Metadata Report for BODC Series Reference Number 1194730


Metadata Summary

Data Description

Data Category Fluorescence or pigments
Instrument Type
NameCategories
Chelsea Instruments MINITracka II fluorometer  fluorometers
Instrument Mounting moored surface buoy
Originating Country United Kingdom
Originator Mr Tom Hull
Originating Organization Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory
Processing Status banked
Project(s) Coastal Observatory
 

Data Identifiers

Originator's Identifier LB1_023_FL_175064
BODC Series Reference 1194730
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2005-04-10 12:30
End Time (yyyy-mm-dd hh:mm) 2005-05-11 13:00
Nominal Cycle Interval 1800.0 seconds
 

Spatial Co-ordinates

Latitude 53.53320 N ( 53° 32.0' N )
Longitude 3.36380 W ( 3° 21.8' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor Depth 1.0 m
Maximum Sensor Depth 1.0 m
Minimum Sensor Height 25.9 m
Maximum Sensor Height 25.9 m
Sea Floor Depth 26.9 m
Sensor Distribution Fixed common depth - All sensors are grouped effectively at the same depth which is effectively fixed for the duration of the series
Sensor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum Approximate - Depth is only approximate
 

Parameters

BODC CODE Rank Units Short Title Title
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)
ACYCAA01 1 Dimensionless Record_No Sequence number
CPHLPS01 1 Milligrams per cubic metre chl-a_water_ISfluor_sampcal Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer and calibration against sample data
FVLTTDZX 1 Dimensionless Fl_output Instrument output (arbitrary scale) by autoranging chlorophyll fluorometer
 

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

Smartbuoy quality report - Fluorescence and Chlorophyll

Originator's Quality report

Originator's identifier BODC identifier Summary of originator's flags applied
3 4 11 12 16 21 200 255
LB2_001_FL_2211 1195131           CHLOR    
LB1_002_FL_2211 1193277           CHLOR    
LB2_003_FL_2211 1195223   CHLOR
FLUOR
      CHLOR    
LB1_004_FL_2211 1193370   CHLOR
FLUOR
      CHLOR    
LB1_005_FL_175063 1193425 CHLOR         CHLOR   CHLOR
FLUOR
LB1_006_FL_2211 1193498   CHLOR
FLUOR
      CHLOR    
LB1_007_FL_175063 1193542 CHLOR         CHLOR   CHLOR
FLUOR
LB1_008_FL_2211 1193622   CHLOR
FLUOR
      CHLOR    
LB1_009_FL_175063 1193702 CHLOR
FLUOR
CHLOR       CHLOR   CHLOR
FLUOR
LB1_010_FL_2211 1193787   CHLOR
FLUOR
      CHLOR    
LB1_011_FL_175063 1193867       CHLOR
FLUOR
  CHLOR   CHLOR
FLUOR
LB1_012_FL_2211 1193935         CHLOR
FLUOR
CHLOR    
LB1_013_FL_175063 1193972       CHLOR
FLUOR
       
LB1_014_FL_2211 1194059   CHLOR
FLUOR
      CHLOR    
LB1_015_FL_175063 1194127       CHLOR
FLUOR
    CHLOR
FLUOR
 
LB1_016_FL_2211 1194207   CHLOR
FLUOR
      CHLOR    
LB1_018_FL_2211 1194361           CHLOR    
LB1_020_FL_2211 1194521           CHLOR    
LB1_022_FL_2211 1194662   CHLOR
FLUOR
      CHLOR    
LB1_023_FL_175064 1194730     CHLOR
FLUOR
    CHLOR   CHLOR
FLUOR

FLUOR = Fluorescence
CHLOR = Chlorophyll concentration

The originator's files including flags applied have been archived by BODC and are available on request.

Originator's flag 4

Flag 4 is used by CEFAS for data that have failed the QA process because it is suspected that they have been biofouled. As a result the cycles flagged in this way have been assigned BODC flag L (improbable value - originator's quality control).

