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Metadata Report for BODC Series Reference Number 1174870


Metadata Summary

Data Description

Data Category PAR radiance and irradiance
Instrument Type
NameCategories
Satlantic OCR-507 multispectral radiometer  radiometers
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Prof Jonathan Sharples
Originating Organization Proudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) Seasonal Thermocline Production Control
 

Data Identifiers

Originator's Identifier CD173_SATLANTIC_CS2H_L3A
BODC Series Reference 1174870
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2005-07-23 17:08
End Time (yyyy-mm-dd hh:mm) 2005-07-23 17:12
Nominal Cycle Interval 1.0 metres
 

Spatial Co-ordinates

Latitude 48.53200 N ( 48° 31.9' N )
Longitude 9.46300 W ( 9° 27.8' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor or Sampling Depth 3.0 m
Maximum Sensor or Sampling Depth 70.0 m
Minimum Sensor or Sampling Height -
Maximum Sensor or Sampling Height -
Sea Floor Depth -
Sea Floor Depth Source -
Sensor or Sampling Distribution Variable common depth - All sensors are grouped effectively at the same depth, but this depth varies significantly during the series
Sensor or Sampling Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum -
 

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
ADEPZZ011MetresDepth (spatial coordinate) relative to water surface in the water body
PTCHEI011DegreesOrientation (pitch) of measurement platform by inclinometer
ROLLEI011DegreesOrientation (roll angle) of measurement platform by inclinometer
RXSD412E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (412nm wavelength) in the atmosphere by cosine-collector radiometer
RXSD443E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (443nm wavelength) in the atmosphere by cosine-collector radiometer
RXSD490E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (490nm wavelength) in the atmosphere by cosine-collector radiometer
RXSD510E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (510nm wavelength) in the atmosphere by cosine-collector radiometer
RXSD560E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (560nm wavelength) in the atmosphere by cosine-collector radiometer
RXSD665E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (665nm wavelength) in the atmosphere by cosine-collector radiometer
RXSD705E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (705nm wavelength) in the atmosphere by cosine-collector radiometer
RXUD412E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (412nm wavelength) in the water body by cosine-collector radiometer
RXUD443E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (443nm wavelength) in the water body by cosine-collector radiometer
RXUD490E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (490nm wavelength) in the water body by cosine-collector radiometer
RXUD510E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (510nm wavelength) in the water body by cosine-collector radiometer
RXUD560E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (560nm wavelength) in the water body by cosine-collector radiometer
RXUD665E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (665nm wavelength) in the water body by cosine-collector radiometer
RXUD705E1Watts per square metre per nanometreDownwelling vector irradiance as energy of electromagnetic radiation (705nm wavelength) in the water body by cosine-collector radiometer
RXUU412L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (412nm wavelength) in the water body by radiance sensor
RXUU443L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (443nm wavelength) in the water body by radiance sensor
RXUU490L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (490nm wavelength) in the water body by radiance sensor
RXUU510L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (510nm wavelength) in the water body by radiance sensor
RXUU560L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (560nm wavelength) in the water body by radiance sensor
RXUU665L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (665nm wavelength) in the water body by radiance sensor
RXUU705L1Watts per square metre per nanometre per steradianUpwelling radiance as energy of electromagnetic radiation (705nm wavelength) in the water body by radiance sensor

Definition of Rank

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

Problem Reports

No Problem Report Found in the Database


Data Access Policy

Open Data supplied by Natural Environment Research Council (NERC)

You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."


Narrative Documents

Satlantic OCR 500 series Multispectral Radiometer

The OCR-507 Multispectral Radiometer is a member of Satlantic's line of micro-sensor instruments. The OCR-507 is a complete stand-alone, fully digital optical sensor package capable of generating spectral records of light collected in an ocean environment. The instrument comprises data logging and processing software and is available in two configurations, radiance and irradiance for in-water and in-air applications. The instrument can also be configured as a coupled irradiance and radiance radiometer. Up to seven customer defined discrete optical wavelengths can be utilized with the OCR-507, including standard wavelengths of 400 to 865 nm, or UV wavelengths of 305, 325, 340 and 380 nm.

Two standard, non-isolated, telemetry (data) interfaces are provided with the instrument, each using a different transmission medium. The RS-232 interface provides transmit and receive capabilities whilst the RS-422 interface is for transmittance only. A non-isolated RS-485 interface is also provided for operating the instrument if used in a SatNet networked environment as part of a larger system.

