European Directory of Marine Environmental Data (EDMED)

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General
Data set name

36 North Project oceanographic data

Data holding centreBritish Oceanographic Data Centre
CountryUnited Kingdom  United Kingdom
Time period1 May - 15 June 2005
OngoingNo
Geographical area

A full-depth transatlantic hydrographic section at latitude 36 N

Observations 
Parameters

Transmittance and attenuance of the water column; Particulate inorganic carbon concentrations in the water column; Electrical conductivity of the water column; Particulate total and organic carbon concentrations in the water column; Chlorophyll pigment concentrations in water bodies; Dissolved organic carbon concentration in the water column; Dissolved oxygen parameters in the water column; Concentration of inorganic halogens in the atmosphere; Vertical velocity of the water column (currents); Bathymetry and Elevation; Salinity of the water column; Horizontal velocity of the water column (currents); Temperature of the water column

Instruments

Meteorological packages; discrete air samplers; current profilers; CTD; single-beam echosounders; discrete water samplers; continuous water samplers

Description 
Summary

The dataset includes full-depth hydrographic profiles and current data collected by acoustic Doppler current profilers (ADCPs). Water samples were collected and analysed for salinity, inorganic nutrients (nitrogen, phosphorus, silicon), organic nitrogen and phosphorus components, dissolved organic carbon and alkalinity. Measurements of chlorofluorocarbons (CFCs), sulphur hexafluoride (SF6) and helium/tritium tracers were also collected to identify ages of water masses. These core observations were supplemented by measurements made by tied PhD students: measurements of Dissolved Organic Nitrogen (DON) and Dissolved Organic Phosphorus (DOP); isotopic nitrogen signatures; atmospheric deposition of nitrogen and phosphorus; measurements of dissolved organic carbon and dissolved oxygen; and plankton respiration rates. These measurements were taken on the RRS Charles Darwin across the North Atlantic, departing from Bermuda on 1 May 2005 and arriving in Lisbon on 15 June 2005. Data were collected via a number of conductivity-temperature-depth (CTD) casts and continuous underway measurements. The study aimed to examine why ocean temperatures are rising within the tropics and mid-latitudes of the North Atlantic but decreasing at high latitudes. Investigators: National Oceanography Centre, Southampton (NOCS): Elaine McDonagh, Brian King, Harry Bryden, Richard Sanders, Paula Mcleod . University of Liverpool: Ric Williams, George Wolff, Rhiannon Mather, Susan Leadbetter. University of East Anglia: Carol Robinson, Andy Watson, Tim Jickells, Ute Schuster. Proudman Oceanography Laboratory: Clare Postlethwaite.

OriginatorsNational Oceanography Centre, Southampton
Plymouth Marine Laboratory
University of East Anglia, School of Environmental Sciences
University of Liverpool Department of Earth and Ocean Sciences
References

36 North Project (2008) Project web site: http://www.bodc.ac.uk/36n/, 36 North Project

Data web sitehttp://www.bodc.ac.uk/projects/uk/36n/
Availability 
OrganisationBritish Oceanographic Data Centre
AvailabilityLicence
ContactPolly Hadžiabdić (Head of the BODC Requests Team)
Address

British Oceanographic Data Centre
Joseph Proudman Building 6 Brownlow Street
Liverpool
Merseyside
L3 5DA
United Kingdom

Telephone+44 (0) 151 795 4884
Emailenquiries@bodc.ac.uk
Administration 
Collating centreBritish Oceanographic Data Centre
Local identifier1048108
Global identifier232
Last revised2010-09-23