The temporary Catlin Arctic Survey Ice Base for the late winter early spring 2011 was located at 78 degrees 43.11 minutes N, 104 degrees 47.44 minutes W in Deer Bay, off Ellef Ringnes Island in the high Canadian Arctic.

Alkalinity, acidity and pH of the water column; Chlorophyll pigment concentrations in water bodies; Snow and ice chemistry; Phosphate concentration parameters in the water column; Total dissolved inorganic carbon (TCO2) concentration in the water column; Zooplankton taxonomy-related abundance per unit volume of the water column; Zooplankton and zoobenthos physiological condition parameters; Salinity of the water column; Temperature of the water column; Nitrate concentration parameters in the water column; Ammonium and ammonia concentration parameters in water bodies; Silicate concentration parameters in the water column; Nitrite concentration parameters in the water column

Fluorometers; plankton nets; pH sensors; titrators; nutrient analysers; CTD; discrete water samplers; snow and ice samplers

The Catlin Arctic Survey created a unique collaboration between scientists and explorers to undertake field research in the Arctic. Each Catlin Survey comprised of two principle parts. The 'Catlin Ice Base', which was a stationary scientific research base located off the northern coast of Canada; and the 'Explorer Team', comprising of a small long-range specialist team moving on foot from close to the North Geographic Pole towards Greenland. The Catlin Ice Base consisted of temporary polar shelters and tents erected on the sea ice off the coast of Ellef Ringnes Island, Nunavut, Canada, 78°46'27" N / 104°42'49" W. In 2010 and 2011 during the second and third Catlin Arctic Surveys, scientists and explorers examined the upper layers of the Arctic Ocean's water column. In parallel, scientists from the US, UK and Canada conducted experiments at a unique research station on the frozen Arctic Ocean with the support of experienced polar explorers and guides. These datasets (as .xls and .csv files) resulted from the work carried out at the Ice Base. Here a group, of up to 10 scientists and operational staff, were able to collect and analyze samples from under the sea ice as well as deploy heavier instrumentation up to a depth of 200 metres. Scientists at the ice base made measurements of temperature, salinity, total alkalinity, DIC, nutrients, chlorophyll, zooplankton community structure and physiological responses to elevated pCO2 levels. The Catlin Arctic Survey has enabled the monitoring, measuring and collection of information to improve scientific understanding of the processes involved in, and the impacts of, climate change. The scientists researched how changes within the seawater beneath the floating sea ice may be affecting powerful ocean currents that influence prevailing climate and weather patterns worldwide. These data were collected as part of the Catlin Arctic Survey funded by Catlin Ltd. and coordinated by Geo Mission Ltd. Participants were supported by a Natural Environment Research Council (NERC) UK Fellowship, PML Lord Kingsland Fellowship, Ralph Brown Expedition Grant from the Royal Geographical Society, NERC's National Centre for Earth Observation, World Wildlife Fund for Nature and Fisheries and Oceans Canada.

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