The OCR-507 combines a fully characterized cosine response with custom low fluorescence filters and a sampling rate of 7 to 24 Hz. The instrument is also compatible with Bioshutter anti-biofouling solution.

Specifications for Downwelling Irradiance Configuration

  OCR-504 OCR-507
Field of view in-air or in-water cosine response (spectrally corrected) in-air or in-water cosine response (spectrally corrected)
Collector area 86 mm2 86 mm2
Detectors custom 17 mm2 silicon photodiodes custom 17 mm2 silicon photodiodes
Bandwidth range 400-865 nm (standard - custom also available) 400-865 nm (standard - custom also available)
Number of channels 4 7
Spectral bandwidth 10 nm 20 nm
Filter type Ion Assisted Deposition (IAD); custom low-fluorescence interference Ion Assisted Deposition (IAD); custom low-fluorescence interference
Cosine response 3% from 0 - 60°; 10% from 60 - 85° 3% from 0 - 60°; 10% from 60 - 85°
Out of band rejection 10-6 10-6
Typical NEI 2.5 X10-3 µWcm-2nm-1 2.5 X10-3 µWcm-2nm-1
Typical saturation 300 µWcm-2nm-1 300 µWcm-2nm-1
Depth rating 350 m 350 m
System time constant 0.011 seconds 0.011 seconds
Sample rate 7 Hz (24 Hz optional) 7 Hz (24 Hz optional)

Specifications for Upwelling Radiance Configuration

Field of view 10° in water (Half angle, half maximum); 14° in air (Half angle, half-maximum) 10° in water (Half angle, half maximum); 14° in air (Half angle, half-maximum)
Entrance aperture 9.5 mm diameter 9.5 mm diameter
Detectors Custom 13 mm2 Silicon photodiodes Custom 13 mm2 Silicon photodiodes
Bandwidth range 400-865 nm (standard - custom also available) 400-865 nm (standard - custom also available)
Number of channels 4 7
Spectral bandwidth 10 nm 20 nm
Filter type Ion Assisted Deposition (IAD); custom low-fluorescence interference Ion Assisted Deposition (IAD); custom low-fluorescence interference
Out of band rejection 10-6 10-6
Out of field rejection 5x10-4 >1.5 FOV 5x10-4 >1.5 FOV
Typical saturation 5 µWcm-2nm-1sr-1 5 µWcm-2nm-1sr-1
Depth rating 350 m 350 m
System time constant 0.011 seconds 0.011 seconds
Sample rate 7 Hz (24 Hz optional) 7 Hz (24 Hz optional)

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

CD173 Satlantic Optical data processing undertaken by BODC

Data were received by BODC as raw data files as well as ASCII and Matlab files for all 4 levels of ProSoft processing. These have all been archived and are available in the originators format on request. BODC have processed the level 3 ASCII files by reformatting to the internal format using established procedures. These data were chosen as they are the most processed data which do not include derived parameters. The data for each deployment were supplied in one file but grouped by parameter. The time channel assigned for each cycle to each group of parameters differed slightly (sub second differences). In order to be consistent it was decided that all data were be assigned the time channel from the Ed parameters. A check was built in to the reformatting software to ensure that the difference between the times used and the times supplied for the other parameter groups was always less than a second. The following table details mapping of variables to BODC parameter codes.