Originator's flag 11

Flag 11 is used by CEFAS for data that have failed the QA process because the sensor platform was out of position. As a result the cycles flagged in this way have been assigned BODC flag L (improbable value - originator's quality control).

Originator's flag 12

Flag 12 is used by CEFAS for data that have failed the QA process because of a suspected sensor malfunction. As a result the cycles flagged in this way have been assigned BODC flag L (improbable value - originator's quality control).

Originator's flag 16

Flag 16 is used by CEFAS for data that have failed the QA process because of low battery voltage. As a result the cycles flagged in this way have been assigned BODC flag L (improbable value - originator's quality control).

Originator's flag 21

Flag 21 is used by CEFAS for data that have failed the QA process because possible chlorophyll fluorescence quenching. As a result the cycles flagged in this way have been assigned BODC flag L (improbable value - originator's quality control).

Originator's flag 200

Flag 21 is used by CEFAS for data that have failed the QA process because results are outside limits during quality control level 2. As a result the cycles flagged in this way have been assigned BODC flag L (improbable value - originator's quality control).

Originator's flag 255

Flag 255 is used by CEFAS for series that are from a backup (secondary) channel. The originator has confirmed that these do not indicate that the quality of the data is poor, rather that the same parameter was collected by another instrument which would be used in preference over these data. As a result BODC do not consider it appropriate to retain these as suspect data flags and the flags have been removed from the final dataset.


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

Chelsea Instruments MINItracka Fluorometer

The MINI tracka Fluorometer is an in-situ optical sensor that uses a single high intensity LED light source and, according to the manufacturer, is designed to enhance rejection of ambient daylight. The fluorometer provides a linear response between chlorophyll concentration and fluorometer voltage.

Sensor specifications, current at August 2006, are given in the table below. More information can be found at the manufacturer's specification sheet .

Sensor Specifications

  Chlorophyll-a Chlorophyll-a Rhodamine Amido Rhodamine Fluorescein
Excitation wavelengths 430/30 nm 470/30 nm 470/30 nm 425/30 nm 480/80 nm
Emission wavelength 685/30 nm 685/30 nm 590/45 nm 550/30 nm 530/30 nm
Concentration range 0.03-100 µg l -1 0.03-100 µg l -1 0.03-100 µg l -1 0.04-200 µg l -1 0.03-100 µg l -1
Resolution 0.01 µg l -1 0.01 µg l -1 0.01 µg l -1 0.025 µg l -1 0.01 µg l -1
Calibration standard Chlorophyll-a in acetone Chlorophyll-a in acetone      
  Nephelometer Phycoerythrin Phycocyanin
Excitation wavelengths 470/30 nm 530/30 nm 590/35nm
Emission wavelength 470/30 nm 580/30 nm 645/35 nm
Concentration range 0.04-100 FTU 0.03-100 µg l -1 0.03-100 µg l -1
Resolution 0.01 FTU 0.01 µg l -1 0.01 µg l -1
Mechanical   Electrical  
Body Size 149 mm long x 70 mm dia Input Voltage 7 to 40 VDC
Weight in Air 0.7 Kg Output Voltage 0 to 4 VDC (linear)
Weight in Water 0.15 Kg Power requirements 0.7 W typical
Depth Rating 600 m Signal : Noise 10,000 : 1 @ full scale

CEFAS SmartBuoy Parameter Mapping 2002-2005

Orginators parameters have been mapped to BODC parameters in the following way:

Originators parameter Originators units BODC parameter BODC units Conversion Comments
Conductivity mmho cm -1 CNDCPR01 S m -1 /10  
Temperature Degrees Celsius TEMPPR01 Degree Celsius None  
Salinity   PSCLCCI1   None Data calibrated with field samples
Fluorescence SP (arbitary values) FVLTTDZX Dimensionless None  
Chlorophyll concentration µg l -1 CPHLPS01 mg m -3 None mg m -3 = µg l -1
Turbidity FTU TURBPR01 NTU None FTU = NTU
Suspended load mg l -1 TSEDBSCL mg l -1 None  
Total oxidised nitrogen µmol l -1 NTRZNS01 µmol l -1 None  
PAR irradiance µE m -2 s -1 IRRDUV01 µE m -2 s -1 None PAR sensor deployed in water column
Silicate µmol l -1 SLCAAATX µmol l -1 None  
Total oxidised nitrogen µmol l -1 NTRZAATX µmol l -1 None  
Suspended load mg l -1 TSEDGVP2 mg l -1 None Measure by filtration and gravimetry and calibration against sample data

