Metadata Report for BODC Series Reference Number 932534


Metadata Summary

Data Description

Data Category Meteorology -unspecified
Instrument Type
NameCategories
Vaisala HMP temperature and humidity sensor  meteorological packages
LI-COR LI-190 PAR sensor  radiometers
Skye Instruments SKS1110 pyranometer  radiometers
Druck RPT 301 barometer  meteorological packages
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Mr John Howarth
Originating Organization Proudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Processing Status banked
Project(s) Coastal Observatory
Oceans 2025
Oceans 2025 Theme 10
Oceans 2025 Theme 10 SO11
 

Data Identifiers

Originator's Identifier PD33_08_PRODQXF_MET
BODC Series Reference 932534
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2008-10-22 07:27
End Time (yyyy-mm-dd hh:mm) 2008-10-23 03:54
Nominal Cycle Interval 60.0 seconds
 

Spatial Co-ordinates

Southernmost Latitude 53.44767 N ( 53° 26.9' N )
Northernmost Latitude 53.53867 N ( 53° 32.3' N )
Westernmost Longitude 3.92333 W ( 3° 55.4' W )
Easternmost Longitude 3.03917 W ( 3° 2.4' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor Depth -10.5 m
Maximum Sensor Depth -9.6 m
Minimum Sensor Height -
Maximum Sensor Height -
Sea Floor Depth -
Sensor Distribution Scattered at fixed depths - The sensors are scattered with respect to depth but each remains effectively at the same depth for the duration of the series
Sensor Depth Datum Approximate - Depth is only approximate
Sea Floor Depth Datum -
 

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)
ALATGP01 1 Degrees Lat_GPS Latitude north (WGS84) by unspecified GPS system
ALONGP01 1 Degrees Lon_GPS Longitude east (WGS84) by unspecified GPS system
CAPHZZ01 1 Millibars AirPress Pressure (measured variable) exerted by the atmosphere
CDTASS01 1 Degrees Celsius AirTemp Temperature of the atmosphere by dry bulb thermometer
CRELSS01 1 Percent Air_RelHumid Relative humidity of the atmosphere by humidity sensor
CSLRR101 1 Watts per square metre Solar_rad Downwelling vector irradiance as energy (solar (300-3000nm) wavelengths) in the atmosphere by pyranometer
 

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

Druck Resonant Pressure Transducer RPT 301

The Druck Resonant Pressure Transducer is a barometer with a multi-layer construction including a resonator and a pressure sensitive diaphragm micro-machined from one piece of silicon. The resonator is bonded to a second silicon wafer containing the drive and pick-up system under vacuum. This isolates the resonator from the pressure media, thereby ensuring that the accuracy is maintained regardless of the pressure media density. Pressure is measured from the frequency output of the sensor over a fixed number of cycles.

The RPT 301 is ideal for weather stations monitoring atmospheric trends, engine test cells or as a highly stable pressure reference transfer standard.

Specifications

Pressure range (psia) 0.5 to 50
Overpressure 1.25 x calibrated full scale
Pressure containment (psia) 75
Excitation voltage (Vdc) 4.5 to 32
Accuracy ± 0.02% of full scale (standard)
Stability (ppm year -1 ) < 159 (standard)

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

PD33_08 Meteorology instrument details

Instrument type Make and model Serial number Height on mast Manufacturer's details available?
Solar radiation Skye Instruments High Output Pyranometer Sensor KL2650 1097 15778 10.1 m Yes
Barometer Druck RPT 301 - - Yes
Air temperature sensor Campbell Scientific HMP45C - 9.6 m Yes
Relative humidity sensor Campbell Scientific HMP45C - 9.6 m Yes
Wind anemometer WindSonic by Gill - 10.5 m Yes

Skye SKS 1110 Pyranometer

The SKS 1110 is a cosine-corrected pyranometer that uses a silicon photocell detector to measure solar energy over the spectral range 400 - 1100 nm. The maximum cosine error to 80° is typically 5%. The instrument is only suitable for measurements in natural light conditions.

Specifications

Temperature range -30 to 75°C
Sensitivity

5 µA/100 W m -2
1 mV/100 W m -2

Working range 0 to 5000 W m -2
Linearity error < 0.2%
Absolute calibration error

< 3% (typical)
5% (maximum)

Cosine error 3%
Azimuth error < 1%
Temperature coefficient ± 0.2% °C -1
Long term stability ± 2%
Response time 10 ns
Humidity range 0 to 100% RH

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

Vaisala Temperature and Relative Humidity HMP Sensors

A family of sensors and instruments (sensors plus integral displays or loggers) for the measurement of air temperature and relative humidity. All are based on a probe containing a patent (HUMICAP) capacitive thin polymer film capacitanece humidity sensor and a Pt100 platinum resistance thermometer. The probes are available with a wide range of packaging, cabling and interface options all of which have designations of the form HMPnn or HMPnnn such as HMP45 and HMP230. Vaisala sensors are incorporated into weather stations and marketed by Campbell Scientific.

All versions operate at up to 100% humidity. Operating temperature ranges vary between models, allowing users to select the version best suited to their requirements.

Further details can be found in the manufacturer's specification sheets for the HMP 45 series , HMP 70 series and HMP 230 series .