Originator's Variable Units BODC Parameter Code Description Units Comments
Depth Metres ADEPZZ01 Depth below surface of the water body Metres  
Ed 412.1 nm µW cm-2 nm-1 RXUD412E Downwelling vector irradiance as energy (412 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Ed 442.5 nm µW cm-2 nm-1 RXUD443E Downwelling vector irradiance as energy (443 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Ed 490.8 nm µW cm-2 nm-1 RXUD490E Downwelling vector irradiance as energy (490 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Ed 510.7 nm µW cm-2 nm-1 RXUD510E Downwelling vector irradiance as energy (510 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Ed 560.1 nm µW cm-2 nm-1 RXUD560E Downwelling vector irradiance as energy (560 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Ed 664.2 nm µW cm-2 nm-1 RXUD665E Downwelling vector irradiance as energy (665 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Ed 705.7 nm µW cm-2 nm-1 RXUD705E Downwelling vector irradiance as energy (705 nm wavelength) in the water body by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Lu 411.5 nm µW cm-2 nm-1 sr -1 RXUU412L Upwelling radiance as energy (412 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Lu 442.4 nm µW cm-2 nm-1 sr -1 RXUU443L Upwelling radiance as energy (443 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Lu 490.6 nm µW cm-2 nm-1 sr -1 RXUU490L Upwelling radiance as energy (490 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Lu 510.5 nm µW cm-2 nm-1 sr -1 RXUU510L Upwelling radiance as energy (510 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Lu 560.3 nm µW cm-2 nm-1 sr -1 RXUU560L Upwelling radiance as energy (560 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Lu 664.8 nm µW cm-2 nm-1 sr -1 RXUU665L Upwelling radiance as energy (665 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Lu 706.0 nm µW cm-2 nm-1 sr -1 RXUU705L Upwelling radiance as energy (705 nm wavelength) in the water body by radiance sensor W m-2 nm-1 sr-1 Conversion of /100 applied
Es 412.2 nm µW cm-2 nm-1 RXSD412E Downwelling vector irradiance as energy (412 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Es 442.4 nm µW cm-2 nm-1 RXSD443E Downwelling vector irradiance as energy (443 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Es 489.3 nm µW cm-2 nm-1 RXSD490E Downwelling vector irradiance as energy (490 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Es 510.7 nm µW cm-2 nm-1 RXSD510E Downwelling vector irradiance as energy (510 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Es 560.0 nm µW cm-2 nm-1 RXSD560E Downwelling vector irradiance as energy (560 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Es 664.8 nm µW cm-2 nm-1 RXSD665E Downwelling vector irradiance as energy (665 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
Es 704.5 nm µW cm-2 nm-1 RXSD705E Downwelling vector irradiance as energy (705 nm wavelength) in the atmosphere by cosine-collector radiometer W m-2 nm-1 Conversion of /100 applied
X Degrees PTCHEI01 Orientation (pitch) of measurement platform by inclinometer Degrees  
Y Degrees ROLLEI01 Orientation (roll angle) of measurement platform by inclinometer Degrees  

The originator noted that the temperature sensor wasn't working so temperature parameters have not been processed by BODC.

The reformatted data were visualised using BODC in-house software. Suspect data were marked by adding an appropriate quality control flag, and missing data marked by both setting the data to an appropriate absent data value and setting the quality control flag.

CD173 Satlantic Optics data originators processing

Sampling strategy

The free-fall Satlantic Microspectral Muiltprofiler was deployed 59 times during RRS Charles Darwin cruise CD173. The cruise took place between 15 July and 06 August 2005 in the Celtic Sea.

Setup of the instruments

The Satlantic optical profiler was made up of several sensors:

Sensor Serial number
MicroProfiler body 047
Deck Reference sensor (OCR-507) 100
Upwelling radiance sensor (OCR-507) 054
Downwelling irradiance sensor (OCR-507) 099
Deck Unit 058

Processing stages

Data were processed by the originator with Satlantic ProSoft software using standard procedures. ProSoft processing is segmented into 4 main levels (extract from the ProSoft user manual):

Processing stage Description
Level 1 Raw binary data file from an instrument. File nametag is raw. Level 1a - Binary data is extracted from raw data under the control of the instrument (calibration and/or telemetry definition) files. Extracted information is grouped along with its calibration information and is placed into Level 1a hdf files. File nametag is _L1a.
Level 1b Level1b data is calibrated. No data editing is applied. Shutter darks, if present, are not applied. File nametag is _L1b.
Level 2 Includes Level 1b data, which is further modified per request (i.e. depending on settings of processing parameters and on instrument context). File nametag is _L2. 1. Shutter dark correction is applied; reference and dark data deglitching is applied. 2.Profiler's data is tilt edited.
Level 2s Level 2 data is interpolated onto a common co-ordinates vector, which is either depth (Profiler) or time (Reference only or Sas). File nametag is _L2s.
Level 3a Includes averaging of Level 2s data as defined by the processing parameters. File nametag is _L3a.
Level 4 Includes higher level data products (users choice) calculated from level 3a data. This includes products such as normalized water leaving radiances, reflectance profiles, photosynthetically available radiation etc. File nametag is _L4.

Originators quality notes

The originator has reported that the temperature sensor wasn't working, hence the water properties have been excluded from the latest reprocessing protocol.

Originators series for cast OB9 did not contain upwelling radiance (Lu) parameters whilst the data from U2Aug3 did not include downwelling irradiance (Ed) parameters.

