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Metadata Report for BODC Series Reference Number 1801532


Metadata Summary

Data Description

Data Category Hydrography time series at depth
Instrument Type
NameCategories
YSI 6-series multiparameter water quality sondes  sea level recorders; fluorometers; radiometers; optical backscatter sensors; water temperature sensor; nutrient analysers; salinity sensor; dissolved gas sensors; pH sensors; redox potential sensors
Instrument Mounting null
Originating Country United Kingdom
Originator Dr Matthew Blackburn
Originating Organization Scottish Environment Protection Agency, Edinburgh
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) -
 

Data Identifiers

Originator's Identifier CAMPBELTOWN_DATA_BODC_GMT/110303
BODC Series Reference 1801532
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2011-03-03 12:01
End Time (yyyy-mm-dd hh:mm) 2011-04-06 11:31
Nominal Cycle Interval 1800.0 seconds
 

Spatial Co-ordinates

Latitude 55.42312 N ( 55° 25.4' N )
Longitude 5.58329 W ( 5° 35.0' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor or Sampling Depth 0.25 m
Maximum Sensor or Sampling Depth 0.25 m
Minimum Sensor or Sampling Height 14.75 m
Maximum Sensor or Sampling Height 14.75 m
Sea Floor Depth 15.0 m
Sea Floor Depth Source CRREP
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 Approximate - Depth is only approximate
 

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
CPHLZZXX1Milligrams per cubic metreConcentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase]
DOXYZZ011Micromoles per litreConcentration of oxygen {O2 CAS 7782-44-7} per unit volume of the water body [dissolved plus reactive particulate phase] by in-situ sensor
ODSDM0211Parts per thousandSalinity of the water body
OXYSZZ011PercentSaturation of oxygen {O2 CAS 7782-44-7} in the water body [dissolved plus reactive particulate phase]
TEMPPR011Degrees CelsiusTemperature of the water body
TURBXXXX1Nephelometric Turbidity UnitsTurbidity of water in 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

Campbeltown Monitoring Buoy 2010 - 2011 Quality Report

Screening and Quality Control

Data have had quality control applied by the Scottish Environment Protection Agency (SEPA) where any suspect data was removed. Data then went through BODC quality control procedure where suspect data were flagged but not removed.

During transfer to BODC parameter codes, any data that were less than zero were flagged as M, this occurred only in the TURBXXXX and CPHLZZXX channels. Data then went through BODC quality control were data were screened using in house visualisation software. Any obvious outliers and spikes were looked at in closer detail and flagged if necessary. It was not considered that the data required extensive flagging as the data had already been through thorough SEPA QC procedures.

There were a number of cycles in the data where TURBXXXX and CPHLZZXX where -1 NTU and -1 mg m-3 respectively. The absent data value of the BODC parameter codes TURBXXXX and CPHLZZXX is also -1 which caused an issue post transfer. This resulted in any data points where TURBXXXX and CPHLZZXX equaled -1 to be updated to -0.99 NTU and -0.99 mg m-3 respectively. This adjustment was carried out for the following cycles:

  • 22/07/2010 04:00 - TURBXXXX
  • 25/07/2010 21:15 - TURBXXXX
  • 26/04/2011 01:30 - CPHLZZXX
  • 26/04/2011 22:00 - CPHLZZXX
  • 27/04/2011 22:00 - CPHLZZXX
  • 27/04/2011 23:30 - CPHLZZXX
  • 29/04/2011 02:00 - CPHLZZXX
  • 29/04/2011 06:30 - CPHLZZXX
  • 30/04/2011 14:30 - CPHLZZXX
  • 01/05/2011 11:00 - CPHLZZXX
  • 03/05/2011 19:30 - CPHLZZXX
  • 02/06/2011 03:30 - CPHLZZXX

Once the data were split into cruise-to-cruise events, there were cruises where the PHXXZZXX channel was null throughout due to originator quality control procedures. When this was the case, the channel was removed from the data during BODC quality control.


Data Access Policy

Open 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.

If the Information Provider does not provide a specific attribution statement, or if you are using Information from several Information Providers and multiple attributions are not practical in your product or application, you may consider using the following:

"Contains public sector information licensed under the Open Government Licence v1.0."


Narrative Documents

YSI 6-Series multiparameter water quality sondes

Basic information

Comprehensive multi-parameter, water quality monitoring sondes. Designed for long-term monitoring, profiling and spot sampling. The 6-series may be split into several categories: V2 Sondes, 600 Sondes, Drinking Water Sondes and System. Each category has a slightly different design purpose with V2 Sondes ideal for long-term monitoring with a greater number of parameters, whereas 600 sondes are ideal for specific applications with fewer parameters available.

