Calanus (copepod) sampled by the Continuous Plankton Recorder (CPR) survey (https://www.cprsurvey.org/) in the North Atlantic from 2009-2018 were analysed for stable carbon (d13C) and nitrogen (d15N) isotopes. This observational dataset was used together with environmental variables (sea surface temperature, mixed layer depth, chlorophyll a, wind speed) to develop Bayesian spatial models and to produce yearly and seasonal isoscapes (spatial modelling of stable isotope ratio) for 1998-2020. This dataset contains the isoscapes data, the isoscapes plots and and the Suess correction factors for the d13C isoscape data.

Isoscapes values: Rows correspond to latitude coordinates from 40N to 72N, step 0.25 degrees; and columns to longitudes coordinates from -60W to 16E, step 0.25 degrees.Isocapes plots: Graphical representation of isocapes based on data presented above.Suess correction: d13C isoscape data are corrected for Suess effect taking 2015 as year of reference. To obtain uncorrected data, please apply these correction factors (see Clark et al. 2021 for more information).