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:

  • Irregularities such as unfeasible values
  • Inconsistencies between related information, for example:
    • Times for instrument deployment and for start/end of data series
    • Length of record and the number of data cycles/cycle interval
    • Parameters expected and the parameters actually present in the data cycles
  • Originator's comments on meter/mooring performance and data quality

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:

  • Spurious data at the start or end of the record.
  • Obvious spikes occurring in periods free from meteorological disturbance.
  • A sequence of constant values in consecutive data cycles.

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:

  • Maximum and minimum values of parameters (spikes excluded).
  • The occurrence of meteorological events.

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.


Project Information

Physical-Biological Control of New Production within the Seasonal Thermocline

This project was a NERC responsive-mode project which was co-funded by the Defence Science and Technology Laboratory and ran from 2003 to 2006. The key institutes and scientists involved were:

Institute Scientific personnel
Proudman Oceanographic Laboratory (POL) Jonathan Sharples
National Oceanography Centre, Southampton (NOCS) Patrick Holligan
Mark Moore
University of Wales, Bangor (UWB) John Simpson
Tom Rippeth

Research Aim

The main aim of this research was to investigate the generation and dissipation of turbulence in the thermocline, and to quantify how the resulting mixing (supplying nutrients and controlling the light experienced by the algae) affected the growth of phytoplankton within the sub-surface chlorophyll maximum (SCM).

Research Objectives

The objective of the research was to test the general hypothesis that, in seasonally-stratified shelf waters, temporal and spatial variability of the rate of 'new' production is determined by the degree of coupling between physical and biological processes within the seasonal thermocline. In particular it has been suggested that physiological adaptation by phytoplankton making up the subsurface chlorophyll maximum drives a biological pump for extracting nitrate from the bottom mixed layer that is sensitive to internal mixing and to external climatological factors.

Research Approach

The sampling and experimental strategy was based on established methods for obtaining compatible, high-resolution vertical profiles (alternate CTD and FLY) and sections (SeaSoar) of physical, chemical, and biological parameters, allowing quantification of vertical fluxes and primary production on tidal and internal wave time scales. The cruise schedule (with associated mooring deployments) for the project is below.

Cruise Schedule

Cruise ID Ship Sampling Region Cruise Dates Main measurements
JR98 RRS James Clark Ross St Georges Channel, Celtic Sea and shelf edge 25/07/03 - 14/08/03 CTD casts, SeaSoar transects (CTD, chlorophyll, fluorescence), FRRF, ship ADCP, primary productivity, nutrients, trace metals, phytoplankton uptake rates, algal photophysiology, oxygen concentration, particle size, optics, mooring deployments
PD32_03 RV Prince Madog Celtic Sea and shelf edge 27/07/03 - 13/08/03 5 x FLY 25 hour tidal cycle stations, particle size analysis, particle settling velocity, CTD casts, mooring deployments
CD173 RRS Charles Darwin Celtic Sea and shelf edge 15/07/05 - 06/08/05 CTD casts, chlorophyll, oxygen concentration, FLY profiles, SeaSoar tows (CTD, chlorophyll, FRRF), phytoplankton pigments, nutrients, primary productivity, phytoplankton uptake rates, FRRF profiles, optics, particle size analysis, mooring deployments
PD27_05 RV Prince Madog Celtic Sea and shelf edge 22/07/05 - 06/08/05 FLY profiles, mooring deployments

