This dataset comprises hydrographic sections, together with measurements collected by ocean gliders and moored instrumentation deployed during the UK Overturning In the Subpolar North Atlantic Programme (UK-OSNAP). UK-OSNAP is the UK contribution to the International OSNAP Programme. The dataset also includes modelling output informed by the observations. OSNAP observations are focused on two lines: i) OSNAP West, extending from south Labrador to southwest Greenland and ii) OSNAP East from southeast Greenland to Scotland. Data collection commenced June 2014 and is ongoing. UK_OSNAP consists of cruises JR302, PE399, DY053, DY054, two alternating glider deployments, current meter moorings (five at Cape Farewell and three in the Rockall trough) and ADCPs in the Rockall Trough Shelf Edge Current. The model data addresses the Subpolar Gyre circulation and fluxes using data assimilation and theoretical analysis. The datasets assembled as part of UK-OSNAP provide a continuous record of full-depth, trans-basin mass, heat, and freshwater fluxes in the North Atlantic Subpolar Gyre. These, coupled with the associated modelling exercises help improve the understanding of the circulation and fluxes of the North Atlantic Subpolar Gyre. UK-OSNAP, funded by the Natural Environment Research Council (NERC) is led by the National Oceanography Centre (NOC). UK-OSNAP is a partnership between NOC, Scottish Association for Marine Science (SAMS), University of Oxford and the University of Liverpool. It is part of international OSNAP that is led by USA and includes 10 further partner groups in Canada, France, Germany, the Netherlands and China. Investigators: National Oceanography Centre (NOC): Dr Penny Holliday, Dr Sheldon Bacon, Dr Chris Wilson, Neill Mackay. Scottish Association for Marine Science (SAMS): Dr Stuart Cunningham, Prof Mark Inall, Loic Houpert. University of Oxford: Prof David Marshall, Dr Helen Johnson. University of Liverpool: Prof Ric Williams, Dr Vassil Roussenov. The full dataset is still being assembled and currently consists of near real time glider measurements made (to date) on the project, the mooring dataset and cruise data. NERC have added a 2-year extension to UK-OSNAP, until October 2020. This covers a 2-year deployment of 3 moorings in the Iceland Basin as partof the international OSNAP programme. The moorings will be recovered in 2020.
This dataset consists of a variety of hydrographic, biogeochemical and meteorological data. Hydrographic profiles, towed and underway measurements and point sources provided information on free-fall turbulence data, current velocities and acoustic backscatter, water column structure including temperature and salinity, the underwater light field, fluorescence and dissolved oxygen. A comprehensive biogeochemical water sampling programme provided details on nutrients, primary productivity, dissolved organic matter and phytoplankton pigments. Biological samples such as zooplankton were obtained from the water column using nets, and from the sea-bed using grabs. Bathymetry and meteorological parameters were measured across the study area. A dye release experiment was also carried out. Data collection was undertaken in the Celtic Sea. The data were collected during the period 02 - 27 July 2008 during RRS James Cook cruise JC025. Measurements were taken using a variety of instrumentation, including conductivity-temperature-depth (CTD) profilers with attached auxiliary sensors, bathymetric echosounders, water bottle samplers, nets, acoustic Doppler current profilers (ADCPs), remote access water samplers, towed undulators, free-fall turbulence profilers, temperature loggers, fluorometers, grabs and ship flow-through and meteorological packages. The data have been collected as part of the United Kingdom (UK) Natural Environment Research Council (NERC) Oceans 2025 programme (Work Package 3.2) to provide information on vertical mixing processes at the thermocline. This will help improve modelling of these processes and is an expansion of work carried out during a previous National Oceanography Centre Liverpool (NOCL) project ‘Physical-Biological Control of New Production within the Seasonal Thermocline’. The cruise was undertaken jointly by NOCL, the Scottish Association for Marine Sciences (SAMS), the University of Aberdeen, the University of Strathclyde, Napier University and the Joint Nature Conservation Committee (JNCC). The Principal Scientist during the research cruise was Professor Jonathan Sharples of NOCL, who is also the Principal Investigator of Work Package 3.2. CTD data, towed undulator data, temperature logger data, nutrient data, ADCP data, dye tracking data, zooplankton data, primary productivity data and ship underway monitoring system data from this cruise are held at the British Oceanographic Data Centre. Other data have not yet been supplied.
