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Witold Bagniewski1, Denis-Didier Rousseau2,3,4, Michael Ghil5,6

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The PaleoJump database identifies past climate tipping points using high-quality paleoclimate records and advanced statistical methods. This resource aids researchers in understanding abrupt, irreversible climate shifts and potential tipping elements.

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Area of Science:

  • Paleoclimatology
  • Climate Science
  • Earth System Science

Background:

  • Anthropogenic forcing poses risks of abrupt, irreversible climate transitions (tipping points).
  • Paleoclimate records are crucial for identifying past tipping points and understanding climate nonlinearities.
  • Challenges exist in selecting reliable paleoclimate records and objectively identifying tipping points due to data variability.

Purpose of the Study:

  • To introduce the open-source PaleoJump database for identifying and analyzing past climate tipping points.
  • To provide a curated collection of high-resolution paleoclimate records from diverse sources.
  • To present an automated statistical methodology for detecting abrupt climate transitions.

Main Methods:

  • Compilation of carefully selected, high-resolution paleoclimate records (ice cores, marine sediments, etc.).
  • Application of augmented Kolmogorov-Smirnov test and Recurrence Quantification Analysis for abrupt transition detection.
  • Inclusion of spatial distribution, temporal scale, resolution, and plots within the database.

Main Results:

  • The PaleoJump database offers a comprehensive collection of paleoclimate data covering all continents and ocean basins.
  • Automated detection of abrupt transitions and investigation of potential tipping elements in selected records.
  • The database facilitates the visualization and study of past climate variability and tipping events.

Conclusions:

  • The PaleoJump database is a valuable, open-source resource for climate scientists.
  • It supports research into past tipping points and their underlying mechanisms.
  • Facilitates a deeper understanding of Earth's climate system dynamics and potential future changes.