Measurements of sub-micron marine particulates in the Irish Sea and seas to the west of Scotland (2011-2012)

This collection comprises physical measurements of the water column and surface waters, together with supporting discrete chemical and biological datasets. The data were obtained from the Irish Sea and in the sea off western Scotland over 4 periods: 17 and 23 August 2011 and 06 - 07 March 2012, all collected on Seiont IV cruises and 15 - 22 June 2012 obtained using the RV Prince Madog. These datasets and their collection methods are as follows: 1) LISST particle size data - A LISST 100X type C laser diffraction instrument was lowered in a frame from the ship and the depth-averaged volumes of particles in 32 size classes in a water column from the surface to a depth of 10 m (or the bottom, where shallower) were measured. 2) CTD profiles of conductivity, temperature, sigma-theta and salinity. At each station, a CTD with attached rosette was lowered, with data measurements taken. 3) SPM, mineral SPM, chlorophyll and CDOM water sample data. At each station a surface water sample was collected either in a bucket or in a rosette sampler on the CTD and triplicate sub-samples were filtered and subsequently dried and weighed, baked (at 500°C for 3 hours to remove organic material) and weighed again. 4) CDOM discrete samples taken from CTD and underway. Surface water samples collected at each station were filtered through 0.2 μm filters and the spectral variation of the absorption coefficient of the dissolved material in the filtrate was measured in a 10 cm cell in a Shimadzu 1600 dual-beam spectrophotometer, using distilled water as a reference. 5) Water column inherent optical property profiles. Measurements of beam attenuation were made using a Sea Tech T1000 transmissometer (20cm pathlength) fixed to the CTD on the RV Prince Madog. At some stations, vertical profiles of downwelling irradiance and upwelling radiance were made with a PRR radiometer. These cruises formed the fieldwork component of the NERC-funded project "Measurement of the abundance and optical significance of sub-micron sized particles in the ocean". The project aimed to use different magnifications and commercially available in-situ particle sizing instruments to create a package of instruments for measuring the undisturbed particle size distributions from 0.2 μm to 1 mm. This package will first be used in a turbulence tank to 'film' the flocculation process. The insight this gives will be used to construct new theoretical models of the particle size distribution. Because the camera also measures the shape of the particles, differences between observed and calculated optical properties can be compared, for the first time, to particle shape. Finally, the complete dataset will be collated to determine what size particles, under what conditions, are primarily responsible for the signals seen in visible band satellite images of the oceans. The NERC-funded project was held under lead grant reference NE/H022090/1 with child grants NE/H020853/1 and NE/H021493/1. The lead grant was held at Bangor University, School of Ocean Sciences by Professor David Bowers and ran from 01 April 2011 to 31 March 2014. Grant NE/H020853/1 was held at the University of Plymouth, School of Marine Science and Engineering by Dr. William Alexander Nimmo Smith and ran from 01 October 2010 to 30 September 2013. Finally, grant NE/H021493/1 was held at the University of Strathclyde Physics Department by Dr. David McKee and ran from 01 April 2011 to 31 March 2014. All data have been received by BODC as raw files from the RV Prince Madog and Seiont IV, processed and quality controlled using in-house BODC procedures.

Simple

Alternate title

British Oceanographic Data Centre record 1048NE-H022090-1dataset
Date (Publication)
2018-08-24
Date (Creation)
2023-12-06
Date (Revision)
2023-12-08
Citation identifier
http://www.bodc.ac.uk/ / EDMED6766
Point of contact
Organisation name Individual name Electronic mail address Role

British Oceanographic Data Centre

Unknown

enquiries@bodc.ac.uk

Owner

British Oceanographic Data Centre

Unknown

enquiries@bodc.ac.uk

Originator

British Oceanographic Data Centre

enquiries@bodc.ac.uk

Custodian

British Oceanographic Data Centre

enquiries@bodc.ac.uk

Distributor
Maintenance and update frequency
As needed

SeaDataNet Parameter Discovery Vocabulary

SeaVoX Vertical Co-ordinate Coverages

GEMET - INSPIRE themes, version 1.0

MEDIN metadata record availability
Access constraints
Other restrictions
Other constraints
No limitations apply
Other constraints

Data are freely available to all following agreement to the terms and conditions of a Data Licence
Use constraints
Other restrictions
Other constraints

Usage restrictions are specified in the terms of the licence
Spatial representation type
Text, table
Language
English
Topic category
  • Oceans
  • Biota
N
S
E
W
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Geographic identifier
Inner Seas off the West Coast of Scotland

SeaVoX water bodies 2024-12-11 revision

Geographic identifier
Irish Sea

SeaVoX water bodies 2024-12-11 revision

Begin date
2011-08-17
End date
2012-06-22
Unique resource identifier
urn:ogc:def:crs:EPSG::4326
Codespace

OGP
Distribution format
Name Version
Network Common Data Form
Ocean Data View
OnLine resource
Protocol Linkage Name
https://www.bodc.ac.uk/data/bodc_database/nodb/data_collection/6766/

BODC online data delivery service
Hierarchy level
Dataset

Conformance result

Title

COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Explanation

BODC protocols are based on the Open Archival Information System (OAIS) model enabling BODC to iterate towards compliance with the on-going evolution and development of community requirements including FAIR (Findable,Accessible,Interoperable,Reusable), TRUST (Transparency, Responsibility, User community, Sustainability, Technology) and CARE (Collective Benefit, Authority to Control, Responsibility, Ethics). Data managers quality assure submissions and assemble the metadata necessary for curation. Submissions (as received) are placed in a long-term accession and stored in triplicate across multiple sites. Appropriate data are transferred into a standard internal format with source variable names mapped to controlled vocabularies, documentation assembled, and metadata loaded into BODC databases. Access to these data is through direct request, the BODC website and through partner repositories such as SeaDataNet. Access control is attained by assigning a data policy to each set of data and this policy is used to administer access when data are requested. Discovery metadata is aligned with EU INSPIRE (through MEDIN) and SeaDataNet community standards. Data are converted to open community formats including Ocean Data View ASCII and SeaDataNet NetCDF, with data described using terms from the NERC vocabulary server. BODC submission agreements are documented on the BODC website and customer service is assured with a dedicated requests team that serve data following local regulations including General Data Protection Regulation (GDPR) 2018 and Environmental Information Regulations (EIR) 2004.

Pass
Yes
Statement

This dataset was created by scientists for the "Measurement of the abundance and optical significance of sub-micron sized particles in the ocean" project, which ran from 2009 to 2014, following their in-house data processing and quality control procedures. The data were then provided to the British Oceanographic Data Centre (BODC) for ingestion into one of the schemas of the National Oceanographic Database (NODB). During ingestion BODC undertake quality control, documentation and metadata enhancement procedures appropriate to the type of data. For an overview please see http://www.bodc.ac.uk/about/information_technology/data_processing_steps/. BODC supply full information about data collection, data processing and data quality with all data requests to enable users to assess data suitability themselves.Instrument (s) used to collect data: radiometers; spectrophotometers; CTD; transmissometers; in-situ particle sizers.

Metadata

File identifier
e11cf69405c75b4798ed7ddb92d64a15 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2025-06-09T13:45:20
Metadata standard name
MEDIN
Metadata standard version

3.1.2
Metadata author
Organisation name Individual name Electronic mail address Role

British Oceanographic Data Centre

Polly Hadžiabdić

enquiries@bodc.ac.uk

Point of contact
 
 

Overviews

Spatial extent

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Keywords



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