Please note that this document includes details of all of the parameters supplied by CEFAS at the time of submission, each series may contain only a subset of these parameter.

Cefas SmartBuoy data processing

This document outlines the procedures in place at Cefas in August 2005 for processing and quality assuring SmartBuoy data.

Raw data files are processed and the data move through 4 levels, starting with raw data at level 0 through to level 3, where data are fully quality-assured and expressed in appropriate units. The application of the procedures at each level result in data deemed fit to progress to the next level.

Cefas Quality Assurance (QA) Protocols

At Level 0, raw binary data files from the loggers are transferred to the network.

Automated checks - Level 1

Level 1 involves applying automated quality assurance procedures to the data. These include the following steps:

The data are now at QA status = 1.

Manual checks - Level 2

Level 1 burst mean data are now ready for manual QA procedures in order to progress to Level 2. Deployment notes are consulted for any comments on sensor performance or malfunction and post-deployment photographs of sensors, if available, are examined.

Cefas use a data visualisation tool to examine the SmartBuoy data.

Calibrations - Level 3

The combined information from Level 2 is used to determine the periods during which the data series are considered suspect. The data have now reached QA status = 2 and can progress to Level 3, where they will be fully calibrated with field-derived sample data.

The data have now reached QA status = 3 as time stamped, field calibrated burst mean data with parameter codes and units stored on SmartBuoy database with associated uncertainty or 95% confidence limits as appropriate. All SmartBuoy data banked at BODC have passed full Cefas QA procedures. Data that fail the Cefas QA checks are not submitted for banking.

General Data Screening carried out by BODC

BODC screen both the series header qualifying information and the parameter values in the data cycles themselves.

Header information is inspected for:

Documents are written by BODC highlighting irregularities which cannot be resolved.

Data cycles are inspected using time or depth series plots of all parameters. Currents are additionally inspected using vector scatter plots and time series plots of North and East velocity components. These presentations undergo intrinsic and extrinsic screening to detect infeasible values within the data cycles themselves and inconsistencies as seen when comparing characteristics of adjacent data sets displaced with respect to depth, position or time. Values suspected of being of non-oceanographic origin may be tagged with the BODC flag denoting suspect value; the data values will not be altered.

The following types of irregularity, each relying on visual detection in the plot, are amongst those which may be flagged as suspect:

If a large percentage of the data is affected by irregularities then a Problem Report will be written rather than flagging the individual suspect values. Problem Reports are also used to highlight irregularities seen in the graphical data presentations.

Inconsistencies between the characteristics of the data set and those of its neighbours are sought and, where necessary, documented. This covers inconsistencies such as the following:

This intrinsic and extrinsic screening of the parameter values seeks to confirm the qualifying information and the source laboratory's comments on the series. In screening and collating information, every care is taken to ensure that errors of BODC making are not introduced.

SmartBuoy data processing by BODC

The following outlines the procedures that take place at BODC for banking Cefas SmartBuoy data.

BODC receives SmartBuoy data from Cefas after all quality checks have been passed and all possible calibrations applied. The data files are submitted as separate MS Excel spreadsheets for each parameter, i.e. there are separate files for temperature and salinity from the same instrument. An exact copy of the data is archived for safekeeping upon arrival.

