101, 1105, 1108, 1112 January - December

2009

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, ADV, OBS 1055, 1062, 1067, 1071, 1074, 1078, 1082 January - December
SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T 1054, 1061, 1066, 1070, 1073, 1077, 1081 January - December

2008

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, ADV, OBS 1024, 1028, 1032, 1036, 1041, 1044, 1047, 1051 January - December
SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T LB1_047/1023, LB1_048/1027, LB1_049/1031, LB1_050/1035, 1040, 1043, LB1_053/1050 January - December

2007

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, ADV, OBS 990, 997, 1001, 1005, 1010, 1014, 1017, 1021 January - December
SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T LB1_039/989, LB1_040/996, LB1_041/1000, LB1_042/1004, LB1_043/1009, LB1_044/1013, LB1_045/1016, LB1_046/1020 January - December

2006

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, ADV, OBS 951, 962, 966, 970, 974, 978, 982, 986 January - December
SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD 958, 961, 965, 969, 973, 977, LB1_037/981, LB1_038/985 January - December

2005

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CT 913, 914, 921, 925, 929, 933, 938, 942, 945, 949 January - December
SmartBuoy CT, FL, OBS, PAR, WMS, NAS, OXY 912, 920, 924, 928, 932, 937, LB1_028/941, LB1_029/944, LB1_030/948 January - December
Frame with telemetry buoy ADCP 914 March - April

2004

Rig Type Typical Instruments Rig IDs Comment
Frame BPR, ADCP, TR, CT 890, 892, 893, 896, 898, 900, 902, 904, 907, 908, 910, 911 January - December
SmartBuoy CT, FL, OBS, PAR, WMS, NAS 889, 891, 895, 897, 899, 901, 903, 906, 909 January - December
Frame with telemetry buoy ADCP 893, 908, 911 April - May, October - December

2003

Rig Type Instruments Rig IDs Comment
Frame BPR, ADCP, TR, CT 861, 864, 866, 869, 872, 878, 880, 883, 885, 887, 888 January - December
SmartBuoy CT, FL, OBS, PAR, WMS, NAS 863, 865, 867, 870, 871, 877, 879, 882, 884, 886 January - December

2002

Rig Type Instruments Rig IDs Comment
Frame BPR, ADCP, TR, CT 851, 854, 856, 858 August - December
Line mooring CT x 3 853, 855 August - November
SmartBuoy CT, FL, OBS, PAR, WMS, NAS 857, 860 November - December

2001

Rig Type Instruments Rig IDs Comment
Frame ADCP, OBS 838, 839, 840, 841, 843, 844, 845, 846, 848, 849 September

CTD Sampling History

Year Number of Cruises Total Casts per year
2011 6 116 including a 46 cast tidal cycle from 2011-04-18 to 2011-04-19 and a 51 cast tidal cycle station from 2011-07-27 to 2011-07-28
2010 8 71 including a 52 cast tidal cycle station from 2010-04-28 to 2010-04-29
2009 7 21
2008 9 75 including a 54 cast tidal cycle station from 2008-05-13 to 2008-05-14
2007 8 71 including a 51 cast tidal cycle station from 2007-05-15 to 2007-05-16
2006 9 72 including a 53 cast tidal cycle station from 2006-05-09 to 2006-05-10
2005 9 41 including a 22 cast tidal cycle station from 2005-04-05 to 2005-04-06
2004 9 77 including a 54 cast tidal cycle station from 2004-05-11 to 2004-05-12
2003 10 28
2002 4 13

The CTD instrument package for these cruises was a Sea-Bird 911plus, with beam transmissometer, fluorometer, LICOR PAR sensor, LISST-25, and oxygen sensor.

Key

AC-S = Absorption and attenuation spectrophotometer
ADCP = Acoustic Doppler Current Profiler
ADV = Acoustic Doppler Velocimeter
BD = Bacterial degradation experiment
BPR = Bottom Pressure Recorder
CT = Conductivity and temperature logger
CTD = Conductivity, temperature, depth sensor
FL = Fluorometer
NAS = in-situ nutrient analyser
OBS = Optical Backscatter Turbidity meter
OXY = Oxygen sensor
PAR = PAR sensor
T = Temperature logger
TR = Transmissometer
WMS = Automatic water sampler

Other Series linked to this Fixed Station for this cruise - 862031 862239 862448 862669 862762 862866 943175 943187 943280 946345 946370 946382 946401 1082310

Other Cruises linked to this Fixed Station (with the number of series) - CO 01/12 (5) PD01/08 (17) PD01/11 (14) PD02/03 (10) PD02/05 (11) PD02/07 (15) PD02/09B (17) PD02/10 (15) PD04/06 (1) PD05/10 (16) PD06/04 (12) PD06/07 (16) PD07/08 (14) PD07/11 (17) PD09/06 (11) PD09/07 (64) PD09/08 (16) PD10/03 (9) PD10/10 (14) PD11/04B (13) PD11/05 (9) PD11/11 (57) PD12/05 (2) PD12/09 (16) PD13/07 (14) PD14/08 (67) PD16/06 (9) PD17/03 (12) PD17/10 (15) PD18/04 (13) PD18/05 (11) PD18/09 (17) PD19/08 (2) PD20/02 (7) PD20/06 (9) PD20/07 (17) PD21/05 (10) PD21/10 (15) PD21/11 (9) PD22/04 (13) PD22/06 (9) PD23/03A (10) PD23/07 (15) PD23/08 (13) PD24/02 (2) PD24/09 (17) PD25/03B (12) PD25/05 (11) PD25/06 (9) PD25/11 (7) PD27/07 (17) PD29/04 (12) PD29/06 (9) PD29/08 (14) PD29/10 (17) PD30/05 (10) PD31/02 (11) PD31/03 (12) PD32/04 (12) PD33/08 (5) PD33/09 (16) PD34/03 (12) PD34/05 (10) PD35/02 (11) PD35/06 (14) PD36/10 (16) PD37/06 (14) PD37/08 (18) PD38/03 (13) PD38/04 (12) PD38/09 (16) PD41/05 (11) PD43/11 (11) PD44/03 (7) PD47/09 (15) PD48/03 (5) PD48/04 (8) PD48/05 (10) PD49/10 (14) PD52/04 (8)


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