Model features/parameters

Features/Parameters V2 Sondes 600 Sondes Drinking Water System
  6600 6600EDS 6920 6820 600OMS 600R 600XL 600XLM 600LS 6920DW 600DW-B 600QS
Field-replaceable probes S S S S S   S S   S S  
RS-232 and SDI-12 standard S S S S S S S S S S S S
Fits 2" wells         S S S S S   S S
Internal memory S S S S S S S S S S S S
Internal power (batteries) S S S   CS     S CS S S  
Flow cell CS SO CS CS   CS CS CS   CS CS CS
Ammonium/ammonia* I   CS CS     SO SO        
Blue green algae CS CS CS CS CS   R1 R1        
Chloride* I   CS CS     SO SO        
Chlorophyll CS CS CS CS CS   R1 R1        
Conductivity S S S S S S S S CS S S S
Depth CS CS CS CS CS   CS CS       CS
Dissolved oxygen I CS R2 R2   CS CS CS       CS
Dissolved oxygen, optical CS CS CS CS CS   R1 R1        
Free chlorine                   CS CS  
Nitrate* I   CS CS     SO SO        
Open channel flow** CS CS CS CS CS   CS CS S      
ORP CS CS CS CS     CS CS   CS CS CS
PAR (Photosynthetically Active Radiation) I I                    
pH CS CS CS CS   CS CS CS   CS CS CS
Resistivity** S S S S S S S S CS S S S
Rhodamine CS CS CS CS CS   R1 R1        
Salinity S S S S S S S S CS S S S
Specific conductance** S S S S S S S S CS S S S
Temperature S S S S S S S S S S S S
Total dissolved solids** S S S S S S S S CS S S S
Turbidity CS CS CS CS CS   R1 R1   CS    
Vented level CS CS CS CS CS   CS CS S      

*Freshwater only**Calculated parameters

Where
S = Standard
CS = Customer Selectable
SO = Special Order
R1 = Available only on 600XL V2 or 600XLM V2
R2 = Available on 6920 V2-1 or 6820 V2-1
I = Available only on 6600 V2-2

 