Once the submitted data files are safely archived, the data undergo standard reformatting and banking procedures:


Project Information

Proudman Oceanographic Laboratory Coastal Observatory

The Coastal Observatory was established by Proudman Oceanographic Laboratory as a coastal zone real time observing and monitoring system. The main objective is to understand a coastal sea's response both to natural forcing and to the consequences of human activity. Near real-time measurements will be integrated with coupled models into a pre-operational coastal prediction system whose results will be displayed on the World Wide Web.

The Observatory is expected to grow and evolve as resources and technology allow, all the while building up long time series. A site selection pilot study was carried out in September 2001 and the Observatory became operational in August 2002.

The site is located in Liverpool Bay and is subject to typical coastal sea processes, with strong tides, occasional large storm surges and waves, freshwater input, stable and unstable stratification, high suspended sediment concentration and biogeochemical interaction. Measurements and monitoring will focus on the impacts of storms, variations in river discharge (especially the Mersey), seasonality and blooms in Liverpool Bay.

A variety of methods will be used to obtain measurements, including:

  1. Moored instruments for in situ time series of currents, temperature and salinity profiles, and surface waves and meteorology. It is hoped that turbidity and chlorophyll measurements will be made at another site as the Observatory progresses;
  2. The Cefas Smartbuoy for surface properties such as nutrients and chlorophyll, starting late 2002;
  3. R.V. Prince Madog to carry out spatial surveys and service moorings;
  4. Instrumented ferries for near surface temperature, salinity, turbidity, chlorophyll and nutrients. The first route will be Liverpool to Douglas, Isle of Man, starting late 2002;
  5. Drifters for surface currents and properties such as temperature and salinity, starting in 2004;
  6. Tide gauges, with sensors for meteorology, waves, temperature and salinity, where appropriate;
  7. Meteorological data from Bidston Observatory and Hilbre Island, HF radar and tide gauge sites;
  8. Shore-based HF radar measuring waves and surface currents out to a range of 50 km, starting in 2003;
  9. Satellite data, with infrared for sea surface temperature and visible for chlorophyll and suspended sediment.

The partners currently involved with the project are listed below:

A summary of Coastal Observatory cruises to date on R.V. Prince Madog is given in the table below:

Year No. of cruises Work summary
2001 1 Site selection and pilot study. 95 CTD casts.
2002 4 POL moorings deployed and serviced
Cefas Waverider and SmartBuoy deployed and serviced
103 CTD casts
2003 10 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
341 CTD/LISST casts
2004 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
347 CTD/LISST casts
2005 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
268 CTD/LISST casts
2006 11 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
508 CTD/LISST casts
2007 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
471 CTD/LISST casts
2008 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
260 CTD/LISST casts
2009 7 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
213 CTD/LISST casts
2010 8 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
268 CTD/LISST casts
2011 6 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
307 CTD/LISST casts to date, ongoing

Data Activity or Cruise Information

Data Activity

Start Date (yyyy-mm-dd) 2005-04-05
End Date (yyyy-mm-dd) 2005-05-11
Organization Undertaking ActivityProudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Country of OrganizationUnited Kingdom
Originator's Data Activity IdentifierPOLRIG920
Platform Categorymoored surface buoy

Smartbuoy deployment LB1_023 / POLRIG#920

Deployment and Recovery

This rig was due to be deployed on the earlier cruise PD11_05 but it was too rough for SmartBuoy operations so it was deployed as part of the Liverpool Bay Coastal Observatory during R.V. Prince Madog cruise PD12_05. The mooring also came adrift on 13 April 2005 and was on the surface for eight days before being put back into position by a CEFAS boat on 21 April 2005. The data in this period is unreliable and has been flagged. Recovery of the rig took place during R.V. Prince Madog cruise PD18_05.


