Biological and Hydrographic station data collected during the Atlantic Meridional Transect (AMT) programme (1995-)

Atlantic Ocean (transect between the UK and the Falkland Islands, South Africa or South America)

Chlorophyll pigment concentrations in the water column; Silicate concentration parameters in the water column; Concentration of nitrogen species in the atmosphere; Alkalinity, acidity and pH of the water column; Nitrite concentration parameters in the water column; Temperature of the water column; Air pressure; Carotenoid pigment concentrations in the water column; Plankton abundance per unit volume of the water column; Horizontal velocity of the water column (currents); Wind speed and direction; Radioactivity in the water column; Stable isotope enrichment in the water column; Salinity of the water column; Total metal concentrations in water bodies; Microzooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column; Microzooplankton generic abundance in water bodies; Particulate total and organic nitrogen concentrations in the water column; Inorganic phosphorus species concentrations in the atmosphere; Phosphate concentration parameters in the water column; Atmospheric humidity; Particulate inorganic carbon concentrations in the water column; Raw light meter output; Microzooplankton taxonomy-related biomass expressed as carbon per unit volume of the water column; Microzooplankton taxonomic abundance in water bodies; Bathymetry and Elevation; Zooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column; Zooplankton non taxonomy-related biomass expressed as nitrogen per unit volume of the water column; Zooplankton non taxonomy-related abundance per unit volume of the water column; Metadata parameters; Concentration of suspended particulate material in the water column; Raw suspended particulate material optical sensor output; Concentration of organic matter in the atmosphere; Bacteria non taxonomy-related biomass expressed as carbon per unit volume of the water column; Bacteria generic abundance in water bodies; Dissolved oxygen parameters in the water column; Sulphur species concentrations in the atmosphere; Total dissolved inorganic carbon (TCO2) concentration in the water column; Stable isotope enrichment in the atmosphere; Vertical velocity of the water column (currents); Raw fluorometer output; Oxygen production and respiration in the water column; Raw oxygen sensor output; Phytoplankton taxonomic abundance in water bodies; Phaeopigment concentrations in the water column; Nitrate concentration parameters in the water column; Air temperature; Zooplankton taxonomy-related abundance per unit volume of the water column; Fish non taxonomy-related abundance per unit volume of the water column; Dissolved concentration parameters for other gases in the water column; Inorganic silicon species concentrations in the atmosphere; Density of the water column; Concentration of silicon species in the water column; Metal concentrations in the atmosphere; Dissolved metal concentrations in the water column; Phytoplankton generic abundance in water bodies; Light absorption in the water column; Primary production in the water column; Bacteria taxonomic abundance in water bodies; Organic sulphur compound dynamics in the water column; Concentrations of carboxylic acids and carboxylates in the atmosphere; Plankton biomass expressed as carbon per unit volume of the water column; Concentration of alkanes in the water column; Organosulphur species concentration parameters in the water column; Dissolved organic carbon concentration in the water column; Precipitation chemistry; Bacterial production in the water column; Urea concentration parameters in the water column; Visible waveband radiance and irradiance measurements in the water column; Concentration of inorganic halogens in the atmosphere; Dissolved total and organic nitrogen concentrations in the water column; Dissolved total or organic phosphorus concentration in the water column; Transmittance and attenuance of the water column; Particulate total and organic carbon concentrations in the water column; Electrical conductivity of the water column; Ammonium concentration parameters in the water column; Phytoplankton taxonomic biomass in water bodies

Radiometers; transmissometers; CTD; anemometers; meteorological packages; discrete air samplers; precipitation samplers; single-beam echosounders; discrete water samplers; acoustic backscatter sensors; plankton nets; fluorometers; bathythermographs; thermosalinographs; current profilers

The dataset comprises hydrographic profiles (temperature, salinity, oxygen, fluorometer, transmissometer, irradiance) and along track measurements (bathymetry, surface meteorology, sea surface hydrography), with discrete measurements including water chemistry (organic and inorganic nutrients, particulate organic carbon and nitrogen, dissolved gases, trace metals), biology (phytoplankton, zooplankton, primary production, community respiration, chlorophyll, pigments) and atmospheric particulates (major ions, organics and trace metals). Data have been collected from meridional transects of the Atlantic Ocean (between the UK and the Falkland Islands, South Africa or South America) from 1995 to the present day. The Atlantic Meridional Transect (AMT) programme aims to study the factors determining the ecological and biogeochemical variability of planktonic ecosystems in the tropical and temperate Atlantic Ocean, and their links to atmospheric processes. The majority of the data are available to academia for re-use and re-purpose but data from recent cruises may be subject to a moratorium which allows first use for data originators. The AMT is coordinated by Andy Rees (AMT Principal Investigator) and Miss Dawn Ashby (AMT Project Officer) at the Plymouth Marine Laboratory (PML) in conjunction with the National Oceanography Centre. Since its inception the programme has involved researchers from several different countries and has acted as a platform for national and international collaboration. Data are managed by the British Oceanographic Data Centre.

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