Moorings

Station ID Latitude Longitude Depth (m) Mooring Deployment date Recovery date Deployment vessel
CS3 51.471 -6.428 95 Seabed frame 300 kHz ADCP 01/08/03 11/08/03 RV Prince Madog
CS3 51.471 -6.428 95 Seabed frame 1200 kHz ADCP 01/08/03 11/08/03 RV Prince Madog
CS3 51.474 -6.437 95 Mid-water subsurface 300 kHz ADCP 01/08/03 11/08/03 RV Prince Madog
CS3 51.469 -6.437 95 Thermistor chain from 5 - 45 m depth 01/08/03 11/08/03 RV Prince Madog
ACW 51.266 -5.741 85 Seabed frame 300 kHz ADCP 06/08/03 08/08/03 RV Prince Madog
CS2 48.532 -9.463 200 Surface temperature toroid 28/07/03 12/08/03 RRS James Clark Ross
CS2 48.532 -9.463 200 Thermistor chain throughout water column 28/07/03 12/08/03 RRS James Clark Ross
CS2 48.532 -9.463 200 Sub-suface 600 kHz ADCP (90 m) 28/07/03 12/08/03 RRS James Clark Ross
CS2 48.532 -9.463 200 Aanderaa RCM7 current meter/CTD (12 mab)* 28/07/03 12/08/03 RRS James Clark Ross
CS2 48.532 -9.463 200 Seabed frame 150 kHz ADCP 28/07/03 12/08/03 RRS James Clark Ross
CS2 48.532 -9.463 200 Seabed frame 300 kHz ADCP 28/07/03 12/08/03 RRS James Clark Ross
U2 49.236 -6.166 121 Sub-suface 300 kHz ADCP (5 mab)* 15/07/05 03/08/05 RRS Charles Darwin
U2 49.233 -6.167 120 Thermistor chain throughout water column 19/07/05 Mooring lost RRS Charles Darwin
CS2 48.571 -9.509 200 Thermistor chain throughout water column 17/07/05 24/07/05 RRS Charles Darwin
CS2 48.573 -9.51 194 Sub-suface 300 kHz ADCP (100 m) 17/07/05 24/07/05 RRS Charles Darwin
CS2 48.572 -9.508 196 Seabed frame 300 kHz ADCP 17/07/05 24/07/05 RRS Charles Darwin
CS2 48.571 -9.507 202 Seabed frame 150 kHz ADCP 17/07/05 24/07/05 RRS Charles Darwin
Bank 1 49.938 -7.792 118 Thermistor chain throughout water column 26/07/05 Mooring lost RRS Charles Darwin
Bank 1 49.936 -7.792 118 Seabed frame 300 kHz ADCP 27/07/05 Recovered by trawler 29/07/05 RRS Charles Darwin
Bank 2 49.895 -7.872 114 Thermistor chain throughout water column 20/07/05 04/08/05 RRS Charles Darwin
Bank 2 49.876 -7.897 112 Sub-surface 600 kHz ADCP (56 m) 26/07/05 04/08/05 RRS Charles Darwin
Bank 2 49.894 -7.873 110 Seabed frame 300 kHz ADCP 26/07/05 04/08/05 RRS Charles Darwin
Bank 3 49.851 -7.952 78 Thermistor chain throughout water column 26/07/05 03/08/05 RV Prince Madog
Bank 3 49.854 -7.948 78 Seabed frame 300 kHz ADCP 26/07/05 Mooring lost RV Prince Madog

* = metres above seabed

Project Outcomes

The main products of the research were:

  • The first large scale interdisciplinary study of the dynamic processes that determine the properties of the SCM in NW European shelf waters.
  • Substantive advances in quantifying internal mixing in NW European shelf seas, and in understanding how primary production is controlled by this small-scale turbulence.
  • New parameterisations for internal vertical mixing, and the response of primary production, for use in coupled numerical models.
  • Improved capability for estimating primary productivity in stratified waters by satellite remote sensing (ocean colour, sea surface temperature, wind mixing etc.)
  • An overall development of our understanding of the dynamics of ecosystems that support important fisheries, and of our abilities in predicting ecological and biogeochemical responses to variations and changes in the climate of the marine environment.

Data Activity or Cruise Information

Cruise

Cruise Name CD173
Departure Date 2005-07-15
Arrival Date 2005-08-06
Principal Scientist(s)Jonathan Sharples (Proudman Oceanographic Laboratory)
Ship RRS Charles Darwin

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameCS2
CategoryOffshore area
Latitude48° 33.23' N
Longitude9° 29.17' W
Water depth below MSL200.0 m

Physical-Biological Control of New Production within the Seasonal Thermocline: Fixed Station CS2

This station is positioned close to the edge of the north-west European shelf edge (see figure below). It was first visited by the RRS James Clark Ross (JR98) in 2003 and then by the RRS Charles Darwin (CD173) in 2005. This station was then re-visited in 2014 during the RRS Discovery cruise DY018, as part of work package I of the Shelf Seas Biogeochemistry project. The station has a mean water depth 201 m at the following co-ordinates:

Box Corner Latitude Longitude
North-west corner 48.5838° -9.5497°
South-east corner 48.4998° -9.4364°

The position of this station relative to the other sites visited during JR98, CD173 and DY018 can be seen from the figure below.