LI-COR LI-190 Quantum PAR Sensor

The LI-COR LI-190 Quantum Sensor is a submersible radiometer designed to measure irradiance over the photosynthetically active radiation (PAR) spectral range. The instrument incorporates a silicon photodiode with an enhanced response at visible wavelengths. A visible bandpass interference filter is combined with a coloured glass filter, mounted in a cosine corrected head.

The model code sometimes includes a two letter suffix, indicating the type of cable connectors supplied.

Specifications

Wavelength 400 to 700 nm
Sensitivity Typically 5 to 10 µA per 1000 µmol s -1 m -2
Linearity Maximum deviation of 1% up to 10000 µmol s -1 m -2
Stability Typically < ± 2% change over a 1 year period
Response time 10 µs
Temperature dependence Maximum 0.15% °C -1
Cosine correction up to 80° angle of incidence
Azimuth < ± 1% error over 360° at 45° elevation
Operating temperature -40 to 65°C
Relative humidity 0 to 100%

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

Prince Madog Cruise PD33_08 Meteorology Series

Meteorology Processing Notes

Prince Madog Cruise PD33_08 Sea Surface Hydrography, Meteorology and Navigation Series

Data acquisition

Surface hydrographic (ship's intake 3 m below surface), meteorology measurements and navigation data, including ship heading and bathymetric depth were time stamped and logged to a central logging system. The data underwent conversion from raw counts into engineering units and were transferred to BODC, at 60 second resolution, for further processing.

The RV Prince Madog set sail at 07:00 22 October 2008 but the underway pump was not activated until 07:27 22 October 2008. There are, therefore, no hydrographic data for this period. The anemometer was not functioning correctly during the cruise, therefore no wind data were logged.

BODC underway data processing procedures

All underway sea surface hydrography, meteorology and ship's navigation data were merged into a common QXF file. The QXF file then underwent a further step. This involved using Matlab transfer 378 to split the underway QXF file into three separate QXF files. One contained data for sea surface hydrography, one for meteorological data and the final QXF file held the navigation data.

Each data channel was visually inspected on a graphics workstation and any spikes or periods of dubious data were flagged as suspect. The capabilities of the workstation screening software allows all possible comparative screening checks between channels (e.g. to ensure corrected wind data have not been influenced by changes in ship's heading). The system also has the facility of simultaneously displaying the data and the ship's position on a map to enable data screening to take oceanographic climatology into account.


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

Oceans 2025 - The NERC Marine Centres' Strategic Research Programme 2007-2012

Who funds the programme?

The Natural Environment Research Council (NERC) funds the Oceans 2025 programme, which was originally planned in the context of NERC's 2002-2007 strategy and later realigned to NERC's subsequent strategy (Next Generation Science for Planet Earth; NERC 2007).

Who is involved in the programme?

The Oceans 2025 programme was designed by and is to be implemented through seven leading UK marine centres. The marine centres work together in coordination and are also supported by cooperation and input from government bodies, universities and other partners. The seven marine centres are:

Oceans2025 provides funding to three national marine facilities, which provide services to the wider UK marine community, in addition to the Oceans 2025 community. These facilities are:

The NERC-run Strategic Ocean Funding Initiative (SOFI) provides additional support to the programme by funding additional research projects and studentships that closely complement the Oceans 2025 programme, primarily through universities.

What is the programme about?

Oceans 2025 sets out to address some key challenges that face the UK as a result of a changing marine environment. The research funded through the programme sets out to increase understanding of the size, nature and impacts of these changes, with the aim to:

In order to address these aims there are nine science themes supported by the Oceans 2025 programme:

In the original programme proposal there was a theme on health and human impacts (Theme 7). The elements of this Theme have subsequently been included in Themes 3 and 9.

When is the programme active?

The programme started in April 2007 with funding for 5 years.

Brief summary of the programme fieldwork/data

Programme fieldwork and data collection are to be achieved through:

The data is to be fed into models for validation and future projections. Greater detail can be found in the Theme documents.


Oceans 2025 Theme 10

Oceans 2025 is a strategic marine science programme, bringing marine researchers together to increase people's knowledge of the marine environment so that they are better able to protect it for future generations.

Theme 10: Integration of Sustained Observations in the Marine Environment spans all marine domains from the sea-shore to the global ocean, providing data and knowledge on a wide range of ecosystem properties and processes (from ocean circulation to biodiversity) that are critical to understanding Earth system behaviour and identifying change. They have been developed not merely to provide long-term data sets, but to capture extreme or episodic events, and play a key role in the initialisation and validation of models. Many of these SOs will be integrated into the newly developing UK Marine Monitoring Strategy - evolving from the Defra reports Safeguarding our Seas (2002) and Charting Progress (2005), thus contributing to the underpinning knowledge for national marine stewardship. They will also contribute to the UK GOOS Strategic Plan (IACMST, 2006) and the Global Marine Assessment.

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


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

Cruise

Cruise Name PD33/08
Departure Date 2008-10-22
Arrival Date 2008-10-23
Principal Scientist(s)Matthew R Palmer (Proudman Oceanographic Laboratory)
Ship RV Prince Madog

Complete Cruise Metadata Report is available here


Fixed Station Information


No Fixed Station Information held for the Series


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