The data set comprises time series of non-directional surface wave spectra from moored buoys and shipborne wave recorders at fixed locations. Individual spectra comprise some 60 or so estimates of wave energy at a range of spectral frequencies, computed from 20 to 30 minute recordings of the sea surface displacement/heave. The spectra are computed at intervals ranging from 1 to 3 hours. Data holdings comprise 500 recording months of data from some 14 sites across the continental shelf areas around the British Isles and the NE Atlantic between 1976 and 1995. Observation periods at specific sites vary from 4 months to 6 years. Data from the following sites are included in the data set: Holderness offshore (53 55.9N, 000 01.4E 01; Mar 1986 - 31 Mar 1987); Holderness nearshore (53 55.7N, 000 03.5W; 01 Mar 1986 - 30 Jun 1986); West Bexington (50 38.1N, 002 42.5W; 01 Nov 1983 - 31 Mar 1985; 01 May 1985 - 26 Feb 1986; 01 May 1986 - 30 Apr 1987); West Bexington (50 36.0N, 002 39.6W; 01 Sep 1987 - 01 Apr 1988); Eddystone (50 10.0N, 004 15.0W; 01 Jan 1976 - 31 Dec 1981); Kinnairds Head (57 55.8N, 001 54.1W; 01 Feb 1980 - 30 Dec 1981); Scilly Isles (49 51.8N, 006 41.0W; 01 Apr 1979 - 31 Jul 1979; 01 Feb 1980 - 31 Dec 1982; 01 Apr 1983 - 31 Dec 1983); South Uist deep water (57 17.8N, 007 53.6W; 01 Aug 1980 - 31 Dec 1982); South Uist offshore (57 18.2N, 007 38.3W; 28 Feb 1976 - 30 Nov 1982); South Uist inshore (57 19.8N, 007 27.2W; 01 Apr 1978 - 31 Jul 1982); Channel Lightvessel( 49 54.4N, 002 53.7W; 01 Mar 1986 - 30 Jun 1987; 01 Apr 1988 - 30 Nov 1988); Dowsing Lightvessel (53 34.0N, 000 50.2E; 01 Jul 1985 - 31 Dec 1985; 01 Feb 1986 - 30 Jun 1986; 01 Sep 1986 - 30 Apr 1987; 01 Jul 1987 - 31 Dec 1987); Ocean Weather Ship Lima (57 00.0N, 020 00.0W; 01 Jan 1984 - 30 Jun 1988; 01 Aug 1988 - 31 Dec 1988); Seven Stones Lightvessel (50 03.8N, 006 04.4W; 01 Jan 1985 - 28 Feb 1986; 01 May 1986 - 31 Mar 1987; 01 May 1987 - 31 May 1987; 01 Oct 1987 - 31 Oct 1987; 01 Dec 1987 - 31 Dec 1987). The data originate almost exclusively from UK laboratories and are managed by the British Oceanographic Data Centre. Data collection is ongoing at some sites (for example, Seven Stones Lighvessel) but these data are not managed by BODC. They are part of the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) wavenet network.
