Reconstructed in-situ sea water temperatures in the East Atlantic for 1353 to 2006 from samples collected at Loch Sween Scotland (56°01.99'N, 005°36.13'W).

Data set information

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Data holding centreBritish Oceanographic Data Centre
CountryUnited Kingdom  United Kingdom
Time periodPeriod of 1353 to 2006 reconstructed from core sample collected in 2007
Geographical area

Loch Sween Scotland (56°01.99'N, 005°36.13'W).


Temperature of the water column


Unconsolidated sediment corers


To understand seasonal climatic variability in the North East Atlantic, a fortnightly resolution marine climate record from 1353–2006 was constructed for shallow inshore waters on the west coast of Scotland using red coralline algae. The data are available in an Excel file as mean winter and summer temperatures with 95% confidence intervals for each year from 1353 to 2006. SCUBA was used to collect a 46 cm core from a coralline algal (Lithothamnion glaciale) deposit in Loch Sween, Scotland. The core was frozen and sectioned longitudinally and into 2 cm horizons. Coralline algae from each horizon were sectioned along the length of each thallus. Mg, Ca, and Sr were quantified along each thallus using electron microprobe analysis. For the live collected surface specimens, this process enabled absolute dates to be assigned to each year’s growth band present within the coralline algae. Five thalli down core were selected for radiocarbon rangefinder dating at the Scottish Universities Environmental Research Centre. Live thalli and the five rangefinder thalli were used as anchor points in construction of a combined chronology which was fine-tuned using dendrochnological techniques. Twenty seven (including anchors) Mg/Ca time series were available; each from an individual thallus. The work was funded by the Natural Environmental Research Council and the Royal Society of Edinburgh.

OriginatorsBritish Oceanographic Data Centre

Kamenos, N.A. (2010) North Alantic summers have warmerd more than winters since 1353, and the response of marine zooplankton., PNAS

Data web site
OrganisationBritish Oceanographic Data Centre
ContactNicholas Kamenos (Research Fellow)

University of Glasgow, Department of Geographical and Earth Sciences
Gregory Building
G12 8QQ
United Kingdom

Telephone+44 (0)141 330 5436
Facsimile+44 (0)141 330 4817
Collating centreBritish Oceanographic Data Centre
Local identifier1048Kamenos_core_2007
Global identifier6022
Last revised2017-01-30