BODC image

The following table describes which sites were visited during which cruises

JB3 Bank 2 OB IS1b CS1 CS2 CS3 U2 Candyfloss/CCS Benthic A Benthic H Benthic I Benthic G East of Haig Fras Nymph Bank Celtic Deep East of Celtic Deep
JR98 - - - X X X X X - - - - - - - - -
CD173 X X X - - - - X - - - - - - - - -
DY018 - - - - - X - - X X X X X X X X X

The deployment and sampling history, to date, for this station is summarised below:

Sampling History

JR98 CD173 DY018
CTD casts 30 15 15
Free-fall light yo-yo profiles - 153 -
Profiling radiometer - 16 -
Zooplankton net hauls - - 32
Box cores - - 5
Marine snow catcher deployments - - 17
Stand Alone Pump Systems (SAPS) - - 2

Mooring deployments

Latitude Longitude Water depth (m) Moored instrument Deployment date Recovery date Deployment cruise Recovery cruise Comments
48.532° -9.463° 200 Surface temperature toroid 2003-07-28 2003-08-12 JR98 JR98 -
48.532° -9.463° 200 Thermistor chain throughout water column 2003-07-28 2003-08-12 JR98 JR98 -
48.532° -9.463° 200 Sub-surface 600 kHz ADCP 2003-07-28 2003-08-12 JR98 JR98 -
48.532° -9.463° 200 Aanderaa RCM7 current meter/CTD 2003-07-28 2003-08-12 JR98 JR98 -
48.532° -9.463° 200 Seabed frame 150 kHz ADCP 2003-07-28 2003-08-12 JR98 JR98 -
48.532° -9.463° 200 Seabed frame 300 kHz ADCP 2003-07-28 2003-08-12 JR98 JR98 -
48.571° -9.509° 200 Thermistor chain throughout water column 2005-07-17 2005-07-24 CD173 CD173 -
48.573° -9.51° 194 Sub-surface 300 kHz ADCP 2005-07-17 2005-07-24 CD173 CD173 -
48.572° -9.508° 196 Seabed frame 300 kHz ADCP 2005-07-17 2005-07-24 CD173 CD173 -
48.571° -9.507° 202 Seabed frame 150 kHz ADCP 2005-07-17 2005-07-24 CD173 CD173 -
- - 205 T-F chain 2014-11-17 09:03 UTC 2014-11-19 17:07 UTC DY018 DY018 -

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
Q value below limit of quantification