Sensor Specifications

  Range Resolution Accuracy
Rapid Pulse dissolved oxygen
% air saturation
0 to 500% 0.1% 0 to 200%: ±2% of reading or 2% air saturation saturation, whichever is greater; 200 to 500%: ±6% of reading
Rapid Pulse dissolved oxygen
mg/L
0 to 50 mg/L 0.01 mg/L 0 to 20 mg/L: ±2% of reading or 0.2 mg/L, mg/L whichever is greater; 20 to 50 mg/L: ±6% of reading
ROX optical dissolved oxygena
% air saturation
0 to 500% 0.1% 0 to 200%: ±1% of reading or 1% air % air saturation saturation, whichever is greater; 200 to 500%: ±15% of reading; relative to calibration gases
ROX optical dissolved oxygena
mg/L
0 to 50 mg/L 0.01 mg/L 0 to 20 mg/L: ±1% of reading or 0.1 mg/L, mg/L whichever is greater; 20 to 50 mg/L: ±15% of reading; relative to calibration gases
Conductivityc 0 to 100 mS/cm 0.001 to 0.1 mS/cm ±0.5% of reading + 0.001 mS/cm (range-dependent)
Temperature -5 to 50°C 0.01°C ±0.15°C
pH 0 to 14 units 0.01 unit ±0.2 unit
Shallow depth 0 to 9.1 m (0 to 30 ft) 0.001 m (0.001 ft) ±0.018 m (±0.06 ft)
Medium depth 0 to 61 m (0 to 200 ft) 0.001 m (0.001 ft) ±0.12 m (±0.4 ft)
Deep depth 0 to 200 m (0 to 656 ft) 0.001 m (0.001 ft) ±0.3 m (±1 ft)
Vented level 0 to 9.1 m (0 to 30 ft) 0.001 m (0.001 ft) ±0.003 m (?0.01 ft)
Open-channel flow Calculated measurement, requires vented level
Free chlorine 0 to 3 mg/L 0.01 mg/L ±15% of reading or 0.05 mg/L, whichever is greater
ORP -999 to +999 mV 0.1 mV ±20 mV in Redox standard solutions
Salinity 0 to 70 ppt 0.01 ppt ±1% of reading or 0.1 ppt, whichever is greater
Nitrate/nitrogenb 0 to 200 mg/L-N 0.001 to 1 mg/L-N ±10% of reading or 2 mg/L, (range dependent) whichever is greater
Ammonium/ammoniab 0 to 200 mg/L-N 0.001 to 1 mg/L-N ±10% of reading or 2 mg/L, nitrogen (range dependent) whichever is greater
Chlorideb 0 to 1000 mg/L 0.001 to 1 mg/L ±15% of reading or 5 mg/L, (range dependent) whichever is greater
Turbiditya 0 to 1,000 NTU 0.1 NTU ±2% of reading or 0.3 NTU, whichever is greater in YSI AMCO-AEPA Polymer Standards
Rhodamine WTa 0-200 µg/L 0.1 µg/L ±5% of reading or ±1 µg/L, whichever is greater
Chlorophylla
Range Resolution Linearity
0 to 400 µg/L chl a 0.1 µg/L chl a R2 > 0.9999 for serial dilution of Rhodamine
0 to 100 RFU 0.1% FS; 0.1 RFU WT solution from 0 to 500 µg/L
Blue-green algaea,e
phycocyanin
Range Resolution Linearity
0-280,000 cells/mL 220 cells/mL R2 = 0.9999 for serial dilution of Rhodamine WT from 0 to 400 µg/L
Blue-green algaea,e
phycoerythrin
0-200,000 cells/mL 450 cells/mL R2 = 0.9999 for serial dilution of Rhodamine WT from 0 to 8 µg/L
PAR Range Calibration Stability
400-700 nm waveband ±5% < ±2% change over 1 year
Linearity Sensitivity
Max. deviation of 1% Typically 3µA per 1000 mmol s-1 m-2 in water
a Depth rating for optical probes is 61 m (200 ft); depth rating for anti-fouling optical probes with copper-alloy probe housing is 200 m (656 ft).
b Freshwater only. Maximum depth rating of 15.2 m (50 ft).
c Report outputs of specific conductance (conductivity correct to 25° C), resistivity, and total dissolved solids are also provided. These values are automatically calculated from conductivity according to algorithms found in Standard Methods for the Examination of Water and Wastewater (ed 1989).
d To maintain accuracy specification, flow must be at least 500 mL/min and pH should not change by more than ±0.3 units if mean pH is between 8.5 and 9.3.
e Specification determined using monocultures of Isochrysis sp. and fluorometric extraction of chlorophyll a. Actual detection limits will vary depending on natural algae assemblage.
f Estimated from cultures of Microcystis aeruginosa.
g Estimated from cultures of Synechococcus sp.

For further information, please see the manufacturer's manual and data sheet.

SEPA Short-term Mooring Instrumentation

The SEPA monitoring project has obtained hydrographic data across various long and short term moorings through the deployment of a YSI 6600 multi-parameter-sonde.

SEPA's first short-term mooring occured at Campbeltown between 2010 and 2011 to assess water quality impacts on Campbeltown Loch from an industrial discharge. However, only a small dataset was recovered as the buoy broke loose during a storm. The sonde was attached to a fixed mooring buoy at the surface of the water column.

A second short-term mooring was located in Loch Sunart as part of a water quality investigation in 2012. Again, the sonde was attached to a fixed mooring buoy at the surface.

An additional short-term project took place in the Carron Estuary in 2014 with a site both upstream and downstream as part of an investigation into dissolved oxygen. At the upstream site the sonde was attached to a fixed mooring buoy at the surface of the water column and at the downstream site the sonde was attached to a floating fender.

BODC image

BODC processing of SEPA's short-term monitoring buoys

Data Acquisition and Transfer

The data were sent by SEPA as a .csv file and following BODC's procedures the files were checked for consistency and subsequently archived.

The data were reformatted to QXF format using BODC's established procedures. During the transfer process the file was split into cruise-to-cruise series events. The table below shows how the originator's parameters were mapped to BODC parameters and their units:

Originator's Parameter Originator's Units Description BODC Parameter Code BODC Units Description Comments
Temp deg C - TEMPPR01 °C The degree of hotness of the water column expressed against a standard scale. Includes both IPTS-68 and ITS-90 scales.  
pH pH Units - PHXXZZXX pH Units Minus the log of the hydrogen ion concentration (moles per litre) in the water column.
Salin ppt - ODSDM021 ppt Salinity of the water body  
DO% % Sat - OXYSZZ01 % Saturation of oxygen in the water body, computed (algorithm/data source unspecified) For legacy data Oxygen saturation is not derived by BODC but taken from the data supplied.
DO mg/l - DOXYZZ01 µmol/l Unspecified type of oxygen sensor with no information on whether it has been calibrated against sample data Conversion of * 31.252 was applied during transfer
Turb NTU - TURBXXXX NTU Estimate of suspended sediment concentration based on the proportion of a light transmission in the water column that is reflected back to a co-located receiver.  
Chl µg/l - CPHLZZXX mg/m3 The mass of all variants of chlorophyll-a per unit volume of the water column held in particles of any size. Includes measurements made by instruments unable to resolve chlorophyll-a types and the sum of HPLC chlorophyll-a types.  

