A First Step Toward Quantifying the Climate’s Information Production over the Last 68,000 Years

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9897)


Paleoclimate records are extremely rich sources of information about the past history of the Earth system. We take an information-theoretic approach to analyzing data from the WAIS Divide ice core, the longest continuous and highest-resolution water isotope record yet recovered from Antarctica. We use weighted permutation entropy to calculate the Shannon entropy rate from these isotope measurements, which are proxies for a number of different climate variables, including the temperature at the time of deposition of the corresponding layer of the core. We find that the rate of information production in these measurements reveals issues with analysis instruments, even when those issues leave no visible traces in the raw data. These entropy calculations also allow us to identify a number of intervals in the data that may be of direct relevance to paleoclimate interpretation, and to form new conjectures about what is happening in those intervals—including periods of abrupt climate change.


Information Production Storm Track Moisture Source Geothermal Heat Permutation Entropy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  1. 1.Department of Computer ScienceUniversity of ColoradoBoulderUSA
  2. 2.University of Colorado, INSTAARBoulderUSA
  3. 3.Santa Fe InstituteSanta FeUSA
  4. 4.Department of PhysicsUniversity of CaliforniaDavisUSA

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