This dataset consists of ~18000 scanned images (available to download in .jpg, but high resolution .tiff images are also available) from historical UK tide gauge ledgers. In 1993 the British Oceanographic Data Centre (BODC) acquired the registers from the Mersey Docks and Harbour Company (MDHC). These registers were in the form of large, leather‐bound volumes dating back to 1853 for Hilbre Island and 1857 for Georges Pier. The earlier books for Georges Pier and Hilbre Island contain 1/4 hourly heights and the remaining volumes mainly list high and low waters. Some of the ledgers include metrological data alongside the tidal information. There was also one ledger from the port of Sheerness. There were 142 books included in this project. The majority of the sites were in the Mersey Estuary, with one in the Thames Estuary. The sites are listed below, with the time period covered (gaps not shown): Dutton Locks Lower Gauge, River Weaver (53.28778,-2.62111) 1897-1917 Dutton Locks Upper Gauge, River Weaver (53.35111,-2.90694) 1897-1906 Eastham Lock, Mersey (53.3167,-2.9499) 1892-1981 Fiddlers Ferry (53.36667,-2.65) 1891-1974 Frodsham Bridge, River Weaver (53.30167,-2.70833) 1891-1917 Garston Dock, Mersey (53.40528,-2.99444) 1892-1917 George’s Pier, Liverpool (53.28333,-2.85) 1857-1912 Hale Head, Mersey (53.38333,-2.6) 1891-1917 Hilbre Island (53.3833,-3.2276) 1853-1987 Liverpool, Gladstone Dock (53.44969,-3.018) 1971-1981 Liverpool, Princes Pier (53.4083,-2.9983) 1971-1981 Stanlaw, Mersey (53.39556,-3.00833) 1891-1917 Sheerness (51.44564,0.74344) 1832-1849 Tranmere (53.3756,-2.9978) 1974-1981 Warrington, Mersey (53.28722,-2.6225) 1891-1912 Waterloo (53.4125,-3.0031) 1986-1987 Widnes, Mersey (53.32361,-2.79306) 1892-1917 Woodside Landing, Birkenhead (53.35,-2.73333) 1847-1897 The ledger scanning was put out to tender. Most of the ledgers were quite old and fragile, the books had to be preserved in their original format and binding and care had to be taken to prevent further deterioration as they were irreplaceable. It was specified in the tender that a specialist organisation was required with a proven track record of handling antique books. They had to use an archival quality overhead flatbed book scanner/ planetary scanner to preserve the pages and spines of the books. Some of the ledgers were quite large and required a scanner that could accommodate them without damage. The aim of this project was to digitise and scan historic analogue chart and manuscript sea level records held in the archive of the British Oceanographic Data Centre and to make these records available to the wider community. These data are unrepeatable scientific measurements and we want to encourage their reuse. Extending back and infilling tide gauge records will help with, among other things, climate change research, storm surge predictions and coastal land movement studies. BODC received a grant from the JISC eContent Capital Programme 2011-13, Strand B: Mass Digitisation to carry out the scanning of the ledgers.
The GEBCO Grid is a global terrain model for oceans and land at 30 arc-second intervals which was developed and first released in 2009 by the General Bathymetric Chart of the Oceans (GEBCO) as GEBCO 08. The current release is GEBCO 2014, released in December 2014 and updated in March 2015. GEBCO is an international group of experts who work on the development of a range of bathymetric (accurate mapping of the sea floor) data sets and data products. The bathymetric portion of the grid is largely based on a database of ship-track soundings with interpolation between soundings guided by satellite-derived gravity data. Data sets developed by other methods are also included where they improve the grid. The land portion of the grid is largely based on the US Geological Survey's SRMT30 data set, developed with data from the US National Aeronautics and Space Administration (NASA) Shuttle Radar Topographic Mission (SRTM). For the area around Antarctica, the land data are taken from the Bedmap2 data set. The grid is accompanied by a Source Identifier (SID) Grid which identifies which cells in the GEBCO Grid are based on soundings or existing grids and which have been interpolated. The data sets are updated as new bathymetric compilations are made available. Both grids are freely available to download, in netCDF; data GeoTiff and Esri ASCII raster formats, from the web. Free software is available for viewing and accessing data from the grids in netCDF and ASCII data formats. The grids are also included as part of the GEBCO Digital Atlas DVD.