 

The standard unit conversion factor of * 31.252 was applied to oxygen concentration during transfer to obtain the BODC units of µmol/l.

The pH channel has not been transferred in the data from the Loch Sunart mooring as the channel is null.

All channels from the Carron Estuary and Campbeltown monitoring buoy sites were transferred.

Data Quality and Screening

Post transfer analysis and crosschecks were applied according to BODC procedures. This involved the screening of data to check flags were appropriately applied whilst also applying further quality control flags where appropriate.

During the originator's data quality checks, suspect data were replaced with one of the following flags: 'No sensor', 'Quality Control failure', 'Quality Control Spike Removed', 'Quality Control Spike removed, wiper incorrectly parking over sensor', 'Quality control data removed due to heavy biofouling of instrument' and 'Power Failure'. These values were all flagged as 'Null' by BODC as no data were available when these flags were applied.

SEPA originator's processing document for Campbeltown short-term monitoring buoy

Data Acquisition and Analysis

Data were obtained from one YSI probe attached approximately 1 metre from the surface on a mooring deployed in Campletown Loch. The mooring was deployed and serviced by the Scottish Environment Protection Agency (SEPA) for the purpose of a short-term investigation assessing the water quality impacts on Campeltown Loch from an industrial discharge. The dataset collected is smaller than intended because the buoy became detached in a storm. All data were submitted in GMT format.

Quality and Screening

Once downloaded the data went through SEPA data quality checks with suspect data removed and relevant flags attached to inform future users of the reasons for any missing data.

Submission

The data were then submitted to BODC through ftp as .csv files.


Project Information


No Project Information held for the Series

Data Activity or Cruise Information

Cruise

Cruise Name Ladybird 20110303
Departure Date 2011-03-03
Arrival Date 2011-03-03
Principal Scientist(s)Matthew V Blackburn (Scottish Environment Protection Agency, Edinburgh)
Ship Unknown self-propelled boat

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameSEPA_Campbeltown
CategoryCoastal location
Latitude55° 25.39' N
Longitude5° 35.00' W
Water depth below MSL15.0 m

SEPA Campbeltown Fixed Station Mooring

Location name Campbeltown
Nominal Latitude (+ve N) 55.42312
Nominal Longitude (+ve E) -5.58329
Water depth (m) 15
Period of data collection 2010 to 2011

The buoy was located in Campbeltown Loch and provides measurements of dissolved oxygen, salinity, temperature, pH, chlorophyll and turbidity. Maintenance took place on a monthly basis using SEPA support vessels. Samples were collected every 15 minutes, with occasional periods where a sample was collected every 30 minutes.

The full water depth of the mooring position was 15 metres. The depth was obtained by the originator from the nautical chart on-board the Sir John Murray survey vessel.

Related Fixed Station activities are detailed in Appendix 1


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: SEPA_Campbeltown

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
1801440Hydrography time series at depth2010-06-28 10:30:0055.42312 N, 5.58329 WSir John Murray SJM 20100628
1801452Hydrography time series at depth2010-08-03 15:45:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20100803
1801464Hydrography time series at depth2010-09-07 10:00:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20100907
1801476Hydrography time series at depth2010-10-14 10:00:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20101014
1801488Hydrography time series at depth2010-11-13 12:01:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20101113
1801507Hydrography time series at depth2010-12-15 15:31:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20101215
1801519Hydrography time series at depth2011-01-24 13:01:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110124
1801520Hydrography time series at depth2011-01-27 12:01:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110127
1801544Hydrography time series at depth2011-04-06 12:01:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110406
1801556Hydrography time series at depth2011-05-18 13:00:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110518
1801568Hydrography time series at depth2011-06-21 12:00:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110621
1801581Hydrography time series at depth2011-07-26 11:00:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110726
1801593Hydrography time series at depth2011-08-31 12:00:0055.42312 N, 5.58329 WUnknown self-propelled boat Ladybird 20110831