The data set contains a variety of physical, chemical and biological parameters. Hydrographic profiles provided temperature, salinity, fluorescence, dissolved oxygen and transmissance measurements, which were supplemented by time series of surface ocean and meteorological properties. Time series of current velocities, temperature and sea level were also collected. Biogeochemical and biological analyses of water samples provided nutrient, phytoplankton and zooplankton data, while production data were derived from incubation experiments. The data were collected at seven stations in the Celtic Sea with varying physical and biological characteristics. Fieldwork was undertaken between 15th and 29th May 2000, with each station being occupied for 24 hours. Data were collected via shipboard deployment of CTD profilers and undulators with accompanying auxiliary sensors, and discrete water sampling. Further data were obtained from three moorings including acoustic Doppler current profilers (ADCPs), temperature recorders and bottom pressure recorders that were also deployed and recovered during the study period. Measurements were collected during RRS Discovery cruise D246 as part of the multidisciplinary study of the interactions between physical processes and biological production in contrasting pelagic shelf waters. An additional goal of the study was to map the tidal front situated in the St George's Channel. The study was co-ordinated by Plymouth Marine Laboratory and the research involved 28 scientists and technicians from 14 separate institutions situated in five different countries. Data are managed by the British Oceanographic Data Centre.

This dataset comprises 67 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, during June - July 1993 from stations on the Celtic Shelf in the North East Atlantic Ocean. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the University of Hamburg, Department of Chemistry as part of the Ocean Margin Exchange (OMEX) I project.

This dataset comprises 18 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, in July 1995 from stations in the north east Atlantic between 45 - 50 N, 5 - 15 W. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the University of Hamburg, Department of Chemistry as part of the Ocean Margin Exchange (OMEX) I project.

This dataset comprises 42 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, in October 1998 from stations in a 100 x 50 km box centred at 59 20 N, 1 E in the northern North Sea. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the Royal Netherlands Institute for Sea Research as part of the PROcesses of Vertical Exchange in Shelf Seas (PROVESS) project.

This dataset comprises 167 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, during August - October 1994 from stations from the Straits of Hormuz to the Murray Ridge in the Gulf of Oman and the Arabian Sea. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the Plymouth Marine Laboratory as part of the ARABESQUE project.

This dataset comprises 46 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, during August - September 1995 from stations in the Celtic Sea and Goban Spur. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the University of Southampton Department of Oceanography as part of the Ocean Margin Exchange (OMEX) I project.

This dataset comprises 34 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, in August 1998 from stations off the coast of the Iberian Peninsula. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the Plymouth Marine Laboratory as part of the Ocean Margin Exchange (OMEX) II project.

This dataset comprises 29 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, during April - May 1994 from stations in the North East Atlantic between 49 - 50 N 11 - 13 W and at 49 N 16.5 W. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the Institute of Oceanographic Sciences Deacon Laboratory as part of the Ocean Margin Exchange (OMEX) I project.

This dataset comprises 120 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, during November - December 1994 from stations in the Gulf of Oman and the Arabian Sea. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the Plymouth Marine Laboratory as part of the ARABESQUE project.

This dataset comprises 82 hydrographic data profiles, collected by a conductivity-temperature-depth (CTD) sensor package, in June 1997 from stations on the continental shelf and slope off NW Portugal and Spain. A complete list of all data parameters are described by the SeaDataNet Parameter Discovery Vocabulary (PDV) keywords assigned in this metadata record. The data were collected by the Proudman Oceanographic Laboratory as part of the Ocean Margin Exchange (OMEX) II project.