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Tipping points (TPs) in the Earth system have been studied with growinginterest and concern in recent years due to the potential risk of anthropogenicforcing causing abrupt, and possibly irreversible, climate transitions.Paleoclimate records are essential for identifying TPs in Earth's past and forproperly understanding the climate system's underlying nonlinearities andbifurcation mechanisms. Due to the variations in quality, resolution, anddating methods, it is crucial to select the records that give the bestrepresentation of past climates. Furthermore, as paleoclimate time series varyin their origin, time spans, and periodicities, an objective, automatedmethodology is crucial for identifying and comparing TPs. To reach this goal,we present here the PaleoJump database of carefully selected, high-resolutionrecords originating in ice cores, marine sediments, speleothems, terrestrialrecords, and lake sediments. These records describe climate variability oncentennial, millennial, or longer time scales and cover all the continents andocean basins. We provide an overview of their spatial distribution and discussthe gaps in coverage. Our statistical methodology includes an augmentedKolmogorov-Smirnov test and Recurrence Quantification Analysis; it is appliedhere to selected records to automatically detect abrupt transitions therein andto investigate the presence of potential tipping elements. These transitionsare shown in the PaleoJump database together with other essential information,including location, temporal scale and resolution, along with temporal plots.This database represents, therefore, a valuable resource for researchersinvestigating TPs in past climates.

PaleoJump: A database for abrupt transitions in past climates