AISIT Data

The AISIT database is a curated, harmonised compilation of Arctic oxygen-18 (δ¹⁸O) isotope and associated tracer measurements from marine, freshwater and cryospheric environments — spanning over six decades of Arctic observation from 1967 to 2025.

For the purposes of AISIT, Arctic data are defined as observations collected north of 60° N. Measurements are drawn from individual research cruises and established international repositories, unified into a single, consistent, machine-readable schema.

Dataset provenance, metadata and quality information are provided in the accompanying metadata files for each source.

AISIT Data Access

Click on the icons below to view either the dataset or its distribution on a map. Within the map click on the various points to view details of each dataset, and use the filter functions to filter the data by various attributes.

	Dataset	Citation
1	[Insert citation and DOI]	Citation details for the datasets can be found at the following DOI links

Data Paper: TBC

AISIT Data Challenge

We are also hosting a data challenge [add details once finalised]

Click on the icons below to learn more about the challenge, or to view the GitHub notebook or the project.