This data set consists of a bathymetric grid derived from multibeam bathymetry data from cruise JC071. The bathymetric grid was created by gridding the cleaned raw multibeam data from JC071 at 1/64 arc-minute intervals using a nearneighbour gridding algorithm from the Generic Mapping Tools (GMT) software system. The data set covers an approximate one degree square with the minimum and maximum longitude and latitude co-ordinates: 17.016667W-16.216667W; 48.78333N-49.28333N. This is located in the Northeast Atlantic Ocean area. The data were collected from 7th-8th May 2012 using an EM120 Multibeam Echo-sounder. The cruise was part of the Porcupine Abyssal Plain (PAP): sustained ocean observation project. The bathymetry data were collected on an opportunistic basis during the cruise. The cruise was operated by the National Oceanography Centre (NOC), equipment operated by National Marine Facilities Sea Systems. The bathymetric grid was created by BODC for contributing to the EMODnet High Resolution Seafloor Mapping (HRSM) Project.
Nitrogen Fixation was determined from samples collected during CTD profiles at the surface and chlorophyll maximum once per day from the North Atlantic at approximately 24.5 degrees North on cruise D346 between 5th January and 19th February 2010. The samples were incubated at sea-surface temperature for 24 hours, filtered onto ashed-GF/F's and dried in oven at 50 degrees for further 24 hours. The data are being used as part of a wider study in the role iron has in nitrogen fixation. David Honey collected these data as part of his PhD, supervised by Martha Gledhill and Eric Achterberg.
This dataset is comprised of CTD temperature, salinity and potential temperature collected using seal tags. Data were collected as part of the NERC-funded project 'Ocean processes over the southern Weddell Sea shelf using seal tags'. Data were not collected as part of a cruise as seals were used as data activity platforms. 20 Weddell seals were tagged at the eastern end of the shelf-break north of the Filchner-Ronne Ice Shelf between 11 February 2011 and 03 May 2011. The aims of the project were: 1. The resulting data from the seals’ dives will provide the most comprehensive picture to date of the ocean conditions over the southern Weddell Sea continental shelf. 2. By mapping the temperature of the water near the sea floor it will be possible to determine the locations where dense waters leave the shelf, and the processes involved: either a direct flow down the slope under gravity, or initially mixing at the shelf edge with waters from off the shelf before descending down the slope. 3. To determine where the source waters come onto the shelf. 4. Though the research was primarily oceanographic, the movements and diving behaviour provide insight to seal biologists studying the animals' beahviour. Data were collected as part of NERC standard grants NE/G014086/1 and NE/G014833/1. NE/G014086/1 was the lead grant and was led by Dr Keith William Nicholls of NERC British Antarctic Survey, Science Programmes and runs from 01 April 2010 to 31 December 2018. The secondary grant, NE/G014833/1, was led by Professor Michael Fedak of University of St Andrews, Sea Mammal Research Unit and runs from 01 October 2010 to 28 February 2014. The seal tag CTD data have been received by BODC and are currently available in original format upon request.
Historical sea level data for the Thames region. These data were originally screened as part of an Environment Agency project on extreme sea level in the Thames estuary. Coryton: 1966-1970, 1973-1974 North Woolwich: 1950, 1955-1963, 1965-1967, 1969-1970, 1973-1974 Southend: 1981-1983 Tilbury: 1931-1945, 1960-1961, 1967, 1970, 1984 Tower Pier: 1928-1942, 1944-1945, 1947-1951, 1954-1955, 1958, 1960-1966, 1973
The data set comprises time series of sea level data from coastal tide gauges. The data holdings include over 1000 site years of data from about 200 sites comprising about 10 million records. About 75 per cent of the data are from some 100 sites around the British Isles - the remaining data are from coastal sites and islands scattered across the globe. Data are primarily hourly values. Recording periods vary from one month at some sites to over several years.There are three short series from around the Irish coast which were collected in 1842.