Appendix 1: CS2

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
1106504CTD or STD cast2003-07-27 21:58:0248.49983 N, 9.54967 WRRS James Clark Ross JR20030725 (JR98)
1106528CTD or STD cast2003-07-29 02:56:5948.538 N, 9.46383 WRRS James Clark Ross JR20030725 (JR98)
1106541CTD or STD cast2003-07-29 03:58:0248.538 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106553CTD or STD cast2003-07-29 05:20:5948.538 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106565CTD or STD cast2003-07-29 06:01:0048.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106577CTD or STD cast2003-07-29 06:58:0248.538 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106589CTD or STD cast2003-07-29 08:01:5848.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106590CTD or STD cast2003-07-29 09:17:0048.538 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106608CTD or STD cast2003-07-29 10:22:5748.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106621CTD or STD cast2003-07-29 11:15:0448.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106633CTD or STD cast2003-07-29 12:28:5748.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106645CTD or STD cast2003-07-29 13:37:0348.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106657CTD or STD cast2003-07-29 14:06:0048.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106669CTD or STD cast2003-07-29 15:00:0048.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106670CTD or STD cast2003-07-29 16:12:0048.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106682CTD or STD cast2003-07-29 17:00:5848.538 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106694CTD or STD cast2003-07-29 18:00:0048.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106701CTD or STD cast2003-07-29 18:58:0248.53783 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106713CTD or STD cast2003-07-29 19:59:5748.53783 N, 9.46417 WRRS James Clark Ross JR20030725 (JR98)
1106725CTD or STD cast2003-07-29 20:57:5948.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106737CTD or STD cast2003-07-29 21:57:0148.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106749CTD or STD cast2003-07-29 23:07:0048.538 N, 9.46383 WRRS James Clark Ross JR20030725 (JR98)
1106750CTD or STD cast2003-07-29 23:56:5948.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106762CTD or STD cast2003-07-30 00:58:0248.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106774CTD or STD cast2003-07-30 01:57:0448.53783 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106786CTD or STD cast2003-07-30 02:56:5948.53833 N, 9.46317 WRRS James Clark Ross JR20030725 (JR98)
1106798CTD or STD cast2003-07-30 03:59:0248.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1106805CTD or STD cast2003-07-30 05:09:0148.538 N, 9.464 WRRS James Clark Ross JR20030725 (JR98)
1108326CTD or STD cast2003-08-12 06:46:5748.52383 N, 9.45533 WRRS James Clark Ross JR20030725 (JR98)
1108338CTD or STD cast2003-08-12 11:25:0048.52883 N, 9.47533 WRRS James Clark Ross JR20030725 (JR98)
737376CTD or STD cast2005-07-17 18:57:0048.575 N, 9.51433 WRRS Charles Darwin CD173
737388CTD or STD cast2005-07-17 21:14:0048.57517 N, 9.515 WRRS Charles Darwin CD173
737407CTD or STD cast2005-07-17 23:07:0048.57617 N, 9.51083 WRRS Charles Darwin CD173
737419CTD or STD cast2005-07-18 00:58:0048.57533 N, 9.50133 WRRS Charles Darwin CD173
737420CTD or STD cast2005-07-18 07:19:0048.568 N, 9.50233 WRRS Charles Darwin CD173
1174790PAR radiance and irradiance2005-07-18 09:32:4748.532 N, 9.463 WRRS Charles Darwin CD173
1174808PAR radiance and irradiance2005-07-18 09:39:4548.532 N, 9.463 WRRS Charles Darwin CD173
737432CTD or STD cast2005-07-18 12:02:0048.56817 N, 9.5115 WRRS Charles Darwin CD173
1174821PAR radiance and irradiance2005-07-18 14:02:4548.532 N, 9.463 WRRS Charles Darwin CD173
1174833PAR radiance and irradiance2005-07-18 14:07:2248.532 N, 9.463 WRRS Charles Darwin CD173
737444CTD or STD cast2005-07-18 16:22:0048.5705 N, 9.49217 WRRS Charles Darwin CD173
737456CTD or STD cast2005-07-18 18:39:0048.56867 N, 9.48233 WRRS Charles Darwin CD173
737616CTD or STD cast2005-07-23 03:00:0048.57167 N, 9.48967 WRRS Charles Darwin CD173
737628CTD or STD cast2005-07-23 07:18:0048.57083 N, 9.48733 WRRS Charles Darwin CD173
1174845PAR radiance and irradiance2005-07-23 09:10:3748.532 N, 9.463 WRRS Charles Darwin CD173
1174857PAR radiance and irradiance2005-07-23 09:15:5148.532 N, 9.463 WRRS Charles Darwin CD173
