The Historical Sea Temperature Time Series from the Atlantic Arctic data collection is a compilation of selected existing multidecadal to century-scale sea temperature time series, derived from historical measurements from various sources. These data were compiled within the The Arctic System Science Program (ARCSS) project "Collaborative Research: Synthesis of Modes of Ocean-Ice-Atmosphere Covariability in the Arctic System from Multivariate Century-Scale Observations", following upon data collection efforts supported by the Norwegian Research Council and the Nordic Council of Ministers.

The purpose of the data set is to provide a convenient compilation and consistent description of these data that are published though scattered. The original time series were produced by individual researchers and institutions in Denmark, Faroe Islands, Norway and Russia (see documentation and references in the readme file).

Spatial and temporal coverage varies. Spatially, the data range from west Greenland to the Barents Sea. The representativeness of these point or transect data is typically sub-regional (10s of km). Temporally, the time series range from several decades to about one century. There are some missing values, usually in the early part of the series. Provided here are typically monthly data. Data are available in an ASCII file.