Rig Position 53° 32.030'N 3° 21.565'W
Water Depth 20.5 m
Deployed 5 April 2005 14:07 GMT
Recovered 11 May 2005 13:25 GMT
No. of days 36

Rig Description

This rig is a SmartBuoy with a single line mooring, comprising a surface CEFAS SmartBuoy along with a Sea-Bird MicroCAT and an Aanderaa current meter attached at depth on the mooring line. The single point mooring was composed mainly of half inch long link chain, marked at the surface by a 1.8 m diameter toroid (the CEFAS SmartBuoy) and anchored by a half tonne clump of scrap chain. The CEFAS SmartBuoy was fitted with two surface CTDs, light sensors at 1 and 2 m below the surface, a water sampler which obtains water samples once per day for laboratory nutrient (nitrate, nitrite, phosphate) determination and an in situ NAS2E nutrient analyser. In addition a Druck 5 bar pressure transducer, a battery monitor and an analog roll / pitch device were attached to the buoy. The CTD and light data were transmitted back to CEFAS via Orbcomm.


The tables below details the CEFAS instrumentation


Eco System Monitor - V2a (UL017)

Instrument Serial
Number
Parameters Meter
depth (m)
Record
Length (days)
MiniTracka Chlorophyll Fluorometer 175064 Fluorescence 1 32
Falmouth Scientific OEM CT sensor 1841 Temperature
Conductivity
(Salinity Derived)
1 -
Seapoint turbidity meter 1679 Turbidity 1 32
Druck 5 bar Pressure Transducer 1245469 Pressure (ADCP and Telemetry) 1 No information available
Analog Devices Roll / Pitch 17 Roll
Pitch
1 No information available
Battery Monitor 17 Battery 1 No information available
LI-192SB PAR Sensor (UWQ6127) 18 PAR
Vertical Light attenuation coefficient
2 32
LI-192SB PAR Sensor (UWQ6078) 13 PAR
Vertical light attenuation coefficient
1 32

Eco System Monitor - V2a (UL028)

Instrument Serial
Number
Parameters Meter
depth (m)
Record
Length (days)
Seapoint Chlorophyll Fluorometer 175063 Fluorescence 1 32
Falmouth Scientific OEM CT sensor 1401 Temperature
Conductivity
(Salinity Derived)
1 32
Seapoint Turbidity meter 1550 Turbidity 1 32
Druck 5 bar Pressure Transducer 1220412 Pressure (ADCP and Telemetry) 1 No information available
Analog Devices Roll / Pitch 28 Roll
Pitch
1 No information available
Battery Monitor 28 Battery 1 No information available

Stand Alone Sensors

Instrument Serial
Number
Parameters Meter
depth (m)
Record
Length (days)
WMS-1 Aqua Monitor 2384 Silicate
Suspended Load
Total Oxidised Nitrogen
1 19
WMS-2 Aqua Monitor 2326 Silicate
Suspended Load
Total Oxidised Nitrogen
1 20
NAS-2E Nutrient Sensor 2313 Total Oxidised Nitrogen 1 No information available

The table below details the POL instrumentation

Instrument Serial Number DSU Number Meter Level Parameters Measured Sampling Interval Comments
Sea-Bird MicroCAT SBE37-IM V2.1 2506 - 5 m below surface Temperature
Conductivity
10 minutes Clock set at 18:09:00 on 4 April 2005. Delayed start 10:00:00 on 05 April 2005. Stopped at 22:11:00 on 11 May 2005. Clock is 9s fast. Sample number 5258.
Aanderaa current meter RCM7 9959 8123 10 m below surface Temperature
Conductivity
10 minutes No fin (low temperature setting) and conductivity: 10 minute samples. Started at 17:44:00 on 4 April 2005. Stopped at 01:21:30 on 12 May 2005. Clock 44 seconds slow.

DSU = Data Storage Unit

Other Series linked to this Data Activity - 1194766 1194729 1194742 701674 1194754 701846 1194778 1194791

Cruise

Cruise Name PD11/05
Departure Date 2005-04-05
Arrival Date 2005-04-07
Principal Scientist(s)M John Howarth (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 - 701926 1194729 1194742 1194754 1194766 1194778 1194791 1622699

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) PD11/11 (57) PD12/05 (2) PD12/09 (16) PD13/07 (14) PD14/08 (67) PD16/06 (9) PD16/07 (15) 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