1174869PAR radiance and irradiance2005-07-23 09:22:3748.532 N, 9.463 WRRS Charles Darwin CD173
737641CTD or STD cast2005-07-23 10:32:0048.5785 N, 9.50317 WRRS Charles Darwin CD173
737653CTD or STD cast2005-07-23 15:25:0048.57733 N, 9.48133 WRRS Charles Darwin CD173
1174882PAR radiance and irradiance2005-07-23 18:40:3548.532 N, 9.463 WRRS Charles Darwin CD173
737665CTD or STD cast2005-07-23 19:59:0048.57617 N, 9.48967 WRRS Charles Darwin CD173
737677CTD or STD cast2005-07-23 23:07:0048.58083 N, 9.50617 WRRS Charles Darwin CD173
737689CTD or STD cast2005-07-24 04:03:0048.5825 N, 9.512 WRRS Charles Darwin CD173
1371585CTD or STD cast2014-03-28 15:49:0048.57113 N, 9.5127 WRRS Discovery DY008
1336711Water sample data2014-03-28 15:55:0048.57113 N, 9.5127 WRRS Discovery DY008
1373057CTD or STD cast2014-08-07 06:04:0048.57 N, 9.51 WRRS Discovery DY026A
1373069CTD or STD cast2014-08-07 11:10:0048.57633 N, 9.51617 WRRS Discovery DY026A
1373070CTD or STD cast2014-08-07 15:00:0048.57167 N, 9.505 WRRS Discovery DY026A
1371849CTD or STD cast2014-11-14 13:15:0048.571 N, 9.50947 WRRS Discovery DY018 (GApr04 Leg1)
1371978CTD or STD cast2014-11-17 12:25:0048.57087 N, 9.50968 WRRS Discovery DY018 (GApr04 Leg1)
1371991CTD or STD cast2014-11-17 15:42:0048.57087 N, 9.50968 WRRS Discovery DY018 (GApr04 Leg1)
1372005CTD or STD cast2014-11-18 05:16:0048.57107 N, 9.51052 WRRS Discovery DY018 (GApr04 Leg1)
1372017CTD or STD cast2014-11-18 08:10:0048.57127 N, 9.51102 WRRS Discovery DY018 (GApr04 Leg1)
1372460CTD or STD cast2014-11-18 09:15:0048.57127 N, 9.51102 WRRS Discovery DY018 (GApr04 Leg1)
1372029CTD or STD cast2014-11-18 10:02:0048.57127 N, 9.51102 WRRS Discovery DY018 (GApr04 Leg1)
1372030CTD or STD cast2014-11-18 12:11:0048.57123 N, 9.51103 WRRS Discovery DY018 (GApr04 Leg1)
1372472CTD or STD cast2014-11-19 10:02:0048.57112 N, 9.5095 WRRS Discovery DY018 (GApr04 Leg1)
1372042CTD or STD cast2014-11-19 12:17:0048.57113 N, 9.50952 WRRS Discovery DY018 (GApr04 Leg1)
1372054CTD or STD cast2014-11-19 13:58:0048.57112 N, 9.50953 WRRS Discovery DY018 (GApr04 Leg1)
1372066CTD or STD cast2014-11-20 02:11:0048.57352 N, 9.50627 WRRS Discovery DY018 (GApr04 Leg1)
1372238CTD or STD cast2014-11-24 13:17:0048.571 N, 9.50945 WRRS Discovery DY018 (GApr04 Leg1)
1372251CTD or STD cast2014-11-24 14:09:0048.571 N, 9.50947 WRRS Discovery DY018 (GApr04 Leg1)
1624461CTD or STD cast2015-03-24 05:51:0048.57065 N, 9.5093 WRRS Discovery DY021
1626271CTD or STD cast2015-04-09 02:07:0048.57113 N, 9.51593 WRRS Discovery DY029 (GApr04 Leg2)
1626283CTD or STD cast2015-04-09 07:07:0048.57117 N, 9.50992 WRRS Discovery DY029 (GApr04 Leg2)
1626258CTD or STD cast2015-04-09 18:06:0048.5742 N, 9.50827 WRRS Discovery DY029 (GApr04 Leg2)
1626523CTD or STD cast2015-04-17 07:09:0048.57188 N, 9.51053 WRRS Discovery DY029 (GApr04 Leg2)
1626812CTD or STD cast2015-04-24 02:41:0048.57132 N, 9.50962 WRRS Discovery DY029 (GApr04 Leg2)
1627378CTD or STD cast2015-04-24 05:43:0048.52172 N, 9.45178 WRRS Discovery DY029 (GApr04 Leg2)
1626824CTD or STD cast2015-04-24 09:04:0048.60553 N, 9.44478 WRRS Discovery DY029 (GApr04 Leg2)
1626836CTD or STD cast2015-04-24 13:49:0048.56968 N, 9.50942 WRRS Discovery DY029 (GApr04 Leg2)
1626848CTD or STD cast2015-04-24 15:45:0048.5666 N, 9.50927 WRRS Discovery DY029 (GApr04 Leg2)
1627391CTD or STD cast2015-04-24 16:27:0048.56667 N, 9.50933 WRRS Discovery DY029 (GApr04 Leg2)
1626861CTD or STD cast2015-04-24 17:25:0048.56647 N, 9.50928 WRRS Discovery DY029 (GApr04 Leg2)
1624983CTD or STD cast2015-05-22 14:55:0048.57023 N, 9.5104 WRRS Discovery DY030
1624645CTD or STD cast2015-05-22 16:13:0048.57023 N, 9.5104 WRRS Discovery DY030
1625199CTD or STD cast2015-07-19 01:15:0048.57085 N, 9.5098 WRRS Discovery DY033 (GApr04 Leg3)
1625206CTD or STD cast2015-07-19 11:05:0048.57113 N, 9.50987 WRRS Discovery DY033 (GApr04 Leg3)
1625218CTD or STD cast2015-07-19 15:50:0048.57122 N, 9.50985 WRRS Discovery DY033 (GApr04 Leg3)
1625231CTD or STD cast2015-07-20 02:12:0048.57083 N, 9.50967 WRRS Discovery DY033 (GApr04 Leg3)
1625685CTD or STD cast2015-07-20 03:29:0048.57083 N, 9.50967 WRRS Discovery DY033 (GApr04 Leg3)
1625243CTD or STD cast2015-07-20 05:18:0048.57083 N, 9.50967 WRRS Discovery DY033 (GApr04 Leg3)
1625255CTD or STD cast2015-07-20 10:04:0048.5711 N, 9.5093 WRRS Discovery DY033 (GApr04 Leg3)
1625267CTD or STD cast2015-07-20 15:26:0048.57107 N, 9.50897 WRRS Discovery DY033 (GApr04 Leg3)